Lochinvar RESIDENTIAL GAS WATER HEATERS User manual

1
Instruction Manual
PRINTED0409 315628-000
KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE
WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.
NOT FOR USE IN MANUFACTURED (MOBILE) HOMES
ALLTECHNICALANDWARRANTYQUESTIONS: SHOULDBEDIRECTEDTOTHELOCALDEALERFROMWHOMTHEWATERHEATERWAS
PURCHASED. IFYOUARE UNSUCCESSFUL, PLEASE WRITE TO THE COMPANYLISTED ON THE RATING PLATE ON THEWATER HEATER.
RESIDENTIAL GAS WATER HEATERS
• For Your Safety •
AN ODORANT ISADDED TO THE GAS USED
BY THIS WATER HEATER.

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SAFE INSTALLATION, USE AND SERVICE
Your safety and the safety of others is extremely important in the installation, use and servicing of this water heater.
Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and
others of a potential injury hazard. Read and obey all safety messages and instructions throughout this manual. It is very important
that the meaning of each safety message is understood by you and others who install, use or service this water heater.
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible
injury or death.
All safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety message and
how to avoid the risk of injury.
The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of substances
known to the State of California to cause cancer, birth defects, or other reproductive harm, and requires businesses to warn of
potential exposure to such substances.
WARNING: This product contains a chemical known to the State of California to cause cancer, birth defects, or other reproductive
harm.
This appliance can cause low-level exposure to some of the substances included in the Act.
IMPORTANT DEFINITIONS
•Qualified Installer: Aqualifiedinstaller musthaveability equivalentto alicensedtradesman inthe fieldsof plumbing,
air supply, venting and gas supply, including a thorough understanding of the requirements of the National Fuel Gas
Code as it relates to the installation of gas fired water heaters. The qualified installer must have a thorough
understanding of this instruction manual.
•ServiceAgency: Aserviceagencyalsomust haveability equivalentto alicensed tradesmanin thefieldsof plumbing,
air supply, venting and gas supply, including a thorough understanding of the requirements of the National Fuel Gas
Code as it relates to the installation of gas fired water heaters. The service agency must also have a thorough
understandingofthis instructionmanual,and beabletoperformrepairsstrictly inaccordancewith theserviceguidelines
provided by the manufacturer.
•Gas Supplier: The Natural Gas or Propane Utility or service which supplies gas for utilization by the gas burning
applianceswithinthis application.Thegas supplier typicallyhas responsibility forthe inspection andcode approval of
gas piping up to and including the Natural Gas meter or Propane storage tank of a building. Many gas suppliers also
offer service and inspection of appliances within the building.
DANGER
WARNING
CAUTION
DANGER indicates an imminently
hazardous situation which, if not avoided,
will result in death or injury.
WARNINGindicatesa potentiallyhazardous
situation which, if not avoided, could result
in death or injury.
CAUTION indicatesapotentially hazardous
situation which, if not avoided, could result
in minor or moderate injury.
CAUTION used without the safety alert
symbol indicates a potentially hazardous
situation which, if not avoided, could result
in property damage.
CAUTION

