HomeMy WebLinkAbout19817 74th Ave Ne_BLD5983_2025 i
Permit Packet Coversheet
Community and Economic Development
City of Arlington • 18204 591h Avenue NE • Arlington,WA 98223 • Phone (360)403-3551
Permit Number: BLD5983 Permit Type: Commercial Building
Address/Parcel: 19817 74th Ave Ne Completed (Month/Year): EXPIRED December 2024
Land Use
❑ Notice of Decision ❑ Bonding or Assignment of Funds
❑ Staff Report o Confidential Documents. Contact the
❑ Application City to obtain.
❑ Narrative ❑ Letters and Project Documents
❑ Legal Description ❑ Other:
❑ Vicinity Map
❑ Site Plan Civil
❑ Landscape Plan ❑ Issued Permit
❑ Complete Streets Checklist ❑ Application
❑ Traffic Impact Analysis ❑ Other Applications
❑ Snohomish County Traffic Mitigation Offer ❑ Construction Calculation Worksheet
❑ WSDOT Traffic Offer Form ❑ Approved Plans
❑ Tree Survey ❑ Review Comment Form
❑ Stormwater Drainage Report ❑ Letters and Project Documents
❑ Geotech Report ❑ Other Agency Permits
❑ Critical Area Evaluation Form ❑ Reports:
❑ SEPA Checklist o Drainage Report Pg:
❑ Public Notice Material o Stormwater Pg:
❑ Noticing and Related Documents o Geotech Pg:
❑ Water/Sewer Availability Certificate o All Other Reports
❑ Unanticipated Discovery Plan Form ❑ SEPA and Noticing Materials
❑ Aerial Photo of Site ❑ Inspections
❑ Proposed Building Materials ❑ As-Builts
❑ Lighting Plans and Lighting Cut Sheets ❑ Other:
❑ Color Elevations
❑ Design Matrix Building
❑ Plat Map ❑✓ Issued Permit
❑ Title Report ❑✓ Application
❑ Lot Closures ❑ Additional Applications
❑ Preliminary Civil Plans ❑✓ Approved Plans
❑ Archaeological Survey ❑ Site Plan
o Confidential Documents. Contact the ❑ Letters and Project Documents
City to obtain. ❑ Calculations
❑ Topography(Existing Conditions) ❑✓ Project Specification Manuals
❑ CC&R's ❑ Reports
❑ Deeds/Easements/Conveyances ❑ Certificate of Occupancy
/Dedications ❑✓ Inspections
❑ Developer's Agreement ❑ Other:
❑ Recorded Copies
Page 1 of 1
CITY OF ARLINGTON
18204 59th Avenue NE,Arlington,WA 98223
INSPECTIONS:360-403-3417-Permit Center:360-403-3551
BUILDING PERMIT
19817 74TH AVE NE Permit#:5983
Parcel#:31051400200700 PERMIT EXPIRES 180 DAYS AFTER
DATE OF ISSUANCE.
Scope of Work:Installing one walk in cooler Valuation:15000.00
�T CONTRACTOR
GAYTEWAY BUSINESS PARK,LLC Great Sun Corp Great Sun Corp
P.O.BOX 1727 5930 1st Ave S 5930 1st Ave S
BELLEVUE,WA 98009 Seattle Seattle,WA 98108
2063298027 2063298024
LIC:601984 317 EXP:05/31/2025
HO GREATSC951D1 EXP:04/05/2025
MECHANICAL CONTRACTOR PLUMBING CONTRACTOR —
LIC#: EXP: LIC#: EXP:
W JOB DESCRIPTION ` —
PERMIT TYPE: COMMERCIAL BUILDING CODE YEAR: 2021
STORIES: 1 CONST.TYPE: IA
DWELLING UNITS: OCC GROUP: M;Mercantile
BUILDINGS: OCC LOAD:
PERMIT APPROVAL
The issuance or granting of this permit shall not be construed to be a permit for,or approval of,any violation of this Code or any
other ordinance or order of the City,of any state or federal law,or of any order,proclamation,guidance advice or decision of the
Governor of this State.To the extent the issuance or granting of this permit is interpreted to allow construction activity during any
period of time when such construction is prohibited or restricted by any state or federal law,or order,proclamation,guidance advice
or decision of the Governor of this State,this permit shall not authorize such work and shall not be valid.The building official is
authorized to prevent occupancy or use of a structure where in violation of this Code,any other City ordinances of this jurisdiction or
any other ordinance or executive order of the City,or of any state or federal law,or of any order,proclamation,guidance advice or
decision of the Governor.The building official is authorized to suspend or revoke this permit if it is determined to be issued in error or
on the basis of incorrect,inaccurate or incomplete information,or in violation of any City ordinance,regulation or order,state or
federal law,or any order,proclamation,guidance or decision of the Governor.
I AGREE TO COMPLY WITH CITY AND STATE LAWS REGULATING CONSTRUCTION AND IN DOING THE WORK
AUTHORIZED THEREBY;NO PERSON WILL BE EMPLOYED IN VIOLATION OF THE LABOR CODE OF THE
STATE OF WASHINGTON RELATING TO WORKMEN'S COMPENSATION INSURANCE AND RCW 18.27.
THIS APPLICATION IS NOT A PERMIT UNTIL SIGNED BY THE BUILDING OFFICIAL OR HIS/HER DEPUTY AND
ALL FEES ARE PAID.
IT IS UNLAWFUL TO USE OR OCCUPY A BUILDING OR STRUCTURE UNTIL A FINAL INSPECTION HAS BEEN
MADE AND APPROVAL OR A CERTIFICATE OF OCCUPANCY HAS BEEN GRANTED.IBC I10/IRC110.
SALES TAX NOTICE: Sales tax relating to construction and construction materials in the City of Arlington must be reported on
your sales tax return form and coded City of Arlington#3101. '/
(if/G,C� 7�� 05/28/2024 02AW-
05/24/2024
Applicant Signature Date Building Official Date
' CONDITIONS
Sprinklers required inside unit.Approved job copy shall be onsite for inspections.Adhere to approved plans.Call for inspections.
The property owner shall ensure that the construction project complies with all applicable zoning codes and regulations.The property
owner shall also ensure that the construction project does not cause any adverse impact on the surrounding environment or
community.The property owner shall be responsible for obtaining all necessary permits and approvals from the relevant authorities
before commencing construction.The property owner shall ensure that the construction project complies with all applicable design
review requirements.
THIS PERMIT AUTHORIZES ONLY THE WORK NOTED.THIS PERMIT COVERS WORK TO BE DONE ON PRIVATE
PROPERTY ONLY.ANY CONSTRUCTION ON THE PUBLIC DOMAIN(CURBS,SIDEWALKS,DRIVEWAYS,
MARQUEES,ETC.)WILL REQUIRE SEPARATE PERMISSION.
T PERMIT FEES
Date Description Fee Amount
05/28/2024 Web Only-Mechanical Commercial Plan Review $244.36
05/28/2024 Credit Card Service $7.33
05/28/2024 Processing/Technology $25.00
05/28/2024 Building Permit $375.94
05/28/2024 State Surcharge-Commercial $25.00
Total Due: $677.63
Total Payment: $677.63
Balance Due: $0.00
CALL FOR INSPECTIONS
Call by 3:30 pm for next day inspection,allow 48 hours for Fire Inspections
When calling for an inspection please leave the following information:
Permit Number,Type of Inspection being requested,and whether you prefer morning or afternoon
INSPECTION INFORMATION I Pass/Fail
COMMERCIAL BUILDING PERMIT APPLICATION
` Community and Economic Development
City of Arlington• 18204 59th Ave NE•Arlington,WA 98223 • Phone (360)403-3551
The following information is required for Commercial, Multi-Family,and Mixed-Use Building Permit Applications.
Mark each box to designate that the information has been provided. Please submit this checklist as part of the
submittal documents.See ASSISTANCE BULLETIN#30 for detailed design requirements.
EACH BUILDING OR STRUCTURE REQUIRES A SEPARATE SUBMITTAL.
SUBMIT ELECTRONIC FILES FOR EACH OF THE FOLLOWING; Incomplete applications will not be accepted.
REQUIRED DOCUMENTS
Site Plan
Architectural Plans
Structural Plans
Structural Calculations
Mechanical System Modifications, (if applicable)
Plumbing System Modifications,(if applicable)
Project Specification Manuals, (if applicable)
WSEC Compliance Forms, (if applicable) htt12s:4Jwaenergycodes.com�
Special Inspection and Testing Agreement
Deferred Submittal Request
Airport Property Lease (if building is located within the Arlington Airport Property Boundary)
1. Plan Review fee is due at time of submittal and remaining balance will be due at time of issuance.
2. The City of Arlington does not review or inspect electrical systems.Contact Labor and Industries at lni.wa.gov or
360-416-3000.
A. DEFERRED SUBMITTALS
If the project requires any of the following,a Deferred Submittal Request MUST be completed.Deferred submittals require
separate applications,plans and plan review.
1. Mechanical Plans (if not included in the plan set)
2. Plumbing Plans (if not included in the plan set)
3. Fire Sprinkler
4. Fire Alarm
5. Signage
B. SPECIAL INSPECTION AND TESTING AGREEMENT
A Special Inspection Firm is required to perform special inspections for the following type of work.
*The Special Inspection and Testing Agreement MUST be submitted with the Building Application.
❑ Reinforced Concrete ❑ Structural Steel and Welding
❑ Bolting in Concrete ❑ High-Strength Bolting
❑ Pre-stressed Concrete ❑ Spray-Applied Fireproofing
❑ Shotcrete ❑ Smoke-Control Systems
❑ Structural Masonry ❑ Other-Specify:
■❑ I acknowledge that all items designated as submittal requirements must accompany my Commercial
Building Permit Application to be considered a complete submittal.
COMMERCIAL BUILDING
INSTALLATION,MODIFICATION OR REMOVAL MAY REQUIRE A SEPARATE PERMIT SUBMITAL
*CHECKALL THAT APPLY
❑ Automatic fire extinguishing systems ❑ Compressed gas systems
❑ Fire pumps ❑ Flammable and combustible liquids (tanks,piping etc.)
❑ Standpipe systems ❑ Hazardous materials
❑ Private fire hydrants ❑ Industrial ovens/furnace
❑ Fire alarm and detection systems ❑ Spraying or dipping operations
❑ High piled/rack storage ❑ Temporary membrane structure,tents(>200 sq.ft.)or canopies(>400 sq.ft.)
❑ Provide details on any of the above checked items:
Type of Permit: 0 Commercial ❑ Mulit-Family ❑ Mixed-Use
Property Address: Gayteway Business, 67th Avenue NE Project Valuation: 15000
Lot#: Building G parcel ID No.: 31051400203900 Subdivision:
Project Scope of Work: Himalayan Pet Supply- Installing one walk-in cooler
IBC Construction Type: IBC Occupancy Type:
Building/Space Square Footage: Number of Stories:
Square Footage Per Floor: 1st 2nd 3rd 4th Sth 6th
Primary Contact: ❑ Owner ❑ Architect ❑ Engineer ❑ Contractor
Owner Name: HOOseo Hwang Office No.:
Email Address: Cell No.:
Mailing Address: 20015 67TH AVE NE City: Arlington State: WA Zip: 98223
Architect Name: Office No.:
Email Address: Cell No.:
Mailing Address: City: State: Zip:
Professional License Number: Expiration Date:
Engineer Name: Office No.:
Email Address: Cell No.:
Mailing Address: City: State: Zip:
Professional License Number: Expiration Date:
Primary Contractor: Great Sun Corp Office No.:
Email Address: wtan@greatsuncorp.com greatsuncorp.Com Cell No.: 2063298027
Mailing Address: 5930 1 st Ave S City. Seattle State: WA Zip: 98108
L&I Contractor License Number: GREATSC951 P1 Expiration Date: 04/25
REV03.2022 Page 2 of 6
COMMERCIAL BUILDING
MECHANICAL SYSTEM INFORMATION
Type of Permit: ❑ New Installation ❑ Gas Piping
Mechanical Contractor: Great Sun Corp Office No.: 2063298027
Email Address: wtan@greatsuncorp.com Cell No.:
Mailing Address: 5930 1 st Ave S City: Seattle State: wa zip: 98108
L&I Contractor License Number: GREATSC951 P1 Ex iration Date: 04/25
• New gas piping requires a pressure test hooking to any appliance
• Sediment traps (drips) are required on all gas lines
• Gas lines are required to be supported/secured per IFGS, Section 415
• Proper Combustion air and venting required for all appliances
• A shut-off valve is required within 6 feet of each appliance
Gas Piping Specification and complete Schematic PAGE 4 O Not Applicable
Proposed Piping Material: ❑ CSST ❑ Brass ❑ Black Steel ❑ Galvanized Steel ❑ Other
Proposed Piping Size: ❑ 1/z" ❑ S/s" ❑ 3/4" 711 ❑ 11/z" ❑ 2"
Inlet Pressure: Pressure Drop: Specific Gravity:
MECHANICAL PERMIT FEES (per unit)
Type of Fixture No. of Units Cost per Unit Subtotal
Additional Plan Review fees x $ 75.00 = $
Air Cond.Unit<_100Btu/h x $ 15.00 = $
Air Cond. Unit>10013tu h x $ 25.00 = $
Air Cond. Unit>50013tu h x $ 50.00 = $
Air Handling Units x $ 15.00 = $
Base Mechanical Fee $ 25.00 $ 25.00
Boiler<10013tu/h >3hp x $ 15.00 = $
Boiler>1 million Btu/h<50hp x $ 25.00 = $
Boiler>1.5 million Btu/h<50hp x $ 50.00 = $
Boiler>100Btu h 3-15h x $ 15.00 = $
Boiler>50013tu h 15-30hp x $ 25.00 = $
Diffusers x $ 15.00 = $
Dryer Ducting x $ 15.00 = $
Ductwork(drawings required) x $ 25.00 = $
Evaporative Coolers x $ 15.00 = $
Exhaust Ventilation Fans x $ 15.00 = $
Fire lace Insert Stove x $ 15.00 = $
Forced Air Heat<_100 Btu/h x $ 15.00 = $
Forced Air Heat>100 Btu/h x $ 25.00 = $
Gas Clothes Dryer x $ 15.00 = $
Gas Fired AC :5100 Btu h x $ 15.00 = $
Gas Fired AC >100 Btu h x $ 25.00 = $
Gas Fired AC > 500 Btu h x $ 50.00 = $
Gas Pi in <_ 5 units x $ 15.00 = $
REV03.2022 Page 3 of 6
COMMERCIAL BUILDING
MECHANICAL PERMIT FEES (per unit)
Gas Piping> 5 units (plus <5 units x $ 2.00 = $
Heat Exchangers x $ 15.00 = $
Heat Pump-Condensing Unit x $ 25.00 = $
Hot Water Heat Coils x $ 15.00 = $
Miscellaneous Appliance -regulated by 1 x $ 15.00 = $ 1 5
mechanical code,not otherwise specified
Pkg.Units <_100btu x $ 25.00 = $
Pkg. Units >100btu x $ 50.00 = $
Range/Cook top-Gas Fired x $ 15.00 = $
Refrigeration Unit<_100Btu h x $ 15.00 = $
Refrigeration Unit>100Btu h x $ 25.00 = $
Refrigeration Unit>500Btu h x $ 50.00 = $
Re-inspection fee all x $ 75.00 = $
Unit Heaters <_ 100 Btu/h x $ 15.00 = $
Unit Heaters >100 Btu h x $ 25.00 = $
VAV Boxes (Variable Air Volume,part of air x $ 10.00 _ $
conditioning system)
Wall Heaters - Gas Fired x $ 25.00 = $
Water Heater- Gas Fired x $ 25.00 = $
Permit Fee $15
Table 4-8; Plan Review Fee $40
Processing/Technology Fee $25.00
Total $40
PRESSURE PIPING SCHEMATIC
COMPLETE FOR GAS PIPING ONLY— USE A SEPARATE SHEET, IF NECESSARY
0 SCHEMATIC IS TO SCALE ❑ SCHEMATIC NOT TO SCALE
Show Pipe Size(s) and Length(s) from meter to all appliances
NOTE:Any interior pressure regulators must be indicated
REV03.2022 Page 4 of 6
COMMERCIAL BUILDING
PLUMBING SYSTEM INFORMATION
Plumbing Contractor: n/a Office No.:
Email Address: Cell No.:
Mailing Address: City: State: Zip:
L&I Contractor License Number: Expiration Date:
The following items need to be specified on the plans:
O Fixture specifications and equipment with locations.
O Location and type of all backflow assemblies for each fixture.
O Calculations for Grease Interceptor.
O Pipe size and location of sanitary and potable water systems.
O Riser diagram of waste,vent,and rain water systems,including sizes.
O Medical gas piping riser diagram,type of gas,storage room and size of piping.
PLUMBING PERMIT FEES (per fixture)
Commercial plumbing permits are required to submit line drawings.A plan review fee of 65% per Table 4-6 for
plumbing permits will be assessed at time of submittal. Includes two 2 ins ections with permit.
Type of Fixture No. of Fixtures Cost per Fixture Subtotal
Additional Plan Review fees x $ 75.00 =
Alteration/repair piping x $ 15.00 =
Backflow Assembly x $25.00 =
Base Plumbing Fee 1 $ 25.00 $25.00
Bath Shower Combo x $ 15.00 =
Building Main Waste x $ 25.00 =
Clothes Washer x $ 15.00 =
Dishwasher x $ 15.00 =
Drinking Fountain x $ 15.00 =
Floor Drains x $ 15.00 =
Grease Interceptor x $ 75.00 =
Grease Trap x $ 25.00 =
Hose Bibb x $ 15.00 =
Icemaker Refri erator x $ 15.00 =
Irrigation-per meter x $ 25.00 =
Kitchen Sink&Disposal x $ 15.00 =
Laundry Tray x $ 15.00 =
Lavatory x $ 15.00 =
Med Gas Pipin <- 5 inlets/outlets x $ 60.00 =
Med Gas Piping> 5 inlets/outlets (plus <_ 5 x $ 5.00 =
inlets outlets
Miscellaneous-regulated by plumbing x $ 15.00 =
code,not otherwise specified
Pretreatment Interceptor x $ 15.00 =
REV03.2022 Page 5 of 6
COMMERCIAL BUILDING
PLUMBING PERMIT FEES (per fixture)
Re-inspection Fee all x $ 75.00 =
Roof Drains x $ 15.00 =
Shower (only) x $ 15.00 =
Sink bar, service, etc. x $ 15.00 =
Toilets x $ 15.00 =
Urinal x $ 15.00 =
Vacuum Breakers x $ 25.00 =
Water Heater x $ 25.00 =
Water Heater-Tankless x $ 25.00 =
Permit Fee
Table 4-6; Plan Review Fee
Processing/Technology Fee $25.00
Total
PROPOSED BUILDING USE
❑ New ❑ Retail ❑ Medical ❑ Automotive Based ❑ Industrial
❑ Office ❑ Restaurant ❑ Machine Shop ❑ Other:
CROSS CONNECTION
Please check all appliances that are proposed or permanently connected to the water supply.
❑ Ice Machine ❑ Dialysis Equip. ❑ Air washers
❑ Coffee Urn/Espresso ❑ Hydrotherapy Equip. ❑ Steam Generators
❑ Carbonated Bev. ❑ Dental Equip. ❑ Dye Vats
❑ Fume Hoods ❑ Laboratory Equip. ❑ Pressure Washers
❑ Degreasers ❑ Autoclave/Sterilizers ❑ Cooling Towers
❑ Hot Tub/Spa ❑ Decorative Fountain ❑ Fire Sprinkler
❑ Aquarium ❑ Swimming Pools ❑ Sprinkler w/chemicals
❑ Lawn Irrigation ❑ Well on property ❑ Other:
WASTEWATER DISCHARGE
Does the plumbing system currently have a grease interceptor? ❑ Yes ❑ No ❑ Don't Know
Does the plumbing system currently have an oil/water ❑ Yes
❑ No ❑ Don't Know
separator?
Is water used in the business process (washing,rinsing, ❑ Yes ❑ No ❑ Don't Know
cooling)?
Does your business require a NPDES permit? ❑ Yes ❑ No ❑ Don't Know
I hereby certify that the above information is correct and that the construction on,and the occupancy and the use of
the above-described property will be in accordance with the laws,rules and regulation of the State of Washington.
Signature Print Name Date
REV03.2022 Page 6 of 6
In 0 0 0 a o a o o a is 0 0 0 0 0 0 0 0 0 0 o a
Construction: 4"Hardnose T&G high density urethane Spring Hindged for Automatic Door Gosure r n••+ 39 It
'••p+- foam rail(non CFC class I rigid foam ••'4 3' �' a a 0 a 0 0 0 0 a . 0 0 a 0 0 a 0 a 0 0 0 0 o a
.u6"r•_ nrq� o 0 0 0 0 0 0 o a o 0 0 0 o a o 0 0 0 0 0 0 o a
—4 w/R-25 Insulation for coolers&R-32 for
freezers)with 25 GA galvanized steel ✓ -� Nr=� K�!"^-'' e ° o o Is e ° ° 0 0 0 o
rr•'•--a skins,meeting ASTM A525,4 inch wood tM,.,,,,w,,•
frame.The panels shall comply with ' I rE
lot:0 0 It It It 0 0 0 0 o a o 0 a o 0 0 0 0 0 0 0 0 •
flame spread&smoke index i o 0 0 0 0 0 0 0 0 0 0 o A:o 0 0 0 0 4":
o a A 0
develo menl OR ASTM EB5.The Panels " 0 0 a o a 0 a 0 0 o n a o o a 0 0 o a iiare joined together utilizing Kason type ' ° o a a ° ° 0 a a ° a o ° o ° 0 0 1156 B Camlock Rigid rail locking point in line&Evap.Detail ° ° aPanel Finish Wall lntedor.25 GA Stucco embossed [TyplCal� ca o o a o 0 oOWL� at nearest point t -Egaly aluminum 7.5'-15' a o o a o a o 0 0 o a a o a YWall Extonor 25 GA Stucco embossetl arain ppa I aotooalv steel Cg NF RMy,• b a 0 a a 0 0 a 0 0 0 0ECeiling lntedor.25 GA stucco embossed lrnfaa halm i OIIAieem.
galy.allum. 0 0 ° a ° o o ° ° o a ° O (,�
Ceiling Exterior.25 GA stucco embossed o o e o34 3° G Z N H C
galy.steel t O d
w"a Component Extenor light swilch w/ lot light ra� � 3 O. CY it It 3 4
g p g WALL PANEL LOCKING 6oa000eoo ° r = c� aa
• CD
Vapor proof l t fixture �y
r aa, ThOrmomot0rflush mounted o a 0 a ° a ° o J r0 ♦^ y # Ul
>w •s Refrigeration opae�°BMwda MECHANISM _: ; a a a ° o U) C N
°M1M a• u.-.•.m ty. Front Elevation Light Switch to Light Fixture �:=7,F�� .,f:i,a•..--.:tv",-,;., ," , m aCr o
upu cyder C
e ° ° ° ° 1'FASTENERS TO v m
It
Oty._Mosel M
0 0 0 ° —WALK IN UNIT a � In °r
s,uenr.Capdty BTUIH I _ J In
0 0 ° ° .01.
I31
[AfliM 0 NOTE: 11 1 r_ y
Cooler/Freezer doors are to be ' lid
installed with auto-closures. SCOPE OF WORK: �a
INSTALLING ONE WALK-IN COOLER Y x 2"(16 GA)GALVANIZE -----• e]
Wt W2 W4 LY it Y , PROJECT INFORMATION: ANGLEEIRACKET w
w TENANT:HIMALAYAN PET SUPPLY HILTI 2"HAMMER DRIVE
GAYTEWAY BUSINESS,BUILDING G CONCRETE ACHOR
r 67TH AVENUE NE,ARLINGTON,WA 98223
_ W WALK-IN ACHORING DETAILS
r- � o �?
L)
a
Ir
s �
Z
>� L)
4"x4'PT SLEEPERS C
WRAPPED w/FLASHING ONDESING 2"LAG SCREW
UNIT -THREADED STEEL ROD V,I �y
M121i
!
