HomeMy WebLinkAbout17714 82nd Dr Ne_BLD6556_2025
Installa on Instruc ons and
Use & Care Guide
Residential Gas
Water Heater
Residen al Atmospheric Gas Water Heater
with the Flammable Vapor Igni on Resistant Safety System
DO NOT RETURN THIS UNIT TO THE STORE WARNING: If the informa on in
Read this manual and the labels on the water heater before you install, these instruc ons is not followed
operate, or service it. If you have diffi culty following the direc ons, or exactly, a ï¬ re or explosion may
aren’t sure you can safely and properly do any of this work yourself: result causing property damage,
personal injury or death.
• Call our Technical Assistance Hotline at 1-877-817-6750 or visit
h p:// www.AOSmithAtLowes.com. We can help you with installa on, opera ons, Do not store or use gasoline or other
troubleshoo ng, or maintenance. Before you call, write down the model and serial fl ammable vapors and liquids in the
number from the water heater’s data plate. vicinity of this or any other appliance.
Incorrect installa on, opera on, or service can damage the water heater, your house WHAT TO DO IF YOU SMELL GAS
and other property, and present risks including ï¬ re, scalding, electric shock, and • Do not try to light any appliance.
explosion, causing serious injury or death. • Do not touch any electrical switch;
do not use any phone in your build-
ing.
• Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instruc ons.
• If you cannot reach your gas sup-
Table of Contents Page plier, call the ï¬ re department.
IMPORTANT SAFETY INFORMATION ............................................. 3 Installa on and service must be per-
GETTING STARTED ........................................................................ 7 formed by a qualiï¬ ed installer, service
agency or the gas supplier.
INSTALLATION ............................................................................. 14
OPERATION ................................................................................. 23
TROUBLESHOOTING ................................................................... 25
MAINTENANCE ........................................................................... 28
NOTES ......................................................................................... 31
LOW LEAD
REPAIR PARTS ............................................................................. 35 CONTENT
Keep this manual in the pocket on heater for future reference whenever maintenance, adjustment or service is required.
Retain your original receipt as proof of purchase.
2000536058 (Ver. 00) 100277333 (A) 100XXXXXX (A)_200XXXXXX (Ver. 00)
October 2016
COMPLETED INSTALLATION TYPICAL
Vent
pipe Cold water
shut off
Expansion
tank
(Connect to
Hot cold water
water supply)
line
Cold
water
Dra hood line
T&P
relief
valve
T&P
discharge
pipe
Gas supply
shut off
Drain valve
Gas supply
Drain pan
discharge
pipe
Gas control
valve/thermostat
Sediment Trap Metal drain pan
IMPORTANT SAFETY INFORMATION
Read and follow all safety messages and instruc ons in
Important informa on to keep SAFETY
this manual.
Fill out this sec on and keep this
manual in the pocket of the water
This is the safety alert symbol. It is used to alert you to
heater for reference.
poten al physical injury hazards. Obey all safety mes-
sages that follow this symbol to avoid possible property Date Installed:
damage, serious injury or death. Do not remove any
permanent instruc ons, labels, or the data plate from either the outside of
the water heater or on the inside of the access panels. Keep this manual
Model number:
near the water heater.
Serial number:
DANGER indicates hazardous situa-
DANGER on that, if not avoided, will result
in death or serious injury. Maintenance performed:* Date:
WARNING indicates a hazardous
WARNING situa on that, if not avoided, could
result in death or serious injury.
CAUTION indicates a hazardous
CAUTION situa on that, if not avoided, could
result in minor or moderate injury.
NOTICE indicates prac ces not
NOTICE related to physical injury.
WARNING! If the informa on in these instruc ons is not followed exactly,
a ï¬ re or explosion may result causing property damage, personal injury or
death. Do not store or use gasoline or other fl ammable vapors and liquids in
the vicinity of this or any other appliance.
An odorant is added by the gas supplier to the gas used by this water heater.
This odorant may fade over an extended period of me. Do not depend upon
this odorant as an indica on of leaking gas. We recommend installing a fuel gas
and carbon monoxide detector. *Drain and fl ush tank and remove and
inspect anode rod a er ï¬ rst six months
of opera on and at least annually
therea er. Operate the Temperature
and Pressure Relief Valve (T&P) annu-
ally and inspect T&P valve every 2-4
years (see the label on the T&P valve for
maintenance schedule). See the Main-
tenance sec on for more informa on
about maintaining this water heater.
Residen al Standard Gas Water Heater Use and Care Guide • 3
IMPORTANT SAFETY INFORMATION
o reduce the risk of property Gas Pressure
Table 1
T damage, serious injury or death, WARNING! The gas supply pressure
SAFETY Time to Produce
read and follow the precau ons below, must not exceed the maximum supply
Temperature a Serious Burn
all labels on the water heater, and pressure as stated on the water
the safety messages and instruc ons heater’s data plate. The minimum 120°F (49°C) More than 5 minutes
throughout this manual. supply pressure is for the purpose of
125°F (52°C) 1½ to 2 minutes
input adjustment. L.P. gas supply
RISKS DURING pressure must not exceed 13†water
130°F (54°C) About 30 seconds
INSTALLATION AND column. Have a qualiï¬ ed person
(licensed plumber, gas company 135°F (57°C) About 10 seconds
MAINTENANCE personnel, or authorized service
technician) check for proper L.P. gas 140°F (60°C) Less than 5 seconds
Li ing Risk
pressure. L.P. gas pressures exceeding
145°F (63°C) Less than 3 seconds
WARNING! The 13†water column can result in serious
water heater is heavy. injury or death from explosion or ï¬ re. 150°F (66°C) About 1½ seconds
Follow these precau-
ons to reduce the RISKS DURING 155°F (68°C) About 1 second
risk of property damage, injuries from OPERATION
For informa on about changing the
li ing or impact injuries from dropping
the water heater. Scalding Risk factory temperature se ng, refer to
the “Adjus ng the Temperature†sec-
• Use at least two people to li the This water heater on in this manual .
water heater. can make water hot Even if you set the water heater’s gas
enough to cause severe burns instantly,
• Be sure you both have a good grip control valve to a low se ng, higher
resul ng in severe injury or death.
before li ing. water temperatures may occur in cer-
• Use an appliance dolly or hand • Feel water before bathing or tain circumstances:
truck to move the water heater. showering. • In some cases, repeated small draws
• To reduce the risk of scalding,
of water can cause the hot and cold
install Thermosta c Mixing Valves
water in the tank to “stack†in layers.
(temperature limi ng valves) at
Explosion Risk If this happens, the water can be as
each point-of-use. These valves
much as thirty degrees ho er than
automa cally mix hot and cold
WARNING! Read the water heater’s the gas control valve se ng. This
water to limit the temperature at
data plate to determine the type of temperature varia on is the result
the tap. Mixing valves are available
gas required. Failure to follow these of your usage pa ern and is not a
from Lowe’s®. Follow manufac-
instruc ons can result in serious injury malfunc on.
turer’s instruc ons for installa on
or death from explosion, ï¬ re or and adjustment of the valves. • Water temperature will be ho er if
carbon monoxide poisoning. someone adjusted the gas control
• The gas control valve on this water
heater has been factory set to its valve to a higher se ng.
• Do not connect a natural gas water
lowest se ng to reduce the risk • Problems with the gas control valve
heater to an L.P. gas supply.
of scalding. Higher temperatures or other malfunc ons may result in
• Do not connect an L.P. gas water increase the risk of scalding, but higher than expected water tem-
heater to a natural gas supply. even at 120°F, hot water can scald. peratures.
• Use a new CSA approved gas If you choose a higher tempera- • If the water heater is in a hot envi-
supply line. ture se ng, Thermosta c Mixing ronment, the water in the tank can
• Install a shut-off valve on the gas Valves located at each point-of-use become as hot as the surrounding
supply line. are par cularly important to help air, regardless of the temperature
avoid scalding. se ng.
4 • Residen al Standard Gas Water Heater Use and Care Guide
IMPORTANT SAFETY INFORMATION
• If the water supplied to the water Fire Risk • Keep the water heater from becom-
heater is pre-heated (for example, ing wet. Immediately shut the water
This water heater is SAFETY
by a solar system) the temperature heater off and have it inspected by a
in the tank may be higher than the equipped with a Flam- qualiï¬ ed person if you ï¬ nd that the
water heater’s temperature se ng. mable Vapor Igni on wiring, thermostat(s) or surround-
• Should overhea ng occur or the Resistance (FVIR) system. ing insula on have been exposed
burner fail to shut off , turn off the FVIR is designed to reduce the risk of to water in any way (e.g., leaks from
manual gas supply valve to the water fl ammable vapor-related ï¬ res. FVIR plumbing, leaks from the water
heater and call a qualiï¬ ed person. makes this product more sensi ve to heater itself can damage property
installa on errors or improper installa- and could cause a ï¬ re risk). If the
To reduce the risk of unusually hot wa-
on environments. The FVIR system will water heater is subjected to fl ood
ter reaching the ï¬ xtures in the house,
not prevent a possible ï¬ re/explosion if condi ons or the thermostat(s) have
install Thermosta c Mixing Valves at
the igniter is depressed and fl ammable been submerged in water, the en re
each point-of-use.
vapors have accumulated in the combus- water heater must be replaced.
If anyone in your home is at par cular on chamber with the pilot light off .
risk of scalding (for example, the elder- • Replace the water heater’s viewport
ly, children, or people with disabili es) Do not a empt to light this appliance, if glass is missing or damaged. Repair
or if there is a local code or state law or depress the igniter bu on, if you the combus on chamber door seals
requiring a certain water temperature suspect fl ammable vapor have accumu- if damaged.
at the hot water tap, these precau ons lated inside or outside the appliance. Explosion Risk
are par cularly important. Immediately call a qualiï¬ ed person to
According to a na onal standard (ASSE inspect the appliance. Water heaters High temperatures and
1070) and many local plumbing codes, subjected to a fl ammable vapors inci- pressures in the water
the water heater’s gas control valve dent will show a discolora on on the heater tank can cause an explosion re-
should not be used as the sole means fl ame arrestor and require replacement sul ng in property damage, serious in-
to regulate water temperature and of the en re water heater. Improper jury or death. A new Temperature and
avoid scalds. installa on or an inadequate air supply Pressure (T&P) Relief Valve is included
can also cause the FVIR system to dis- with your water heater to reduce risk
Properly adjusted Thermosta c Mixing
able the water heater. of explosion by discharging hot water.
Valves installed at each point-of-use al-
Addi onal temperature and pressure
low you to set the tank temperature to WARNING! This water heater has a
protec ve equipment may be required
a higher se ng without increasing risk rese able thermal switch installed as
by local codes.
of scalds. A higher temperature se ng part of the FVIR system. Do not
allows the tank to provide much more a empt to disable or modify this A na onally recognized tes ng labo-
hot water and can help provide proper feature in any way. Doing so can lead ratory maintains periodic inspec on
water temperatures for appliances such to ï¬ re, explosion or excessive and of the valve produc on process and
as dishwashers and washing machines. abnormal produc on of carbon cer ï¬ es that it meets the requirements
Higher tank temperatures (140°F) monoxide. for Relief Valves for Hot Water Supply
also kill bacteria that cause a condi- To reduce the risk of a ï¬ re that could Systems, ANSI Z21.22. The T&P Relief
on known as “smelly water†and can result in property damage, or serious Valve’s relief pressure must not exceed
reduce the levels of bacteria that cause injury or death: the working pressure ra ng of the wa-
water-borne diseases.