3
GENERAL SAFETY

4
SAFEINSTALLATION,USEANDSERVICE ..................................2
GENERALSAFETY ....................................................................3
TABLEOFCONTENTS ...............................................................4
INTRODUCTION .........................................................................4
Preparingforthe NewInstallation ......................................4
TYPICALINSTALLATION ......................................................... 5,6
LOCATINGTHENEWWATERHEATER .....................................7-9
Factsto ConsiderAboutLocation ...................................7,8
InsulationBlankets ............................................................. 8
CombustionAirandVentilation forAppliances
LocatedinUnconfined Spaces ..........................................8
CombustionAirandVentilation forAppliances
LocatedinConfined Spaces ........................................... 8,9
INSTALLINGTHENEWWATERHEATER ..............................10-14
WaterPiping ............................................................... 10,11
Temperature-Pressure ReliefValve .................................. 11
FillingtheWaterHeater ....................................................12
Venting ....................................................................... 12,13
GasPiping .................................................................. 13,14
SedimentTraps ............................................................... 14
LIGHTING&OPERATINGINSTRUCTIONS ............................. 15,16
TEMPERATUREREGULATION ...................................................17
FORYOURINFORMATION .................................................. 17,18
StartUpConditions ..................................................... 17,18
DraftHoodOperation .................................................... 17
Condensation .......................................................... 17,18
Smoke/Odor ..................................................................18
ThermalExpansion .......................................................18
Strange Sounds ............................................................18
OperationalConditions ..................................................... 18
SmellyWater ................................................................18
“Air” in Hot Water Faucets ............................................18
HighTemperatureShut Off System ...............................18
PERIODICMAINTENANCE ....................................................19-21
VentingSystemInspection ...............................................19
BurnerInspection ............................................................19
BurnerCleaning ............................................................... 19
Housekeeping ............................................................. 19,20
AnodeRodInspection......................................................20
Temperature-Pressure ReliefValve Operation ..................20
DrainingandFlushing.......................................................20
DrainValveWasherReplacement ....................................20
Service............................................................................21
LEAKAGECHECKPOINTS ........................................................ 21
REPAIRPARTS ........................................................................22
TROUBLESHOOTINGGUIDELINES ............................................23
WARRANTY....................................................................... Insert
Thank You for purchasing this water heater. Properly installed and
maintained,itshouldgive you yearsoftroublefreeservice.
AbbreviationsFoundInThisInstructionManual:
• UL - Underwriters Laboratories Inc.
• ANSI - American National Standards Institute
• NFPA- National Fire ProtectionAssociation
• ASME - American Society of Mechanical Engineers
• GAMA - GasAppliance Manufacturer’s Association
• CAN - Canada
• EPACT - Energy PolicyAct
• CSA - Canadian Standards Association
This gas-fired water heater is design certified by Underwriters
Laboratories Inc. under American National Standard/CSA Standard
for Gas Water HeatersANSI Z21.10.3 • CSA 4.3 (current edition).
PREPARING FOR THE INSTALLATION
1. Read the “General Safety” section, page 3 of this manual first and
thentheentire manualcarefully. If youdon’tfollowthe safetyrules,
the water heater will not operate properly. It could cause DEATH,
SERIOUSBODILYINJURYAND/ORPROPERTYDAMAGE.
This manual contains instructions for the installation, operation, and
maintenanceofthegas-firedwaterheater. Italsocontainswarnings
throughoutthemanualthatyoumustreadandbeawareof. Allwarnings
andallinstructionsareessential to theproperoperationofthe water
heater and your safety. Since we cannot put everything on the first
fewpages,READTHEENTIREMANUALBEFOREATTEMPTINGTO
INSTALLOROPERATETHEWATERHEATER.
2. The installationmustconformwith these instructionsandthelocal
code authority having jurisdiction. In the absence of local codes,
installations shall comply with the National Fuel Gas Code ANSI
Z223.1/NFPA54current addition.Thispublicationisavailablefrom
theCSAInternational,8501EastPleasantValleyRd.,ClevelandOhio
44131,orTheNationalFire ProtectionAssociation, 1Batterymarch
Park, Quincy, MA 02269.
3. If after reading this manual you have any questions or do not
understandanyportionoftheinstructions, call the local gas utility
or the manufacturer whose name appears on the rating plate.
4. Carefully plan the place where you are going to put the water
heater. Correct combustion,ventaction,and ventpipeinstallation
are very important in preventing death from possible carbon
monoxide poisoning and fires, see Figures 3 and 8.
Examine the location to ensure the water heater complies with
the “Locating the New Water Heater” section in this manual.
5. ForCaliforniainstallationthiswaterheatermustbebraced,anchored,
or strapped to avoid falling or moving during an earthquake. See
instructions for correct installation procedures. Instructions may be
obtained from California Office of the State Architect, 400 P Street,
Sacramento, CA 95814.
6. Massachusetts Code requires this water heater to be installed in
accordance with Massachusetts 248-CMR 2.00: State Plumbing
Code and 248-CMR 5.00.
7. ComplieswithSCAQMDrule#1146.2anddistrictshavingequivalent
NOxrequirements.
INTRODUCTION
TABLE OF CONTENTS