( �� VWASHERB NUT ••: `
CONDENSER
( /
L WALK-IN
CEILING
PANEL
a N
CO
____ EVAPORATIVE FAN
J.:
FAN VINCINITY MAP Q
SCALE:NTS
K01&: v�
z
z olf
- ` -- U)
_� Z Z) L
16 GA GALVANIZE Z
ANGLE RED
TO FLOOR&SPACED } W
24"APART
CITY OF ARLINGTON W o w w
t . wta
BUILDING DEPARTMENT oa.
J } Q
APPROVE® 0 C15
DATE 3 BY
--Ell-,
awxu «Ee.e ,,S ntsv„na, m REC El
NO CHANGES AUTHORIZED
UNLESS APPROVED BY THE a
�ym "�"� Nppa• `°�R "� "�" "�s'T BUILDING INSPECTOR MAY EQUIPMENT SCHEDULE FOR COOLER
HEET N BER
L» 9'
C U 0) N N
L E N .� >+ N " c cn
0O
ca C � c — U N O
:3 > Lo O X O - E
-_ (a N U a) L N N +,
O Lo — C Lo N E N p -c
Q ca opt, ,C N U U _0
"O cn O U 0 c
U) E
�U) N E
NaCNU) -a ( Q a
.2) U N V 0 U C .0 CL O m Q < Lo _ 'X -r 2
u- .-' O N U
06 C O N N (a Q Lo N i= _� *k *k Z)
H C cu N N E N L O N O `er m m o0
_ _ L
O
p 0 p � C N r C L C O L p �' � o o "=
o Z C N N O O L N +� _ p p n
- - C cu E � Q E N N c � lil a a' o Ecn
L N fA O ocu caw cn ca N •0 O m U
r = E tY N O � > N cn — > > = > = > N Q N � >,
(a O +� N N U (a (a N a) (a N N X ca U O >
! �t 3 cn 3 3 "v H Y > rn � am U cn U rn w 4-0
—
! II
1
!Y ,
N
�0 CITY ®F ARLINQ*g-0rq C o
i 1
BUILDING DEPART EtAW Q
(' APPROVE N
-J� 0 DA gy r�E) p
NO CH
UNLESS APPROVED BY THE
BUILDING INSPECTOR
c a
` ^ u
0 ca m m
m
m a E a
C
9 ry Q � �
1 a � m
111`
Y P4 C ca
co U
0
U Y
C to
Q O)
Y
L C
N O L(j v
n ots a� y m co)m p U C i
0
c
n rn 0 0 o
a) E U LL U) rq, 0 v)
O N _ p6 L C/ a a, Y
U "
N
Y a 0 C co U E N
m U` w m Q N un 3 w
co m p >,N
x 3 p Q0 0
V � o
EV
) a
C oU — �,LLI � c
a) I Lu O N a) 'O
U) X
0 ram, N N (n
U . O Z fn U X 5 c) � =N
O coo U N N . En
H *U)
HEATCRAFr
Worldwide � •
g:) Systems
.4 September 11 No. 25001201
Replaces H-IM-64L(11/05)
Installation and Table of Contents
General Safety Information...............................................................................2
Operation Manual Inspection..........................................»....................................................»„_».2
Warranty Statement..................»...»».....................................................2
Unit Cooler Placement..............................»................................................3
Unit Cooler Mounting».....»..._..................._.......»».». ..„».......»......». 4
Defrost Thermostat....»...............»....»»...................._..................... 5
Expansion Valves and Nozzles........................................................_...._.5-8
Condensate Drain Lines.....................................................................................9
Air Cooled Condensing Unit and Condenser Space and Location
r, -` Requirements......................................................:...................................10
Remote and Water Cooled Condensing Units Requirements...........11
Condensing Unit Rigging and Mounting „.. »»._...»........_»...»...12
CondensingUnit Accessories ._...».....»...»....»..». ......„....»......—...13-17
Suction Filters,Driers,Sight Glasses...........................................................13
DemandCooling........................... ...............................................................14
Head Pressure Control.....................................................................................15
'I Refrigerant Oils...... 16
t o Phase Loss Monitor...........................................................................................17
Recommended Refrigerant Piping Practices- ..........................17
.W; Refrigeration Pipe Supports.........................................................................17
SuctionLines....................»»»..w .»......»............................................_..........18
SuctionLine Risers............................................................................................18
LiquidLines.........................................................................................................18
Hot Gas Defrost Systems..........................................................................19-20
UnitCooler Piping..»...»».......»....................................................................21
LineSizing Charts........................................................................................22-29
Weight of Refrigerants in Copper Lines During Operation................30
—� City&Tower Water Connections..................................................................31
Evacuation and Leak Detection»„..»................_...................................31
Refrigerant Charging Instructions...............................................................32
FieldWiring..........................................................................................................32
xCheck Out and Start Up..................................................................................32
Operational Check Out................................................
System Balancing-Compressor Superheat.............................................33
EvaporatorSuperheat......................................................................................34
General Sequence of Operation..................................................................34
I
Electric Defrost Troubleshooting.................................................................35
Unit Cooler Troubleshooting Guide......................».......... .„..»...__.._.36
System Troubleshooting Guide.__...................................................».»......37
Preventive Maintenance Guidelines.....................................................38-39
Interl-ink Replacement Parts.........................................................................39
Typical Wiring Diagrams...........................................................................40-45
ServiceRecord....................................................................................................46
H-IM-64L-0907 Version 002
General Safety Information
1. Installation and maintenance to be performed only by 3. Make sure that all field wiring conforms to the requirements
qualified personnel who are familiar with this type of of the equipment and all applicable national and local codes.
equipment.
4. Avoid contact with sharp edges and coil surfaces.
2. Some units are pressurized with dry air or inert gas. They are a potential injury hazard.
All units must be evacuated before charging the system
with refrigerant. 5. Make sure all power sources are disconnected before any
service work is done on units.
WARNING: Refrigerant can be harmful if it is inhaled.Refrigerant must be used and recovered responsibly.
Failure to follow this warning may result in personal injury or death.
Inspection
Responsibility should be assigned to a dependable individual at the area available through the distributor;the second through fifth years,
job site to receive material.Each shipment should be carefully checked the purchaser must submit a proof-of-purchase of a compressor and
against the bill of lading.The shipping receipt should not be signed supply it to Heatcraft Refrigeration Products Warranty Claims for
until all items listed on the bill of lading have been accounted.Check reimbursement.
carefully for concealed damage. Any shortage or damages should be
reported to the delivering carrier. Damaged material becomes the Seller makes no express warranties except as noted above.All implied
delivering carrier's responsibility,and should not be returned to the warranties are limited to the duration of the Express Warranty.Liability
manufacturer unless prior approval is given to do so.When uncrating, for incidental and consequential damages is excluded.
care should betaken to prevent damage.Heavy equipment should be
left on its shipping base until it has been moved to the final location. The forgoing is in lieu of all other warranties, express or implied,
Checkthe serial tag informationwith invoice.Report any discrepancies notwithstanding the provisions of the uniform commercial code,the
to your Heatcraft Refrigeration Products Sales Representative. Magnuson-Moss Warranty-Federal Trade Commission Improvement
Act,or any other statutory or common law,federal or state.
Warranty Statement SELLER makes no warranty, express or implied, of fitness for any
Seller warrants to its direct purchasers that products,including Service particular purpose, or of any nature whatsoever, with respect
Parts,manufactured by SELLER shall be of a merchantable quality,free to products manufactures or sold by seller hereunder, except as
of defects in material or workmanship,under normal use and service specifically set forth above and on the face hereof. It is expressly
for a period of one(1)year from date of original installation,or understood and agreed that SELLER shall not be liable to buyer,
eighteen(18)months from date of shipment by SELLER,whichever or any customer of buyer,for direct or indirect,special, incidental,
first occurs. Any product covered by this order found to Seller's consequential or penal damages,or for any expenses incurred by
satisfaction to be defective upon examination at Seller's factory will reason of the use or misuse by buyer or third parties of said products.
at SELLER's option, be repaired or replaced and returned to Buyer To the extent said products may be considered"consumer products;'
via lowest common carrier,or SELLER may at its option grant Buyer As defined in Sec.101 of the Magnuson-Moss Warranty-Federal Trade
a credit for the purchase price of the defective article.Upon return Commission Improvement Act,SELLER makes no warranty of any kind,
of a defective product to SELLER's plant,freight prepaid, by Buyer, express or implied,to"consumers;'exceptas specifically set forth above
correction of such defect by repair or replacement,and return freight and on the face hereof.
via lowest common carrier,shall constitutefull performance by SELLER
of its obligations hereunder.
The following conditions should be adhered to when installing this
SELLER shall have no liability for expenses incurred for repairs made by unit to maintain the manufacturers warranty:
Buyer except by prior,written authorization. Every claim on account (a) System piping must be in accordance with good
of breach of warranty shall be made to SELLER in writing within the refrigeration practices.
warranty period specified above — otherwise such claim shall be (b) Inert gas must be charged into the piping during
deemed waived.Seller shall have no warranty obligation whatsoever if brazing.
its products have been subjected to alteration,misuse,negligence,free (c) The power supply to the unit must meet the
chemicals in system,corrosive atmosphere,accident,or if operation following conditions:
is contrary to SELLER's or manufacturer's recommendations,or if the A. Three phase voltages must be+/-
serial number has been altered,defaced,or removed. 10%of nameplate ratings. Single
phase must be within+10%or
MOTOR COMPRESSORS: -5%of nameplate ratings.
Motor compressors furnished by SELLER are subject to the standard B. Phase imbalance cannot exceed 2%.
warranty terms set forth above, except that motor compressor (d) All control and safety switch circuits must be
replacements or exchanges shall be made through the nearest properly connected according to the wiring diagram.
authorized wholesaler of the motor compressor manufacturer(not at (e) The factory installed wiring must not be changed
SELLER's factory)and no freight shall be allowed for transportation of without written factory approval.
the motor compressor to and from the wholesaler.The replacement (f) All equipment is installed in accordance with
motor compressor shall be identical to the model of the motor Heatcraft Refrigeration Products specified minimum
compressor being replaced.Additional charges which may be incurred clearances.
throughout the substitution of other than identical replacements
are not covered by this warranty.An optional,non assignable,four
(4)year extended compressor warranty may be purchased within
the boundaries of the United Sates of America, its territories and
possessions,and Canada.With this extended compressor warranty,
replacements are administered by an authorized compressor
distributor only. Replacements within the first year of the warranty
2 0 2007,Heatcraft Refrigeration Products LLC
Unit Coolers
Recommended Unit Cooler Placement
Some general rules for evaporator placement which must be pipe runs.
followed are: 5. Location of condensate drains for minimum run.
1. The air pattern must cover the entire room. The size and shape of the storage will generally determine the
2. NEVER locate evaporators over doors. type and number of evaporators to be used and their location.The
3. Location of aisles,racks,etc.must be known. following are some typical examples:
4. Location relative to compressors for minimum
NOTE: Leave space equal to unit height between bottom of unit and
product. Do not stack product in front of fans.
Minimum Unit Clearances
Figure 1. Medium Profile and Large Unit Coolers
I PLAN VIEW T
112 W NOTE: ,
1l2 W PLAN VIEW AIR FLOW 1/2 w W=Total width
of evaporator WmW W� 112w
coil surface.
One evaporator Two evaporators
Figure 2. Low Profile Unit Coolers
IZZ
PLAN VIEW
1 H 112H 1 2H
= PLAN VIEW AIR FLOW NOTE: > 112 H 3 H 1112 H E-
= H=Total height
evaporator
coil surface.
7,177,77777771 Two evaporators
One evaporator
Figure 3. Center Mount Unit Coolers
T
S S
�E�i FMB
T E E
Recommended Maximum-Minimum Dimensions for
Center Mount Unit Cooler Installations.
E .—M
Max. Mid_ Mays.__.Mi: _Max— Min._ Max. ._Min-
25' 2' 20' 1 3' 1 40' 3' 1 40' 6'
3
Unit Cooler Mounting
Most evaporators can be mounted with rod hangers,lag screws,or the unit and the ceiling for cleaning.To comply with NSF Standard 7,
bolts.Use 5/16"bolt and washers or rod for up to 250 pounds,3/8"for the area above the unit cooler must be sealed or exposed in such a way
up to 600 pounds and 5/8"for over 600 rounds.Care should be taken to facilitate hand cleaning without the use of tools. When lagging or
to mount the units level so that condensate drains properly.Note that bolting the unit flush to the ceiling,seal the joint between the top and
some unit cooler designs achieve drain pan slope by using different the ceiling with an NSF listed sealantandendsof open hangerchannels
height mounting brackets. In this situation,the top of the mounting must be sealed to prevent accumulation of foreign matter.
brackets should be level.Adequate support must be provided to hold
the weight of the unit. When locating unit coolers in a cooler or freezer, refer to Figures 1
through 4 for guidelines.
When using rod hangers,allow adequate space between the top of
Figure 4. Large Coolers and Freezers Placement. NOTE: Always avoid placement of Unit Coolers
directly above doors and door openings.
Baffled Unit
Where one wall evaporator Cooler or Freezers where one wall Allow sufficient space between
mounting is satisfactory. will notaccommodate all required rear of Unit Cooler and wall to
evaporators or where air throw permitfree return ofair.Referto
distance must be considered. Figures 1 through 3 for proper
space.
n
Elevation view of glass display door
' Baffle _ cooler or freezer. Be sure air discharge
blows above, not directly at doors.
Glass Provide baffle if door extends above
Display — blower level.
Door
Cooler or Freezer with Glass
Display Doors
Defrost
Many types of control arrangements can be used.in some applications, during the defrost period.
it may not be necessary to have scheduled defrost periods.The normal
"off cycle"of the compressor may be adequate to keep the evaporator For most applications,two to four defrost cycles per day should be
coil clear of frost.In other applications,a defrosttimermaybe necessary adequate.The defrost requirements will vary on each installation so
to help assure a clear coil.In a medium temperature environment,"air the defrost settings should be determined by observing the system
defrost"is initiated by the timer,but the evaporator fans continue to operation.
operate to facilitate the melting of frost on the fin sur face.Other types
of defrost schemes require that the fans on the evaporator shut off
4
Defrost Thermostat
Adjustable(F25-209 Series)
The defrost duration is determined by the setting of the defrost
termination thermostat.Initially,the thermostat should be set at mid-
range.Thiswill terminate the defrostatabouta60oFbulbtemperature Note: Defrost controls are positioned as determined
which will be satisfactoryfor most applications.A somewhat longer or by engineering test.Job conditions may require
shorter defrost can be obtained byadjusting the control clockwisefor a the sensing device to be relocated for optimal
shorterdefrost and counterclockwiseforalongerdefrost.Thefandelay defrosting.
temperature setting of the thermostat is factory set at 257.It can be
adjusted upward by turning the adjusting screw next to the duration Bimetal Disc
adjustment with a small screwdriver.Each complete clockwise rotation
ofthisscrew raises the setting approximately3°F.This screw should not A bimetal disctypethermostat is wired to the control circuitto terminate
be adjusted more than four turns. Making this adjustment also raises the defrost cycle when the coil temperature reaches approximately55°F.
the defrost termination temperature setting of the thermostat by a The bimetal disc thermostat provides a fan delay to allow moisture on
similar amount. For example,with the duration setting at mid-range, the coil to freeze after defrost termination.
the termination temperature would be approximately 60oF. Turning
the adjusting screw one turn would raise the fan delay temperature to Note: On systems where the suction temperature is
about28°Faswellas changing theterminationtemperaturefrom60°Fto above approximately 25°F,the fans may not
63°F.On medium temperature applications it may benecessarytoraise start for an extended period of time.
the setting to assure that the thermostat will reset after a defrost.
Adjustable(060-100-00 Series) On freezer applications,it may be necessary to apply a jumper to the
fan delay on a warm box.This can be corrected by jumping the fan
This control has an adjustable defrost termination setpoint and an switch contacts.This will allow the fans to start immediately after
adjustable differentialrorcontrollingthefandelay.Atypicaltermination defrost termination.This will disable the fan delay.
setting is 60DF with a 25°F differential.Termination setting may be
adjusted to increase/decrease the length of defrost.The differential If moisture blow-off is encountered without the fan delay,a higher
should be adjusted to turn on the fans at 30 to 35°F(Fan Temperature temperature defrost thermostat can be ordered. This thermostat
=Termination Temperature-Differential).Actual coil temperature will terminates defrost at 60°F and prevents the fans from running when
be 5 to 10°F below this value.Some unit coolers are preset and labeled the coil temperature is above 40oF. Refer to the replacement parts list
at the factory with special settings. for the correct number to order.
Table 1. Expansion Valve Selection For 100#Head Pressure Valve
BTUH R-507/111404A R-507/R404A R-22 R-22
at about -20'F/-290C Evap. +25'F/-4°C Evap. -20°F/-29°C Evap. +25°F/-4°C Evap.
10°T.D. Sporlan ALCO Sporlan ALCO Sporlan ALCO Sporlan ALCO
3,000-5,000 EGSE 1/2 ZP HFESC-1/2-RZ EGSE 1/2 C HFESC-1/2-RC EGVE 1/2 Z HFESC-I-HZ EGVE 1/2 C HFESC-1/2-HC
5,500-7000 EGSE 1/2 ZP HFESC-1/2-RZ EGSE 1 C HFESC-1/2-RC EGVE 1 ZP HFESC-1-HZ EGVE I C HFESC-I-HC
7500-8000 EGSE 1 ZP HFESC-1/2-RZ EGSE 1 C HFESC-I-RC EGVE I ZP HFESC-1 1/2-HZ EGVE 1 C HFESC-I-HC
8500-10,000 EGSE IZP HFESC-I-RZ _EGSE 11/2C HFESC-11/4-RC EGVE 11/2ZP HFESC-11/2-HZ EGVE IC HFESC-I-HC
10,500-11,000 EGSE IZP HFESC-11/4-RZ EGSE 11/2C HFESC-11/4-RC EGVE 11/2ZP HFESC-2-HZ EGVE 11/2C HFESC-I-HC
11,500-13,000 EGSE 11/2ZP HFESC-11/2-RZ EGSE11/2C HFESC-11/4-RC EGVE 11/2ZP HFESC-2-HZ EGVE 11/2C HFESC-I-HC
13,500-15,000 EGSE 11/2ZP HFESC-2-RZ EGSE 2C HFESC-11/2-RC EGVE 2ZP HFESC-21/2-HZ EGVE 11/2C HFESC-2-HC
15,500-17,000 EGSE 2 ZP HFESC-2-RZ EGSE 2 C HFESC-2-RC EGVE 2 ZP HFESC-21/2-HZ EGVE 2 C HFESC-2-HC
17,500-20,000 EGSE 2 ZP HFESC-3 1/2-RZ SSE 3 C HFESC-2-RC EGVE 3 ZP HFESC-3-HZ EGVE 2 C HFESC-2 1/2-HC
20,500-24,000 SSE 3 ZP HFESC-3 1/2-RZ SSE 3 C HFESC-3-RC SVE 3 ZP HFESC-3-HZ SVE 3 C HFESC-3-HC
24,500-28,000 SSE 3 ZP HFESC-3 1/2-RZ SSE 4 C HFESC-3-RC SVE 4 ZP HFESC-5 1/2-HZ SVE 3 C HFESC-3-HC
28,500-34,000 SSE4ZP HFESC-5-RZ SSE4C HFESC-3-RC SVE 5ZP HFESC-51/2-HZ SVE4C HFESC-51/2-HC
34,500-40,000 OSE 6 ZP HFESC-5-RZ SSE 6 C HFESC-5-RC SVE 8 ZP HFESC-5 1/2-HZ SVE 4 C HFESC-5 1/2-HC
40,500-50,000 OSE 8 ZP HFESC-7-RZ OSE 8 C HFESC-5-RC SVE 10 ZP HFESC-8-HZ SVE 5 C HFESC-5 1/2-HC
50,500-60,000 OSE 9 ZP HFESC-10-RZ OSE 9 C HFESC-7-RC SVE 10 ZP HFESC-8-HZ SVE 8 C HFESC-8-HC
60,500-70,000 OSE 9 ZP HFESC-10-RZ OSE 9 C HFESC-10-RC OVE 15 ZP HFESC-10-HZ SVE 8 C HFESC-8-HC
70,500-80,000 OSE 12 ZP HFESC-10-RZ OSE 12 C HFESC-10-RC OVE 15 ZP HFESC-I5-HZ SVE 10 C HFESC-10-HC
r8O,500-90,000 OSE 12 ZP HFESC-I3-RZ OSE 12 C HFESC-10-RC OVE 15 ZP HFESC-I5-HZ SVE 10 C HFESC-10-HC
00-100,000 OSE 12 ZP HFESC-I3-RZ OSE 12 C HFESC-I3-RC OVE 15 ZP HFESC-I5-HZ OVE 15 C HFESC-I5-HC
500-110,000 OSE 21 ZP TRAE-20-RZ OSE21 C HFESC-I3-RC OVE20ZP HFESC-20-HZ OVE 15 C HFESC-I5-HC
500-120,000 OSE21ZP TRAE-20-RZ OSE 21 C HFESC-I3-RC OVE20ZP HFESC-20-HZ OVE15C HFESC-I5-HC
500-130,000 OSE 21 ZP TRAE-20-RZ OSE 21 C TRAE-20-RC OVE 20 ZP HFESC-20-HZ OVE 15 C HFESC-15-HC
NOTES:
1. Valve selections assume standard conditions and 100°F vapor-free liquid.
2. Equivalent valve may be used in place of selection.
3. For"Medium Temp R-507;'valve designation will use"P"for refrigerant code.
5
Table 2. Expansion Valve Selection 180#Head Pressure Valve
BTUH R-507/11404A R-507/11404A R-22 R-22
at about -20°F/-29°C Evap. +25°F/-4°C Evap. -20°F/-29°C Evap. +25°F/-4°C Evap.