• Do not store things that can burn ter heater as stated on the ra ng plate.
Water Contamina on Risk
easily such as paper or clothes next
Maintain the T&P Relief Valve properly.
Do not use chemicals that could con- to the water heater.
Follow the maintenance instruc ons
taminate the potable water supply. Do
• Do not store or use gasoline or other provided by the manufacturer of the
not use piping that has been treated
fl ammable substances in the vicinity T&P Relief Valve (label a ached to T&P
with chromates, boiler seal, or other
of this or any other appliance. Relief Valve). An explosion could occur
chemicals.
Residen al Standard Gas Water Heater Use and Care Guide • 5
IMPORTANT SAFETY INFORMATION
if the T&P Relief Valve or discharge instruc ons. When the installa on is Installa on Accessories
pipe is blocked. Do not cap or plug the complete, check the vent’s dra using
SAFETY
T&P Relief Valve or discharge pipe. the instruc ons on pages 23-24.
• Install a fuel gas and carbon mon-
Fire and Explosion Risk if Hot Water is
oxide detector in the living areas
Not Used for Two Weeks or More.
of your home.
CAUTION! Hydrogen gas builds up
• Do not install this water heater in
in a hot water system when it is not
a mobile home or manufactured
used for a long period (two weeks or
housing.
more). Hydrogen gas is extremely
• Failure to follow these instruc-
fl ammable. If the hot water system
ons can result in serious injury
has not been used for two weeks or
or death from carbon monoxide Figure 1 - Gas Water Heater Hook-Up Kit
more, open a hot water faucet for
poisoning.
several minutes at the kitchen sink
before using any electrical appliances Burn Risk
connected to the hot water system. If
hydrogen is present there will This water heater’s vent-
probably be an unusual sound such as ing system can become
“air†escaping through the pipe as hot hot enough to burn. Do not touch the
water begins to fl ow. Do not smoke or ven ng system while water heater is
have an open fl ame or other igni on on, or un l the water heater is turned
source near the faucet while it is off and the ven ng allowed to cool.
open.
Figure 2 - Install a Pressure Reducing Valve set
to 50 to 60 PSI.
Carbon Monoxide Risk
WARNING! This water heater
operates by burning gas. Carbon
monoxide is a colorless, odorless, gas
that is a by-product of burning of fuels
such as coal, wood, charcoal, oil,
kerosene, propane, and natural gas.
Breathing excessive and abnormal
amounts of carbon monoxide can
cause carbon monoxide poisoning,
resul ng in serious injury or death.
This water heater must be supplied
with adequate combus on air and
must be properly
vented to the
outdoors. Have a
qualiï¬ ed person
(licensed plumber,
authorized gas
company personnel, or authorized
service technician) install the ven ng
system using these installa on
6 • Residen al Standard Gas Water Heater Use and Care Guide
GETTING STARTED
Review all of the instruc ons Massachuse s code requires this water point-of-use.
1 before you begin work. If you heater to be installed in accordance • Fuel gas and carbon monoxide
aren’t sure that you can safely with Massachuse s 248-CMR 2.00 and detector.
and properly do this work yourself, call 248-CMR 5.00: State Plumbing Code. Combus on and
your Lowe’s® store to arrange for Other local and state authori es may
Professional Installa on (you may also have similar requirements or other Ven la on Air Supply
call a qualiï¬ ed person of your choice, codes applicable to the installa on of Before installing the water heater, you
such as a licensed plumber, to have the this water heater. must determine the amount of air
work done). Improper installa on can needed to supply this water heater
Before you start, be sure you
damage the water heater, your home 3 and any other gas appliances in the
have the following tools and
and other property, and can present same area and provide adequate air for
supplies:
risks of serious injury or death. combus on and ven la on. Consult a
• Common plumbing tools (depend- qualiï¬ ed person if you’re unsure of the
This water heater is design-
2 ing on what type of water pipes proper way to supply air to your water
cer ï¬ ed by CSA Interna onal
you have). heater.
as a Category I, non-direct
• Tefl on® tape or pipe joint com-
WARNING! This gas water heater
vented water heater which takes its
pound approved for potable water.
combus on air either from the installa- requires an adequate source of clean GETTING STARTED
• For homes with copper pipes,
air for combus on and ven la on.
on area or from air ducted to the unit
you may purchase a Gas Water
Without suffi cient air, your water
from the outside. This water heater
Heater Hook-Up Kit ( available from
heater will have frequent pilot outages
must be installed according to all local
Lowes®) with compression ï¬ ngs
and may emit excessive and abnormal
and state codes or, in the absence of
that don’t require soldering. This
amounts of carbon monoxide.
local and state codes, the “Na onal
kit includes two 12†fl ex water
Fuel Gas Codeâ€, ANSI Z223.1(NFPA Before beginning:
lines, two compression ï¬ ngs, an
54)-current edi on. This is available 18†fl exible gas line, two nipples, Calculate total BTU/HR ra ng of all ap-
from the following: pliances.
and Tefl on® tape.
• For homes with plas c pipe, use To calculate the combus on air and
CSA America, Inc.
threaded connectors suitable for ven la on required, add up the total
8501 East Pleasant Valley Road
the speciï¬ c type of plas c pipe BTU/HR ra ngs of all gas burning ap-
Cleveland, OH 44131
used: CPVC or PEX (cross-linked pliances (e.g., water heaters, furnaces,
Na onal Fire Protec on Associa on polyethylene). Do not use PVC clothes dryers) in the same area.
1 Ba erymarch Park pipe. Your water heater’s BTU/HR ra ng is on
Quincy, MA 02269 • Non-corrosive gas leak detec on
the data plate, located next to the gas
solu on made from hand dish-
control valve/thermostat. The BTU/HR
Check with local code offi cials about washing soap mixed with water (1
ra ngs should be on the other appli-
codes governing this installa on. Have part soap to 15 parts water) or chil-
ances’ data plates. If you have trouble
your installa on inspected by a code dren’s soap bubbles and a small,
determining the BTU/HR ra ngs,
offi cial to ensure the installa on meets so -bristled brush.
contact the manufacturer or have a
all local codes. • An appliance dolly or hand truck to
qualiï¬ ed person determine the ven la-
move the water heater.
NOTICE: If you lack the necessary skills on requirements. NOTICE: If you are
Recommended Accessories:
required to properly install this water replacing your old water heater with
heater, or you have diffi culty follow- • A metal drain pan. one that has a higher BTU/HR ra ng,
ing the instruc ons, you should not • Automa c water leak detec on the amount of ven la on required may
proceed but have a qualiï¬ ed person and shut-off device. be greater.
perform the installa on of this water • Pressure Reducing Valve.
heater. • Thermal Expansion Tank.
• Thermosta c Mixing Valves at each
Residen al Standard Gas Water Heater Use and Care Guide • 7
GETTING STARTED
Example: Op on A: Installa on without Check for Chemicals:
Gas Burning Appliance BTU/HR Ra ng outside ven la on (not recom- Installa ons where corrosive chemi-
Gas Water Heater 40,000 mended) cals may be present require outside
Furnace 75,000 Ven la on with outside air is recom- air. Air for combus on and ven la on
Dryer 20,000 mended for all installa ons. Even if must be clean and free of corrosive or
the water heater is installed in a large, acid-forming chemicals such as sulfur,
open room inside the house, outdoor fl uorine, and chlorine. Ven la on with
air is usually needed because modern outside air will reduce these chemicals,
Total 135,000
homes are very ghtly sealed and but it may not completely eliminate
Your Appliances: o en do not supply enough air to the them. Failure due to corrosive chemi-
Gas Burning Appliance BTU/HR Ra ng water heater. However, when installed cals is not covered by the warranty.
in a large indoor space, it may be pos- Examples of loca ons that require
Gas Water Heater
sible to provide enough air without outside air due to chemicals include:
outside ven la on. If you are unsure if • Beauty salons
your installa on loca on has enough
• Photo processing labs
ven la on, contact your local gas
• Indoor pools
GETTING STARTED u lity company or code offi cials for a
Total safety inspec on. • Laundry, hobby, or cra rooms
Table 2 provides examples of minimum The following instruc ons will help de- • Chemical storage areas
square footage (area) required for termine if it may be possible to install Products such as aerosol sprays, de-
various BTU/HR totals. Areas used for without outside ven la on. Even if tergents, bleaches, cleaning solvents,
storage or which contain large objects this may be possible, you will need to gasoline, air fresheners, paint and
containing less air than is assumed for conduct the vent dra test on pages varnish removers, and refrigerants
the room sizes in Table 2 – see Op on 23-24 when installa on is ï¬ nished. If should not be stored or used near the
A for more speciï¬ c calcula ons. there is not enough ven la on, you water heater.
will need to ven late with outside air. A1: Calculate the air volume of
the room
Table 2
Air requirements depend on the size of
BTU/HR Minimum Square Typical Room the room.
Input Feet with 8’ Ceiling with 8’ Ceiling Floor Area (Square feet) X Ceiling
Height (feet) = Room Volume (cubic
30,000 188 9 x 21
feet)
45,000 281 14 x 20 If there are large objects in the room
(e.g., refrigerator, furnace, car), sub-
60,000 375 15 x 25
tract their volume from the volume of
the room to get a be er es mate of
75,000 469 15 x 31
the air available.
90,000 563 20 x 28 Room Volume – Object Volume = Air
Volume
105,000 657 20 x 33
120,000 750 25 x 30
135,000 844 28 x 30
8 • Residen al Standard Gas Water Heater Use and Care Guide
GETTING STARTED
A2: Calculate required air volume mum free area is sized according to Table may be adequate).
3. Two openings must be used when B3: Determine minimum free
A water heater installed in an unconï¬ ned
ven la ng with air from another room. area required for each vent
a c or garage requires that the space
be at least 50 cubic feet per 1,000 BTU/ The outside air can be taken from a opening
HR of the total input for all gas burning crawl space or a c open to the out- The size of the vent openings depends
appliances in the same area. doors and adequately ven lated. You on the total BTU/HR ra ng of all appli-
[Total BTU/HR/1000] x 50 = Cubic feet may use ver cal or horizontal ducts. ances in the space (use your calcula on
of air required. from “Before beginningâ€) and the type
B2: Determine type of ven la-
of vent used. Table 3 provides the mini-
Example: on
mum free area for each vent opening
(135,000 / 1000) x 50 = 6,750 There are several types of ven la on depending on the type of ven la on.
If the air volume of the room is less that can be used :
B4: Calculate minimum size of
than the required air volume, you must 1. Direct to outdoors
vent openings and ducts
provide two permanent outside air 2. Ver cal ducts
openings that draw in suffi cient air. Use 3. Horizontal ducts The vent cross-sec onal area needed to
Op on B. provide the free area depends on the
4. Single opening (not recom-
covering on the vent openings. Typical GETTING STARTED
If the air volume of the room is greater mended; must be at least 100
than the required air volume, it may square inches. Not appropriate vents use louvers or grilles to protect
be possible to install the water heater for conï¬ ned spaces smaller than the opening. The louver or grill itself
without outside ven la on. 50 cubic feet per 1,000 BTU/HR as blocks some of the free area, so the
opening may need to be larger to meet
A3: Check that combus on ven- calculated in sec on A or when
the minimum free area requirements.
la on is adequate ge ng air from another room.)