5
TYPICAL INSTALLATION
GET TO KNOW YOUR WATER HEATER - GAS MODELS
A Vent Pipe
B Drafthood
C Anode
D Hot Water Outlet
E Outlet
F Insulation
G Gas Supply
H Manual Gas Shut-off Valve
FIGURE 1.
I Ground Joint Union
J Drip Leg (Sediment Trap)
K Inner Door
L Outer door
M Union
N Inlet Water Shut-off Valve
O Cold Water Inlet
P Inlet Dip Tube
Q Temperature-Pressure Relief Valve
R Rating Plate
S Flue Baffle(s)
T Gas Control Valve/Thermostat
U Drain Valve
V Pilot and Main Burner
W Flue
X Metal Drain Pan
(V) PILOT & MAIN BURNER - NATURAL GAS
(T) GASCONTROLVALVE/THERMOSTAT
MAIN
BURNER
THERMOCOUPLE
PILOT
BURNER
(V) PILOT & MAIN BURNER - PROPANE GAS
**CLOSED WATER SYSTEMS ARE THOSE
WITH BACK FLOW PREVENTION DEVICES
INSTALLED IN THE WATER SERVICE LINE.
* INSTALL IN ACCORDANCE WITH
LOCAL CODES.
* DRIP LEG AS REQUIRED BY
LOCAL CODES.
* ALL PIPING MATERIALS TO BE
SUPPLIED BY CUSTOMERS.

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TYPICAL INSTALLATION
FIGURE 2.
MIXING VALVE USAGE
ThisappliancehasbeendesigncertifiedascomplyingwithANSIZ21.10.3
currenteditionforwaterheatersandisconsideredsuitablefor:
Water (Potable) Heating and Space Heating: All models are
considered suitable for water (potable) heating and space heating.
HOTTERWATERCANSCALD:
Water heaters are intended to produce hot water. Water heated to
a temperature which will satisfy space heating, clothes washing,
dishwashing,andothersanitizingneeds can scald and permanently
injure you upon contact. Some people are more likely to be
permanently injured by hot water than others. These include the
elderly, children, the infirm, or physically/mentally handicapped. If
anyone using hot water in your home fits into one of these groups
or if there is a local code requiring a certain temperature water at
thehotwatertap, then you musttake special precautions. Inaddition
to using the lowest possible temperature setting that satisfies your
hotwaterneeds,ameanssuchasa *Mixing Valveshould be used at
the hot water taps used by these people or at the water heater.
Mixing valves are available at plumbing supply or hardware stores.
Consult a qualified installer or service agency. Follow mixing valve
manufacturer’s instructions for installation of the valves. Before
changing the factory setting on the thermostat, read the
“Temperature Regulation” section in this manual, see Figures 15
and 16.

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FACTSTOCONSIDERABOUTTHE LOCATION
Carefullychoosean indoorlocationforthenewwaterheater,because
the placement is a very important consideration for the safety of the
occupants in the building and for the most economical use of the
appliance. This water heater is not for use in manufactured
(mobile) homes or outdoor installation.
Whether replacing an old water heater or putting the water heater in
a new location, the following critical points must be observed:
1. Select a location indoors as close as practical to the gas vent or
chimneytowhichthewater heater vent is goingtobeconnected,
and as centralized with the water piping system as possible.
2. Selected locationmustprovideadequate clearances forservicing
and proper operation of the water heater.
Installationofthewater heatermust beaccomplishedinsuchamanner
that if the tank or any connections should leak, the flow will not cause
damagetothestructure.Forthisreason, itisnotadvisabletoinstallthe
waterheaterinan atticorupperfloor.Whensuchlocations cannot be
avoided,asuitablemetaldrainpanshouldbeinstalledunderthe water
heater. Metal drain pans are available at your local hardware store.
Suchametaldrainpanmusthaveaminimumlengthandwidthofatleast
2”(51mm)greaterthanthewaterheaterdimensionsandmustbepiped
toanadequatedrain.The panmust notrestrictcombustionairflow.
Water heater life depends uponwaterquality,waterpressureandthe
environment in which the water heater is installed. Water heaters are
sometimesinstalled inlocationswhere leakagemayresult inproperty
damage, even with the use of a drain pan piped to a drain. However,
unanticipateddamage canbereducedorprevented byaleakdetector
or water shut-off device used in conjunction with a piped drain pan.
Thesedevicesare availablefromsomeplumbing supplywholesalers
and retailers, and detect and react to leakage in various ways:
• Sensors mounted in the drain pan that trigger an alarm or turn off
the incoming water to the water heater when leakage is detected.
• Sensors mounted in the drain pan that turn off the water supply
to the entire home when water is detected in the drain pan.
• Water supply shut-off devices that activate based on the water
pressure differential between the cold water and hot water pipes
connected to the water heater.
• Devices that will turn off the gas supply to a gas water heater
while at the same time shutting off its water supply.
LOCATING THE NEW WATER HEATER
INSTALLATIONS IN AREAS WHERE FLAMMABLE LIQUIDS
(VAPORS) ARE LIKELY TO BE PRESENT OR STORED
(GARAGES, STORAGEAND UTILITYAREAS, ETC.):Flammable
liquids (such as gasoline, solvents, propane [LP or butane, etc.] and
other substances such as adhesives, etc.) emit flammable vapors
whichcanbe ignitedbyagas waterheater’s pilotlightor mainburner.
The resulting flashback and fire can cause death or serious burns to
anyone in the area, as well as property damage. If installation in such
areas is your only option, then the installation must be accomplished
in a way that the pilot flame and main burner flame are elevated from
the floor at least 18 inches. While this may reduce the chances of
flammable vapors, from a floor spill being ignited, gasoline and other
flammable substances should never be stored or used in the same
room or area containing a gas water heater or other open flame or
spark producing appliance.NOTE:Flammablevaporsmaybe drawn
by air currents from other areas of the structure to the appliance.
Also, the water heater must be located and/or protected so it is not
subject to physical damage by a moving vehicle.
Thiswaterheatermustnotbeinstalleddirectlyoncarpeting. Carpeting
must be protected by metal or wood panel beneath the appliance
extending beyond the full width and depth of the appliance by at least
3” (76.2 mm) in any direction, or if the appliance is installed in an
alcoveorcloset, theentirefloor mustbecovered bythepanel. Failure
to heed this warning may result in a fire hazard.