10*T.D. Sporlan ALCO Sporlan ALCO Sporlan ALCO Sporlan ALCO
3,000-5,000 EGSE 1/2ZP HFESC-1/2-RZ EGSE 1/2C HFESC-1/2-RC I EGVE 1/2ZP HFESC-1/2-HZ EGVE 1/2C HFESC-1/2-HC
5,500-7000 EGSE 1/2 ZP HFESC-I-RZ EGSE 1 C HFESC-1/2-RC EGVE 1 ZP HFESC-I-HZ EGVE 1/2 C HFESC-I-HC
7500-8000 EGSE 1 ZP HFESC-I-RZ EGSE 1 C HFESC-1/2-RC EGVE 1 ZP HFESC-I-HZ EGVE 1 C HFESC-I-HC
8500-10,000 EGSE 1 ZP HFESC-I-RZ EGSE 1 C HFESC-I-RC EGVE11/2 ZP HFESC-1 1/2-HZ EGVE 1 C HFESC-I-HC
10,500-11,000 EGSE 1 ZP HFESC-1 1/4-RZ EGSE 11/2C HFESC-I-RC EGVE 11/2 ZP HFESC-1 1/2-HZ EGVE 1 C HFESC-I-HC
11,500-13,000 EGSE 11/2ZP HFESC-11/4-RZ EGSE11/2C HFESC-11/4-RC EGVE11/2ZP HFESC-2-HZ EGVE IC HFESC-11/2-HC
13,500-15,000 EGSE 2 ZP HFESC-1 1/2-RZ EGSE 11/2 C HFESC-1 1/4-RC EGVE 2 ZP HFESC-2-HZ EGVE 11/2 C HFESC-1 1/2-HC
15,500-17,000 EGSE 2 ZP HFESC-2-RZ EGSE 2 C HFESC-1 1/2-RC EGVE 2 ZP HFESC-21/2-HZ EGVE 11/2 C HFESC-1 1/2-HC
17,500-20,000 EGSE 2 ZP HFESC-2-RZ EGSE 2 C HFESC-1 1/2-RC EGVE 3 ZP HFESC-21/2-HZ EGVE 11/2 C HFESC-2-HC
20,500-24,000 SSE 3 ZP HFESC-3-RZ SSE 3 C HFESC-2-RC SVE 3 ZP HFESC-3-HZ SVE 2 C HFESC-2-HC
24,500-28,000 SSE 4 ZP HFESC-3-RZ SSE 3 C HFESC-2-RC SVE 4 ZP HFESC-3-HZ SVE 3 C HFESC-2 1/2-HC
28,500-34,000 SSE 4 ZP HFESC-5-RZ SSE 4 C HFESC-3 1/2-RC SVE 4 ZP HFESC-5 1/2-HZ SVE 3 C HFESC-3-HC
34,500-40,000 SSE 6 ZP HFESC-5-RZ SSE 6 C HFESC-31/2-RC SVE 5 ZP HFESC-51/2-HZ SVE 3 C HFESC-3-HC
40,500-50,000 OSE 9 ZP HFESC-7-RZ SSE 6 C HFESC-3 1/2-RC SVE 8 ZP HFESC-5 1/2-HZ SVE 4 C HFESC-51/2-HC
50,500-60,000 OSE 9 ZP HFESC-7-RZ OSE 9 C HFESC-5-RC SVE 10 ZP HFESC-8-HZ SVE 5 C HFESC-5 1/2-HC
60,500-70,000 OSE 9 ZP HFESC-10-RZ OSE 9 C HFESC-7-RC OVE 15 ZP HFESC-8-HZ SVE 5 C HFESC-5 1/2-HC
70,500-80,000 OSE 12 ZP HFESC-10-RZ OSE 12 C HFESC-7-RC OVE 15 ZP HFESC-10-HZ SVE 8 C HFESC-8-HC
80,500-90,000 OSE 12 ZP HFESC-1 O-RZ OSE 12 C HFESC-10-RC OVE 15 ZP HFESC-10-HZ SVE 8 C HFESC-8-HC
90,500-100,000 OSE 12 ZP HFESC-I3-RZ OSE 12 C HFESC-10-RC OVE 15 ZP HFESC-15-HZ SVE 10 C HFESC-8-HC
100,500-110,000 OSE 12 ZP HFESC-I3-RZ OSE 12 C HFESC-1 O-RC OVE 20 ZP HFESC-15-HZ SVE 10 C HFESC-10-HC
110,500-120,000 OSE 12 ZP HFESC-I3-RZ OSE 12 C HFESC-10-RC OVE 20 ZP HFESC-15-HZ SVE 10 C HFESC 10 HC
120,500-130,000 OSE 21 ZP HFESC-I3-RZ I OSE 12 C HFESC-I3-RC OVE 20 ZP HFESC-15-HZ I OVE 15 C HFESC-10-HC
Figure 5. Bulb and Contact Location n
12
9:00 9 L 3 3:00
a:00 6 4:00
Figure 6. Multiple Evaporators
Above and Below Main Suction Line
Flow from upper valve cannot
affect bulb...line free draining
Inverted trap to avoid oil
draining Into idle evaporator
Free draining
6
Distributor Nozzles
Nozzles supplied with unit coolers are selected for numerous may occur and poor evaporator operation may be experienced.
refrigerants at cataloged operating conditions and 95'F liquid entering For peak performance,it is importantto select an expansion valve with
the expansion valve.If mechanical or another method of subcooling the correct capacity and selective charge.Thermostatic expansion
is used,the nozzle and expansion valve selection should be checked. valves may be mounted in any position,but they should be installed
For conditions outside those cataloged, use the charts to select a asclosetothe evaporatoras possible.For best performance,the outlet
proper nozzle. Nozzle capacity should be within 135%to 180% of of the expansion valve should be installed directly to the distributor
unit operating condition for optimum coil performance.Nozzles are body.If this is not possible,the distance between the valve outlet and
available from Sporlan Wholesalers or from Heatcraft Refrigeration distributor should not exceed 24 inches.Elbows located between the
Products.A small nozzle can be drilled larger using the I.D.column in expansion valve and distributor will hinder proper distribution and
table 3,page 8.The hole must be accurately centered in the nozzle.A therefore, are not recommended. Some accessories may, however,
lathe is preferred for accurate drilling. necessitate the use of elbows.
Expansion Valves and Distributor Nozzles Locate the expansion valve bulb on a horizontal length of suction
Before installing the expansion valve on the distributor of the line as close to the suction header as possible. The bulb should be
evaporator, the proper distributor nozzle must be installed. Two clamped tightly on the suction line and insulated with a waterproof
nozzles are normally shipped with each evaporator for different type of insulation.The bulb should never be placed on a coupling or
refrigerants.Select the nozzle for the refrigerant that will be used. other obstruction so asto not make 100%contact with the suction line.
The size of the nozzles shipped with each evaporator is based on The bulb should never be placed in a trap or downstream of a trap in
ordinary conditions,usually 95`F liquid temperature and a maximum a suction line.Locating the bulb on the bottom of a suction line is not
of 15'F evaporator TD*. If a mechanical subcooler is to be used in recommended.The bulb should be installed at the 3,4 or 8,9 o'clock
your system, consult the factory or a representative for distributor position on the suction line.See Figure 5 on page 6.
nozzle sizing.This is very important as the nominal capacity of the
nozzle increases as the liquid refrigerant temperature is lowered.
If the correct size nozzle is not installed,poor refrigerant distribution
*Temperature Difference
(design room temperature minus saturated suction temperature)
Selecting Distributor Nozzle at the Job Site
You must know 4 things: EXAMPLE: Select a nozzle for R404A,-20'F suction; 9,400
1. Refrigerant BTUH,60'F liquid entering TXV.
2. Evaporating Temperature
3. Tons or BTUH 9,400 = .78Tons [1.83 Factor
4. Highest Liquid Temperature 12,000 for 60'F Liquid]
EXAMPLE: Select a nozzle for R22,20'F suction;67,000 0.78
BTUH,100'F liquid entering TXV. _ .42 Corrected Tons
67,000 1.83
=12,000 5.58 Tons From Table 3 on page 8 select Size 3/4 rated at 0.29 tons.
From Table 3 on page 8 select Size 4 rated at 3.84 tons.We prefer 0.42 = 145%of Nominal Rating -okay.
selecting at 135%-180%of nominal rating.This is typically two sizes 0.29
smaller than the closest tonnage in Table 3.
5.58
3.84 145%of Nominal Rating - okay. Typical selections would be between 135%and 180%.
7
Worksheet:
Given Values Liquid Correction Factor:
Refrigerant °F liquid = Factor
Suction Temperature F Tons - Factor = _Corrected Tons
BTUH Nozzle Selections(Table 3)
Liquid Temperature F Tons - Nozzle Capacity = %
Calculations: BTUH - 12,000 = Tons (if within 135%to 180%,it is acceptable)
Table 3. Distributor Nozzle Capacities in Tons of Refrigeration
Nozzle Evaporator(Saturated Suction)Temperature*F
Orifice R22 R404A,R507,R402A R134a,R401A
No. I.D.(in.) 40` 20° 0° -20° -40° 40' 20* 0° -20' -40° 40° 20° 0-
1/4 0.052 0.34 0.26 0.21 0.18 0.15 0.23 0.17 0.13 0.11 0.09 0.20 0.15 0.12
1/3 0.060 0.44 0.34 0.28 0.23 0.20 0.30 0.23 0.18 0.14 0.11 0.26 0.20 0.15
1/2 0.070 0.61 0.48 0.38 0.32 0.27 0.41 0.31 0.24 0.19 0.16 0.36 0.27 0.21
3/4 0.086 0.92 0.72 0.58 0.48 0.41 0.62 0.47 0.37 0.29 0.24 0.54 0.41 0.32
1 0.100 1.23 0.96 0.78 0.64 0.55 0.83 0.63 0.49 0.39 0.32 0.72 0.54 0.43
1-1/2 0.120 1.79 1.40 1.13 0.94 0.80 1.20 0.92 0.71 0.57 0.46 1.05 0.79 0.63
2 0.141 2.46 1.92 1.55 1.29 1.10 1.65 1.26 0.98 0.78 0.64 1.44 1.09 0.86
2-1/2 0.157 3.07 2.39 1.93 1.60 1.37 2.06 1.57 1.22 0.97 0.79 1.79 1.35 1.07
3 0.172 3.68 2.87 2.32 1.93 1.65 2.47 1.88 1.47 1.17 0.95 2.15 1.63 1.28
4 0.199 4.92 3.84 3.10 2.58 2.20 3.31 2.52 1.96 1.56 1.27 2.88 2.18 1.72
5 0.221 6.07 4.74 3.83 3.18 2.72 4.08 3.11 2.42 1.93 1.57 3.55 2.68 2.12
6 0.242 7.28 5.68 4.59 3.81 3.26 4.89 3.72 2.91 2.31 1.88 4.26 3.22 2.54
8 0.266 8.77 6.84 5.52 4.59 3.93 5.89 4.49 3.50 2.79 2.27 5.13 3.88 3.06
10 0.281 9.83 7.67 6.19 5.15 4.40 6.60 5.03 3.92 3.12 2.54 5.75 4.35 3.43
12 0.313 12.10 9.47 7.65 6.36 5.43 8.16 6.21 4.84 3.86 3.14 7.10 5.37 4.24
15 0.348 15.10 11.70 9.48 7.88 6.74 10.10 7.70 6.01 4.78 3.89 8.81 6.65 5.25
17 0.368 16.80 13.10 10.60 8.81 7.54 11.30 8.61 6.72 5.35 4.35 9.85 7.44 5.87
20 0.404 20.30 0 12.$0 .60 9.08 13.60 10.40 8.10 6.45 g7.54
11.90 .97 7.08
25 0.453 25.50 19.90 16.10 13.40 11.40 17.10 13.10 10.20 8.11 14.90 11.30 8.91
30 0.484 29.20 22.80 18.40 15.30 13.10 19.60 14.90 11.60 9.27 17.10 12.90 10.20
Note:Based on 1007 liquid entering expansion valve.
(1 ton=12,000 BTU/H)
Table 4. Liquid Temperature Correction Factor
Liquid Temperature°F 30° 40° 50° 1 60° 70° 80° 90° 95° 100' 110° 120°
Correction Factor 3.02 2.55 2.10 1.83 1.59 1 1.37 1.17 1 1.06 1.00 1 0.85 0.72
NOTE: Tons X Correction Factor = Nozzle Capacity Nozzle Capacity(Tons) X 12,000 = BTUH Rating
Table 5. Pressure Drop vs.Nozzle Loading
Actual Load at a Percent of Above Rating
Group 80% 90% 10011% 110% 120% 130% 140% 150% 160% 170%
Nozzle PSI *M 10 12 l 15 18 20 22 24 27 29 31
Drop 'H 16 I 20 25 30 35 38 40 43 46 49
M Gwoup = R12,MR39,R134a. 'H Group = R22,R404A,R502,R507,HP80.
8
Condensate Drain Lines Figure 7. Condensate Drain Lines
Eithercopper or steel drain lines should be used and properly protected
from freezing.In running drain lines,provide a minimum 1/4 inch per
foot pitch for proper drainage.Drain lines should beat least as large as the evaporator drain connection.All plumbing connections should be
made in accordance with local plumbing codes.All condensate drain
lines must be trapped,and run to an open drain.They must never be
connected directlyto the sewer system.Traps In the drain line must be
located in a warm ambient.We recommend a trap on each evaporator
drain line priortoanytee connections.Traps located outside,or extensive
outside runs of drain line must be wrapped with a drain line heater.
The heater should be connected so that it operates continuously.It
is recommended that the drain line be insulated to prevent heat loss.
A heat input of 20 watts per linear foot of drain line for 0°F (-18'C)
room applications and 30 watts per linearfoot for-207(-29'C)rooms
is satisfactory. In freezers,the evaporator drain pan fitting should be
included when heating and insulating the drain line. DRAIN LINE MIN.
Inspect drain pan periodically to insure free drainage of condensate. PITCH-1/4"/FT.
If drain pan contains standing water,checkfor proper installation.The VAPOR SEAL
drain pan should be cleaned regularly with warm soapy water.
WARNING: All power must be disconnected before clean- TRAP
ing.Drain pan also serves as cover of hazardous
moving parts.Operation of unit without drain V
pan constitutes a hazard. OPEN
DRAIN
Traps on low temperature units must be outside of refrigerated
enclosures.Traps subject to freezing temperatures must be wrapped
with heat tape and insulated.
NOTE: Always trap single evaporator system drain
lines individually to prevent humidity migration.
9
Space and Location Requirements for
Air Cooled Condensing Units and Remote Condensers
The most important consideration which must be taken into account Another consideration which must be taken is that the unit should be
when deciding upon the location of air-cooled equipment is the mounted away from noise sensitive spaces and must have adequate
provision for a supply of ambient airto the condenser,and removal of support to avoid vibration and noise transmission into the building.
heated airfrom the condensing unitor remote condenserarea.Where Units should be mounted over corridors,utility areas,rest rooms and
this essential requirement is not adhered to, it will result in higher other auxiliary areas where high levels of sound are not an important
head pressures,which cause poor operation and potential failure of factor. Sound and structural consultants should be retained for
equipment.Units must not be located in the vicinity of steam,hot air recommendations.
or fume exhausts.Corrosive atmospheres require custom designed
condensers.
Figure 8. Space and Location Requirements for Condensing Units and Remote Condensers
Walls or Obstructions Multiple Units
The unitshould be located so thatair may circulatefreely and not For units placed side by side,the minimum distance between
be recirculated.For proper airflow and access all sides of the unit units is the width of the largest unit.If units are placed end
should be a minimum of"W"awayfrom any wall or obstruction.It to end,the minimum distance between units is 4 feet.
is preferred that this distance be increased whenever possible.Care
should betaken tosee thatample room is left for maintenance work
through access doors and panels.Overhead obstructions are not
permitted.When the unit is in an area where it is enclosed bythree
walls the unit must be installed as indicated for units in a pit.
AIR FLOW
AIR FLOW AIR FLOW
W W'
MIN. MIN_ -
I
+y r'+ L- -•-���w•��••_r��-::=n',�A-fJ./�� �+.n^�.,
Units in Pits Decorative Fences
The top of the unit should be level with the top of the pit,and Fences must have 50%free area,with 1 foot undercut,a"W"
side distance increased to"2W". minimum clearance,and must not exceed the top of unit.
If these requirements are not met,unit must be installed as
If the top of the unit is not level with the top of pit,discharge indicated for"Units in pits".
cones or stacks must be used to raise discharge air to the top of
the pit.This is a minimum requirement.
STACK --, _ AIR FLOW
(BY OTHERS AIR �_ 1
IF SUPPLIED FLOW 10 X �' 1' MIN. MIN.
�. MIN.
_ 2W'
G MIN, MIN-
T
Walls or Obstructions for Horizontal Air Flow Multiple Units with Horizontal Air Flow
AIR FLOW AIR FLOW
W" �.
AIR MIN.
FLOW MIN.
W'1MIN. W'MIN.
A...,.^�1^n pnr� ��per.+ ♦y I
* "W"=Total width of the condensing unit or condenser.
10
Requirements for Remote and Water Cooled
Condensing Units
General Installation
The indoor compressor units are designed to be used with a remote Notes:
condenser. The water cooled units are similar,except that they have 1. All oil traps are to be as short in radius as possible.
an integral water cooled condenser.Inlet and outlet water connections Common practice is to fabricate the trap using three
are to be made in the field.On units having a compressor wdter jacket, 90 degree ells.
incoming water shall be routed through the jacket prior to entering 2. Pressure relief valves are recommended at the condenser
the condenser. For cleaning purposes,condenser end plates can be for protection of the coil.
removed to give access to the water tubes. Cleaning is accomplished
by a simple spiral tool powered by an ordinary electric drill. During 3. A pressure valve at the high point in the discharge line is
installation, allow space for cleaning the condenser. Commercial recommended to aid in removing non-condensables.
equipment of this type is intended for installation by qualified 4. The placement of a subcooler should be that it does not
refrigeration mechanics. interfere with normal airflow of the condenser.Increased
static of the unit could cause a decrease in system capacity
Typical Arrangements and fan motor damage.
Diagram 1 illustrates a typical piping arrangement involving a remote
condenser located at a higher elevation,as commonly encountered GPM Requirements
when the condenser is on a roof and the compressor and receiverare The GPM Requirements table below can be used as a guide for
on grade level or in a basement equipment room. determining water flow requirements of the condenser. Operation
below the minimum flow rates may result in excessive fouling and
In this case,the design of the discharge line is very critical. If properly poor heat transfer.Operation above the maximum flow rates risk
sized for full load condition, the gas velocity might be too low at premature impingement corrosion and tube failure.
reduced loads to carryoil up through the discharge line and condenser
coil. Reducing the discharge line size would increase the gas velocity
sufficiently at reduced load conditions;however,when operating at
full load,the line would be greatly undersized,and thereby creating an Water Cooled Condenser GPM Requirements
excessive refrigerant pressure drop. This condition can be overcome Model Min GPM Max GPM Rated GPM*
in one of two of the following ways: SWN0075H2 1 0.7 ! 5 1 1.25
SWN0075M2 0.7 5 1 1.5
1. The discharge line may be properly sized for the desired pressure SWN0090H2 1 0.7 5 2
SWN0090M6 0.7 5 2.25
drop atfull load conditions and an oil separator installed atthe bottom SWN0100H2 0-7 5 1 2
of the trap in the discharge line from the compressor. SWN0150H2 1 0.7 5 2.5
SWN01501-6 1 0.7 5 1 1.5
2. A double riser discharge line may be used as shown in Diagram 2. SWN0199M6 0.7 5 4
Line"A"should be sized to carrythe oil at minimum load conditions and SWN0200H2 1 2 18 SWN02001-6 I 2 18 1 2 2
the line"B"should be sized so thatatthefull load conditions both lines SWN020oM2 1 2 18 1 5
would have sufficient flow velocity to carry the oil to the condenser. SWN020oM6 I 2 18 1 7
SWN0210L6 2 1$ 1 3
Water Regulating Valve SWN0310E6 4 18 5
Using this control on the water cooled condensing units,the head SWN030oH2 4 18 6
SWN03101-6 4 I 18 I 4
pressure can be maintained by adjusting the flow of water through SWN0310M6 4 18 1 9
the condenser section.This type control is most often located on the SWN0311 L6 4 18 6
water entering side of the condenser and is regulated by the refrigerant SWN0400H2 4 18 t1
condensing pressure. SWN040oL6 4 18 7
SWN0499H2 7.5 23 10
SWN0500H2 7.5 23 12.5
Subcooler SWN0500M6 7.5 23 15
Diagrams 1 and 2 below show typical subcooler piping. Diagram 1 SWN05991-6 7.5 23 7.5
is the preferred connection with receiver as it provides maximum SWN0600L6 7.5 23 l0
subcooling. Diagram 2 may be used if the receiver is located far from SWN0601 L6 7.5 23 10
the condenser. SWN0750112 10 25 12.5
SWN07501-6 10 25 10
SWN07601-12 10 25 1 15
SWN0761 H2 I 10 1 25 1 20
SWN0900L6 1 20 67 1 20
SWN1000H2 1 20 67 30
SWN10001-6 1 20 1 67 20
/P`••:01t SWN1500H2 20 80 35
SWN1500L6 20 80 1 20
o SWN2000H2 20 80 40
5WN2200L6 20 80 25
9�BL'Io1FA OISaw,G[
Low Temp.Rating Point:-20°F SST,85°F EWT,105°F CT,5°F SC
Medium/High Temp.Rating Point:25T SST,85°F EWT,105T CT,
J - 5°F SC
Diagram 1 Diagram 2
11
Condensing Unit Rigging and Mounting
Rigging holes are provided on all units. Caution should be exercised Provide adequate space at the compressor end of the unitfor servicing.
when moving these units.To prevent damage to the unit housing Provide adequate space on the connection side to permit service of
during rigging,cables or chains used must be held apart by spacer components.
bars.The mounting platform or base should be level and located so
as to permit free access of supply air. Spring Mounted Compressor
Compressors are secured rigidlyto make surethere is no transit damage.
Ground Mounting Before operating the unit,it is necessary to follow these steps:
Concrete slab raised six inches above ground level provides a suitable a. Remove the upper nuts and washers.
base.Raising the base above ground level provides some protection b. Discard the shipping spacers.
fromgroundwaterand wind blown matter.Before tightening mounting C. Install the neoprene spacers.(Spacers located
bolts,recheck level of unit.The unit should in all cases be located with in the electrical panel or tied to compressor.)
a clear space in all directions that is at a minimum,equal to the height d. Replace the upper mounting nuts and washers.
of the unitabovethe mounting surface.Acondensing unit mounted in e. Allow 1/16 inch space between the mounting nut/
a corner formed by two walls,may result in discharge air recirculation washer and the neoprene spacer.See Figures 9
with resulting loss of capacity. and 11 below.
Roof Mounting Rigid Mounted Compressor
Due to the weight of the units, a structural analysis by a qualified Some products use rigid mounted compressors.Checkthe compressor
engineer maybe required before mounting.Roof mounted units should mounting bolts to insure they have not vibrated loose during shipment.
be installed level on steel channels or an I-beam frame capable of See Figure 10 below.
supporting the weight of the unit.Vibration absorbing pads or springs
should be installed between the condensing unit legs or frame and
the roof mounting assembly.
Access
Figure 9. Spring Mount Figure 10.Solid Mount for Mobile or Deep
Sump Application.
Washer
102-0008-13 Compressor
��4✓ Compressor Mounting Foot/
Mounting
Foot
+ I
y r�
�\ q Shipping
Spacer —
Spacer
027-0189-00
Mounting
Stud Figure 11.Spring Mount
Mounting M /Mounting Stud
Nut,Upper Mounting Nut �/
I I {Upper}
I I
Rubber
Spacer Compressor
Mounting Foot dubber Spacer
—Mounting
I I j Spring
Mounting
Rubber Spacer ,./ Spring
(Lower)
Mounting Mounting Base
Nut,Lower
�—Mounting
Base
Lockwasher
Lockwasher Locking Device \Mounting Nut
(Lower)
Mount is shown in properly adjusted position.
12
Condensing Unit Accessories
Suction Filters, Driers, Sight Glasses
There are two types of suction and liquid filter/driers used on The basic servicing of these units is similar to suction filters.Liquid
Heatcraft Refrigeration Products units. Replaceable core and/or I ine driers should be replaced whenever there is evidence of excessive
sealed units are used,dependent upon the option package ordered. pressure drop across the filter,or the system becomes contaminated
due to system leaks, compressor burnouts, acid formation, or
Suction filters, regardless of type, are always installed upstream of moisture accumulation as indicated by the liquid line sight glass.
the compressor suction service valve,and any accumulators or other
options that may be installed. Suction filters are equipped with The sightglass is installed inthemain liquid line assembly,downstream
"Schrader"type access valves to allow field measurement of pressure from the receiver outlet service valve,and immediately after the liquid
drop across the device.This allows plugged filters and elements to line drier. The sight glass is designed to give a visual indication of
be identified very quickly and easily so Lhey can be replaced when system m oistu re content with refrigerantflowing.Slight color indication
the pressure drop is excessive. Refer to the specific manufacturers' on a new system is common and will be eliminated during system
recommendation on servicing these units by make and model. evacuation.Generally,it requires no field service.However,in cases of
extreme acid formation in a system after a compressor burnout,the
Liquidfilter/driers,regardless of type,are always installed downstream acid may damage the sensing element or etch the glass.This would
of the receiver outlet service valve,and upstream of the liquid line require that the sight glass be replaced,along with the liquid line drier
solenoid valve(if supplied).Liquid line driers may or may not have an after any compressor motor burnout.
access valve,dependent on the size and application.
Table 6. Recommended Low Pressure Control Settings for Outdoor Air Cooled Condensing Units
R-22 R-404A/R-507 R-134a
"Minimum Cut-In Cut-Out Cut-In Cut-Out Cut-In Cut-Out
Temp.`F PSI PSI PSI PSI PSI PSI
50 70 20 90 35 45 15
40 55 20 70 35 35 10
30 40 20 55 35 25 10
10 30 10 45 25 13 0
0 15 0 25 7 8 0
-10 15 0 20 1 — --
-20 10 0 12 1 -
-30 6 I 0 8 1"Hg. - -
"Minimum ambient or box temperature anticipated,high pressure control setting:R-22,360 PSI;R-404A,R-507,400 PSI;R-134a,225 PSI
"The standard preset low pressure switch used for pumpdown is set for 15 PSI cut in/4 PSI cut out and is a good setting for most pumpdown systems
"ZB Scroll compressors should be set for 25 PSI cut in/17 PSI cut out(R-404A/R-507)
CAUTION: Fans closest to the headers should not be Fan cycling controls should be adjusted to maintain a mini-
cycled on standard temperature or pressure mum of(5)minutes on and(5)minutes off.Short cycling of
controls.Dramatic temperature and pressure fans may result in a premature failure of
changes at the headers as a result of fan motor and/or fan blade.
action can result in possible tube failure.