5. From a larger room inside the Use the following formula to calculate
Because modern homes are o en well-
house (not recommended – refer the required cross-sec onal area:
sealed to prevent dra s, even a large
to sec on A above to determine if Cross-sec onal area = minimum free
room may not provide enough combus-
the combined volume of the rooms area required ÷ percent free area of
on air without ven la on. To con-
ï¬ rm that your installa on has enough
Table 3
combus on air, conduct the vent dra
test on pages 23-24 when installa on is Minimum Free Area of Permanent Openings for Ven la on and Combus on Air
ï¬ nished. Supply – All Air from Outdoors Only.
Op on B: Install with outside Based on the total BTU/HR input ra ng for all gas burning appliances within a
ven la on conï¬ ned space.
Ven la on with outside air is recom-
Opening Source Minimum Free Area
mended, and, for most installa ons, is
Per Opening (sq. in.)
needed. There may be exis ng ven la-
on that is adequate, or you may need *Direct to outdoors 1 sq. in. per 4,000 BTU/HR (see ï¬ gure on page 10)
to add more ven la on.
Ver cal ducts 1 sq. in. per 4,000 BTU/HR (see ï¬ gure on page 10)
Supplying outside air to typically requires
two openings. One opening must be Horizontal ducts 1 sq. in. per 2,000 BTU/HR (see ï¬ gure on page 10)
within 12 inches from the fl oor and
the second opening must be within 12 Single Opening 1 sq. in. per 3,000 BTU/HR (see ï¬ gure on page 10)
inches from the ceiling. Although a single
*These openings connect directly with the outdoors through a ven lated a c, a
opening is not preferred, you may use a
ven lated crawl space, or through an outside wall.
single opening to outside air if the mini-
Residen al Standard Gas Water Heater Use and Care Guide • 9
GETTING STARTED
covering (in decimals – e.g., 60% = .6) B5: Check that air source is
For example, an installa on area that clean and free of chemicals
requires openings with 100 square Air for combus on and ven la on
inches of free area would need 134 must be clean and free of corrosive
square inch openings if using metal or fl ammable chemicals. A failure due
louvers rated at 75% free area (100 sq. to corrosive chemicals in the air is not
in. ÷ .75 = 134 sq. in.). covered by the warranty. Combus-
If you do not know the % free area for on air must be free of acid-forming
your louver or grill, use the following chemicals such as sulfur, fl uorine, and
values: chlorine. Be sure that air at the vent
inlets is free of such chemicals. Figure 5 - Horizontal duct openings
• For wood louvers or grilles: 20%
• For metal louvers or grilles: 60% B6: Check that combus on
ven la on is adequate
Follow these rules to ensure that vents
and ducts provide adequate air fl ow: To conï¬ rm that your installa on has
enough combus on air, conduct the
• Each vent opening must be no
GETTING STARTEDsmaller than 100 square inches . vent dra test on pages 23-24 when
installa on is ï¬ nished.
• Ducts must have the same cross-
sec onal area as free area of the Combus on Air Supply Op ons
opening.
Figure 6 - Single opening
• Rectangular ducts must have a
minimum dimension of no less
than three inches .
• All screens must have mesh ¼†or
larger.
• Moveable louvers must be locked
open or interconnected with the
equipment so that they open au-
toma cally during opera on.
• Keep louvers and grills clean and Figure 3 - Direct to outdoors openings
free of debris or other obstruc-
ons.
Figure 4 - Vertical duct openings
10 • Residen al Standard Gas Water Heater Use and Care Guide
GETTING STARTED
Ven ng Installing a New Vent System upward slope of at least ¼ inch per
foot. Install pipe avoiding unnecessary
WARNING! Carbon Monoxide The vent pipe must meet the following bends. Pipe joints must be fastened by
Hazard. This water heater must be speciï¬ ca ons: sheet metal screws or other approved
supplied with adequate air and vented
means. Support the pipe to maintain
to outdoors. The vent system must be Type of Material
clearances and to avoid separa on of
installed by a qualiï¬ ed person. UL listed Type B double wall or single
joints or other damage. Vent pipe must
Examples of a qualiï¬ ed person include wall metal vent pipe must be used.
be accessible for cleaning, inspec on,
gas technicians, authorized gas Local codes may be more restric ve
and replacement.
company personnel, and authorized and may not allow single wall vent pipe.
service technicians. Failure to properly Single-wall vent pipe cannot be used for
Termina ons
vent the water heater can result in water heaters located in a cs and may
If local codes allow, this water heater
severe injury or death from carbon not pass through a c spaces, crawl
may be terminated into an exis ng
monoxide poisoning. spaces, or any conï¬ ned or inaccessible
chimney using the instruc ons below.
loca on. Single-wall vent pipe cannot
Otherwise, this water heater’s vent
The vent system must be installed pass through any interior wall.
must terminate ver cally (sidewall or
according to local and state codes, or
in the absence of local or state codes, Clearance to Combus ble Materials other horizontal termina ons are not GETTING STARTED
The vent pipe cannot pass through any allowed).
the current edi on of the Na onal Fuel
Gas Code, ANSI Z223.1 (NFPA 54). Do ceiling, fl oor, ï¬ rewall, or ï¬ re par on.
Any part of the vent system must main- Chimney Termina on
not common vent this water heater
with any power vented appliance. Do tain the following clearances from any
not use a vent damper anywhere in the combus ble materials:
vent system of this water heater.
• Single-wall vent pipe must main-
To reduce the risk of carbon monoxide tain a six inch clearance from
poisoning, install a fuel gas and carbon combus ble materials.
monoxide detector. Install and maintain
• The clearance from combus ble
the detector in accordance with the
materials of UL listed Type B dou-
manufacturer’s instruc ons and local
ble-wall vent pipe is speciï¬ ed by
codes.
the manufacturer of the vent pipe. Figure 7 - Chimney termination vent system
UL listed Type B double-wall vent
Replacing a Water Heater Using NOTICE: Before connec ng a vent to
pipe may pass through walls or par-
a chimney, make sure the chimney
the Exis ng Vent System ons constructed of combus ble
passageway is clear and free of obstruc-
material if the minimum clearance
Read the “Installing a New Vent Sys- ons. The chimney must be cleaned if
speciï¬ ed by the manufacturer of
tem†sec on of this manual and make previously used for ven ng solid fuel
the vent pipe is maintained.
sure your vent system is properly in- appliances or ï¬ replaces. Also consult lo-
stalled. Inspect the exis ng vent system Vent Installa on cal and state codes for proper chimney
for obstruc ons, corrosion, and proper To improve the fl ow of exhaust gases, sizing and applica on or, in the absence
installa on. Repair or replace if neces- we recommend that a minimum of 12 of local and state codes, the “Na onal
sary. The exis ng vent system must be inches of ver cal vent pipe be installed Fuel Gas Codeâ€, ANSI Z223.1(NFPA
UL listed Type B double wall or single on the dra hood prior to any elbow. 54)-current edi on.
wall metal vent pipe of either 3 inch or A por on of the vent pipe (up to 75%
• The vent pipe must be installed
4 inch diameter and installed according of the total ver cal height) can be
above the extreme bo om of the
to the vent manufacturer’s instruc ons horizontal, but the termina on must
chimney to prevent poten ally
and the terms of its lis ng. Do not use be ver cal. For the horizontal sec on,
blocking the fl ue gases.
other materials such as dryer vent hose. install without dips or sags with an
Residen al Standard Gas Water Heater Use and Care Guide • 11
GETTING STARTED
• The vent pipe must be ï¬ rmly at- 1. Install a readily accessible manual
tached and sealed to prevent it shut-off valve in the gas supply line
from falling out. as recommended by the local u l-
ity. Know the loca on of this valve
• To aid in removing the vent pipe, a
and how to turn off the gas to this
thimble or slip joint may be used.
unit.
• The vent pipe must not extend 2. Install a Sediment Trap as shown
beyond the inner edge of the in the Gas Piping ï¬ gure below. The
chimney as it may restrict the Sediment Trap must be no less than
space between it and the opposite three inches long for the accumula-
wall of the chimney. Figure 8 - Vertical gas vent system with type B on of dirt, foreign material, and
double wall vent pipe
water droplets.
Do not terminate the vent pipe in a
3. Install a ground joint union be-
chimney that has not been cer ï¬ ed
tween the gas control valve and
for this purpose. Some local codes may
the manual gas shut-off valve. This
prohibit the termina on of vent con-
is to allow easy removal of the gas
GETTING STARTEDnectors in a masonry chimney.
control valve.
Common (combined) ven ng is allow- 4. Turn the gas supply on and check
able with ver cal Type B vent systems for leaks. Use a small, so -bristled
and lined masonry chimneys as long brush to apply a hand dishwash-
as proper dra for the water heater ing soap and water mixture (1
Figure 9 - Venting through a chimney with type
is established under all condi ons of B double wall vent pipe part soap to 15 parts water) or
opera on. Do not common vent this children’s soap bubbles to all con-
Gas Piping
water heater with any power vented nec on points of the gas piping.
appliance. Gas piping must be installed accord-
Saturate all the connec ons and
ing to local and state codes or, in the
check for gas leaks (which will ap-
Ver cal Termina on absence of local and state codes,
pear as small bubbles). If any leaks
NOTICE: The gas vent must be termi- the “Na onal Fuel Gas Codeâ€, ANSI
are detected, ghten the appropri-
nated in a ver cal posi on to facilitate Z223.1(NFPA 54)-current edi on.
ate connec on(s) and re-check.
the removal of exhaust gases.
NOTICE: When installing gas piping, Gas Pressure
Ver cal exhaust vents must terminate apply pipe joint compound or Tefl on®
with a listed cap or other roof assem- tape approved for fuel gases. NOTICE: When tes ng gas pipes with
bly and be installed according to their a test pressure of more than ½ psi (3.5
manufacturer’s instruc ons. An unused kPa), disconnect the gas line at the
chimney fl ue or masonry enclosure manual shut off valve and cap the gas
may be used as a passageway for the line. Do not subject the water heater’s
installa on of vent pipe. Do not com- gas control valve or manual shut off
mon vent this water heater with any valve to more than ½ psi (3.5 kPa)
power vented appliance. The follow- pressure for any reason. If you are
ing ï¬ gures are examples of vent pipe pressure tes ng the gas line with test
system installa ons and may or may pressure of ½ psi (3.5 kPa) or less, you
not be suitable for your speciï¬ c appli- may isolate the water heater from the
ca on. Consult the “Na onal Fuel Gas gas line by closing the manual shut off
Figure 10 - Gas Piping
Codeâ€, NFPA 54, ANSI Z223.1-current valve.
edi on and local codes.
12 • Residen al Standard Gas Water Heater Use and Care Guide
GETTING STARTED
Space Hea ng con nuous fl ow of water through the
air handler circuit during the off cycle.