Fan motors are designed for continuous Compressors operating below+10°F SST must have air
duty operation. flowing over the compressor at all times when the compres-
sor is running.
13
Copeland Demand Cooling for Discus L2 Models When Demand Cooling operates, it"diverts" refrigeration capacity
R-22,when used in a properly designed and controlled refrigeration in the form of injected saturated refrigerant from the evaporator to
system,is n realistic low temperature refrigerant alternative refrigeration
ration the compressor.The effect of this diversion on evaporator capacity is
which was phased out due t r its high ozone depletion potential. minimal because the diverted capacity is used to cool the gas entering
However,experience has shown R-22 can present problems as a low the compressor. the
the gas is cooled, h naturally becomes more
temperature refrigerant because under some conditions the internal dense,increasing the mass flowt diverted
f the compressor,which partly
compressor discharge temperature exceeds the safe temperature limit
compensates for the capacity diverted from the evaporator.
for longterm stabilityof refrigeration o i 1.For this reasonsuctionto liquid 1. Compressor Return Gas Temperature:Suction lines
heat exchangers are not recommended unless they are necessary to should be well insulated to reduce suction line heat gain.
prevent another potential problem. Return gas superheat should be as low as possible
consistent with safe compressor operation.Minimum 20°F
superheat at the compressor is required.
The Copeland Demand Cooling System 2, Condensing Temperatures:It is important when using
Copeland's demand cooling system uses modern electronicsto provide a R-22 as a low temperature refrigerant that condensing
rel ia ble,cost-effective solution tothis problem.Itis required for all single temperatures be minimized to reduce compression ratios
stage R-22 applications with saturated suctiontemperatures;below-1 0,17. and compressor discharge temperature.
The Demand Cooling module uses the signal of a discharge head 3. Suction Pressure: Evaporator design and system control
temperature sensorto monitor discharge gas temperature.If a critical settings should provide the maximum suction pressure
temperature is reached,the module energizesa long lifeinjection valve consistent with the application in order to have as low a
which meters a controlled amount of saturated refrigerant into the compression ratio as possible.
compressor suction cavity to cool the suction gas.Refer to Figure 13. In most cases, with floating head systems where condensing
This process controls the discharge temperature to a safe level. If,for temperatures are low during most of the year,Demand Cooling will
some reason,the discharge temperature risesabovea presetmaximum operate primarily as a compressor protection control much as the
level,the Demand Cooling modulewill turn thecompressoroff(requiring oil failure control protects the compressor during periods of low oil
a manual reset)and actuate its alarm contact.To minimize the amount pressure.Demand Cooling will beallowedto operate only during those
of refrigerant which must be injected,the suction gas cooling process periods when condensing temperatures and return gas temperatures
is performed after the gas has passed around and through the motor. are high or in periodswhere a system failure(such as an iced evaporator,
an expansion valve which does not control superheat, blocked
condenser,or a failed condenser fan)raises condensing temperatures
Operating Range orreturn gas temperatures to abnormally high levels or lowers suction
Demand Cooling is designed to protect the compressor from high pressure to abnormally low levels.
discharge temperatures over the evaporating and condensing
temperature ranges shown in Figure 12 at a maximum return gas
temperature of 65°F.
Demand Cooling System Design
Figure 12. Demand Cooling Injection Figure 13. Single Stage Internal Refrigerant Injection
LL 130
3
120 LTe
ssor
nsor
Q aEi100 `° Injection y
e 90 Re c Valve
y
d 80 The area above each return % o
c gas temperature line shows W
° 70 the approximate range of U
V Demand Cooling injections.
60_-40 -30 -20 -10 0
Evaporating Temperature(OF)
14
Head Pressure Control
Several types of head pressure control systems are available on Operation and Adjustment
condensing units: Condensing units with dual valves require sufficient charge to partially
A. Dual Valve System.(See section on operation flood the condenser during low ambient conditions.
and adjustment.)
B. Single Valve system.No adjustments are necessary. Valve adjustment should be made with gauges connected to the
(See section on operation.) discharge portof thecompressor.Adjustments should be made during
C. Ambient Fan Cycle Control.(See section on operation mild or low ambient condi Lions.Turning the valve stem"clockwise"on
and adjustment.) the ORI valve will increase the discharge pressure,while turning the
D. No Control. valve stem"counterclockwise"will decrease the discharge pressure.
If adjustments are made during warm ambient conditions,it may not be
possible to adjust the regulator valve as low as desired.Readjustment
A. Dual Valve System may be necessary once cooler conditions prevail.
The system employs an ORI(open on rise of inlet pressure)valve and
an ORD(open on rise of differential pressure)valve.The high pressure Figure 14. Dual Valve Piping Arrangement
discharge gas is introduced above the liquid in the receiver tank.The
receiver discharge is regulated by the ORI valve. Condenser ORI
The discharge pressure of the ORI valve must be adjusted to regulate
the unit for proper operating conditions.Adjust the ORI valve shown
on the following diagram to maintain a discharge pressure of 160 to ORD-4-20130
180 PSIG.
B. Single Valve System Compressor
Receiver ,
The standard valve used on high pressure refrigerant systems controls
the head pressure at approximately 180 PSIG.There is no adjustment Figure 15. Single Valve Flooding Valve Piping
for this valve.On low pressure refrigerant systems the valve controls
pressure atapproximately 100 PSIG.For energy efficiency,the 100 PSIG Arrangement
valve issometimes used on high pressure refrigerant systems.Whenthis
is done,refer to Table 1 on page 5 for expansion valve selections.
At condensing pressures above the valve setting,flow enters Port C Condenser
and leaves Port R.When the condensing pressure falls below the valve Head Pressure
setting,the valve modulates to permit discharge gas to enter Port D. Control Valve C
Metering dischargegas intothe refrigerantflow leaving the condenser R
produces a higher pressure at the condenser outlet,reduces the flow,
and causes the level of liquid refrigerant to rise in the condenser.
This"flooding"of the condenser with liquid refrigerant reduces the Compressor
available condensing surface, holding the condensing pressure at
the valve setting. Receiver
C. Ambient Fan Cycle Control
This is an automatic winter control method which will maintain a
condensing pressure within reasonable limits by cycling fan motors
in response to outside air temperature.The thermostat(s)should be Table 7. Ambient Fan Cycle Thermostat Settings
field adjusted to shut off the fan when the condensing temperature
is reduced to approximately 90'17.Table 7 lists approximate settings Design Thermostat Settings
for several system T.D's.These settings are approximate as they donot Models T.D. T1 T2 T3
take into account variations in load. 30 b
2-fan units: 25 65
20 70
4-fan units: 15 75
30 60 40
3-fan units: 25 65 55
CAUTION: Under no circumstance should all condenser 20 70 60
motors be allowed to cycle off on one control. 6-fan units: 15 75 65
At least one motor shall be wired to operate 30 60 50 30
at all times.Under most circumstances,the 8-fan units: 25 65 55 40
condenser motor nearest the inlet header 20 70 65 50
should remain on whenever the compressor 1 15 1 75 70 60
is operating. NOTE: Cycle pairs of fans on double wide units.
15
Refrigeration Oils* As received,the POE lubricant will be clear or straw colored.After use,
With the changes that have taken place in our industry dueto the CFC it may acquire a darker color.This does not indicate a problem as the
issue,we have reevaluated our lubricants to ensure compatibility with darker color merely reflects the activity of the lubricant's protective
the new HFC refrigerants and HCFC interim blends offered by several additive.
chemical producers.As a secondary criteria,it is also desirable that any Oil Level
new lubricant be compatible with the traditional refrigerants such as During Copeland's testing of Polyol ester oil, it was found that this
HCFC-22 or R502.This"backward compatibility"has been achieved lubricant exhibits a greater tendencyto introduce oil into the cylinder
with the introduction of the Polyol ester lubricants. during flooded start conditions.If allowed to continue,this condition
Table 8 below summarizes which oils/lubricants are approved for use will cause mechanical failure of the compressor.
in Copeland compressors: A crankcase heater is required with condensing units and it must be
Polyol Ester Lubricants turned on several hours before start-up.
Oil level must not exceed 1/4 sight glass.
Hygroscopicity
Ester lubricants (POE) have the characteristic of quickly absorbing �1
moisture from the ambient surroundings.This is shown graphically in Fiure16. Hygroscopicity
ICIt
Figure 16 where it can be seen that such lubricants absorb moisture g 1 9 p y
faster and in greater quantity than conventional mineral oils. Since 68 F, 50% Relative Humidity
moisture levels greaterthan 100 ppm will results in system corrosion -y
and ultimate failure,it is imperative that compressors,components, 'M 1.500 - _ - - • i -s-
containers and the entire system be kept sealed as much as possible. '+' •''�i'
Lubricants will be packaged in specially designed,sealed containers. J3
After opening,all the lubricant in a container should be used at once a
since it will readily absorb moisture if left exposed to the ambient. a 1,000
Any unused lubricant should be properly disposed of.Similarly,work
on systems and compressors must be carried out with the open time c
as short as possible.Leaving the system or compressor open during 500 !Win'_:`_ - I '" � � `~ �1~—•
breaks or overnight MUST BE AVOIDED!
Color o 0
0 50 100 150 200 250 300
Table 8. Refrigeration Oils Time, Hours
Interims HFC's
Traditional Refrigerants R401A,R401 B,R402A HFC-134a,
Refrigeration Oils HCFC-22 (MP-39,MP-66,HP-80) R404A,R507
POE's Mobil EAL ARCTIC 22 CC A A P
ICI(Virginia KMP)EMKARATE RL 32CF A A P
Suniso 3GS P PM
Mineral Texaco WF32 P PM NOT
Oils Calumet R015 (Witco) P PM ACCEPTABLE
Sontex 200-LT(White Oil) (BR&Scroll Only)
Witco LP-200 P
A/B Zerol 20OTD AM PM NOT
Soltex Type AB-200 PM ACCEPTABLE
P=Preferred Lubricant Choice A=Acceptable Alternative M=Mixture of Mineral Oil and Alkyl Benzene(AB)with minimum 50%AB.
*(Reprinted by permission from Copeland Corporation)
Mineral Oils
The BR and Scroll compressors use Sontex 200,a"white oil"This oil is interim blends and are compatiblewith mineral oils.Theycan therefore
notsuitablefor lowtem perature applications noris it available through be mixed with mineral oils when used in systems with CFC or HCFC
the normal refrigeration wholesalers.For field"top-off"the use of 3GS refrigerants when Copeland compressors are used.These lubricants
or equivalent,or Zerol 20OTD is permissible,as long as at least 50%of are compatible with one another and can be mixed.
the total oil charge remains Sontex 200.
Suniso 3GS,Texaco WF32 and Calumet R015(yellow oils)are available Alkyl Benzenes
through normal refrigeration wholesalers.These oils are compatible if Zerol 20OTD is an alkyl benzene(AB)lubricant.Copeland recommends
mixed and can be used on both high and low temperature systems. this lubricantfor use as a mixture with mineral oil(MO)when using the
interim blends such as R-401 A,R-401 B and R-402A(MP39,MP66 and
HP80).A minimum of 50%AB is required in these mixtures to assure
Polyol Ester Lubricants proper oil return.
The Mobil EALARCTIC22 CC isthe preferred Polyol esterdueto unique Shell MS 2212 is a 70/30 mixture of AB/MO.If this lubricant is used in a
additives included in thislubricant.ICI Emkarate RL32S isan acceptable retrofit situation virtually all of the existing MO must be drained prior
Polyol ester lubricant approved for use when Mobil is not available. to refilling with the MS 2212 to assure a minimum 50%AB content.
These POE's must be used if HFC refrigerants are used in the system.
Theyare also acceptablefor usewith anyofthetraditional refrigerantsor
16
Phase Loss Monitor
The combination phase sequence and loss monitor relay protects the a pressure tap should be installed in each
system against phase loss(single phasing),phase reversal(improper evaporator suction line in the proximity of the
sequence) and low voltage (brownout). When phase sequence is expansion valve bulb.
correct and full line voltage is present on all three phases,the relay is (f) When brazing refrigerant lines,an inert gas
energized as the normal condition indicator light glows. should be passed through the line at low
Note:If compressor fails to operate and the normal condition indicator Pressure to prevent scaling and oxidation inside
light on the phase monitor does not glow,then the supplied electrical the tubing.Dry nitrogen is preferred.
current is notin phasewith the monitor.This problem is easilycorrected (g) Use only a suitable silver solder alloy on suction
by the following steps: and liquid lines.
1. Turn power off at disconnect switch. (h) Limit the soldering paste or flux to the minimum
P required to prevent contamination of the solder
2. Swap any two of the three power input wires. joint internally.Flux only the male portion of the
3. Turn power on. Indicator light should glow and compressor connection,never the female. After brazing,
should start. remove excess flux.
4. Observe motors for correct rotation. (i) See Table 11 on page 23 for discharge and liquid
drain line sizes for remote condenser connections.
(j) If isolation valves are installed at the evaporator,
Recommended Refrigerant Piping Practices full port ball valves should be used.
The system as supplied by Heatcraft Refrigeration Products,was
thoroughly cleaned and dehydrated at the factory. Foreign matter Refrigerant Pipe Support
may enter the system by way of the evaporator to condensing unit 1. Normally,any straight run of tubing must be supported in at
piping.Therefore,care must be used during installation of the piping least two locations near each end of the run. Long
to prevent entrance of foreign matter. runs require additional supports.The refrigerant lines should
Install all refrigeration system components in accordance with be supported and fastened properly. As a guide,3/8 to 7/8
applicable local and national codes and in conformance with good should be supported every 5 feet;1-1/8 and 1-3/8
practice required for the proper operation of the system. every 7 feet;and 1-5/8 and 2-1/8 every 9 to 10
feet.
The refrigerant pipe size should be selected from the tables on pages 2. When changing directions in a run of tubing,no corner
23-29.The interconnecting pipe size is not necessarily the same size should be left unsupported.Supports should be placed a
as the stub-out on the condensing unit or the evaporator. maximum of 2 feet in each direction from the corner.
The following procedures should be followed: 3. Piping attached to a vibrating object(such as a compressor
(a) Do not leave dehydrated compressors or filter- or compressor base)must be supported in such a manner
that will not restrict the movement of the vibrating object.
driers on condensing units open to the atmosphere Rigid mounting will fatigue the copper tubing.
any longer than is absolutely necessary.
(b) Use only refrigeration grade copper tubing, 4. Do not use short radius ells.Short radius elbows have
properly sealed against contamination. points of excessive stress concentration and are subject to
(c) Suction lines should slope 1/4"per 10 feet breakage at these points.
towards the compressor. 5. Thoroughly inspect all piping after the equipment is
(d) Suitable P-type oil traps should be located at in operation and add supports wherever line vibration
the base of each suction riser of four(4)feet or more is significantly greater than most of the other piping.
to enhance oil return to the compressor. Extra supports are relatively inexpensive as compared to
(e) For desired method of superheat measurement, refrigerant loss.
Figure 17. Example of Pipe Support Figure 18. Condensing Unit/Compressor to Wall Support.
Clamp y I
Here
Support,, Gasket Factory
Clamp Clamp 10 x Pipe
Pipe/ Wall Factory Diameters
p Clamp
Compressor
'Incorrect" "Correct"
17
Suction Lines Suction Line Risers
Horizontal suction lines should slope awayfrom the evaporatortoward Prefabricated wrought coppertraps are available,or a trap can be made
the compressor at the rate of 1/4 inch per 10 feet for good oil return. by using two street ells and one regular ell.The suction trap must be
When multiple evaporators are connected in series using a common the same size as the suction line. For long vertical risers,additional
suction line,the branch suction lines mustenterthetopof the common traps may be necessary.Generally,one trap is recommended for each
suction line. length of pipe(approximately 20 feet)to insure proper oil movement.
See Figure 19 below for methods of constructing proper suction line
For dual or multiple evaporator systems,the branch lines to each P_traps.
evaporator should be sized for the evaporator capacity.The main
common line should be sized for the total system capacity. NOTE: A suction line trap must be installed at the
Suction lines that are outside of refrigerated space must be insulated. point where piping changes the direction of
See the Line Insulation section on page 31 for more information, refrigerant flow from any horizontal run to an
upward vertical run.
Figure 19. Suction P Traps.
REDUCE
HERE
Z;]a=U Slope 1/4" I
per 10 ft.
toward
"INCORRECT" compressor"CORRECT"
Figure 20.Double Suction Riser Construction
Sized for
Minimum
Sized for --- Load
Minimum Load SUCTION LINE fSUCTION LINE
TO COMPRESSOR COMPRESSOR
A B A B
EVAP. ;45'
D EVAP. RED Sized for
E Sized for TEE Full
Full{{ Load
. STIR. 90���R.
ELLS ELLS U-BEND OR
2 ELLS
METHOD A METHOD B
Liquid Lines
Liquid lines should be sized for a minimum pressure drop to prevent subcooling will depend on the design and size of the heat exchanger
"flashing"Flashing in the liquid lines would create additional pressure and on the operating suction and discharge pressures.An additional
drop and poor expansion valve operation.If a system requires long benefit from the use of the suction to liquid type heat exchanger
liquid lines from the receiver to the evaporator or if the liquid has to is that it can help raise the superheat in the suction line to prevent
rise vertically upward any distance,the losses should be calculated to liquid return to the compressor via the suction line.Generally,heat
determine whether or not a heat exchanger is required.The use of a exchangers are not recommended on R-22 low temperature systems.
suction to liquid heat exchanger may be used to subcool the liquid to However,they have proved necessary on short,well insulated suction
prevent flashing.This method of subcooling will normally provide no line runs to provide superheat at the compressor.
more than 20 F subcooling on high pressure systems.The amount of
18
Hot Gas Defrost Systems
Hot Gas Defrost systems can be described as reverse cycle,re- REVERSE CYCLE DEFROST PIPING
evap.,or alternating evaporator. Please see manual H-IM-HGD for
Mohave"systems.
Refrigerant Piping
Install all refrigerant components in accordance with applicable
local and national codes and in accordance with good practice
for proper system operation.The thermostatic expansion valve EVAP.COIL
must be the externally equalized type.It can be mounted inside
the unit end compartment.Mount the expansion valve bulb on
a horizontal run of suction line as close as possible to the suction
header.Use the clamps provided with the valve to fasten the bulb
securely so there is a tight line-to-line contact between the bulb
and the suction line.Suction and hot gas connections are made on TxV CHECK
VALVE
the outside of the unit.
Suction lines should be sloped towards the compressor at the rate CHECK VALVE
of one(1)inch per ten(10)feet for good oil return.Vertical risers :
of more than four(4)feet should be trapped at the bottom with PAN LOOP
a P trap.If a P-trap is used,the expansion valve bulb should be
installed between the unit and the trap. 1
Reverse Cycle System 1 LIQUID
LINE
The hot gas unit coolers can be used in reverse cycle hot gas _ HEAT_x 1 -
--
defrost systems using multiple evaporators connected to one
condensing unit.Generally,not more than one-third of the CHECK VALVE ,i SUCTION ~
system defrosts at one time. During the reverse cycle defrost,the LINE
reversing valve,located in the compressor discharge line,diverts
hot gas through the suction line to the evaporator.
See the piping view in the Reverse Cycle Defrost Piping diagram.
The suction line check valve directs the hot gas through the drain
pan loop which prevents condensate in the pan from freezing.
The hot gas exits the loop at the pan loop outlet header and
enters the evaporator through the check valve assembly.As the
hot gas defrosts the coil,heat is removed from the hot gas and
eventually it condenses into a liquid and exits the coil at the
distributor side port.The liquid then flows through the check valve
of the thermostatic expansion valve bypass assembly,around the
thermostatic expansion valve,and into the system liquid line.The
liquid refrigerant then feeds other evaporators on the cooling
cycle,evaporates,and returns to the compressor through their
suction lines.
Three Pipe System
The three pipe system(sometimes called re-evap.)uses three
pipes:one for liquid line,one for suction line,and one for hot gas
line.In addition,a re-evaporator accumulator is used at the suction
outlet of the evaporator.The hot gas is taken from the discharge
line between the compressor and the condenser,through a
hot gas solenoid valve,then to the evaporator drain pan circuit,
distributor tee,through the coil.See the Three-Pipe Defrost Piping
Diagram on p.20 for typical piping at the evaporator coil.
19
Alternating Evaporator System THREE-PIPE DEFROST PIPING
In the alternating evaporator hot gas defrost system,a third line is
taken off the compressor discharge line as the re-evap system. It
is piped with solenoids at each evaporator,so that hot gas defrost
is accomplished on one or more evaporators while the remaining
IMPORTANT: It is imperative that with the alternating EVAP.COIL
evaporator hot gas defrost system,no more that 25%of the
operating refrigeration load be in defrost at any time. (�
evaporators continue to function in a normal manner.The liquid from
defrosting evaporators is reintroduced to the main liquid line and it l CHECK
is necessary that 75%or greater capacity be retained in the normal Txv -VALVE
refrigeration cycle to offset the capacity that is being removed by the
units on the hot gas defrost. '
1 ------
PAN LOOP
Hot gas line sizes for R-22,R404A and R507
, ---- ------------ HOT GAS LINE
System Equivalent Discharge Length(Ft.) LIQUID LINE
- SUCTION LINE
Capacity BTU/Hr 25 50 75 100 150 ~
4,000 1/2 1/2 1/2 1/2 1/2
5,000 1/2 1/2 1/2 1/2 1/2
6,000 1/2 1/2 1/2 5/8 5/8
7,000 1/2 1/2 5/8 5/8 5/8
8,000 1/2 5/8 5/8 5/8 5/8
9,000 1/2 5/8 5/8 5/8 5/8
10,000 1/2 5/8 5/8 5/8 5/8
12,000 5/8 5/8 5/8 7/8 7/8
14,000 5/8 5/8 7/8 7/8 7/8
16,000 5/8 5/8 7/8 7/8 7/8
18,000 5/8 7/8 7/8 7/8 7/8
20,000 5/8 7/8 7/8 7/8 7/8
25,000 7/8 7/8 7/8 718 1 1/8
30,000 7/8 7/8 7/8 1 1/8 1 1/8
35,000 7/8 7/8 1 1/8 1 1/8 1 1/8
40,000 7/8 1 1/8 1 1/8 1 1/8 1 1/8
45,000 7/8 1 1/8 1 1/8 1 1/8 1 1/8
50,000 7/8 1 1/8 1 1/8 1 1/8 1 1/8
60,000 1 1/8 1 1/8 1 1/8 1 3/8 1 3/8
70,000 1 1/8 1 1/8 1 3/8 1 3/8 1 3/8
80,000 1 1/8 1 1/8 1 3/8 1 3/8 1 5/8
90,000 1 1/8 1 3/8 1 3/8 1 5/8 1 5/8
100,000 1 1/8 1 3/8 1 1 3/8 1 1 5/8 1 1 5/8
Note: Use next larger hot gas line size for-20°F. and lower sucton
temperatures.
20
Unit Cooler Piping
Pipe size example:
Given:-10°F Freezer with one system having(2)evaporators
• One condensing unit rated at 24,000 BTUH's @-20°F SST R404A
refrigerant.
• Two evaporators each rated at 12,000 BTUH's @ 10°F TD. ^
• 75 feet of actual line run between condensing unit to first f ;
evaporator and 20 feet of actual line run between the first
evaporator and the second evaporator(see figure below).
Line size 1
How to figure line sizes: Single condensing unit
1. Determine equivalent line run=actual run+valves and fitting
allowances. above two,
2. Use Line Sizing Tables on pages 22-29 to size lines. evaporators
3. Note any special considerations.
Two evaporators with
Line size 2 a vertical rise less
than 4 feet
Fittings in this system:
(6)90°elbows in main line plus a 90°turn through
i
a tee.
ru=U • (5)acidtional 90°elbows to first evaporator.
Eva .2
p Eva .1 •
P (4)additional 90°elbows to second evaporator.
Determine line size 1 (main line from Determine line size 2(evaporators):
condensing unit): 1. Line sizing to each evaporator is based on 12,000 BTUH's and
1. Main line from the condensing unit to be sized for the total equivalent run from condensing unit.First evaporator has an 80
capacity(balance)of the whole system of 24,000 BTUH's ft.run and the second evaporator has a 95 ft.run.
(Table 14 and 14A). 2. Table 14 indicates 7/8"suction for the first evaporator and Table
2. Refer to 24,000 @75 feet at-20°F SST R404A on the chart. 14A indicates 1 1/8"suction for the second evaporator.
You will find the suction line to be 1 1/8"and 1/2"liquid line. 3. Refer to Table 10.Each 7/8"90°elbow adds 2 equivalent feet of
3. Refer to Table 10.For every 1 1/8"90°elbow you must add pipe.Each 1 1/8"90°elbow adds 3 equivalent feet and a 90°turn
3 equivalent feet of pipe and 2 equivalent feet of pipe for each through a 1 1/8"tee adds 6 equivalent feet.
1 1/8"tee. 4. Actual line run(evap 1) 80 feet
Therefore,total equivalent line run= +(5)7/8"elbows @ 2' 10 feet
Actual line run 75 feet +(1)90°turn through tee @ 6' 6 feet
+(6)1 1/8"elbows @ 3' 18 feet Total equivalent line run 96 feet
+(1)1 1/8"tee @ 2' 2 feet
Total equivalent line run 95 feet Actual line run(evap 2) 95 feet
4. Refer to Table 14A. For 95 total equivalent feet, the suction +(4)1 1/8"elbows @ 3' 12 feet
line size should be 1 3/8"and the liquid line stays at 1/2"line.
Note:The gray shaded areas on Table 14. For 24,000 BTUH's, the Total equivalent line run 107 feet
maximum suction riser is1 1/8"toinsureproperoilreturnandpressure 5. Table 14A indicates 1 1/8"suction line and 3/8"liquid line from
drop from the bottom p-trap to the top p-trap. main line to both evaporators.
21
Table 9. Pressure Loss of Liquid Refrigerants in Liquid Line Risers(Expressed in Pressure Drop,PSIG,
and Subcooling Loss,'F).
Liquid Line Rise in Feet
10, 15' 20' 25' 30' 40' 50' 75' 100,
Refrigerant PSIG `F j PSIG -F PSIG -F PSIG °F PSIG -F PSIG -F PSIG -F PSIG `F PSIG °F
R22 4.8 1.6 1 7.3 2.3 9.7 3.1 12.1 3.8 14.5 4.7 19A 6.2 24.2 8.0 36.3 12.1 48.4 16.5
R134a 4.9 2.0 7.4 2.9 9.8 4.1 12.3 5.2 14.7 6.3 19.7 8.8 24.6 11.0 36.8 17.0 49.1 23.7
R507,R404A 4.1 1.1 6.1 1.6 8.2 2.1 10.2 2.7 12.2 3.3 16.3 4.1 20.4 5.6 30.6 8.3 40.8 11.8
Based on 11 OT liquid temperature at bottom of riser.
Table 10. Equivalent Feet of Pi a Due to Valve and Fitting Friction
Copper Tube,O.D.,Type'U 1/2 5/8 7/8 1 1-1/8 1-3/8 1-5/8 2-1/8 2-5/8 3-1/8 3-5/8 4-1/8 5-1/8 6-1/8
Globe Valve(Open) 14 16 22 28 36 42 57 69 83 99 118 138 168
Angle Valve(Open) 7 9 12 15 18 21 2$ 34 42 49 57 70 83
90'Turn Through Tee 3 4 5 6 8 9 12 14 1 17 20 22 28 34
Tee(Straight Through)
or Sweep Below .75 1 1.5 2 2.5 3 3.5 4 5 6 7 9 11
90`Elbow or Reducing
Tee(Straight Through) 1 2 2 3 4 4 5 7 8 10 12 14 16
22
)le 11. Recommended Remote Condenser Line Sizes
R-134a R-22 R507&R-404A
Liquid Line Liquid Line Liquid Line
Net Total Discharge Cond.to Discharge Cond.to Discharge Cond.to
Evaporator Equiv. Line Receiver Line Receiver Line Receiver
Capacity Length (O.D.) (O.D.) (O.D.) (O.D.) (O.D.) (O.D.)
3,000 50 3/8 3/8 3/8 3/8 3/8 3/8
100 3/8 3/8 3/8 3/8 3/8 3/8
6,000 50 1/2 3/8 3/8 3/8 1/2 3/8
100 1/2 3/8 1/2 3/8 1/2 3/8
9,000 50 1/2 3/8 1/2 3/8 1/2 3/8
100 5/8 3/8 1/2 3/8 1/2 3/8
12,000 50 5/8 3/8 1/2 3/8 1/2 3/8
100 5/8 1/2 5/8 3/8 5/8 1/2
18,000 50 5/8 1/2 5/8 3/8 5/8 1/2
100 7/8 1/2 5/8 3/8 7/8 1/2
24,000 50 7/8 1/2 5/8 3/8 5/8 1/2
100 7/8 1/2 7/8 1/2 7/8 5/8
36,000 50 7/8 1/2 7/8 1/2 7/8 5/8
100 1-1/8 5/8 7/8 5/8 7/8 7/8
48,000 50 7/8 5/8 7/8 5/8 7/8 5/8
100 1-1/8 7/8 7/8 718 1-1/8 7/8
60,000 50 1-1/8 5/8 7/8 5/8 7/8 7/8
100 1-1/8 7/8 1-1/8 7/8 1-1/8 7/8
72,000 50 1-1/8 7/8 7/8 7/8 1-1/8 7/8
100 1-3/8 7/8 1-1/8 7/8 1-1/8 1-1/8
90,000 50 1-1/8 7/8 1-1/8 7/8 1-1/8 7/8
100 1-3/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8
120,000 50 1-3/8 7/8 1-1/8 7/8 1-1/8 1-1/8
100 1-5/8 1-1/8 1-3/8 1-1/8 1-3/8 1-3/8
180,000 50 1-5/8 1-1/8 1-3/8 1-1/8 1-3/8 1-3/8
100 1-5/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8
240,000 50 1-5/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8
100 2-1/8 1-5/8 1-5/8 1-3/8 2-1/8 1-5/8
300,000 50 2-1/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8
100 2-1/8 1-5/8 2-1/8 1-5/8 2-1/8 2-1/8
360,000 50 2-1/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8
100 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8
480,000 50 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8
100 2-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8
600,000 50 2-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8
100 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8
720,000 50 2-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8
100 3-1/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8
840,000 50 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8
100 3-1/8 3-1/8 2-5/8 2-5/8 2-5/8 3-1/8
960,000 50 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8
100 3-1/8 3-1/8 2-5/8 3-1/8 3-1/8 3-5/8
1,080,000 50 3-1/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8
100 3-1/8 3-1/8 3-1/8 3-1/8 3-1/8 3-5/8
1,200,000 50 3-1/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8
100 3-5/8 3-5/8 3-1/8 3-1/8 3-5/8 4-1/8
1,440,000 50 3-1/8 3-1/8 2-5/8 3-1/8 3-1/8 3-5/8
100 3-5/8 3-5/8 3-1/8 3-5/8 3-5/8 4-1/8
1,680,000 50 3-5/8 3-1/8 3-1/8 3-1/8 3-1/8 3-5/8
100 4-1/8 4-1/8 3-5/8 3-5/8 1 3-5/8 4-1/8
Line Sizing
The following Ta bles 12 th rough 14A on pages 22 throug h 29 indicate When determining the refrigerant line length, be sure to add an
liquid lines and suction lines for all condensing units for R22,R404A, allowanceforfittings.SeeTable 10.Total equivalent length ofrefrigerant
R134a,and R507. lines is the sum of the actual linear footage and the allowance for
fittings.
23
Table 12. Recommended Line Sizes for R-134a*
SUCTION LINE SIZE
EMPERATURE
SYSTEM +40`F +30 F +20`F
CAPACITY Equivalent Lengths Equivalent Lengths Equivalent Lengths
BTU/H 25 1 5' Sv' i5'—� T00' i 5~ 5
1,000 3i8 318 31B 3/ 3/8 3M 's/8 3/ 3/8 i 318 1 /8
3,000 3/8 1/2 1/2 1/2 5/8 5/8 1/2 1/2 1/2 5/8 5/8 5/8 1/2 5/8 5/8 7/8 7/8 7/8
4,000 1/2 1/2 5/8 5/8 5/8 5/8 1/2 1/2 S18 5/8 5/8 7/8 5/8 5/8 7/8 7/8 7/8 7/8
6,000 1/2 5/8 5/8 5/8 7/8 7/8 1/2 SIB I 5/8 7/8 718 718 518 5/8 7/8 7/8 7/8 7/8
9,000 5/8 5/8 7/8 7/8 7/8 7/8 5/8 7/8 I 7/8 7/8 7/8 7/8 5/8 718 7/8 7/8 7/8 1-1/8
12,000 5/8 7/8 7/8 7/8 7/8 7/8 718 7/8 7/8 7/8 1-1/8 1-1/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8
15,000 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 7/8 7/8 1-118 1-1/8 1-1/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8
18,000 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8
24,000 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8
30,000 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 7/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8
36,000 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-1/8 1-1/8 1-3/8 1-3/8 1-SIB 1-5/8
42,000 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8
48,000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-5/S 1-5/8 1-5/8 1-5/8
54,000 1-1/8 1-1/8 1-3/8 1-3/8 1.5/8 1-5/8 1-1/8 1-3/8 1-3/8 11-5/8 1-5/8 1-5/8 1-1/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8
60,000 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8
66,000 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8
72,000 1-1/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 12-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8
78,000 1-1/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8
84,000 1-3/8 1-3/8 1-5/8 1 5/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8
90,000 1-3/8 1-3/8 1-5/8 1 5/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-3/8 1-5/8 1 2-1/8 2-1/8 2-1/8 2-1/8
120,000 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8
150,000 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8
180,000 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 1-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8
210,000 1-5/8 2-1/8 2-1/8 2-1/8 i 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-1/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8
240,000 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8
300,000 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 2-1/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8
360,000 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 2-5/8 3-1/8 3-5/8 3-5/8 4-118 4-1/8
480,000 2-5/8 2-5/8 3-1/8 3-18 3-1/8 3-5/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 3-5/8 3-1/8 3-5/8 3-5/8 4-1/8 5-1/8 5-1/8
600,000 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 3-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 3-1/8 3-5/8 4-1/8 4-1/8 5-1/8 5-1/8
*NOTES:
1.Sizes that are highlighted indicate maximum suction line sizes that should be used for risers. Riser size should not exceed horizontal size.
Properly placed suction traps must also be used for adequate oil return.
All sizes shown are for O.D.Type L copper tubing.
2. Suction line sizes selected at pressure drop equivalent to 2-F. Reduce estimate of system capacity accordingly.
3. Recommended liquid line size may increase with reverse cycle hot gas systems.
4. Consult factory for R-134a operation at winter conditions below 0°ambient.
Heated and insulated receiver required below 0°ambient.
If system load drops below 40%of design,consideration to installing double suction risers should be made.
24
Table 12A. Recommended Line Sizes for R-134a(continued)
SUCTION LINE SIZE LIQUID LINE SIZE
SUCTION TEMPERATURE Receiver to
+ Expansion Valve SYSTEM
Equivalent Lengths Equivalent Lengths Equivalent Lengths CAPACITY
2 r 5 75 10 So` 200` 15' 00 156 20 75 100 150 200' BTU/H
3/8 1/2 1/2 1/2 1/2 5/8 3/8 1/2 1/2 1/2 1/2 5/8 3/8 3/8 3/8 3/8 3/8 3/8 1,000
1/2 5/8 5/8 7/8 7/8 7/8 1/2 5/8 5/8 7/8 7/8 7/8 3/8 3/8 3/8 3/8 3/8 3/8 3,000
5/8 5/8 7/8 7/8 7/8 7/8 5/8 1 5/8 7/8 7/8 7/8 7/8 3/8 3/8 3/8 3/8 3/8 3/8 4,000
5/8 7/8 7/8 7/8 1-1/8 1-1/8 5/8 7/8 7/8 7/8 7/8 1-1/8 3/8 3/8 3/8 3/8 3/8 3/8 6,000
7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 3/8 3/8 3/8 3/8 3/8 1/2 9,000
7/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 3/8 3/8 3/8 3/8 1/2 1/2 12,000
7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 3/8 3/8 3/8 1/2 1/2 1/2 15,000
1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 3/8 3/8 1/2 1/2 1/2 1/2 18,000
1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 3/8 1/2 1/2 1/2 1/2 5/8 24,000
1-1/8 1-3/8 1-3/8 1-318 I 1-5/B 1-5/8 1-1/8 1-3/8 1-3/1 1-1/8 1-5/1 1-5/8 1/2 1/2 112 1/2 5/8 5/8 30,000
1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1/2 1/2 1/2 5/8 5/8 5/8 36,000
1-3/8 1-S/8 1-5/8 2-1/8 2-1/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1/2 1/2 5/8 5/8 5/8 5/8 42,000
1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-3/8 1-5/8 1-58 2-1/8 2-1/8 2-1/8 1/2 5/8 5/8 5/8 5/8 7/8 48,000
1-3/8 1-5/8 2-118 2-1/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 2-118 2-1/8 2-1/8 1/2 5/8 5/8 5/8 7/8 7/8 54,000
1-5/8 1-5/8 2-1/8' 2-1/8 2-1/8 2-1/8 1-3/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 5/8 5/8 5/8 5/8 7/8 7/8 60,000
1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 5/8 5/8 5/8 7/8 7/8 7/8 66,000
1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 5/8 5/8 7/8 7/8 7/8 718 72,000
1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 5/8 5/8 7/8 7/8 7/8 7/8 78,000
1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 5/8 7/8 7/8 7/8 7/8 7/8 84,000
1-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 5/8 7/8 7/8 7/8 7/8 7/8 90,000
2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 7/8 7/8 7/8 7/8 7/8 1-1/8 120,000
2-1/8 2-5/8 2-5/8 2-5/8 1 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 7/8 718 7/8 7/8 1-1/8 1-1/8 150,000
2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-1/8 718 7/8 7/8 1-1/8 1-1/8 1-1/8 180,000
2-5/8 2-5/8 3-118 3 1/8 3-5/8 3-5/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 210,000
2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 240,000
2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 300,000
2 5/8 3 1/8 3-5/8 3-5/8 4-1/8 4-1/8 2-5/8 3-1/8 3-5/8 3-5/8 4-1/8 4-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 360,000
3-1/B 3-5/8 3-5/8 4-1/8 5-1/8 5-1/8 3-1/8 3-5/8 3-5/8 4-1/8 5-1/8 5-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 480,000
3 1/8 3-5/8 4-1/8 5-1/8 5-1/8 5-1/8 3-1/8 3-5/8 4-1/8 4-1/8 5-1/8 5-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 600,000
*NOTES.
1. Sizes that are highlighted indicate maximum suction line sizes that should be used for risers. Riser size should not exceed horizontal size.
Properly placed suction traps must also be used for adequate oil return.
All sizes shown are for O.D.Type L copper tubing.
2. Suction line sizes selected at pressure drop equivalent to 2-F. Reduce estimate of system capacity accordingly.
3. Recommended liquid line size may increase with reverse cycle hot gas systems.
4. Consult factory for R-134a operation at winter conditions below 0°ambient.
Heated and insulated receiver required below 0°ambient.
If system load drops below 40%of design,consideration to installing double suction risers should be made.
25
Table 13. Recommended Line Sizes for R-22 *
SUCTION LINE SIZE
SUCTION TEMPERATURE
SYSTEM +40-F +20`F +10 F 0-F
CAPACITY Equivalent Lengths Equivalent Lengths Equivalent Lengths Equivalent
BTU/H 25' S0 75 100' 150' 200' 25 50' 75 100 150 200` 25' SW 75' 1100' 150 1200 25' 50' 75�
1,000 3/8 3/8 3/8 3/8 3/8 3/8 3/8 318 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/6 112 3/1 3/8 3/1
3,000 3/8 3/8 3/8 1/2 1/2 1/2 3/8 1/2 1/2 1/2 5/8 5/8 3/8 1/2 1/2 1/2 5/8 5/8 1/2 1 1/2 1/2
4,000 3/8 3/8 1/2 1/2 1/2 1/2 3/8 112 1/2 1/2 5/8 5/8 1/2 1/2 1/2 5/8 5/8 5/8 1/2 112 5/8
6,000 112 1/2 1/2 5/8 i 5/8 5/8 1/2 112 5/8 5/8 5/8 5/8 1/2 5/8 5/8 5/8 7/8 7/8 5/0 5/8 5/8
9,000 1/2 518 5/8 5/8 7/8 7/8 1/2 5/8 5/8 5/8 718 7/8 5/8 5/8 7/8 7/8 7/8 7/8 5/8 7/8 7/8
12,000 5/8 5/8 5/8 7/8 7/8 7/6 1 5/8 5/8 7/8 7/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 5/8 7/8 7/8
15,000 5/8 5/8 718 7/8 7/8 7/8 5/8 718 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 7/8 7/8
18,000 5/8 716 7/8 7/8 7/8 1-1/8 5/8 7/8 7/8 7/8 7/8 1-1/8 7/8 7/8 7/8 718 1-1/8 1-1/8 7/8 7/8 1-1/8
24,000 5/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 718 7/8 7/8 1-1/8 1-1/8 7/8 7/8 11-1/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8
30,000 718 7/8 7/8 1-118 1-1/8 1-1/8 7/6 7/8 7/8 1-18 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-318 7/1 1-118 1-1/1
36,000 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1 1-3/8 1-3/8 1-1/8 1-1/8 1-1/8
42,000 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8
48,000 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-3/8
54,000 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8
60,000 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/6 1-5/8 1-1/8 1-3/8 1-3/6
66,000 7/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-5/8
72,000 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1
/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-3/8 1-5/8
78,000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-518 1-5/8 1-1/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8
84,000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 2-118 1-3/8 1-5/8 1-5/8
90,000 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8
120,000 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/6 1-5/8 2-1/8
150,000 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8 2-5/8 1-5/8 2-1/8 2-1/8
180,000 1-3/8 1-5/8 1-5/8 2-118 2-1/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 1-5/8 2-1/8 2-1/8
210,000 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-1/8 2-1/8
240,000 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-S/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8
300,000 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-1/8 2-5/8 2-5/8
360,000 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-118 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8
480,000 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-1/8 2-5/8 2-5/8 2-5/6 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-518 2-5/8 2-5/8 3-1/8
600,000 1 2-1/8 2-5/8 f 2-5/8 2-5/8 3-1/8 3-1/8 2-1/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 2-5/8 3-1/8 3-1/8
•NOTES:
1.Sizes that are highlighted Indicate maximum suction line sizes that should be used for risers. Riser size should not exceed horizontal size.
Properly placed suction traps must also be used for adequate oil return.
All sizes shown are for O.D.Type L copper tubing.
2.Suction line sizes selected at pressure drop equivalent to 2'F. Reduce estimate of system capacity accordingly.
3.Recommended liquid line size may increase with reverse cycle hot gas systems.
4.If system load drops below 40%of design,consideration to installing double suction risers should be made.
26
Table 13A. Recommended Line Sizes for R-22(continued)
SUCTION LINE SIZE LIQUID LINE SIZE
SUCTION TEMPERATURE Receiver to
07 -10 F 20 Expansion Valve SYSTEM
Lengths Equivalent Lengths Equivalent Lengths Equivalent Lengths CAPACITY
100' 150 1200 25 SO 75 100' 11SO I 200 25' 50 75 100 1SW 200' 25' 50 75 11OW1 150' 1 20W BTU/H
3/8 1/2 1/2 3/8 I 3/8 3/8 3/8 1/2 1/2 3/8 3/8 3/8 1/2 1/2 1/2 3/8 3/8 3/8 3/8 3/8 3/8 1,000
5/8 5/8 5/8 1/2 1/2 1/2 5/8 5/8 5/8 1/2 1/2 5/8 5/8 5/8 7/8 3/8 3/8 3/8 3/8 3/8 3/8 3,000
5/8 5/8 7/8 1/2 1/2 5/8 5/8 5/8 7/8 1/2 5/8 5/8 5/8 718 7/8 3/8 3/8 3/8 3/8 3/8 3/8 4,000
5/8 7/8 7/8 1/2 SIB 5/8 7/8 7/8 7/8 5/8 5/8 7/8 7/8 7/8 7/8 3/8 3/8 3/8 3/8 3/8 3/8 6,000
7/8 718 7/8 5/8 7/8 718 7/8 7/8 7/8 5/8 7/8 7/8 7/8 1-1/8 1-1/8 3/8 3/8 3/8 3/8 3/8 3/8 9,000
7/8 7/8 1-1/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 3/8 3/8 3/8 1 3/8 3/8 3/8 12,000
7/8 1-1/8 1-1/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 3/8 3/8 3/8 3/8 3/8 1/2 15,000
1-1/8 1-1/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 3/8 3/8 3/8 3/8 1/2 1/2 18,000
1-1/8 1-1/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1 3/8 7/8 1-1/8 1-1/8 1 1-3/8 1-3/8 1-3/8 3/8 3/8 1/2 1/2 1/2 1/2 24,000
1-1/8 1-3/8 1-3/8 7/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 3/8 3/8 1/2 1/2 1/2 1/2 30,000
1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 3/8 1/2 1/2 1/2 1/2 1/2 36,000
1-3/8 1-3/8 1-5/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 3/8 1/2 1/2 1/2 1/2 5/8 42,000
1-3/6 1 5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1/2 1/2 1/2 1/2 112 5/8 48,000
1-3/8 1-5/8 1 5/8 1-1/8 1 3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-3/8 1-5/8 1 5/8 2-1/8 2-1/8 1/2 1/2 1/2 1/2 5/8 5/8 54,000
1-5/8 1-5/8 2-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8 1 1-5/8 2-1/8 2-1/8 1/2 1/2 1/2 5/8 5/8 5/8 60,000
1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8 1/2 1/2 5/8 5/8 5/8 5/8 66,000
1-5/8' 2-1/8 2-1/8 1-3/8 1-3/8 1-5/8 1-S/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1/2 1/2 5/8 5/8 5/8 5/8 72,000
1-5/8�2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 1-5/8 2-118 2-1/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1/2 1/2 5/8 5/8 5/8 7/8 78,000
1-5/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 1/2 5/8 5/8 5/8 5/8 7/8 84,000
2-1/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-3/8 1-5/8 2-1/8 1 2-1/8 2-1/8 2-1/8 1/2 5/8 5/8 5/8 7/8 7/8 90,000
2-1/8 2-1/8 2-1/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 5/8 5/8 5/8 7/8 7/8 7/8 120,000
2-1/8 2-5/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 5/8 7/8 7/8 7/8 7/8 7/8 150,000
2-1/8 2-5/8 2-5/8 1-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 5/8 7/8 7/8 7/8 7/8 1-1/8 180,000
2-5/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 7/8 7/8 7/8 7/8 7/8 1-1/8 210,000
2-5/8 2-5/8 3-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 240,000
2 S/8 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 2-1/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 300,000
3-1/8 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 7/8 7/8 1-18 1-1/8 1-1/8 1-1/8 360,000
3-1/8 3-5/8 3-5/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 3-5/8 2-5/8 3-1/8 3-5/8 3-5/8 3-5/8 4-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 480,000
3-5/8 3-5/8 4-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 4-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 600,000
NOTES
1. Sizes that are highlighted indicate maximum suction line sizes that should be used for risers. Riser size should not exceed horizontal size.
Properly placed suction traps must also be used for adequate oil return.
All sizes shown are for O.D.Type L copper tubing.