TYPICAL MIXING VALVE INSTALLATION • The domes c hot water line from the
COMBINATION SPACE HEATING / POTABLE WATER HEATING SYSTEM
water heater should be ver cal past
EXPANSION TANK COLD WATER INLET any mixing valve or supply line to the
CHECK VALVE †SHUT-OFF air handler to remove air bubbles from
(1/8†HOLE VALVE
TEMPERED WATER CHECK VACUUM
DRILLED IN CLAPPER)
TO FIXTURES VALVE †RELIEF the system. Otherwise, these bubbles
(MUST MEET TEMPS LISTED VALVE
IN MASS. CODE 248 CMR †) will be trapped in the air handler heat
FLOW CONTROL exchanger coil, reducing effi ciency.
VALVE
UNION UNION
PUMP * • Do not connect the water heater to
TEMP/
MUST BE VERTICAL TO PRESSURE OUT any system or components previously
REMOVE AIR BUBBLES RELIEF IN
VALVE used with non-potable water heat-
HOT
WATER TO COIL ing appliances when used to supply
OUT AIR
MIXING VALVE
HANDLER
(MUST BE INSTALLED BELOW potable water.
TOP OF WATER HEATER SEE
AS PER MANUFACTURER’S NOTE ‡ AIR Solar Installa on
RECOMMENDATIONS) HANDLER
SHUT-OFF
VALVE * GETTING STARTED
WATER HEATER ACCEPTED If this water heater is used as a solar stor-
BY THE BOARD FOR
INSTALLATION IN age heater or as a backup for the solar
MASSACHUSETTS. †100’-0†MAXIMUM DISTANCE
FROM WATER HEATER
TO FAN COIL AND BACK †system, the water supply temperatures
(DEVELOPED LENGTH) NOT
INCLUDING COIL IN HEATING UNIT. to the water heater tank may be in excess
* MASSACHUSETTS INSTALLATION REQUIREMENTS: of 120°F. A Thermosta c Mixing Valve or
1.) CONNECT ELECTRONICALLY-CONTROLLED TIMER TO AN ALL-BRONZE PUMP. PUMP MUST ACTIVATE EVERY 6 HOURS
FOR 60 SECONDS. TURN PUMP TIMER OFF BEFORE CLOSING PIPING LOOP SHUT-OFF VALVE. other temperature limi ng valve must be
2.) ALL WATER PIPING MUST BE INSTALLED AND INSULATED IN ACCORDANCE WITH MASSACHUSETTS CODE (248 CMR
& 780 CMR). installed in the water supply line to limit
3.) PIPING LOOP BETWEEN WATER HEATER AND AIR HANDLER MUST BE INSTALLED IN COMPLIANCE WITH 248 CMR.
the supply temperature to 120°F. The unit
†REQUIRED FOR MASSACHUSETTS.
‡ PIPING FROM THE TOP OF THE WATER HEATER WITH TEES IS ACCEPTABLE. must be set to Standard Mode (See Operat-
ing Modes in Opera on sec on on page
Figure 11 - Combustion Space Heating and Potable Water (Typical Installation)
24).
Some water heater models are equipped
• Do not use with piping that has been NOTICE: Solar water hea ng systems can
with inlet/outlet connec ons for use with
treated with chromates, boiler seal or o en supply water with temperatures
space hea ng applica ons. If this water
other chemicals and do not add any exceeding 180°F and may result in water
heater is to be used to supply both space
chemicals to the water heater piping. heater malfunc on.
hea ng and domes c potable (drinking)
• If the space hea ng system requires
water, the instruc ons listed below must
water temperatures in excess of 120°F,
be followed.
install a Thermosta c Mixing Valve
• This water heater is suitable for in the domes c (potable) hot water
combina on water (potable) hea ng supply at each point-of-use to limit the
and space hea ng and not suitable for risk of scald injury. Install the mixing
space hea ng applica ons only. valve per its manufacturer’s instruc-
• Be sure to follow the manual(s) ons.
shipped with the air handler system. • Pumps, valves, piping, and ï¬ ngs
• This water heater is not to be used as must be compa ble with potable
a replacement for an exis ng boiler water.
installa on. • A properly installed fl ow control valve
is required to prevent thermosiphon-
ing. Thermosiphoning is the result of a
Residen al Standard Gas Water Heater Use and Care Guide • 13
INSTALLATION
Step 1: an outside faucet and measure the mal expansion
maximum water pressure experienced
Verify that you have a properly sized
throughout a 24-hour period (highest
Thermal Expansion Tank. We recom-
✓ Verify that your water pressures o en occur at night). mend installing an expansion tank if
home is equipped your home does not have one. Plumb-
and up-to-date for ing codes require a properly pressur-
ized, properly sized Thermal Expan-
proper opera on sion Tank in almost all homes.
Installing a new water heater is the
perfect me to examine your home’s
plumbing system and make sure the
system is up to current code stan-
dards. There have likely been plumb- Figure 12 - Use a Water Pressure Gauge to make
ing code changes since the old water sure your home’s water pressure is not too
high.
heater was installed. We recommend
installing the following accessories To adjust your home’s water pressure:
and any other needed changes to Locate your home’s Pressure Reduc-
bring your home up to the latest code ing Valve (PRV) on the main incoming
requirements. Upda ng your plumb- (cold) water supply line and adjust the
ing system can help extend the life of water pressure control to between
your water heater, avoid damage to 50 and 60 psi. If your home does not
your home and property, and reduce have a Pressure Reducing Valve, install Figure 13 - A Thermal Expansion Tank helps
the risk of serious injuries or death. a PRV on the home’s main water sup- protect the home’s plumbing system from pres-
sure spikes.
Inspect your home and install any de- ply line and set it to between 50 and HOW: Connect the Thermal Expansion
vices you need to comply with current 60 psi. Pressure Reducing Valves are Tank (available from Lowe’s® .) to the
INSTALLATIONcodes and assure that your new water available at Lowe’s®. cold water supply line near the water
heater performs at its best. Check heater. The expansion tank contains
with your local plumbing offi cial for BACKGROUND: Over the years, many a bladder and an air charge. To work
more informa on. u li es have increased water supply properly, the Thermal Expansion Tank
pressures so they can serve more
must be sized according to the water
homes. In some homes today,
heater’s tank capacity and pressurized
✓ Water pressure pressures can exceed 100 psi. High to match the home’s incoming water
water pressures can damage water
Most codes allow a maximum pressure. Refer to the instruc ons
heaters, causing premature leaks. If
incoming water pressure of 80 psi provided with the Thermal Expansion
you have replaced toilet valves, had a
(we recommend a working pressure Tank for installa on details.
water heater leak, or had to repair
no higher than 50-60 psi). Check your
appliances connected to the plumbing
home’s water pressure with a pressure BACKGROUND: Water expands when
system, pay par cular a en on to
gauge and adjust if necessary. High heated, and the increased volume
your home’s water pressure. When
water pressure can damage the water of water must have a place to go, or
purchasing a PRV, make sure the PRV
heater, piping, and other appliances. thermal expansion will cause large
has a built-in bypass. ✓ Wa- increases in water pressure (despite
HOW: Purchase an inexpensive water ter pressure in- the use of a Pressure Reducing Valve
pressure gauge from Lowe’s®. Con- in the home’s main water supply line).
crease caused by ther-
nect the water pressure gauge to The Safe Drinking Water Act of 1974
14 • Residen al Standard Gas Water Heater Use and Care Guide
INSTALLATION
requires the use of backfl ow preven- water heater’s water supply if a leak
ters and check valves to restrict water occurs.
from your home reentering the public • Install a metal drain pan (available-
water system. Backfl ow preventers are from Lowe’s® ) under the water heat-
o en installed in water meters and er to catch condensa on or leaks
may not be readily visible. As a result, from the piping connec ons or tank.
most all plumbing systems today are Most codes require, and we recom-
now “closed,†and almost all homes mend, installing the water heater in
now need a Thermal Expansion Tank. a metal drain pan that is piped to an
adequate drain. The drain pan must
A Thermal Expansion Tank is a prac - be at least two inches wider than
Figure 15 - Thermostatic Mixing Valves installed
cal and inexpensive way to help avoid the diameter of the water heater.
at each point-of-use can help avoid scalding
damage to the water heater, washing Install the drain pan so the water
BACKGROUND: A Thermosta c Mixing
machine, dishwasher, ice maker, and level would be limited to a maximum
Valve, installed at each point-of-use,
even toilet valves. If your toilet oc- depth of 1-3/4â€. The pan must not
mixes hot water from the water heater
casionally runs for no apparent reason restrict air fl ow to the burner.
with cold water to more precisely
(usually briefl y at night), that may be
regulate the temperature of hot water
due to thermal expansion increasing
the water pressure temporarily. ✓ Water Tempera- supplied to ï¬ xtures. If you aren’t sure
if your plumbing system is equipped
ture Regula on
with properly installed and adjusted
Water Pipe and Install Thermosta c Mixing Valves to Thermosta c Mixing Valves at each
✓ regulate the temperature of the water point where hot water is used, contact
Tank Leaks
supplied to each point-of-use (for a qualiï¬ ed person.
example, kitchen sink, bathroom sink,
bath, shower). Install and adjust the
mixing valve according to its manufac- INSTALLATION
turer’s instruc ons.
WARNING! Even if the water
heater’s thermostat is set to a rela-
vely low temperature, hot water can
scald. Install Thermosta c Mixing
Valves at each point-of-use to reduce
the risk of scalding.
Figure 14 - A metal drain pan piped to an ad-
equate drain can help protect flooring from leaks
and drips.
Leaks from plumbing pipes or from the
water heater itself can damage prop-
erty and could cause a ï¬ re risk.
• Install an automa c leak detec on
and shutoff device ( available from
Lowe’s®). These devices can detect
water leaks and can shut off the
Residen al Standard Gas Water Heater Use and Care Guide • 15
INSTALLATION
or oily vapors, at least annually • Avoid loca ons such as a cs, up-
Step 2:
check and clean the air ï¬ lter. See per fl oors, or where a leak might
Verify that the loca on Maintenance sec on for steps on damage the structure or furnish-
is appropriate cleaning the air ï¬ lter. ings. Due to the normal corrosive
• Do not install in a bathroom, ac on of water, the tank will
WARNING! Do not store or use
bedroom, or any occupied room eventually leak. To minimize prop-
fl ammable materials, vapors, or
normally kept closed. erty damage from leaks, inspect
liquids in the same loca on where this
• If the water heater is installed di- and maintain your water heater
water heater is installed.
rectly on carpe ng, it shall be in- in accordance with this manual’s
Before installing your water heater, stalled on a metal or wood panel instruc ons. Install a metal drain
ensure that it will be located: extending beyond the full width pan under the water heater piped
• Indoors in an area with adequate and depth of the water heater to an adequate drain. Inspect the
air supply. by at least 3 in (76.2mm) in any drain pan, pipes, and surrounding
• In an area that will not freeze. direc on. If the water heater is area regularly and ï¬ x any leaks
• As close as possible to a chimney installed in an alcove or closet, found.
or vent. the en re fl oor shall be covered
• In a metal drain pan piped to an by the aforestated panel. Step 3:
adequate drain. • If your area is prone to earth-
• In an area suitable for ver cal quakes, use special straps as
Removing the old
installa on. required by local building codes.
• In an area with adequate space NOTICE: The state of California re- water heater
(clearances) for periodic servicing quires bracing, anchoring, or strap-
Read each installa on step and
(there must be a minimum of 24 ping the water heater to avoid its 1
decide if you have the neces-
inches of front clearance). moving during an earthquake. Contact
sary skills to install the water
• In an area that allows a minimum local u li es for code requirements in
heater. Only proceed if you are comfort-
clearance from combus ble sur- your area, visit h p://www.dsa.dgs.
INSTALLATION able you can safely perform the work. If
faces as stated on the data plate. ca.gov, or call 1-916-445-8100 and
you are not sure, have a qualiï¬ ed person
• On a fl oor that can support the request instruc ons. Other loca ons
perform the installa on.
weight of a water heater full of may have similar requirements. Check
water. with your local and state authori es.
You will also want to follow these
• Do not install in a loca on prone
guidelines while considering an appro-
to physical damage by vehicles,
priate loca on:
fl ooding, or other risks.
• Do not install near air-moving
devices such as exhaust fans,
ven la on systems, or clothes
dryers.
• Do not obtain ven la ng air for Vehicle
Stop
the furnace/air handler from the
same space as the water heater. Drain Drain
Pan
Ensure that any return air ducts
near the water heater are sealed. Figure 16 - In a garage, install a vehicle stop to
avoid water heater damage.
• If the water heater is located
in an area subject to lint, dust,
16 • Residen al Standard Gas Water Heater Use and Care Guide
INSTALLATION
On the old water heater, turn drain, outside, or in buckets. (Sedi- support the vent pipe un l the new
2 the control knob on the gas ment in the bo om of the tank may water heater is in place.
control valve to the clog the valve and prevent it from
OFF posi on. draining. If you can’t get the tank to
drain, contact a qualiï¬ ed person.)
Turn the cold water supply
6 valve OFF.
Figure 22 - Disconnect the vent pipe from the
draft hood.
Gas Disconnect the water pipes.
control 11 Many water pipes are con-
knob
nected by a threaded union
which can be disconnected with
Figure 19 - Cold water supply in off position.
Figure 17 - Turn gas control/temperature knob OFF. wrenches. If you must cut the water
Using a standard fl at-blade
Turn the manual gas valve for 7 pipes, cut the pipes close to the water
3 screwdriver, open the drain
the water heater’s supply line heater’s inlet and outlet connec ons,
valve. Sediment build up in
OFF. leaving the water pipes as long as
the bo om of the water heater may
Open a hot water faucet and possible. If necessary, you can make
4 let the hot water run un l it is hinder or prevent draining. them shorter later when you install the
cool (This may take 10 min new water heater.
utes or longer).
Figure 20 - Draining the old water heater. Conï¬ rm the manual gas valve
12 INSTALLATION
Also open a hot water faucet for the water heater’s supply
8 to help the water in the tank line is turned off . Disconnect
drain faster. the gas line from the water heater’s
When the tank is empty, gas control valve and cap it.
9 disconnect the Temperature &
Remove the old water heater.
Pressure (T&P) Relief Valve 13 Use an appliance dolly or
discharge pipe. You may be able to
hand truck to move the water
reuse the discharge pipe, but do not
heater.
reuse the old T&P Relief Valve. A new
WARNING! Use two or more people
Figure 18 - Let the hot water run until it is cool. T&P Relief Valve comes with your new
to remove or install a water heater.
WARNING! Be sure the water runs water heater.
Failure to do so can result in back or
cool before draining the tank to reduce
other injury.
the risk of scalding. Figure 21 - Removing the T&P Relief Valve
discharge pipe.
Step 4:
Allow the vent pipe and dra
Connect a garden hose to the 10
5 drain valve and place the hood to cool. Once cooled, Installing the New
disconnect the vent pipe from
other end of the hose in a Water Heater
the dra hood. You may need to
Residen al Standard Gas Water Heater Use and Care Guide • 17
INSTALLATION
Completely read all instruc- which may occur from condensa on drain pan and/or floor. Hold the filter in
1 ons before beginning. If you or leaks in the piping connec ons or place, then stretch the filter clip over
are not sure you can safely tank. The drain pan must be at least the overlapped joint and hook in place
complete the installa on, seek assis- two inches wider than the diameter (see Figure 24).
tance from any of the following sources: of the water heater. Install the drain
• Lowe’s® Professional Installa on pan so the water level is limited to a WRAP THE AIR FILTER ASSEMBLY
AROUND THE BOTTOM OF THE WATER
is available for this product and maximum depth of 1-3/4â€. HEATER (NOTE: CLIP ON TOP EDGE).
the work is guaranteed. Call your Verify that the water heater is
Lowe’s® store to have this water 4
set in place properly. Check
heater installed. that: OVERLAP
4†(100 mm)
• Schedule an appointment with • There is adequate space to install
a qualiï¬ ed person to install your the T&P Relief Valve discharge
water heater. pipe and that it can be piped to a
• Call our Technical Assistance Hotline separate drain (and not into the
at 1-877-817-6750. drain pan).
. • There is adequate access and NOTE: DRAIN PAN SHOWN
space around the water heater REMOVED FOR CLARITY.
Install a metal drain pan that
2 for future maintenance. ATTACH FILTER CLIP AS
is piped to an adequate drain.
The water heater is installed ver cally. SHOWN HOLDING THE
AIR FILTER ASSEMBLY
IN PLACE.
Step 5:
Air Filter Installa on
Once you’ve posi oned the water
heater in the installa on area, install
the wrap-around air ï¬ lter (supplied with FLUSH FIT AGAINST BOTTOM
INSTALLATION OF DRAIN PAN AND/OR FLOOR.
the water heater). The wrap-around air
Figure 24 - Air Filter Installation
ï¬ lter ï¬ ts around the base of the unit. Do
Figure 23 - Metal drain pan piped to drain.
not operate the water heater without a
clean air ï¬ lter in place.
Set the water heater in place
3
taking care not to damage the Before installing the Air Filter
drain pan. When installing 1 Assembly, remove any dust,
directly on carpet, the water heater lint or debris (including any
must be installed on a wood or metal packaging materials or tape) from
under the water heater.
base that extends beyond the dimen-
Installation: Wrap the filter
sions of the water heater (width and 2
around the base of the water
depth) by at least 3 inches (76.2 mm)
heater. Cut to fit around a
in any direc on. If the water heater is
sensor if present. Trim excess filter
installed on carpet in an alcove or
material with scissors but allow filter
closet, the en re fl oor must be covered
material to overlap a few inches (see
by a wood or metal panel. Figure 2).
NOTICE: Most codes require se ng
The filter should fit snugly
the water heater in a metal drain pan 3 against base of the water
piped to an adequate drain. The drain
heater with no gaps. The filter
pan helps avoid property damage must fit flush against the bottom of the
18 • Residen al Standard Gas Water Heater Use and Care Guide
INSTALLATION
Check the filter at least every came with your water heater. Do not T&P Relief Valve. Do not cap,
4 three months and clean as reuse an old T&P Relief Valve. block, plug, or insert any valve
necessary. After installation, • The discharge pipe should be at between the T&P Relief Valve and
the filter may be cleaned by using a least 3/4†inside diameter and the end of the discharge pipe. Do
vacuum cleaner with a brush
sloped for proper drainage. Install not insert or install any reducer in
attachment to remove lint and dust.
it to allow complete drainage of the discharge pipe.
NOTE: because the amount of dust and
both the T&P Relief Valve and the
lint in the air can vary, your filter may
discharge pipe. Step 7:
need to be inspected/ cleaned more
often. In some instances, the filter may
need to be removed and washed using Install Shutoff and Ther-
mild hand soap and water to remove mosta c Mixing Valves
any oily residue. After washing, allow to
dry and properly reinstall. If one is not already installed,
1
Step 6: install a manual shutoff valve
in the cold water line that
Connect the Tempera- supplies the water heater. Install the
shutoff valve near the water heater so
ture and Pressure (T&P)
that it is readily accessible. Only use a
Relief Valve/Pipe Figure 26 - Temperature and Pressure Relief full-fl ow ball or gate valve compa ble
Most T&P Relief Valves are pre- Valve Pipe with potable water.
installed at the factory. In some cases, • The discharge pipe must not be Install a Thermosta c Mixing
2
they are shipped in the carton and smaller than the pipe size of the Valve at each point-of-use (for
must be installed in the opening T&P Relief Valve. The pipe must example, kitchen sink,
marked “T&P Relief Valve†and accord- also be able to withstand 250°F bathroom sink, bath, shower) per the
ing to local codes. (121°C) without distor on. Use valve manufacturer’s instruc ons.
only copper or CPVC pipe. Do not INSTALLATION
use any other type of pipe, such as
PVC, iron, fl exible plas c pipe, or
any type of hose.
• Terminate the discharge pipe a
maximum of six inches above a
fl oor drain or outside the building.
Do not drain the discharge pipe
into the drain pan; instead pipe it
separately to an adequate drain.
In cold climates, terminate the dis- Figure 27 - Install Thermostatic Mixing Valves at
Figure 25 - Temperature and Pressure Relief Valve each point where hot water will be used.
charge pipe inside the building to
WARNING! Even if the water
WARNING! To avoid serious injury an adequate drain. Outside drains
heater’s thermostat is set to a rela-
or death from explosion, install a T&P could freeze and obstruct the
vely low temperature, hot water can
Relief Valve according to the following drain line—protect the discharge
scald. Install Thermosta c Mixing
instruc ons: pipe from freezing.
Valves at each point-of-use to reduce
1 If the T&P Relief Valve was not • Do not place any valve or other the risk of scalding.
factory installed, install the restric on between the tank and
new T&P Relief Valve that
Residen al Standard Gas Water Heater Use and Care Guide • 19
INSTALLATION
IF YOU HAVE COPPER PIPES: connec ons contain non-metallic parts
For water heaters that are fed
3 which could be damaged. The proper
by a solar water hea ng
If your home has copper water pipes, way to connect the water heater to
system (or any other pre-
you can solder the water pipe connec- copper water pipes is as follows:
hea ng system), always install a
ons or use compression ï¬ ngs which
Thermosta c Mixing Valve or other
don’t require soldering. Compression
temperature limi ng device in the
ï¬ ngs are easier to install than solder-
inlet water supply line to limit water
ing pipe. Check with local plumbing
supply inlet temperature to 120°F.
offi cials to determine what types of
Solar water hea ng systems can
pipe materials are suitable for your
supply water with temperatures
loca on. Do not use lead-based solder.
exceeding 180°F and may result in
water heater malfunc on.
• Solder a short length of pipe (about
WARNING! Hot water provided by
a foot or so) to a threaded adapter
solar hea ng systems can cause
severe burns instantly, resul ng in using only 95/5 n-an mony or
severe injury or death. equivalent solder. A ach the thread-
ed adapters to the water heater’s
connec ons (using Tefl on® tape or
Compression ï¬ ngs don’t require soldering.
pipe joint compound). Connect the
NOTICE: Do not solder pipes while home’s water pipes by soldering,
they are a ached to the water heater. keeping the connec ons at the water
The water heater’s inlet and outlet heater cool with wet rags.