2. Suction line sizes selected at pressure drop equivalent to 2`F. Reduce estimate of system capacity accordingly.
3. Recommended liquid line size may increase with reverse cycle hot gas systems.
4.If system load drops below 40%ofdesign,consideration to installing double suction risers should be made.
27
Table 14. Recommended Line Sizes for R-404A and R507 *
SUCTION LINE SIZE
SUCTION TEMPERATURE
SYSTEM +207 +10T -10-F -20-F
CAPACITY Equivalent Lengths Equivalent Lengths Equivalent Lengths Equivalent
BTU/H 25' 50' 75 100' 150 200' 25' 50' 75 100 ISO' 200' 25' S0' 75' 100' 150' 200' 25 50' 751
1,000 3/8 3/8 3/8 3/8 3/8 3/8 318 3/8 3/8 3/8 3/8 1/2 3/8 3/8 3/8 1/2 1/2 1/2 3/8 3/8 1/2
3,000 3/8 3/8 1/2 1/2 1/2 5/8 3/8 1/2 1/2 1/2 5/8 5/8 1/2 1/2 5/8 5/8 5/8 7/8 112 1/2 5/8
4,000 3/8 112 1/2 1/2 5/8 5/8 112 112 1/2 5/8 5/8 7/8 1/2 5/8 5/8 5/8 7/8 7/8 1/2 5/8 5/8
6,000 1/2 1/2 5/8 5/8 7/8 7/8 112 1/2 5/8 5/8 7/8 7/8 112 5/8 5/8 7/8 7/8 7/8 518 5/8 7/8
9,000 5/8 5/8 7/8 7/8 7/8 7/8 518 5/8 7/8 7/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 1-1/8 5/8 7/8 7/8
12,000 5/8 7/8 7/8 7/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 1-1/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 7/8 7/8
15,000 5/8 7/8 7/8 7/8 7/8 1-1/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 718 7/8 7/8 1-1/8 1-1/8 1-1/8 718 7/8 1-1/8
18,000 718 7/8 7/8 7/8 1-1/8 1-1/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 7/8 1-1/8 1-1/8
24,000 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-1/8 1-1/8
30,000 7/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-1/8
36,000 7/8 1-118 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-1/8 1-1/8 1-3/8
42,000 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3, 1 5/8 1-5/8 1-1/8 1-3/8 1-3/8
48,000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8
54,000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-3/8 1-5/8
60,000 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8
66,000 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8
72,000 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-1/8 1-3/8 1-5/8 1-5/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 1-5/8 1-5/8 1-3/81 1-5/8 1-5/8
78,000 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8 1-5/8 1-5/8
84,000 1-1/8 1-3/8 1-5/8 1-5/8 1-S/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 1-5/8 1-5/8
90,000 1-3/8 1-3/8 1-5/8 1-S/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8 2-5/8 1-5/8 1-5/8 2-1/8
120,000 1-3/8 1-5/8 1-5/81 2-1/8 2-1/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2 5/8 2-5/8 1-5/8 2-1/8 2-1/8
150,000 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-1/8 2-1/8
180,000 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-1/8 2-1/8 2-5/8
210,000 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8
240,000 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-118 2-S/8 2-5/8 2-5/8 2-5/8 2-118 2-5/3 2-5/8 2-5/8 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8
300,000 2-1/8 2-1/8 2-518 2-5/8 2-5/8 3-1/8 2-1/8 2-5/8i 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 2-5/8 2-5/8 2-5/8
360,000 2-1/8 2-1/8 2-518 2-5/8 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 2 5/8 2-5/8 3-118
480,000 2-1/8 2-5/8 2-5/8. 3-1/8 3-1/8 3-5/8 2-5/8 2-5/8 2-5/8 2-5/8 3-5/8 3-5/8 2-5/8 3-1/8 3-1/8 3-S18 3-5/8 41/8 2-5/8 3-1/8 3-1/8
600,000 2-5/8 2-5/8 3 1/8 3 1/6 3-5/8 3-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 3-1/8 3-1/8 3-1/8 3-5/e 4-1/8 4-1/6 3-1/8 3-1/8 3-1/8
*NOTES:
1. Sizes that are highlighted indicate maximum suction line sizes that should be used for risers. Riser size should not exceed horizontal size.
Properly placed suction traps must also be used for adequate oil return.
All sizes shown are for O.D.Type L copper tubing.
2. Suction line sizes selected at pressure drop equivalent to 2-F. Reduce estimate of system capacity accordingly.
3. Recommended liquid line size may increase with reverse cycle hot gas systems.
4. If system load drops below 40%of design,consideration to installing double suction risers should be made.
28
Table 14A. Recommended Line Sizes for R-404A and R507 continued
SUCTION LINE SIZE LIQUID LINE SIZE
SUCTION TEMPERATURE Receiver to
-20'F -30'F -40'F Expansion Valve SYSTEM
Lengths Equivalent Lengths Equivalent Lengths Equivalent Lengths CAPACITY
100' 150' 200' 25' 50' 1 75' 100' 150' 200' 25' 1 S0' 1 75' 100' 150' 200' 25' 50' 75' 100' 150' 200' BTU/H
1/2 1/2 1/2 3/8 I 3/8 112 1/2 1/2 5/8 3/8 112 1/2 1/2 5/8 5/8 3/8 3/8 3/8 3/8 3/8 3/8 1,000
5/8 7/8 7/8 112 1/2 5/8 5/8 7/8 7/8 1/2 1/2 5/8 5/8 7/8 7/8 3/8 3/8 3/8 3/8 3/8 3/8 3,000
7/8 7/8 7/8 5/8 5/8 5/8 7/8 7/8 7/8 1/2 5/8 5/8 7/8 7/8 7/8 3/8 3/8 3/8 3/8 3/8 3/8 4,000
7/8 7/8 7/8 5/8 5/8 7/8 7/8 7/8 7/8 5/8 5/8 718 7/8 718 1-1/8 3/8 3/8 3/8 3/8 3/8 3/8 6,000
7/8 1-1/8 1-1/8 5/8 7/8 7/8 7/8 1-1/8 1-1/8 5/8 7/8 7/8 7/8 1-1/8 1-1/8 3/8 3/8 3/8 3/8 3/8 3/8 9,000
1-1/8 1-1/8 1-1/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 3/8 3/8 3/8 3/8 3/8 1/2 12,000
1-1/8 1-1/8 1-3/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 3/8 3/8 3/8 3/8 1/2 1/2 15,000
1-1/8 1-3/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 3/8 3/8 3/8 1/2 1/2 1/2 18,000
1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-1/8 1-318 1-3/8 1-3/8 1-1/8 1-1/8 1-1/8 1-318 1-3/8 1-3/8 3/8 3/8 1/2 1/2 1/2 1/2 24,000
1-3/8 1-3/8 1-5/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 3/8 1/2 1/2 1/2 1/2 1/2 30,000
1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1/2 1/2 112 112 1/2 5/8 36,000
1-5/8 11-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1/2 1/2 1/2 1/2 5/8 5/8 42,000
1-5/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1/2 1/2 1/2 5/8 5/8 5/8 48,000
1-5/8 1-5/8 1-5/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1/2 1/2 1/2 5/8 5/8 5/8 54,000
1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 112 1/2 1 5/8 5/8 5/8 5/8 60,000
1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 1-5/8 1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 1-5/8 1-5/8 1-5/8 2-1/8 1/2 1/2 5/8 5/8 5/8 5/8 66,000
1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 11-5/8 1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 1-5/8 1-5/8 1-5/8 2-1/8 1/2 5/8 5/8 5/8 5/8 5/8 72,000
1-5/8 2-1/8 2-1/8 1-5/8 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8 5/8 5/8 5/8 5/8 5/8 7/8 78,000
2-1/8 2-1/8 2-1/8 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 1-5/8 1-5/8 2-118 2-1/8 2-1/8 5/8 5/8 5/8 5/8 7/8 7/8 84,000
2-1/8 2-1/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 5/8 5/8 5/8 7/8 7/8 718 90,000
2-1/8 2-5/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 5/8 5/8 7/8 718 7/8 7/8 120,000
2-5/8 2-5/8 2-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 5/8 7/8 7/8 7/8 7/8 1-1/8 150,000
2-5/8 2-5/8 3-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 180,000
2-5/8 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 210,000
2-5/8 3-1/8 3-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 240,000
3-1/8 3-5/8 3-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 4-1/8 2-5/8 2-5/8 3-1/8 3-5/8 3-5/8 4-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 300,000
3-5/8 3-5/8 4-1/8 2-5/8 3-1/8 3-1/8 3-S/8 3-5/8 4-1/8 2-5/8 3-1/8 3-5/8 3-5/8 4-1/8 4-1/8 -1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 360,000
3-5/8 3-5/8 4-1/8 3-1/8 3-5/8 3-5/8 4-1/8 4-1/8 4-1/8 3-1/8 3-5/8 3-5/8 '4-1/8 4-1/8 4-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 480,000
3-5/8 1 3-5/8 1 4-1/8, 3-1/8 3-5/8 3-5/8 4-1/8 1 4-1/8 1 5-1/8 3-1/8 1 3-5/8 1 3-5/8 1 4-1/8 1 4-1/8 5-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 600,000
*NOTES:
1. Sizes that are highlighted indicate maximum suction line sizes that should be used for risers. Riser size should not exceed horizontal size.
Properly placed suction traps must also be used for adequate oil return.
All sizes shown are for O.D.Type L copper tubing.
2. Suction line sizes selected at pressure drop equivalent to 2'F. Reduce estimate of system capacity accordingly.
3. Recommended liquid line size may increase with reverse cycle hot gas systems.
4. If system load drops below 40%of design,consideration to installing double suction risers should be made.
29
Table 15. Weight of Refrigerants in Copper Lines During Operation (Pounds per 100 lineal feet of type"L"tubing).
Line Size 1 Suction Line at Suction Temperature
O.D. Liquid Hot Gas
in Inches Refrigerant Line Line -40'F -20"F 0'F +20'F +40°F
134a 4.0 .15 .01 .01 .02 .04 .06
3/8 22 3.9 .22 .02 .03 .04 .06 .08
R507,404A 3.4 .31 .03 .04 _ .06 .09 .13
134a 7.4 .30 .01 .03 .04 .07 .11
1/2 22 7.4 .41 .03 .05 .07 .11 .15
R507,404A 6.4 .58 .04 .07 .13 .16 .24
134a 11.9 .47 .02 .05 .07 .12 .17
5/8 22 11.8 .65 .05 .08 .12 .17 .25
R507,404A 10.3 .93 .07 .11 .17 .25 .35
134a 24.7 .99 .05 .10 .15 .24 .36
7/8 22 24A 1.35 .10 .16 .24 .36 .51
R507,404A 21.2 1.92 .15 .23 .37 .51 .72
134a 42.2 1.70 .08 .17 .26 Al .60
1-1/8 22 41.6 2.30 .17 .28 .42 .61 .87
R507,404A 36.1 3.27 .26 .39 .63 .86 1.24
134a 64.2 2.57 .14 .26 .40 .61 1.91
1-3/8 22 63.5 3.50 .27 .42 .64 .93 1.33
R507,404A 55.0 4.98 .40 .58 .95 1.32 1.87
134a 90.9 3.65 .20 .37 -.57 .87 1.30
1-5/8 22 90.0 4.96 .37 .59 .90 1.33 1.88
R507,404A 78.0 7.07 .56 .82 1.35 1.86 2.64
134a 158 6.34 .34 .64 .98 1.51 2.24
2-1/8 22 156 8.61 .65 1.03 1.57 2.30 3.26
R507,404A 134 12.25 .98 1.43 2.35 3.23 4.58
134a 244 9.78 .52 .99 1.51 2.32 3.47
2-5/8 22 241 13.70 1.01 1.59 2.42 3.54 5.03
R507,404A 209 18.92 1.51 2.21 3.62 5.00 7.07
134a 348 13.97 .75 1.41 2.16 3.31 4.96
3-1/8 22 344 18.95 1.44 2.28 3.45 5.05 7.18
R507,404A 298 27.05 2.16 3.15 5.17 7.14 9.95
134a 471 18.90 .99 1.91 2.92 4.48 6.69
3-5/8 22 465 25.60 1.94 3.08 4.67 6.83 9.74
R507,404A 403 36.50 2.92 4.25 6.97 19.65 13.67
134a 612 24.56 1.29 2.49 3.81 5.84 8.75
4-1/8 22 605 33.40 2.53 4.01 6.08 8.90 12.70
R507,404A 526 47.57 3.80 5.55 9.09 12.58 17.80
30
City&Tower Water Connections LeakTesting
In the refrigeration industry"City"and"Tower"are designations of Afterall lines are connected,the entire system mustbeleaktested.The
temperature and flow conditions, not applications. The term"City" complete system should bepressurizedtonotmorethan 150psigwith
refers to operating conditions where incoming water is 75°F, and refrigerantand dry nitrogen(ordryCO_).The use ofanelectronictype
condensing temperature is105°F."Tower"referstoahighertemperature leak detector is highly recommended because of its greater sensitivityto
relationship which is normally 857, incoming water and 105'F small leaks.As a further check it is recommended that this pressure be
condensing temperature. held fora minimum of 12 hours and then rechecked.Fora satisfactory
Water circuits in some condenser models provide a center,or Tower, installation,the system must be leaktight.
outlet connection to allow divided inlet water flow.This extra water
port reduces watervelocity,water pressure drop,and condenser wear
in applications such as cooling towers where higher inlettemperatures Line Insulation
and water flows occur. After the final leak test, refrigerant lines exposed to high ambient
Water Connections for City conditions should be insulated to reduce heat pickup and preventthe
ForCitywater(opensystem) Figure 21. Water Connections formation of flash gas in the liquid lines.Suction lines must always be
high pressure applications, insulated with 3/4"wall Armstrong"Armaflex"or equal.When required,
the Tower connections is OUT PLUG OUT Liquid lines should be insulated with 1/2 inch wall insulation or better.
The insulation located in outdoor environments should be protected
plugged. from UV exposure to prevent deterioration of insulating value.
Water Connections
for Tower IN PLUG
IN Evacuation
For Tower usage and low
pressure applications,both
normal water connections IN
will be used as inlets and CAUTION: Do not use the refrigeration compressor
the tower connection as to evacuate the system. Do not start the
an outlet. OUT compressor while it is in a vacuum.
Evacuation and Leak Detection A good,deep vacuum pump should be connected to both the low and
Due to the smaller molecule size of HFC's,they will tend to leak more high side evacuation valves with copper tube or high vacuum hoses
readily than CFCs. Consequently, it is the utmost importance (1/4"ID minimum). If the compressor has service valves,they should
that proper system evacuation and leak detection procedures be remain closed.A deep vacuum gauge capable registering pressure
employed. in microns should be attached to the system forr pressure readings.
A shut off valve between the gauge connection and vacuum pump
Copeland recommends a minimum evacuation to 500 microns. In should be provided to allow the system pressure to be checked after
addition,a vacuum decaytestisstrongly recommended to assure there evacuation. Do not turn off vacuum pump when connected to an
is not a large pressure differential between the system and vacuum evacuated system before closing shut off valve.
pump.Good evacuation processes include frequent vacuum pump oil
changes and large diameter,short hose connections to both high and Thevacuum pumpshould beoperated until a pressureof 1,500microns
low sides of the system preferably using bronze braided hose. absolute pressure is reached—at which time the vacuum should be
Leak detection can be carried out in the conventional manner. broken with the refrigerant to be used in the system through a drier
If HCFC or CFC tracer gas is used,care must be taken to completely
until the system pressure rises above"0"psig.
remove all traces of the gas prior to introducing HFC's.
Electronic leak detectors are now available that will sense HFC's.This NOTE: Refrigerant used during evacuation cannot
is considered preferable since it removes the possibility of chlorine be vented. Reclaim all used refrigerant.
remaining in the system after leak testing with HCFC's and/or CFCs. EPA regulations are constantly being
There is a view that even small quantities of chlorine may act as a updated to ensure your procedure follows
catalyst encouraging copper plating and/or corrosion and should correct regulations.
therefore be avoided.
WARNING: HFC-134a has been shown to be Repeat this operation a second time.
combustible at pressure as low as 5.5 psig Open the compressor service valves and evacuate the entire system
(at 350*Fcentr when mixed with air at to 500 microns absolute pressure. Raise the pressure to 2 psig with
concentrations more than 60%air p p p g
by volume. the refrigerant and remove the vacuum pump.
At lower temperature,higher pressures are
required to support combustion.Therefore,
air should never be mixed with HFC-134a
for leak detection.
Within the lastseveral years,manufacturers have developed fluorescent
dye leak detection systems for use with refrigerants. These dyes mix
with the lubricant and,when exposed to an ultraviolet light"fluoresce;'
indicates the location of leaks. Copeland has tested and approved
the Rigid"System Safe"dye and found it to be compatible with the
compressor materials in systems.
31
Refrigerant Charging Instructions Check Out and Start Up
1. Install a liquid line drier in the refrigerant supply line between Afterthe installation has been completed,the following points should
the service gauge and the liquid service port of the receiver.This be covered before the system is placed in operation:
extra drier will insure that all refrigerant supplied to the system is (a) Check all electrical and refrigerant connections.
clean and dry. Be sure they are all tight.
2. When initially charging a system that is in a vacuum, liquid (b) Observe compressor oil level before start-up.The
refrigerant can be added directly into the receiver tank. oil level should be at or slightly above the 1/4 level
of the sight glass.Refer to Table 8 on page 16 for
3. Check equipment catalog for refrigerant capacity. System proper compressor oil.
refrigerant capacity is 90%of receiver capacity.Do not add more (c) Remove upper mounting nuts on the compressor
refrigerant than the data tag indicates,unlessthe line run exceeds feet.Remove the shipping spacers.Install the
25ft.Then,add additional refrigerant as perthe chart on page 30. neoprene washers onto the compressor feet.
Weigh the refrigerant drum before charging so an accurate record Replace the upper mounting nuts and washers,
can be kept of the weight of refrigerant put in the system. allowing 1/16"space between the mounting nut and
the neoprene spacer.
4. Startthe system and finish charging until the sight glass indicates (d) Check high and low pressure controls,pressure
a full charge and the proper amount has been weighed in.If the regulating valves,oil pressure safety controls,and
refrigerant must be added to the system through the suction all other safety controls,and adjust if necessary.
sideofthe compressor,charge in vaporform only.Liquid charging (e) Check the room thermostat for normal operation
must be done in the high side only or with liquid metering devices and adjust.
to protect the compressor. (f) Wiring diagrams,instruction bulletins,etc.attached
to the condensing units should be read and filed for
future reference.
Low Head Pressure Systems
(g) All fan motors on air cooled condensers,
If you are charging the system byusing a clear sight glass as an indication evaporators,etc.should be checked for proper
of proper charge the following must be considered. rotation.Fan motor mounts should be carefully
Checkthe condensing temperature.ItmustbeaboveI05"F.If not,itwill (h Electricked for tightness asevapond etorfan alignment.
be necessary to reduce the amount of air going through the condenser (h) betempndhotgae for
rcoatinuous motors should
from fansstill running.Simplyreducethe effective condenser face area the room
as stabilized.t operation until
to raise the discharge pressure above the equivalent I05°Fcondensing Observe system
pressures
during
temperatureand then proceedto chargeto clearthe sightglass.Adjust in Observe system pressures during charging and
evaporator superheat at this time.Return to full condenser face area initial operation.Do not add oil while the system is
and allow the system to balance. short of refrigerant unless oil level is dangerously low.
(j) Continue charging until system has sufficient
refrigerant for proper operation.Do not overcharge.
Remember that bubbles in a sight glass may be
Field Wiring caused by a restriction as well as a shortage of
refrigerant.
(k) Do not leave unit unattended until the system has
WARNING: All wiring must be done in accordance with reached normal operating conditions and the oil
applicable codes and local ordinances. charge has been properly adjusted to maintain the oil
level between 1/4 and bottom of the sight glass.
The field wiring should enter the areas as provided on the unit. The (1) Make sure all Schrader valve caps are in place and
wiring diagram for each unit is located on the inside of the electrical tight
panel door. All field wiring should be done in a professional manner
and in accordance with all governing codes. Before operating unit, CAUTION:Extreme care must be taken in starting
double check all wiring connections,including the factory terminals. compressors for the first time after system
Factory connections can vibrate loose during shipment. charging. At this time,all of the oil and most
1. The serial data tag on the unit is marked with the electrical of the refrigerant might be in the compressor
characteristic for wiring the unit. creating a condition which could cause
2. Consult the wiring diagram in the unit cooler and in the con- compressor damage due to slugging.
densing unit for proper connections. Activating the crankcase heater for 24 hours
3. Wire type should be of copper conductor only and of the prior to start-up is required. If no crankcase
proper size to handle the connected load. heater is present,then directing a 500 watt
4. The unit must be grounded. heat lamp or other safe heat source on the
5. For multiple evaporator systems,the defrost termination lower shell of the compressor for approximately
controls should be wired in series.Follow the wiring diagrams thirty minutes will be beneficial in eliminating
for multiple evaporator systems carefully.This will assure com- this condition which might never reoccur.
plete defrost of all evaporators in the system. WARNING:Scroll compressor is directional
6. Multiple evaporator systems should operate off of one thermo- dependent.If noisy,change phase of input
stat. wiring.
7. If a remote defrost timer is to be used,the timer should be
located outside the refrigerated space.
8. For air cooled condensers,due to multiple low amp motors,we
recommend using time delay fuse protection instead of circuit
breakers.
32
Operational Check Out System Balancing-Compressor Superheat
After the system has been charged and has operated for at least IMPORTANT: In orderto obtain the maximum capacityfrom
two hours at normal operating conditions without any indication of a system,and to ensure trouble-free opera-
malfunction,it should be allowed to operate overnight on automatic tion,it is necessaryto balanceeach and every
controls. Then a thorough recheck of the entire system operation system.
should be made as follows:
(a) Check compressor discharge and suction pressures. This is extremely important with any refrigeration system.
If not within system design limits,determine why The critical value which must be checked is suction superheat.
and take corrective action.
(b) Check liquid line sight glass and expansion valve Suction superheat should be checked at the compressor as
operation. If there are indications that more follows:
refrigerant is required,leak test all connections and 1. Measure the suction pressure at the suction service
system components and repair any leaks before valve of the compressor and determine the saturation
adding refrigerant. temperature corresponding to this pressure from a
(c) Observe oil level in compressor crankcase sight "Temperature-Pressure"chart.
glass. Add oil as necessary to bring level to bottom 2. Measure the suction temperature of the suction line
1/4 of the sight glass. about one foot back from the compressor using an
(d) Thermostatic expansion valves must be checked accurate thermometer.
for proper superheat settings.Feeler bulbs must be 3. Subtract the saturated temperature from the actual
in positive contact with the suction line and should suction line temperature.The difference is superheat.
be insulated.Valves set at high superheat will lower
refrigeration capacity. Low superheat promotes Too low a suction superheat can result in liquid being returned to the
liquid slugging and compressor bearing washout. compressor.This will cause dilution of the oil and eventual failure of
(e) Using suitable instruments,carefully check line the bearings and rings or in the extreme case,valve failure.
voltage and amperage at the compressor terminals. Too high a suction superheat will result in excessive discharge
Voltage must be within 10%of that indicated on the temperatures which cause a breakdown oftheoil and results in piston
condensing unit nameplate. If high or low voltage is ring wear,piston and cylinder wall damage.
indicated,notify the power company. If amperage
draw is excessive,immediately determine the cause It should also be remembered thatthe system capacity decreases as the
and take corrective action. On three phase motor suction superheat increases. For maximum system capacity,suction
compressors,check to see that a balanced load is superheat should be kept as low as is practical.Copeland mandates a
drawn by each phase. minimum superheatof 207 at the compressor.We recommend that
(f) The maximum approved settings for high pressure the superheat at the compressor be between 20°F and 30`F.
controls on our air cooled condensing equipment
is 425 prig. On air cooled systems,check as follows: If adjustments to the suction superheat need to be made,
Disconnect the fan motors or block the condenser inlet the expansion valve at the evaporator should be adjusted.
air. Watch high pressure gauge for cutout point. See instructions on page 34.
Recheck all safety and operating controls for proper
operation and adjust if necessary.
(g) Check defrost controls for initiation and termination
settings,and length of defrost period. Set fail safe at
length of defrost+25%.
Example: 20 minute defrost +5 minutes
= 25 minute fail safe
(h) Check drain pan for proper drainage.
(i) Check winter head pressure controls for pressure
setting.
(j) Check crankcase heater operation if used.
(k) Install instruction card and control system diagram for
use of building manager or owner.
NOTE:All adjustable controls and valves must be field
adjusted to meet desired operation.There are no
factory preset controls or valve adjustments.
This includes low pressure,high pressure,
adjustable head pressure systems and expansion
valves.
33
Evaporator Superheat General Sequence of Operation
Check Your Superheat.After the box temperature has reached or is Refrigeration Cycle
close to reaching the desired temperature,the evaporator superheat 1. Power is supplied to the timer at terminals"1"and"N".
should be checked and adjustments made if necessary. Generally, 2 The fan delay and the defrost termination thermostat is closed in the
systems with a designTD of 10 F should have a superheat value of fi fan delay position and open in the defrost term;nation position.
to 10'F for maximum efficiency. For systems operating at higherTD's, The unit cooler fans run continuously.
the superheat can be adjusted to 12 to 15"F as required.
3. The defrost heaters are off.
4. The room thermostat closes when the temperature rises
above the desired setting.
of 207 may override these recommendations
on some systems with short line runs. r The liquid line solenoid is energized and opens,which allows liquid
refrigerant to flow through the unit cooler.
6. The low pressure control closes when the suction pressure rises
To properly determine the superheat of the evaporator,the following above the cutin setting of the control.
procedure is the method Heatcraft recommends: 7. On systems with oil pumps,the oil safety control is closed.If the net
oil pressure is less than 9 PSIG for more than 120 seconds, the oil
safety opens, thus breaking the circuit to the compressor contactor
WARNING: It e condensing unit has no flooded con- holding coil.The compressor will not operate.This control is reset
denser head pressure control,the condens- manually and must be reset before the compressor can be
ing unit must have the discharge pressure restarted.
above the equivalent 105Fcondensing 8. The compressor contactor closes.The compressor and condenser
pressure.See refrigerant charging instruc- fan start simultaneously.
tions on page 32.
9. The room temperature gradually decreases to the desired
temperature.
1. Measure the temperature of the suction line at tne point 10. Once the desired temperature is reached,the thermostat opens and
the bulb is clamped. the liquid line solenoid closes,stopping refrigerant flow through the
evaporator.
2. Obtain the suction pressure that exists in the suction line
at the bulb location by either of the following methods: 11. Suction pressure decreases and the compressor contactor opens
when the pressure drops below the cutout setting on the low pressure
a. A gauge in the external equalized line will indicate the control.The compressor and condenser fan stop running.
pressure directly and accurately. 12. This cycle is repeated as many times as necessary to satisfy the room
thermostat.
b. A gauge directly in the suction line near the
evaporator or directly in the suction header of the 13. Frost starts to form on the evaporator coil and continues to form until
evaporator will yield the same reading as 2a above. the defrost cycle is initiated.
3. Convert the pressure obtained in 2a or 2b above to Defrost Cycle
saturated evaporator temperature by using a 1. The defrost cycle starts automatically by the timer at
temperature-pressure chart. predetermined times.Typical settings are two to four
defrost cycles per day for freezers.For heavier frost loads
4. Subtract the saturated temperature from the actual additional settings may be required.
suction line temperature.The difference is Superheat.
2. Switch"2"to"4"opens in the time clock which breaks the
Alternative Superheat Method circuit to the room thermostat,liquid line solenoid,and
evaporator fan motors,allowing the compressor to pump
The most accurate method of measuring superheat is found by down and shut off. Simultaneously switch"1"to"3"closes
following the previous procedure, Temperature/Pressure method. in the timer allowing current to flow to one side of the
However,that method may not always be practical. An alternative defrost heater contactor.When the compressor shuts off,
method which will yield fairly accurate results is the temperature/ an auxiliary contact will send power to the contactor holding
temperature method: coil;thus,energizing the defrost heaters.
1. Measure the temperature of the suction line at the 3. The heaters raise the temperature of the coil to 32'F
point the bulb is clamped(outlet). causing the frost to melt off the coil.
2. Measure the temperature of one of the distributor 4. When the coil warms to 45°F to 55°F,the defrost
tubes close to the evaporator coil(inlet). termination thermostat closes,which allows current to the
switching solenoid in the timer allowing the refrigeration
3. Subtract the inlet temperature from the outlet cycle to begin again.
temperature.The difference is Superheat. 5. The evaporator heaters are off. If the termination
thermostat fails to close,the fail-safe set on the timer will
This method will yield fairly accurate results as long as the pressure terminate defrost.
drop through the evaporator coil is low. 6. The low pressure control closes and the compressor will
start.
7. When the coil temperature reaches 23°F to 30oF,the fan
delay closes.This allows the current to flow to the fan
motors.The fan motors start running.
8. The system will now operate in the refrigeration cycle until
another defrost period is initiated by the timer.
34
Electric Defrost Troubleshooting
The electric defrost units are relatively simple and trouble-free in operation:
Timer
If the system does not go through its proper sequence,check timer operation through a defrost cycle.Check for loose wires or
terminals.Before replacing timer,check other components.
Operation of Paragon Timer
To set time of day grasp knob which is in the center of the inner(fail-safe)dial and rotate it in a counter-clockwise direction.This
will cause the outer(24 hour)dial to revolve. Line up the correct time of day on the outer dial with the time pointer. Do not try to
set the time control by grasping the other(24 hour)dial. Place pins in the outer dial at the time of day that defrost is required.
Operation of Grasslin Timer
To setthe time,turn the minute hand clockwise until the time of day(and AM or PM)on the outer dial is aligned with the triangle
marker on the inner dial.Do not rotate minute hand counter-clockwise.Move the white tab(tripper)on the outer dial outward
at each desired initiation time.Each white tab(tripper)is a 15 minute interval and provides 15 minutes of defrost.For longer
defrost duration,move additional tabs(following in time)from the initiation tab.For example,if a 45 minute defrost is to start
at 7:00 AM,move the tabs outward that lie between 7:00-7:15,7:15-7:30 and 7:30-7:45 on the AM side of the dial.The defrost
will initiate at 7:00 AM and time terminate at 7:45 AM(if temperature termination does not occur first). For models with plastic
cover on timer assembly;re-install cover after adjustment.
Fan Motor
If the motor does not operate or it cycles on thermal overload,remove motor leads from terminal block and apply correct voltage
across the leads. If motor still does not operate satisfactorily,it must be replaced. Before starting the unit,rotate fan blades to
make sure they turn freely and have sufficient clearance.
Fan Delay&Defrost Termination Control
This control is a single pole double throw switch. The red lead wire is wired to common. The black wire is wired in series with
the fan motors.The brown wire is wired in series with the defrost termination solenoid in the timer.The brown and red contacts
close and the black and red contacts open when the temperature is above 55°F.The black and red contacts close and the brown
and red contacts open when the temperature is below 35°F.
On initial"pull down"of a warm box the fan will not start until the coil temperature reaches approximately 35°F. If the box is still
comparatively warm(60°F)when the fan starts,then blowing this warm air over the coil may cause itto warm up to 55°F and thus
stop the fan. Therefore,the fan may recycle on initial"pull down"This control cannot be adjusted.
If the fan motor fails to start when the control is below 35°F,disconnect the fan motor leads and check the motor as described
for fan motors. Also check whether current is being supplied at"N"and"4"from the timer.The fan delay control must be below
35°F when checking for a closed circuit.
Defrost Heater
If unit shows very little or no defrosting and does not heat,disconnect heater and check to find if it is burned out.To test,apply
correct voltage across heater or use continuity flashlight battery tester.
Drain Pan
If drain pan has an ice build-up,drain line may be frozen. The drain line should be pitched sharply and exit cabinet as quickly
as possible. Sometimes location and ambient at the drain outside of cabinet may cause freeze-up. A drain line heater may be
required to correct the freeze-up. Any traps in the drain line must be located in a warm ambient.
NOTE: After correcting faulty condition it is
essential that the coil and unit be free of
ice before placing unit back on automatic
operation.
35
NOTES:
1. Lockout relays or normally closed switch of auxiliary 2. If the control voltage is to remain energized for any
contact on the compressor contactor may be wired to period of time with the compressor disabled,removethe
defrost contactor. Its purpose is to prevent energizing defrost clock pins to prevent the defrost heaters from
of the defrost heaters until the compressor has pumped energizing.
down and stopped,thus keeping power demand to a
minimum. 3. A Preventative Maintenance schedule should be set up
as soon as possible after start-up to maintain equipment
integrity.
Table 16. Evaporator Troubleshooting Chart
SYMPTOMS POSSIBLE CAUSES POSSIBLE CORRECTIVE STEPS
Fan(s)will not operate. 1. Main switch open. 1. Close switch.
2. Blown fuses. 2. Replace fuses.Check for short
circuits or overload conditions.
3. Defective motor. 3. Replace motor.
4. Defective timer or defrost thermostat. 4. Replace defective component.
5. Unit in defrost cycle. 5. Wait for completion of cycle.
6. Coil does not get cold enough to 6. Adjust fan delay setting of thermostat.
reset thermostat. See Defrost Thermostat Section of
this bulletin.
Room temperature too high. 1. Room thermostat set too high. 1. Adjust thermostat.
2. Superheat too high. 2. Adjust thermal expansion valve.
3. System low on refrigerant. 3. Add refrigerant.
4. Coil iced-up. 4. Manually defrost coil.Check defrost
controls for malfunction.
5. Unit cooler located too close to doors. 5. Relocate unit cooler or add strip curtain
to door opening.
6. Heavy air infiltration. 6. Seal unwanted openings in room.
Ice accumulating on ceiling 1. Defrost duration is too long. 1. Adjust defrost termination thermostat.
around evaporator and/or on 2. Fan delay not delaying fans after 2. Defective defrost thermostat or not
fan guards venturi or blades. defrost period. adjusted properly.
3. Defective defrost thermostat or timer. 3. Replace defective component.
4. Too many defrosts. 4. Reduce number of defrosts.
Coil not clearing of frost during 1. Coil temperature not getting above 1. Check heater operation.
defrost cycle. freezing point during defrost. 2. Adjust timer for more defrost cycles.
2. Not enough defrost cycles per day. 3. Adjust defrost thermostat or timer for
3. Defrost cycle too short. longer cycle.
4. Defective timer or defrost thermostat. 4. Replace defective component.
Ice accumulating in drain pan 1. Defective heater. 1. Replace heater.
2. Unit not pitched properly. 2. Check and adjust if necessary.
3. Drain line plugged. 3. Clean drain line.
4. Defective drain line heater. 4. Replace heater.
5. Defective timer or thermostat. 5. Replace defective component.
Uneven coil frosting 1. Defective heater. 1. Replace heater.
2. Located too close to door or opening. 2. Relocate evaporator.
3. Defrost termination set too low. 3. Adjust defrost termination setting
higher.
4. Incorrect or missing distributor nozzle. 4. Add or replace nozzle with appropriately
sized orifice for conditions.
36
Table 17. System Troubleshooting Chart
PROBLEM POSSIBLE CAUSES POSSIBLE CORRECTIVE STEPS
Compressor will not run 1. Main switch open. 1. Close switch.
2. Fuse blown. 2. Check electrical circuits and motor winding
for shorts or grounds.Investigate for
possible overloading.Replace fuse after
fault is corrected.
3. Thermal overloads tripped. 3. Overloads are automatically reset.Check
unit closely when unit comes back on ine.
4. Defective contactor or coil. 4. Repair or replace.
5. System shut down by safety devices. 5. Determine type and cause of shutdown and
correct it before resetting safety switch.
6. No cooling required. 6. None.Wait until calls for cooling.
7. Liquid line solenoid will not open. 7. Repair or replace coil.
B. Motor electrical trouble. B. Check motor for open windings,short circuit
or burn out.
9. Loose wiring. 9. Check all wire junctions.Tighten all
terminal screws.
10. Phase loss monitor inoperative. 10. Refer to page 17.
Compressor noisy or vibrating 1. Flooding of refrigerant into crankcase. 1. Check setting of expansion valves.
2. Improper piping support on suction or 2. Relocate,add or remove hangers.
liquid line.
3. Worn compressor. 3. Replace.
4. Scroll compressor rotation reversed. 4. Rewire for phase change.
High discharge pressure 1. Non-condensables in system. 1. Remove the non-condensables.
2. System overcharges with refrigerant. 2. Remove excess.
3. Discharge shutoff valve partially closed. 3. Open valve.
4. Fan not running. 4. Check electrical circuit.
5. Head pressure control setting. 5. Adjust.
6. Dirty condenser coil. 6. Clean.
Low discharge pressure 1. Faulty condenser temperature regulation. 1. Check condenser control operation.
2. Suction shutoff valve partially closed. 2. Open valve.
3. Insufficient refrigerant in system. 3. Check for leaks.Repair and add charge.
4. Low suction pressure. 4. See corrective steps for low suction
pressure.
5. Variable head pressure valve. 5. Check valve setting.
High suction pressure 1. Excessive load. 1. Reduce load or add additional equipment.
2. Expansion valve overfeeding. 2. Check remote bulb.Regulate superheat.
Low suction pressure 1. Lack of refrigerant. 1. Check for leaks.Repair and add charge.
2. Evaporator dirty or iced. 2. Clean.
3. Clogged liquid line filter drier. 3. Replace cartridge(s).
4. Clogged suction line or compressor 4. Clean strainers.
suction gas strainers.
5. Expansion valve malfunctioning. 5. Check and reset for proper superheat.
6. Condensing temperature too low. 6. Check means for regulating condensing
temperature.
7. ImproperTXV. 7. Check for proper sizing.
Little or no oil pressure 1. Clogged suction oil strainer. 1. Clean.
2. Excessive liquid in crankcase. 2. Check crankcase heater.Reset expansion
valve for higher superheat.Check liquid line
solenoid valve operation.
3. Low oil pressure safety switch defective. 3. Replace.
4. Worn oil pump. 4. Replace.
5. Oil pump reversing gear stuck in wrong 5. Reverse direction of compressor rotation.
position.
6. Worn bearings. 6. Replace compressor.
7. Low oil level. 7. Add oil and/or through defrost.
8. Loose fitting on oil lines. B. Check and tighten system.
9. Pump housing gasket leaks. 9. Replace gasket.
Compressor loses oil 1. Lack of refrigerant. 1. Check for leaks and repair.Add refrigerant.
2. Excessive compression ring blow by. 2. Replace compressor.
3. Refrigerant flood back. 3. Maintain proper superheat at
compressor.
4. Improper piping or traps. 4. Correct piping.
Compressor thermal protector 1. Operating beyond design conditions. 1. Add components to bring conditions
switch open. within acceptable limits(i.e.,CPR/EPR
valves,addtional condenser surface,
liquid injection,etc.).
2. Discharge valve partially shut. 2. Open valve.
3. Blown valve plate gasket. 3. Replace gasket.
4. Dirty condenser coil. 4. Clean coil.
5. Overcharged system. 5. Reduce charge.
37
Preventive Maintenance
Unit Coolers Air Cooled Condensing Units
At every six month interval,or soonerif local conditions cause clogging
or fouling of air passages through the finned surface,the following uarterl-
items should be checked.
1) Visually inspect unit 1) Visually inspect unit
• Look for signs of corrosion on fins,cabinet,copper Look for signs of oil stains on interconnection piping and
tubing and solderjoints. condenser coil.Pay close attention to areas around
• Look for excessive or unusual vibration for fan blades solderjoints,building penetrations and pipe clamps.
or sheet metal panels when in operation.Identify fan Check any suspect areas with an electronic leak detector.
cell(s)causing vibration and check motor and blade Repair any leaks found and add refrigerant as needed.
carefully.
• Check condition of moisture indicator/sightglass in the
• Look for oil stains on headers,return bends,and coil sight glass if so equipped.Replace liquid line drier if there
fins.Check any suspect areas with an electronic leak
detector. is indication of slight presence of moisture.Replace
refrigerant,oil and drier if moisture concentration is
• Check drain pan to insure that drain is clear of debris, indicated to be high.
obstructions or ice buildup and is free draining.
2) Clean evaporator coil and blades • Check moisture indicator/sightglass for flash gas.If found
• Periodic cleaning can be accomplished by using a brush, check entire system for refrigerant leaks and add
pressurized water or a commercially available evaporator refrigerant as needed after repairing any leaks.
coil cleaner or mild detergent.Never use an acid
based cleaner.Follow label directions for appropriate Check compressor sightglass(if equipped)for
use.Be sure the product you use is approved for use in proper oil level.
your particular application.
• Flush and rinse coil until no residue remains. Check condition of condenser.Look for accumulation
of dirt and debris(clean as required).
• Pay close attention to drain pan,drain line and trap.
3) Check the operation of all fans and ensure airflow is Check for unusual noise or vibration.Take corrective
unobstructed action as required.
• Check that each fan rotates freely and quietly.Replace
any fan motor that does not rotate smoothly or makes an Inspect wiring for signs of wear or discoloration and
unusual noise. repair if needed.
• Check all fan set screws and tighten if needed.
• Check and tighten all flare connections.
• Check all fan blades for signs of stress or wear.
Replace any blades that are worn,cracked or bent. Serni-Annually
• Verify that all fan motors are securely fastened to the 2) Repeat all quarterly inspection items.
motor rail.
• Lubricate motors if applicable. 3) Clean condenser coil and blades
• Periodic cleaning can be accomplished by using a brush,
4) Inspect electrical wiring and components pressurized water and a commercially available foam coil
• Visually inspect all wiring for wear,kinks,bare areas and cleaner.If foam cleaner is used,it should not be an acid
discoloration.Replace any wiring found to be damaged. based cleaner.Follow label directions for appropriate use.
• Verify that all electrical and ground connections are Rinse until no residue remains.
secure,tighten if necessary.
• Check operation/calibration of all fan cycle and 4) Check operation of condenser fans
defrost controls when used. Check that each fan rotates freely and quietly.
Replace any fan motor that does not rotate smoothly
• Look for abnormal accumulation of ice patterns and or makes excessive noise.
adjust defrost cycles accordingly
• Check all fan blade set screws and tighten as required.
• Compare actual defrost heater amp draw against unit
data plate. Check all fan blades for signs of cracks,wear or stress.
• Visually inspect heaters to ensure even surface contact Pay close attention to the hub and spider.Replace blades
with the coil.If heaters have crept,decrease defrost as required.
termination temperature and be sure you have even coil
frost patterns.Re-align heaters as needed. • Verify that all motors are mounted securely.
• Check drain line heat tape for proper operation Lubricate motors if applicable.Do not lubricate
(supplied and installed by others). permanently sealed,ball bearing motors.
5) Refrigeration Cycle 5) Inspect electrical wiring and components
• Check unit cooler superheat and compare reading for . Verify that all electrical and ground connections are
your specific application secure,tighten as required.
• Visually inspect coil for even distribution
38
• Check condition of compressor and heater contactors. 2) Clean condenser coil and blades
Look for discoloration and pitting.Replace as required. Periodic cleaning can be accomplished by using brush,
pressurized water or a commercially available coil cleaning
• Check operation and calibration of all timers,relays foam.If a foam cleaner is used,it should not be an acid based
pressure controls and safety controls. cleaner. Follow label directions for appropriate use.
Clean electrical cabinet.Look for signs of moisture,dirt, Clear unnecessary trash and debris away from condenser.
debris,insects and wildlife.Take corrective action as
required.
3) Check the operation of all fans
•Verify operation of crankcase heater by measuring amp Check that each fan rotates freely and quietly.Replace
draw. any fan motor that does not rotate smoothly or makes an
unusual noise.
6) Check refrigeration cycle
• Check suction,discharge and net oil pressure readings. Check all fan set screws and tighten if needed.
If abnormal take appropriate action.
• Check all fan blades for sighs of stress or wear.Replace any
• Check operation of demand cooling,liquid injection or blades that are worn,cracked or bent.
unloaders if so equipped.
Check pressure drop across all filters and driers. Verify that all fan motors are securely fastened to the motor
Replace as required. rail.
• Verify that superheat at the compressor conforms to Lubricate motors if applicable(most Heatcraft condenser
specification.(30°F to 45°F) motors are permanently sealed ball bearing type and do not
require lubrication)
• Check pressure and safety control settings and verify
proper operation. 4) Inspect electrical wiring and components
• Visually inspect all wiring for wear,kinks,bare areas and
Annually discoloration.Replace any wiring found to be damaged.
7) In addition to quarterly and semiannual maintenance Verify that all electrical and ground connections are secure,
checks,submit an oil sample for analysis tighten if necessary.
• Look for high concentrations of acid or moisture.Change
oil and driers until test results read normal.
• Check operation/calibration of all fan cycle controls when
• Investigate source of high metal concentrations,which used.
normally are due to abnormal bearing wear.Look for
liquid refrigerant in the crankcase,low oil pressure or low
superheat as a possible source.
8) Inspect suction accumulator(if equipped) Replacement Parts by InterLINK
• If the accumulator is insulated remove insulation and C_m d.1W*�^ P^
inspect for leaks and corrosion. InterLink is your link to a complete line of dependable and
• Pay close attention to all copper to steel brazed certified commercial refrigeration parts,accessories and innovative
connections electronic controls for all Heatcraft Refrigeration Products (HRP)
brands - including Bohn, Larkin, Climate Control and Chandler.
• Wire brush all corroded areas and peeling paint. At InterLink, we provide our wholesalers with a comprehensive
selection of product solutions and innovative technologies for the
• Apply an anticorrosion primer and paint as required. installed customer base.And every product is built to ensure the
Re-insulate if applicable. same high performance standards with which all HRP brands are
built—backed by a dedicated team to serve every customer need,
Air Cooled Condensers and Fluid Coolers delivering at the best lead times in the industry.
Replacement parts should be obtained from your local InterLink
At every six month interval,or sooner if local conditions cause wholesaler. Replacement parts, which are covered under the
clogging or fouling of air passages through the finned surface,the terms of the warranty statement on page 2 of this manual,will be
following items should be checked. reimbursed for total part cost only. The original invoice from the
parts supplier must accompany all warranty claims for replacement
1) Visually inspect unit part reimbursement. Heatcraft Refrigeration Products reserves
• Look for signs of corrosion on fins,cabinet,copper tubing the right to adjust the compensation amount paid on any parts
and solderjoints. submitted for warranty reimbursement when a parts supplier's
original invoice is not provided with a claim.For more information,
• Look for excessive or unusual vibration for fan blades or call 800-686-7278 or visit www.interlinkparts.com.
sheet metal panels when in operation.Identify fan cell(s)
causing vibration and check motor and blade carefully.
• Look for oil stains on headers,return bends,and coil fins.
Check any suspect areas with an electronic leak detector.
39
Diagram 1. Typical Wiring Diagram for Single Evaporator with and without Defrost Timer.
Air Defrost with Defrost Timer FAACTORYAMOUNTED IN
CONDENSING UNIT
ro �
DEFROST �_ av rnol
TIMER
______-- ___�_+ 1 I I.sv
1 1
4 1 1
1 1 1
x
1
1 1 / L1
(REFER TO UNIT DATAPLATE) 1 -----J
-------- •_ ___________I I
POWER SUPPLY ___-__ FAN
I
AN Rr
R (OPTIONAL)
FIELD-AuUI
JTED
WIRE NUTS w
OR SUPPLIED EY OTHERS
SUPPLIED BY OTHERS. UNIT COOLER
Air Defrost without Defrost Timer
(REFER TO UNIT DATAPLATE) �, _____MV?MOMR
POWER SUPPLY z. Lsv-----L 100
FAN 3. POS-----PfIP OOMJ SWf TUi
----
----------
MR 4. RT------Amu trEawsYAr
r-------------ti 5. w+------wrftE+afr
1 6. -FACTORY I
4fE2.0 WIRING
FAN
LUTOR
PART All. 29613714
RT
(OPTIONAL) FIELD-MOUNTED
OR SUPPLIED BY OTHERS UNIT COOLER
Diagram 2. Typical Wiring Diagram for Single Evaporator with Defrost Timer Only.