INSTALLATION
Step 8: 2 Connect the cold water
supply using 3/4 inch
Connect the Water Na onal Pipe Thread “NPT†to the
ï¬ ng marked “C†(COLD).
Supply
Note that all piping and components For ease of removing the water heater
connected to the water heater must for service or replacement, connect
be suitable for use with potable water. the water pipes with a coupling called
a union. We recommend using a
Determine the type of water dielectric-type union (available from
1
pipes in your home. Most Lowe’s ). Dielectric unions can help
homes use copper water prevent corrosion caused by ny elec-
pipes, but some use CPVC or cross- tric currents common in copper water
linked polyethylene (PEX). Use ï¬ ngs pipes and can help extend the life of
appropriate for the type of pipe in the water heater.
your home. Do not use iron or PVC
pipe.
20 • Residen al Standard Gas Water Heater Use and Care Guide
INSTALLATION
NOTICE: Most water heater models Check inlet and outlet connec-
6
contain energy saving heat traps in the ons and water pipes for leaks.
inlet and outlet connec ons. Do not Dry pipes connec ons so that
remove the heat traps. any drips or leaks will be apparent.
Repair any leaks. Almost all leaks occur
Connect the hot water supply at connec ons and are not a tank leak.
3
using 3/4 inch NPT to the
ï¬ ng marked “H†(HOT). Step 10:
4 Install insula on (or heat Install Dra Hood
tape) on the water pipes
Install the new dra hood by
especially if the indoor 1
aligning the legs and inser ng
installa on area is subject to freezing
Figure 29 - The Thermal Expansion Tank should them into the slots provided on
temperatures. Insula ng the hot water be pressurized with air, using a hand pump, to
match the home’s incoming water pressure. top of the water heater. Do not reuse the
pipes can increase energy effi ciency.
dra hood from the old water heater,
Step 9:
but rather use the new one that came
Adjust (or install) the home’s
5 with your new water heater.
Pressure Reducing Valve to Verify Connec ons and
50-60 psi and install a Thermal Completely Fill Tank 2 Secure the dra hood using
Expansion Tank. the four screws provided.
To remove air from the tank and allow A ach the home’s exis ng vent
the tank to ï¬ ll completely with water, pipe to the dra hood outlet using an
follow these steps: approved vent adapter (not supplied).
Remove the aerator at the
1 nearest hot water faucet. This
allows debris in plumbing INSTALLATION
system to be washed out of the pipes.
Turn the cold water supply
2 back on and ï¬ ll the tank.
Figure 28 - A Pressure Reducing Valve is required
if your home’s water pressure is above 80 psi.
Open a hot water faucet and
3
allow the water to run un l it Figure 30 - Install the new draft hood and secure
fl ows with a full stream. with screws.
Secure the vent adapter to the
3 dra hood with sheet metal
Let the water run full stream
4 screws. Read the Ven ng
for three minutes.
sec on on page 11. Make sure your
home’s ven ng system complies with
Close the hot water faucet
5 the instruc ons in this manual and is in
and replace the aerator.
good condi on.
Residen al Standard Gas Water Heater Use and Care Guide • 21
INSTALLATION
Step 11: room to service the water heater. ✓ Check exis ng vent system for rust,
✓ Not installed directly on a carpeted restric ons/obstruc ons.
Make Gas Connec ons fl oor.
Water System Piping
✓ Metal drain pan installed and piped
The Gas Water Heater Hook-Up Kit ✓
to an adequate drain. Temperature and pressure relief
(available at Lowe’s®) includes a fl ex-
valve properly installed with a
ible gas connector with compression ✓ Water heater not located near an
discharge line run to an adequate
ï¬ ngs to connect the home’s gas line air moving device (fan, clothes
drain and protected from freezing.
to the water heater’s gas control valve. dryer).
✓ Water pipes free of leaks.
Follow the kit’s installa on instruc ons ✓ Not in a loca on with large
to a ach the fl exible gas connector. amounts of lint, dust, etc. (If so, ✓ Water heater completely ï¬ lled with
the air ï¬ lter or fl ame arrestor water.
located on the bo om of the water ✓ Thermal Expansion Tank installed
heater will need to be cleaned ✓
Water Pressure Reducing Valve
more o en.)
installed and adjusted to 50-60 psi.
Combus on Air Supply and
Ven la on ✓ Thermosta c Mixing Valves in-
stalled at each point-of-use.
✓ Adequate air supply for water
heater and any other nearby gas
Gas Supply and Piping
Figure 31 - Flexible gas line connector. appliances.
Once you’ve made the gas connec- If the water heater is installed in a ✓ Gas type is the same as that listed
ons, use a small, so -bristled brush closet or other small, enclosed space on the water heater’s data plate.
to apply a hand dishwashing soap or within the living space of the ✓ Gas line equipped with shut-off
and water mixture or children’s soap house, air supply openings needed. valve.
bubbles (1 part soap to 15 parts water) ✓ Are the openings of suffi cient size? ✓ Adequate gas pipe size and ap-
INSTALLATIONto all connec on points of the gas line
✓ Ductwork is the same cross-sec- proved gas pipe material.
and fl exible gas connector (if used).
onal area as the openings? ✓ All gas connec ons and ï¬ ngs leak
Make sure to generously coat all the
connec ons and check for gas leaks ✓ Outside air openings are preferred checked and any leaks corrected.
(which will appear as small bubbles). and may be required in ghtly built
If any leaks are detected, turn the gas homes.
supply off , ghten the leaking connec- Vent Pipe System
on and re-check. ✓ New dra hood, properly installed.
BEFORE LIGHTING THE WATER ✓ Vent pipe securely fastened to
HEATER... dra hood with screws and sup-
Make sure all checklist items have ported properly.
been completed. ✓ Vent pipe made of approved mate-
Water Heater Loca on rial and either 2†or 3†in diameter.
✓ Installa on area free of corrosive ✓ Vent system installed according
or fl ammable materials, liquids or to local and state codes or, in the
vapors. absence of local and state codes,
✓ the “Na onal Fuel Gas Codeâ€, ANSI
Proper clearances from combus ble
Z223.1(NFPA 54)-current edi on.
surfaces maintained and suffi cient
22 • Residen al Standard Gas Water Heater Use and Care Guide
OPERATION
Ligh ng Instruc ons 3 Press the gas control knob in water heater. You may hear drips or a
fully and hold it in. While sizzling sound when the water heater is
WARNING! Explosion Hazard – holding in the gas control ï¬ rst lit or, you may see a small puddle on
Replace viewport if glass is missing or knob, repeatedly click the igniter bu on the fl oor. Condensa on is not a leak and
damaged. Failure to do so can result (approximately once per second) for up will go away once the tank reaches
in death, explosion or ï¬ re. to 90 seconds or un l the Status Light normal opera ng temperature.
starts to fl ash. You can tell the pilot is lit
Read and understand these direc ons The air ï¬ lter at the bo om of
when the Status Light fl ashes once 10
thoroughly before a emp ng to light the water heater must be
every three seconds.
or re-light the pilot. Make sure the cleaned from me to me. See
viewport is not missing or damaged. the Maintenance sec on for steps on
Make sure the tank is completely ï¬ lled cleaning the air ï¬ lter. If the air ï¬ lter is
with water before ligh ng the pilot. not cleaned as needed, the water
Check the data plate near the gas heater’s pilot may go out.
control valve to ensure the correct gas Shut down Instruc ons
type. Do not use this water heater with
any gas other than the one listed on the Turn the gas control/temperature knob
data plate. If you have any ques ons or counterclockwise to the “OFF†se ng.
doubts, consult your gas supplier or gas The status light will stop blinking and stay
u lity company. on for a short me a er the water heater
NOTICE! A newly installed water heater is turned off .
will have air in the gas line. It may take
several ligh ng a empts to clear all the Figure 34 - Status light. Emergency Shut down
air from the gas line and light the pilot. Once the Status Light starts
4 Should overhea ng occur or the gas
Follow these steps to light the pilot: fl ashing, release the gas
supply fail to shut off , turn off the water
control knob. Adjust the gas
Make sure the manual gas control knob to the desired tempera- heater’s manual gas control valve and call
1 valve for the water heater’s ture se ng. a qualiï¬ ed person.
supply line is ON.
If the Status Light doesn’t start Checking the Vent
5 fl ashing a er 90 seconds,
release the gas control knob System and Air Supply
and wait 10 minutes.
Once the water heater is lit and the gas
Repeat ligh ng steps 2 through control knob is set to the desired temper-
6 5 at least two addi onal mes ature, the burner will light (if the tank is
or un l the Status Light starts cold). Perform an air supply and vent test
fl ashing once every three seconds. Wait
Figure 32 - Gas valve in “on†position to make sure the unit is ven ng properly
10 minutes between ligh ng a empts.
Turn the gas control knob to and the air supply is adequate:
2 the PILOT posi on. A solid Status Light means the
7 pilot was lit but is now off . The main burner must be on
Release the gas control knob 1 for this test. With a newly
and wait 10 minutes. Once the Status installed water heater full of
Light goes out, repeat ligh ng steps 2 cold water, turning the temperature
through 5. control knob to HOT should cause the OPERATION
main burner to come on. You can view
If the Status Light doesn’t start
8 fl ashing a er three ligh ng the burner through the sight glass at
a empts, turn the gas control the base of the water heater.
knob to the OFF posi on and refer to Close all windows and doors
the “Troubleshoo ng-No Hot Water†2 and turn on all gas appliances
sec on (see page 25).
and air-moving devices (range
When a gas water heater is ï¬ rst hoods, bathroom exhaust fans, ceiling
Figure 33 - Gas control/valve. 9 lit and the tank is cold, conden- fans, etc.) in your home. Also, close any
sa on o en forms inside the ï¬ replace dampers.
Residen al Standard Gas Water Heater Use and Care Guide • 23
OPERATION
3 Allow the water heater’s main Temperature Control • “B†138°F
burner to operate for ï¬ ve • “C†147°F
minutes. Pass a newly ex n- System • “VERY HOT†160°F
guished match approximately one inch NOTICE: The temperatures above are
Adjus ng the Temperature
from the dra hood’s relief opening. approximates. The actual temperature
Smoke from the match should be With the installa on steps completed, of the heated water may vary.
steadily drawn into the opening indicat- you may adjust the water heater’s tem-
ing the water heater is ge ng adequate perature se ng if desired. 3 Wait for the water to heat up.
air and the vent system is working. If you have no hot water a er
Set the gas valve to the desired two hours, refer to the
1 temperature. The “HOTâ€
Troubleshoo ng Sec on (see page 25).
se ng sets the water tem-
NOTICE: If the tank is full of cold water,
perature to approximately 120°F,
condensa on may form inside the
reducing the risk of scald injury. You
water heater. This condensa on may
may wish to set a higher temperature to
drop on the burner causing a sizzling
provide hot water for automa c
sound. In some cases, you may see a
dishwashers or laundry machines, to
small puddle on the fl oor. Condensa-
provide more hot water capacity, and to
on is normal and should go away once
reduce bacterial growth. Higher tank
the tank reaches its normal opera ng
temperatures (140° F) kill bacteria that
Figure 35 - Test the air supply and vent to make procedure.
sure the water heater has adequate air and is cause a condi on known as “smelly
venting properly. water†and can reduce the levels of WARNING! If you have increased
bacteria that cause water-borne the temperature se ng and the
If the main burner has been
4 opera ng for ï¬ ve minutes but diseases. Thermosta c Mixing Valves are not set
the match smoke dri s around Water usage pa erns, as well as heat properly (or not installed) you could
or is blown away from the opening, turn scald yourself while checking the
from sources such as solar collectors,
the gas control knob OFF. Inspect the temperature.
ambient air, and the pilot light can
vent system and repair if necessary. In
result in temperatures higher than the Check water temperature at
many cases, failure to pass the air 4
thermostat set-point. several points of use in your
supply and vent test indicates the water
home (for example, bathtub
heater is not ge ng enough air or there WARNING! Higher temperatures
is a problem with the vent system. It increase the risk of scalding, but even at faucet, shower, or lavatory sink) and
may be necessary to increase the air adjust the Thermosta c Mixing Valves
120°F, hot water can scald (see Table 1).
supply by ge ng air from outside (see Install Thermosta c Mixing Valve(s) at as needed. If you aren’t sure how to
page 7). adjust the Thermosta c Mixing Valve
each point-of-use to reduce the risk of
se ngs, or aren’t sure if you have
WARNING! Burn Hazard. Do not scalding.
touch the vent, doing so can cause Thermosta c Mixing Valves, contact a
burns. If the dra hood does not draw 2 To adjust the water heater’s qualiï¬ ed person.
thermostat:
in smoke from a match a er ï¬ ve Opera ng Modes
minutes of main burner opera on,
shut the gas supply off , and do not The gas control valve has two diff er-
OPERATIONoperate the water heater un l the vent ent opera ng modes: Standard and
system and air supply have been Vaca on. The Standard mode allows
checked by a qualiï¬ ed person and you to adjust the water temperature
repaired if necessary. Con nuing to to your desired se ng. The Vaca on
operate the water heater in this
(VAC) mode sets the thermostat at
condi on could lead to serious injury Figure 36 - Adjust the gas control knob to “HOTâ€.
approximately 55°F and is recom-
or death from carbon monoxide Turn the gas control knob on the gas
mended when not using hot water for
poisoning. control valve to the right to the follow-
an extended period of me. The VAC
ing se ngs.
se ng also reduces energy losses and
• “A†128°F
24 • Residen al Standard Gas Water Heater Use and Care Guide
TROUBLESHOOTING
keeps the tank from freezing during Checking the Pilot Light hot water is simply not warm enough,
cold weather but can cause a Hydrogen 3 make sure the faucet you are checking
Check the spark igniter. Dim
gas build up. See cau on on page 6. doesn’t have a defec ve Thermosta c
the room lights and look through the
No Hot Water Mixing Valve. Many shower controls
viewport while clicking the igniter
now have built-in mixing valves. If
Use the following step-by-step plan bu on.
these devices fail, they can reduce the
as a guide to help determine why you If you don’t see a spark through the amount of hot water the shower or
have no hot water: viewport, check to make sure the faucet delivers even though there is
igniter wire is ï¬ rmly inserted into the plenty of hot water in the tank. Always
1 Check the Status Light
white connector. check the water temperature at several
The Status Light on the gas If you see a spark, make sure the gas faucets to make sure the problem is not
control valve fl ashes once every three supply valve is turned on, and try light- in a faucet or shower control.
seconds if the pilot is lit and the gas ing the pilot using the ligh ng instruc- Undersized Water Heater. If your water
control valve has not detected any ons on page 23. heater runs out of hot water quickly, it
problems.
If the pilot s ll does not light, call a may be too small for your needs. If the
qualiï¬ ed person. water heater is old, consider replacing it
with a larger model. If the water heater
Insuffi cient Hot Water is in good condi on, you may be able
to meet your family’s hot water needs
or Slow Hot Water
with the exis ng water heater by install-
Recovery ing Thermosta c Mixing Valves at each
point-of-use and then turning the gas
WARNING! Because of the increased
control knob to a higher se ng.
risk from scalding, if you set the water
heater’s gas control knob higher than You can also reduce your home’s hot
120°F, install Thermosta c Mixing water needs by washing clothes in cold
Valves at each point-of-use. Due to the water, installing fl ow restrictors on
Figure 37 - Status light. increased risk of scalding, do not set the shower heads, repairing leaky faucets,
If the Status Light is fl ashing once ev- temperature of the Thermosta c and taking other conserva on steps.
ery three seconds and you have no hot Mixing Valves above 120°F.
Reversed Connec ons or Melted Dip
water, make sure the gas control knob
If the hot water is simply not warm Tube. Check the hot and cold water
is set to HOT.
enough, there are several possible connec ons and make sure your
If the Status Light fl ashes more than
causes: home’s hot water pipe is connected
once every three seconds, refer to
to the hot water outlet on the water
the Status Light Code Troubleshoo ng • Faulty Thermosta c Mixing Valve
heater. Usually, reversed connec ons
Chart on page 27. in a faucet or shower control
are found soon a er the installa on
(check other faucets in the house
If the Status Light is not fl ashing, go to of a new unit. If copper pipes were
for hot water).
step 2. soldered while they were a ached to
• Water heater’s capacity too small
the water heater, the dip tube may
Status Light is Not (or usage too high).
2 have melted. The dip tube is a long,
Flashing • Reversed plumbing connec ons plas c tube inside the tank a ached to
If the Status Light isn’t fl ashing, try or melted dip tube (usually found the cold water inlet. If the dip tube has TROUBLESHOOTING
ligh ng the pilot using the ligh ng soon a er new installa on). melted, it can be replaced by removing
instruc ons on page 23. the cold water inlet connec on, re-
• Plumbing leak.
moving the old dip tube and installing
If you have tried ligh ng the pilot and the
• Sediment or lime build up in the a new one.
Status Light does not fl ash, go to step 3.
bo om of the tank.
Plumbing Leak. Even a small leak
If the Status Light fl ashes, go to Step 1.
Thermosta c Mixing Valves. If the in the hot water side of the home’s
Residen al Standard Gas Water Heater Use and Care Guide • 25
TROUBLESHOOTING
plumbing system can make it appear Drips from T&P Relief allowing small quan es of water to
that the water heater is producing fl ush out the debris. See the label on
li le to no hot water. In this case, the Valve Discharge Pipe the T&P Relief Valve for instruc ons.
burner will be on all or almost all the A small amount of water dripping WARNING! When manually
me, yet you will have very li le hot from the Temperature and Pressure opera ng the temperature-pressure
water. Locate and repair the leak. (T&P) Relief Valve usually means the relief valve, make sure that no one is
home’s water pressure is too high in front of or around the discharge
Sediment or Lime in Tank. With an ex-
and/or you need a Thermal Expan- outlet. The water may be extremely
is ng water heater, if you have some
sion Tank. See Step 1 in the Installa- hot and could cause severe burns.
hot water but not as much as you’re
used to, there may be a build up of on sec on of this manual for more Also ensure that the water discharge
sediment or lime on the bo om of the informa on. will not cause property damage.
tank. Sediment or lime build up can A large amount of hot water coming If the water pressure is between 50
reduce the effi ciency of your water from the T&P discharge pipe may be and 60 psi, a Thermal Expansion Tank
heater. Heavy deposits can damage due to the tank overhea ng. If the is installed and properly pressurized,
the water heater. See the Mainte- T&P relief valve is discharging large and the valve has been cleared of any
nance sec on for steps on draining amounts of very hot water, turn the debris, and it s ll drips, the valve may
and fl ushing the water heater. gas supply valve off and call a quali- be broken—have a qualiï¬ ed person
ï¬ ed person. replace the T&P Relief Valve.
Temperature Too High
WARNING! Do not cap or plug the Water Odor
Adjust the thermostat on the water
T&P Relief Valve or discharge pipe,
heater to a lower se ng. Install or Harmless bacteria normally present in
and do not operate the water heater
adjust Thermosta c Mixing Valves tap water can mul ply in water heat-
without a func oning T&P Relief
for each point-of-use (see the valve ers and give off a “ro en egg†smell.
Valve—this could cause an explosion.
manufacturer’s instruc ons). Although elimina ng the bacteria that
Water Pressure too High. High water
causes “smelly water†is the only sure
Low Water Pressure pressure can cause the T&P Relief
treatment, in some cases, the stan-
Valve to drip. Install a Pressure Re-
Check both the cold and hot water dard anode rod that came with your
ducing Valve (PRV) on the main cold
at a sink to determine if the lower water heater can be replaced with a
water supply line. Adjust the PRV to
pressure is only on the hot water side. special zinc anode rod which may help
between 50 and 60 psi.
If both hot and cold faucets have low reduce or eliminate the odor. Contact
pressure, call your local water u lity. Thermal Expansion Tank. Install a a qualiï¬ ed person.
If the low pressure is only on the hot Thermal Expansion Tank. If a Thermal
NOTICE: To protect the tank, an anode
water side, the primary causes are: Expansion Tank is already installed
rod must be installed in the water
and the T&P Relief Valve discharge
• Melted heat traps or dip tube. Sol- heater at all mes or the warranty is
pipe drips, the home’s water pressure
dering copper pipes while they are void.
may be too high or the Thermal Ex-
connected to the water heater can In cases where the “ro en egg†smell
pansion Tank may be defec ve. Refer
melt the heat traps inside the hot is very strong, you could increase the
to the instruc ons that came with
and cold water connec ons or the tank temperature to 140°F in order to
the Thermal Expansion Tank for more
dip tube (cold water side). Melted reduce bacterial growth in the tank.
informa on.
heat traps or a melted dip tube
TROUBLESHOOTINGcan restrict the fl ow of hot water. Debris. In rare cases, debris can s ck WARNING! Because higher
If that’s the case, replace the heat inside the T&P Relief Valve preven ng temperatures increase the risk of
traps or dip tube. the valve from sealing fully. In that scalding, if you set the thermostat(s)
• Par ally closed supply valve. Open case, the T&P Relief Valve discharge higher than 120°F, Thermosta c
the water heater’s supply valve fully. pipe will drip. You may be able to Mixing Valves at each point-of-use
clear debris from the T&P Relief Valve are par cularly important.
by manually opera ng the valve,
26 • Residen al Standard Gas Water Heater Use and Care Guide
TROUBLESHOOTING
TROUBLESHOOTING
Residen al Standard Gas Water Heater Use and Care Guide • 27
MAINTENANCE
Rou ne Maintenance 3 Open a hot water faucet and 8 Remove and inspect the
let the hot water run un l it is anode rod and replace if
Rou ne maintenance will help your
cool (This may take 10 min depleted. The anode rod
water heater last longer and work bet-
utes or longer). requires a 1-1/16†socket.
ter. If you can’t perform these rou ne
maintenance tasks yourself, contact a
qualiï¬ ed person.