(OPTIONAL)
FACTORY-MOUNTED IN
CONDENSING UNIT
/ I �
DEFROST �ro rrwt�a
TIMER
1 TM r_--_i_ �_i \\ I ro�i Rxs csw
r---T—r"------ ____ QV IAMT 1
I I 1 I I I � ► �
1 I 1 I I I �—
� 1 1 1 I I
t 1
1 r��� 1 1 1
1 I I I 1 I
O o 0 b o b o 0 o 3 81 I 1
Hi H2 H3 N J X FI F2 F3 4 3 1 I 1
O O O 1
FIELD SLFFL IEp 1.�-_
AXI-ER (12 QA
(ICATERS
FRO F
M 2" TO "4' RT
(OPTIONAL)
FIELD—MOUNTED
Oriv !MOVE CO'�ECTION OR SUPPLIED
FMM "4" TO "Pi" BY OTHERS
FAN
_ MOTOR
Ep LEGEM,
FjU,WW? 12 GA 1 1. TY______T1MER MOTOR
f1Z011 TO H" 2. DTF'D--- FRDST TERIMINATIQY/FAN DELAY
WJ'Ct? 3. K------!'EATER LIMIT
FAN 4. LSV-----LIOVID SU.EMID VALVE
,�, 5. PDS-----PIAP ODMN 51Y7T>:fl
6. RT------RDDII ffERMQSTAT
1,---------------- FIELD SLPPLIEE�q 7. MN------WIAE ACT
JLIIFEI7 (12 AAJ 6- =FACTMY WIRIND
MOVE FNilt. r�T "3• 9. =F Cr WIRING
F JO. -- ZEW WIRING. DP7IDNAL
CCIV.ECTICN/ HL (WEN St.PPLIED) EAi�DYED) OR FIELD MODIFIED
40 "N'rO H1' Unit Cooler"A„ PART M. 29613707
Diagram 3. Typical Wiring Diagram for Multiple Evaporators with Defrost Timer Only.
(OPTIONAL)
FACTORY-MOUNTED IN
CONDENSING UNIT
DEFROST
d rr�rn
TIMER ------------
—\ mwxr LS✓ 1
-------77
a------
I 1 1 I \ I I
L------/---------------------
I I I I 1 1
--------------------- -----------
ll---------
�r�����___� ; I
'j------------
I
I I 1 1 1 1
Ir-----
I 1 ------______1-T-�-� 1 1 1 1
0 0 o bo6 o 0-3�1
MI H2 M3 N J x FI F2 F3 J 3 NI t?KS N J x F! F7 F3 4 3'
O O O O O
`-� ,.�• ` , FfFln SZ,PFC f- RT
I
rpm �
Tom! TOo` (OPTIONAL) FIELD-MOUNTED(LNIT C:.As. A d at ACYC L1cvMFcr70N OR SUPPLIED SY OTFERS
1
FAaC1w IN, TO )-
/EATERS (EATERS t
OTFO OTF'D Now CCMrECTf[w
FROV i CAS.
71 fAN I fAN ILNf7 LSRS A d B)
MTTlF I � 40JP4 �ECs.G.
------TUER*VTM
2. DTFD----OEFRC5T TEM11"TIOWFAN 0 LAY
FIELD SLRii£D FAN 3 N_------WATER LIAlZr
OQ JLM" (!2 GAt 1gT0R 4. LSV-----LI0U1D SMEh01D VALVE
FROW "f2' 7D N' S. FW_____PLW DOWV s1rITCTI
(wIT CLPS. A d B) B. RT------RpOy ThETEgSTAT
7. yT,I____..WIRE har
'iY ry v y B. -FACTORY w7RlM9
9. _ _=FIELD WIRIAO
L____-__ -_-_---- a____-__���__r_�� 4FACTO?V WIRIFD, OPTIONAL
OR FIELD ACDIF16
r FIELDBFRIED JW1 ER (!2 CM) PART NO. r31:�
I4- (WEEK a*LIED) �C7JIELCT10'.'-�--K (kEN SIiRI.DT [( It•Aorr E.IPLOYED)
Unit Cooler"A" (`"IT�_ A d B' Unit Cooler"B" uvrr CLRS. A d DI
Diagram 4. Typical Wiring Diagram for Single Evaporator/Single Phase Defrost and Evaporator Fan
Contactors.
WETV DEFROST PART NO. 2WI37)5
SLPFL1m TIMER "M" ON OPS(WHEN SUPPLIED)
CHI EF OR "N" ON DEFROST TIMER
qTY
! cw+R
4 Pvs
EF (OPTIONAL)
FACTORY-MOUNTED IN
x aHr CONDENSING UNIT
Ii ti _
N 3A X 4 M 5 5 7
REMOVE FACTORY 4 9
i i I I JUMPER WIRE 1 1 1 I
"3A" TO "N" I •�J��F�_��� I 1
(WHEN HL EMPLOYED) 1 •--- I 1 I
L — — — — — — — — — _ 1 1 1 1 1 I r____________________
L �
— — — — — — — — 1 1 1 1 1
L`— — — — — — — — — - - I I 1 1 1
1 I 1 1 •--------------S+
�� 1 I ( RT
10 0��__0 6 4-0� 0�3-1 (OPTIONAL J FIELD-MOUNTED
HI HZ Ica Fr F2 F3 H ✓ x 4 31 OR SUPPLIED BY OTHERS
L� -O O WIRE "3" TO "3A" WHEN HL EMPLOYED.
141 LEGEND,
WATERS I. DHI-----DEFROST NEATER CONTACTOR
2. EF------LWIT COOLER FAN CONTACTOR
J. TM------TIMER MOTOR
I 4. DTFD----OEFRDST TERMINATIONIFAN DELAY
5. HL------HEATE7R LIMIT
OTFO 6. LSV-----LIQUID SOLENOID VALVE
7. ADS-----FLAP DOWN SWITCH
FAN B. OPS-----OIL PRESSLAE SWITCH (WHEN SLFPLIm)
MO MR 9. RT---=ROOM THS%0OSTAT
IO.CW-----NEATER HOLD OUT RELAY
II. -FACTORY WIRIN3
12. — — =FIELD WIRING-POWER
FAN 13.-—--FIELD WIRING-CONTROL
MOTOR )4. --FACTORY WIRMU. OPTIONAL
(WIN %%FLIED) OR FIELD AR70IFIED
Unit Cooler "A"
41
Diagram 5. Typical Wiring Diagram for Single Evaporator Defrost and Evaporator Fan Contactors.
War DEFROST PART AD. 2961s703
SEFFLIm TIMER "M" ON OPS(WHEN SUPPLIED)
Or,Z OH/ EF OR -N- ON DEFROST TIMER
! Dr<R
Pas
< (OPTIONAL)
EF FACTORY-MOUNTED IN
pal DIED CONDENSING UNIT
x
III III III o
N sA x < 3e OS -6 7
REMOVE FACTORY I I 1
I I I I I I I I JUMPER WIRE J" J_- ---- MOVE CONNECTION FROM -N TO "3A-
I I I I I I I I (WHEN HL EMPLOYED) (WHEN HL AND DH2 EMPLOYED)
1 I 1 I
II LL — _—_—_— —_ - ; 1 I I •-------------------
I I ILLL
L L - - - - - - - - - 1 I I I I I 1
_—_—_—_- - -_ —_- -I
LL — , I I I I I I ( I 1 t --------------S---�M
— L 11 1 1RT
(OPTIONAL) FIELD- OUNTED
TI T2 T3 H! H2 N3 FI F2 F3 N J X I 3 OR SUPPLIED BY 07 HERS
O WIRE -3- TO -3A- WHEN HL EMPLOYED-
LEGEND.
!. awl-----QEFATI,T WATER CONTACTOR !
2, D1Q-----DEFROST I£ATER COVTATOR 2
3. �------LNIT COCrER FAN CQVTACTCR
! 4. 7M______TITTER WTOR
HEATERS WATERS 5. OTFD----DEFROST TEnVINATION/FAN DELAY
ITI EN OTFD 6. kL------WATER LIMIT
Sif'WN 7. LSV-----LIOUIO SOLENOTO VALVE
FAN 8. POS____-FtA4'COWN SWITCH
TOR 9. OPS-----OIL PRE.SSLFE SWI M4 (W}EN SLFF'LrED)
MO 10. RT_____ROOM TTERMOSTAT
I!.----__WATER hCLQ OUT BELAY
12. cFACTORY WIRING
FAN f3. - -=Fi ELD WIRING-POM£A
T10TOR f4.- =FIELD WIRING-0010ROL
K 15. -FACTORY WIRING, OPTIONAL
-_ (WEN SFFLrEW OR FIELD 44norrlm
Unit Cooler "A"
Diagram 6. Typical Wiring Diagram for Multiple Evaporators with Evaporator Fan Contactors but without
Heater Limit Defrost.
DEFROST
TIMER -M- ON OPS(IVHEN SUPPLIED)
N OR -N" ON DEFROST TIMER
PART NG. 296/3n2
II---sr-
PQS
sULIED < Ls FAOCTORYAMO- 4NTED IN
Cal rs¢ Er R
s w Ian CONDENSING UNIT
x
U0 0
X < 38 SI L--------------------
I I 1
L — — — — — — — -------------,
i _ —r 1
I I I I I I - - -----F-- 1
I I
L L
L----------
1 I ( I I 16
f d—s o—a�� r —fib b o 0 o RT
' HI I H3 F/ F2 F3 N J X < J N! 12 HS FI r7 FS O J X O O 1
O O (OPTIONAL) FIELD-MOUNTED
OR SUPPLIED BY OTHERS
MOVE CONNECTION
FROM "N- TO -J-
LE
/ I ' 1 ��-_--LIEFRO5T WATER CONTACTOR I
FEATE7T' I I£ATERS 2_ p��_____OErnosr I TER CONTACTOR 2
OTFO OTFD 3. EF------LNIT COOLER FAN CONTACTOR
<, TITER MOTOR
FAN I FAN 5. DEFR OTFD---- OST TERMINATION/FAN FLAY
Ap TO4 ROTOR 6. t.SV-----LJOUI0 SmEACID VALVE
7. PCs-----PLAp DOWN SWITCH
9. OV OPS-----OIL ARESSLRE SWrTLN (WhEN S.PPLrED)
9. RT------RO TFEfdIA75TAT
FAN FAN 10.OW_____I{ATER MMD OVT RELAY
MOTOR TO TOR Il. •FACTORY WIRING
12. - - IFIELD WIRING-POWER
-- —-- p /3. - +FIELD WIRING-CPVTHOt_
Unit Cooler < FACTORY WIRING. OPTfQwL
Unit Cooler "A" o aR FIELD MWIFfED
42
Diagram 7. Typical Wiring Diagram for Multiple Evaporators with Heater Limit Defrost and Evaporator
Fan Contactors.
DEFROST
TIMER "M" ON OPS(WHEN SUPPLIED)
OR "Nr" ON DEFROST TIMER PART NO. 29615701
I OIq 1
POS
s.�Llm _ ` __ ff (OPTIONAL)
Dw O�e EF FACTORY-MOvNTEO IN
D1 SLOWL1m CONDENSING UNIT
X
-- N Ax 4 39 5 6
EMOVE FACTORY JUMPER WIRES ^3A^ TO "N^
TO "N" (WHEN HL EMPLOYED)
I ____________
LL _____________• I
-T �_�_�__�_ Z__ _
LL
L_L
Nl NZ FLi FI FZ F3 N J X 4 3 HI AQ N3 FI rZ 1`3 N J X I ,! , RT
OQ 0 TIONAL) FIELD-MOUNTED
OR SUPPLIED BY OTHERS
MOVE CONNECTION
FROM "N" TO "J"
LEGOV
I__ CF)�T NEATER CONTACTOR I
(EATERS 1f ATFI7$ I 2. CH ___
LK12_____DEFRO_.ST/FATED CONTACTOR 2
O TFO DTFD 3. EF------WIT COOLER FAN CONTACTOR
4. TV------TIAER MOTOR
FAN FAN I S. DTFD----DEFROST TERZVINATrowr N DELAY
AA7TIAR AGTOR 6. FL------HEATER LIMIT
7. LSV-----LIOUID SOLEMID VALVE
- Ii - 7i G. POS-__-_FLw IY.vw SW;TLH
9. CPS- -OIL FT�S,St1?E SWITa4 (MFEN SLFPLrED)
FAk FAN 10, RT-----ROOM THDaWTAT
AlOTOA MOTOR II.OW-----(EATER HOLD OUT RELAY
to. —=FACTORY WIRING
-- -- 13. — —-FIELO WIRING-FON£R
Unit Cooler "A" Unit Cooler "B" 14 _=FIELOWIRING-ING3,, CPT OPTI-
!S. ----=FACTORY WIRIO4AL
OR FIELD MODIFIED
Diagram 8. Typical Wiring Diagram for Multiple Evaporators Defrost and Evaporator Fan Contactors
with Unit Cooler Holdout Relay.
DEFROST PART NO. 2WI3713
TIMER ^M" ON OPS(WHEN SUPPLIED)
TA1 OR "N" ON DEFROST TIMER
Ow L-_
ETA E}/t2
PDS
9JIm ` (OPTIONAL)
Ofl Dole Er5 FACTORY-MOUNTED IN
X Dal I EF CONDENSING UNIT
I N 3A X 4 Id S 6 7 x2 O�O"
EW I o o—4—o o I
RE VE rACTOPY JtAFER W117CS 1 L
-3A" r0 ro -N" 1 I 1 I •I I I I I W ET7 K E7FLOYEO! ___1._J I 1 7 I — y
r-_r .1----J 1 I U_ _� V , I
i_L —r - -1 SL- - -� — - - T I I RT I
L T—L (OPTIONAL) FIELD-MOUNTED
LL OR SUPPLIED BY OTHERS
1 t r I------- r J i 1 1 WIRE
MFEW#.L
i� W�,To r _I I I , ; I�EW-LOYED.
b b� O E7FLOTED. b b�hL
o O LE END,
FI f2 F3 N J X 4 3 NI 1Q{t7 F/ F2 F3 N J X 4 3 1. 01i1-----pE7hUST WA TER GWTACTOR I
1 O — O 2 DErROSr NEATER CONTACTOR 2
3. E7-------WIT LODLER rAN CONTACTOR
4. rM------TIAE77 WTOR
6. Orm----DEFRGST TER4INATION/FAN DELAY
6. K------IE47ER LIMIT
7. L5V-----LIOUIO SCLEAOID VALVE
I I G. -____p1,4p I- I TLN
G. CPS-----OIL ARE_ -PC SWITCH (WFEN SCFI�L IEDI
EA TIERS I OTFD TOM OTFD 10.RT--___-R 01 TNERALLSTAT
/!. E}AI---WIT COOLER NCl.O-0Ur RELAY I
FAN r,Vy 12. E)4R2---LWT COOLER NCLO-OUT;FLAY 2
yOTOq I YOTCA 13. pp____hEATER NCLD CUT$FLAY
14, •FACTORY WIRING
IS. — — �1`1E1 O WIRING-POWER
I&-_-=FIELD WIRING-CONTROL
TAN (WFEN FP.IED) FJ$J rWFEN%PLIED) 17. -- =ORCr1E2D"IWIRF)ED r1LruL
I.GrOR AoraR
Unit Cooler"A" Unit Cooler"B"
43
Diagram 9. Typical Wiring Diagram for Defrost Contactor with Evaporator Holdout Relay
without Heater Limit.
DEFROST PART AO. 29540701
TIMER 'M" ON OPSNNFN SUPPLIED)
OR IN.
ON DEFROST TIMER
r�
EFRI
EFJ7 tTR2 Elf?3 PQS
a (OPTIONAL)
FACTORY-MOUNTE IN
aII 1 Er off
DHI Ole DMs ONa EF ONA CONDENSING UNI
x
• ETFt? Ewl — —
1 N SA X < M $ 6 7 3C JD X2 XS X{
T T a+e4 p °
"M Nf,Pa.00 FM wrT caaA7r A mall.
rrAFNr.Ia.Nlrvrwrr COMA?Omaa. r-----------♦
97AE NI.ra.w rvr wrT COULD?c TO me. 1 1 1 Rr r — — — — 4-1 L—
IrrAF NI,Nz.ia►p our COx"o To am. I I i (OPTIONAL) FIELD-MOUNTEDI 1 1
W.W rr.rr,n 1CP—-11 COCLA s M v.l I 1 OR SJPP 1EO BY OTI- RS I 1 1
1 1 1 I 1 1
1 I ir............------F---------J 1
r--+----------- ---♦—r�'---------------T-- --————————————- I
I1 l r----____--_----
I I I I I 1 1 I I
I I I I 1 1 1 1 t
0000 F00000c� o 00 1a00000� 0 00 000000� 0 00
NI fQ W FI F?rJ N J X 1 3 H/ I&'11S F1 F7 F3 N J X a 3 1 HI hQ M!FI F2 FS N J X a 3 H! L Mr ,-0
f7 F3 Al J X 1 3'
1EATETS 1I O 0 0 0 O O 1I
O O
-w-
I HFArERS 1 f
/EATERS
arm DrFD
I DTFD
FAN FAIT FAN FAN
wrtr I Moro? iorcr+ uoroR
FAN FAN FAN FAN
LOTTA4 AMOK MOTOR uor
UNIT COOLER "A" UNIT COOLER "S" UNIT COOLER "C" LNIT COOLER "D"
Diagram 10. Typical Wiring Diagram for Defrost Contactor with Evaporator Holdout Relay
with Heater Limit.
DEFROST PART AO. 29640601
TIMER "M" ON OPS(WNEN SUPPLIED)
OR "N" ON DEFROST TIMER
rL
1 DNR F>Ra
a as h PVS (OPTIONAL)
5 ACTORY-MOUNTSJrNN
CHI DW D4J Oia FF X DRI r EF OKa CONDENSING UNI
.-o—k�A2 ppr
N 3A X a 3D O 6 7 JC M Xn2 X;f Xa
I 1 1 1
RE.WYE FACTURY JIF IER WJRES
YTAE NI.Nr.Po fov wrT�Or A ro wl. L—J 1 i L--_ J i 4—*
me Nr.ra.Na far wfr cmars rooa. _ r-------_
—T___--_--a----• 1 1 t I RT r•— � 1
rrlE Nr,Pa,Pe raa wrr maAA a m oo- � I 1 t —1�—� �
rrar Nr,Nz,Pa far wrr oaaa o ro aM. 1 I 1 1(OPTIONAL) FIELD-A(CUNTEIj
rrAe fr,fA,q fw Au wrr caaam ro r�.l 1 1 i 1 OR FUPPL 1ED BY OTHERS 1 J
1 1 1 1 1 I r 1 1 1
1 1 I Ir—_1--------------_---L------J 1 1
1---_----�--- 1 1 ——— --1 1 I
1 1 r --------------t
I I I I I I I 1 I 1 1 1 I
1 I t l I 1 1 1 1 1 1 I 1
0 0 0 0 0 0� o Sl �o o°� 0�0 81 0 0 0 0 03 0 0 0 0 0 0 0 0J 0 0
Hl H?HS F, F?FS N J X a 3� P1I IQ W ff F2 FJ N J X l S i NI IQ P[7 rl F2 FS N J X a 3 NI PQ W FI f?FJ N J X a 3
`�
1 ° 10
WATERS I TQQ
PEA TENS I 07ID WATEM I OTYD NFA 7EM I OR"D
PAN 10"TWi MOTUR I 40T(.R I NDTOR
FAN M- FAN kL FAN FAN K
W?M 14) IOTOR rO
UNIT COOLER "A" UNIT COOLER "B' UNIT COOLER "C" LWIT COOLER "D"
44
Diagram 11. Typical Wiring Diagram for Multiple Evaporators with Defrost Switches Connected in Series
and without Holdout Relays/Heater Limits.
I DTI rALTCRY
N CCnDETdfhO WIT
STFA.fED OAM -Y-Ov CPSI1rE7I 9,-PL furl
+• t
aN! as CW a - TIAOi OR Tr a cf""r MAW
! � res
.« pill
X ! �-lm
LLL
s<
r J I I Ll---i t--- �, X Q T
JJ L I I—T'- , t
OU
I I r
— _—
1 DN11.2.j ok.O O ot 0' O ' ;1
h
— �— 1 1
11
I 1
1 1
.E. I D7TD NLA I DTTp W-A I DTTD . A I Aln 1 1 rAN I rAN I rAN I rAN I 1 1
rAN rAN rµ rAY SEE 101E 21 1
WIT CRtDI-A- WIT COULM-p- WIT COLE1a_C- WIT OOOLM -O-
1 1
1,CF41 1 1
1. avl-----CU710ST NaATTI1 CdvTACTw ! 1 1
I. aQ-----O01105T NEATTW rnNTAtTOv 1 1 1
S. PIT---' OWST 1EArM GYIYlACTOR.T
OE►11105T�wl'E77 OOVTAC7Oi•
1 1
3. ET--___.WI►070.ER rAN 00vT4CJO7 1
6. TL--....7 Aq NOTa9 r----------
�. Tes>r/N+rlcwrAN DELAY horE51 I 1
R. tSY-----lfOfllO SRO.v/O vAC vE 1. REMOVE rACrORY JUPER WJAES '3A^ To -N- 1 9. PCs--..-/IAP OOw•SIII rW APO .3a- TO .N- 1 rR�T
IO,a-S-----DAL PPK33LM SwI rA1[OPEN SLOMIED1 L-Ei+ —A
1 l.RT-.._. „ >TrAT (MEN!EATER LfYIT SW, Is aw.orEnl L.2.1 �J --
12.M0-----r•1'9 MX1 our 111AY 2. HOVE CCM/�ECri0ry rmw -N- TO J /0°rfaw�l r1¢D-aoWrED
1J- ✓ACMRY WIRIAO (TYPICAL J PLACES)
!•- - - -HELD WIRI.O.POWW OR SL—LTFD By Or>ER5
!S. - •.411ELC WRIND-p]Vmm
16. .ACMTY EIRMO. OPTIOYAL
CV?rIELO Acotrico P►. NO. 29OW101 REV
45
Service • •
A permanent data sheet should be prepared on each refrigeration Ifanotherfirmisto handle service and maintenance,additional copies
system at an installation,with a copy for the owner and the original should be prepared as necessary.
for the installing contractor's files.
System Reference Data
The following information should be filled out and signed by Refrigeration Installation Contractor at time of start-up.
Date System Installed:
Installer and Address:
Condensing Unit Unit Model#:
Unit Serial#:
Compressor Model#: Compressor Model#:
Compressor Serial#: Compressor Serial#:
Electrical Volts Phase
Voltage at Compressor L1 L2 L3
Amperage at Compressor L1 L2 L3
Evaporator(s) Quantity
Evaporator Model#: Evaporator Model#:
Evaporator Serial#: Evaporator Serial#:
Electrical Volts Phase
Expansion Valve Manufacturer/Model
Ambient at Start-Up °F
Design Box Temperature °F 'F
Operating Box Temperature F °F
Thermostat Setting °F °F
Defrost Setting /day minutes fail-safe _/day minutes fail-safe
Compressor Discharge Pressure PSIG _PSIG
Compressor Suction Pressure PSIG PSIG
Suction Line Temperature @ Comp. °F °F
Discharge Line Temperature @ Comp. °F °F
Superheat at Compressor °F °F
Suction Line Temperature @ Evaporator °F °F
Superheat at Evaporator °F °F
Evacuation: #times Final Micron #Times Final Micron
Evaporator Drain Line Trapped Outside of Box: yes 1-1 no
46
47
Since product improvement is a continuing effort,we reserve the right to make changes in
specifications without notice.
PPPPP-
BONN
•O CHANDLE]�
lAR1aN
From: Michael Kolakowski
To: Jonnv Chavez; Hannah Hardwick
Subject: ARL 5/29/24
Date: Wednesday,May 29,2024 4:07:12 PM
This message is from an External Sender
This message came from outside the City of Arlington
5983 final, failed. Sprinkler system required. Provide confirmation letter from installer
indicating that manufacturer's installation instructions have been completed.
Get Outlook for iOS