Draining and Flushing the
Water Heater
Tap water contains minerals that can
form sediment in the bo om of the
tank. The amount of sediment formed
depends on the hardness of your tap Figure 41 - Let the hot water run until it is cool.
water, the temperature se ngs, and
WARNING! Be sure the water runs
other variables. We recommend drain-
cool before draining the tank to
ing and fl ushing the water heater a er
reduce the risk of scalding.
the ï¬ rst six months of opera on to de-
Connect a garden hose to the
termine the amount of sediment build 4 Figure 43 - Anode rods from new (top) to par-
drain valve and place the tially depleted (middle) to fully depleted stage
up. If there is li le sediment, drain and
other end of the hose in a (bottom).
fl ush the tank annually. If there is a lot
of sediment, drain and fl ush the tank drain, outside, or in buckets. Note that Anode Rod. The anode rod is a sacriï¬ -
sediment in the bo om of the tank cial metal rod that helps avoid corro-
more o en. Draining sediment extends
may clog the valve and prevent it from sion and premature failure (leaks) in
the life of the water heater.
draining. If you can’t get the tank to the tank. The anode rod is a consum-
To Drain and Flush the Tank: drain, contact a qualiï¬ ed person. able item. Inspect the anode rod a er
the ï¬ rst six months of opera on when
Turn the gas control knob on Turn the cold water supply
1 5 you drain and fl ush the tank. Replace
the gas control valve to the valve OFF.
the anode rod if it is substan ally worn
OFF posi on.
Open the drain valve on the out or depleted. Therea er, inspect the
6 water heater. anode rod annually or more frequently
if needed. If you use a water so ener,
your anode rod will deplete faster than
Figure 42 - Draining the water heater. normal. Inspect the anode rod more
frequently, replacing the anode rod
Also open a hot water faucet
7 if it is depleted. Obtain a new anode
to help the water in the tank
rod from Lowe’s® or have a qualiï¬ ed
drain faster.
person replace it. (Anode rods are a
consumable item and are not covered
under warranty).
If a large amount of sediment
Figure 40 - Turn gas control/temperature knob 9 was present when the tank
OFF. was drained, fl ush the tank by
Turn the manual gas valve for opening the cold water supply valve
2 the water heater’s supply line
and le ng the water run un l no more
OFF. sediment drains from the tank. Close
the drain valve when you are done.
MAINTENANCE 28 • Residen al Standard Gas Water Heater Use and Care Guide
MAINTENANCE
Reï¬ ll the tank by opening the discharge pipe, turn the gas control
10 cold water supply valve. Make knob to the OFF posi on and call a
sure a hot water faucet is open qualiï¬ ed person to determine the
and the drain valve is closed. Allow a cause.
hot water faucet to run full for at least
• At least every ï¬ ve years, have a
three minutes to make sure the tank Figure 44 - Burner Flames qualiï¬ ed person inspect the T&P
has all the air removed and is complete- • Leaking or damaged water and gas Relief Valve and discharge pipe.
ly full of water. Once you are certain the piping. Damage caused by corrosive water
tank is completely full of water, close
• Remove any fl ammable, corrosive condi ons, mineral deposits, or
the hot water faucet.
or combus ble materials near the other problems can only be de-
water heater. termined when a qualiï¬ ed person
Relight the pilot using the
11 removes and inspects the valve
instruc ons on page 23 and If you lack the necessary skills required
and its components.
adjust the gas control knob to to properly perform this visual inspec-
the desired temperature. It may take an on or if the burner needs to be cleaned, A dripping T&P Relief Valve is usually
hour or more for the tank of cold water get help from a qualiï¬ ed person. caused by the home’s water pressure
to heat up. being too high or the lack of a Thermal
T&P Relief Valve Maintenance Expansion Tank. If your T&P Relief Valve
Visual Inspec on
drips, see page 26.
On an annual basis, visually inspect the
A T&P relief valve that has been al-
ven ng and air supply system, piping
lowed to drip for an appreciable period
systems, main burner, pilot burner, and
of me should be inspected for mineral
the air ï¬ lter.
buildup. See T&P relief valve tag for
Check the water heater for the following: more informa on.
• Obstruc ons, damage, or deterio- Inspect and Clean the Air Filter
ra on in the ven ng system. Make Figure 45 - T&P Relief Valve.
Read and follow the opera ng and an-
sure the ven la on and combus-
nual maintenance instruc ons provided
on air supplies are not obstruct-
by the manufacturer of the T&P Relief
ed. Check the air ï¬ lter for dust or
Valve (yellow label a ached to T&P
other debris and clean if needed.
Relief Valve). Minerals in the water can
• Build up of soot and carbon on the
form deposits that cause the valve to
main burner and pilot burner. The
s ck or create blocked passages, mak-
burner may be cleaned with soap
ing the T&P Relief Valve inopera ve.
and hot water.
Follow these guidelines:
• Inspect the burner fl ames through • At least annually, operate the T&P
the viewport and compare them Relief Valve manually to ensure the Figure 46 - Clean air filter periodically.
to the drawing below. A properly waterways are clear and the valve
An air ï¬ lter should be installed around
opera ng burner should produce a mechanism moves freely (above).
the base of the water heater. At least
so blue fl ame. Blue ps with yellow Before opera ng the valve manually,
annually inspect the air ï¬ lter and check
inner cones are sa sfactory. The ps check that it will discharge in a place
for a build-up of dust or debris.
of the fl ame may have a slight yellow for secure disposal.
Vacuum the ï¬ lter to remove any dust
nt. The fl ame should not be all
WARNING! Hot water will be or debris. If an oily residue is present
yellow or have a sharp blue-orange
released. Before opera ng the T&P on the ï¬ lter, wash it in soap and water,
color. Contaminated air may cause
relief valve manually, check that it will then dry the ï¬ lter.
an orange colored fl ame. Contact a
discharge in a safe place. If water does
qualiï¬ ed technician if the fl ame is
not fl ow freely from the end of the
not sa sfactory.
Residen al Standard Gas Water Heater Use and Care Guide • 29 MAINTENANCE
MAINTENANCE
Removing and Replacing the gas control valve/thermostat. NOTE:
Gas Control Valve/Thermostat L.P. Gas systems use reverse (le -hand)
threads on the manifold tube.
IMPORTANT: The gas control valve/
thermostat is a standard valve with
wire leads that connect to a thermal
switch.
Removing the Gas Control Valve/ Figure 56 - Gas control/valve with threaded pipe.
Thermostat: Replacing Gas Control Valve/Thermostat:
Turn the gas control/tem- To replace the gas control valve/thermo-
1 perature knob to the “OFF†B stat, reassemble in reverse order. When
posi on. C D replacing the gas control valve/
A thermostat, thread a 4†sec on of gas
pipe into the inlet and use it to turn the
Figure 52 - Gas valve connections.
gas control valve/thermostat (clockwise.)
Disconnect the ground joint
5 DO NOT OVER TIGHTEN, damage may
union in the gas piping.
result.
Disconnect the remaining
• Be sure to use approved Tefl on® tape
pipe from the gas control valve/
or pipe joint compound on the gas piping
thermostat.
connec ons and ï¬ ng on
the back of the gas control valve that
screws into tank.
Figure 48 - Gas control/valve. • Be sure to remove the pilot ferrule nut
Turn off the gas at the
2 from the new gas control valve/thermo-
manual shut-off valve on the
stat.
gas supply pipe.
Figure 54 - Ground joint union connection.
Figure 58 - Gas valve in “on†position.
To remove the gas control
• Turn the gas supply on and check for
Figure 50 - Gas valve in “off†position. 6
valve/thermostat, thread a 4â€
leaks. Test the water heater by brushing
Drain the water heater. Refer
sec on of gas pipe into the
3 to the “Draining and Flushing on an approved noncorrosive
inlet and use it to turn the FVIR Safety
leak detec on solu on. Bubbles forming
the Water Heater†sec on (see
System Opera onal Checklist TROU-
indicate a leak. Correct any leak found.
page 28) and follow the procedure.
BLESHOOTING CHART gas control
• Be sure tank is completely ï¬ lled with
valve/thermostat (counterclockwise.)
water before ligh ng and ac va ng the
Disconnect the A igniter
Do not use pipe wrench or equivalent
4 wire from the igniter lead water heater. Follow the
to grip body. Damage may result,
“Ligh ng Instruc ons†on page 23.
wire. Use needle nose pliers
causing leaks. Do not insert any sharp
• If addi onal informa on is required,
to disconnect the B red (+) and white
objects into the inlet or outlet connec-
contact the Service Department at: 1-
(-) thermopile wires. Disconnect C
ons. Damage to the gas control valve/
877-817-6750.
pilot tube (7/16†wrench) and
thermostat may result.
D manifold tube (3/4†wrench) at the
MAINTENANCE 30 • Residen al Standard Gas Water Heater Use and Care Guide
NOTES
NOTES
Residen al Standard Gas Water Heater Use and Care Guide • 31
NOTES
NOTES
32 • Residen al Standard Gas Water Heater Use and Care Guide
NOTES
NOTES
Residen al Standard Gas Water Heater Use and Care Guide • 33
NOTES
NOTES
34 • Residen al Standard Gas Water Heater Use and Care Guide
REPAIR PARTS
Replacement parts may be ordered through your plumber or REPAIR PARTS LIST
the local distributor. Parts will be shipped at prevailing prices
Item
and billed accordingly. Parts Description
No.
NOTICE: When ordering replacement parts, have the following 1 DRAFT HOOD
informa on ready: 2 REDUCER RING - SOME MODELS (NOT SHOWN)
3 FLUE BAFFLE (NOT SHOWN)
• Model and serial number
4 COMBINATION DIP TUBE/HEAT TRAP NIPPLE
• Type of gas used
• Item number 5 HEAT TRAP/NIPPLE
• Parts descrip on 6 ANODE ROD - SOME MODELS
7 COMBINATION HEAT TRAP NIPPLE/ANODE
- SOME MODELS
Legend 8 TEMPERATURE & PRESSURE RELIEF VALVE
(LOCATED TOP OR SIDE)
â–² Special anode rod (see page 26) 9 DRAIN VALVE
10 GAS CONTROL VALVE/THERMOSTAT
â– Temperature and Pressure Relief Valve is required but may (with thermal switch wire lead)
be factory installed 11 OUTER DOOR
12 PILOT/THERMOPILE ASSEMBLY KIT
★ Unique: Flammable Vapor Igni on Resistant Safety System
parts 13 FINAL BURNER ASSEMBLY
14 MANIFOLD DOOR GASKET
15 WRAP AROUND AIR FILTER
Residen al Standard Gas Water Heater Use and Care Guide • 35 REPAIR PARTS
REPAIR PARTS
Listed Parts Kits and Illustrations
Item 12: Pilot assembly kit, which contains the pilot assembly, thermopile, and retainer clip (Natural Gas or L.P.)
Item 13: Final burner assembly which contains the burner, orifice, manifold tube, gasket, door, pilot tube, thermopile,
manifold component block with retainer clip, thermal switch, and pilot assembly. (Natural Gas/Low Nox or L.P.)
Item 14: Contains manifold door gasket
Item #12 Item #13 (Natural Burner)
Item #13 (L.P. Burner) Item #14
®Tefl on is a registered trademark of E.I. Du Pont De Nemours and Company
A.O. Smith Corporation. All Rights Reserved.
Limited Warranty provided by Manufacturer.
REPAIR PARTS 36 • Residen al Standard Gas Water Heater Use and Care Guide
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