8
Minimumclearancesbetweenthewaterheaterandcombustiblematerials
are0inchatthesidesandrear,4”(102mm)atthefront,and6”(153mm)
fromtheventpipe. Clearancefromthetopofthejacketis12”(305mm)
onmostmodels. Notethatalesserdimensionmaybeallowedonsome
models,referto thelabelattachedadjacenttothegascontrolvalveon
thewaterheater,see Figure3.
FIGURE3.
Agaswaterheatercannotoperateproperlywithoutthecorrectamountof
air for combustion. Do not install in a confined area such as a closet,
unlessyouprovideairasshowninthe“LocatingTheNewWaterHeater”
section. Never obstruct the flow of ventilation air. If you have any
doubts or questions at all, call your gas supplier. Failure to provide the
proper amount of combustion air can result in a fire or explosion and
cause death, serious bodily injury, or property damage.
FIGURE 4.
Ifthiswaterheaterwillbeusedinbeautyshops,barbershops,cleaning
establishments,orself-service laundrieswithdry cleaningequipment,
it is imperative that the water heater or water heaters be installed so
thatcombustionand ventilationairbe takenfromoutside theseareas.
Propellants of aerosol sprays and volatile compounds, (cleaners,
chlorinebasedchemicals, refrigerants,etc.) inadditionto beinghighly
flammableinmanycases,will also change tocorrosivehydrochloric
acid when exposed to the combustion products of the water heater.
The results can be hazardous, and also cause product failure.
INSULATIONBLANKETS
Insulationblankets areavailabletothe generalpublicfor external use
ongaswaterheatersbutare not necessary with theseproducts. The
purpose of an insulation blanket is to reduce the standby heat loss
encountered with storage tank heaters. Your water heater meets or
exceedstheEPACTstandardswith respect toinsulationandstandby
loss requirements, making an insulation blanket unnecessary.
Should you choose to apply an insulation blanket to this heater, you
should follow these instructions (For identification of components
mentioned below, see Figure 1). Failure to follow these instructions
can restrict the air flow required for proper combustion, potentially
resulting in fire, asphyxiation, serious personal injury or death.
•Do not apply insulation to the top of the water heater, as this will
interfere with safe operation of the draft hood.
•Donotcoverthe outerdoor,thermostat ortemperature& pressure
relief valve.
•Do not allow insulation to come within 2" (50.8 mm) of the floor to
prevent blockage of combustion air flow to the burner.
•Do not cover the instruction manual. Keep it on the side of the
water heater or nearby for future reference.
•Doobtain newwarning andinstructionlabelsfromthemanufacturer
for placement on the blanket directly over the existing labels.
•Do inspect the insulation blanket frequently to make certain it
does not sag, thereby obstructing combustion air flow.
COMBUSTIONAIRAND VENTILATION FOR
APPLIANCESLOCATEDIN UNCONFINED SPACES
UNCONFINED SPACE is space whose volume is not less than
50cubicfeetper 1,000Btuperhour (4.8 m3perkW)ofthe aggregate
input rating of all appliances installed in that space. Rooms
communicating directly with the space in which the appliances are
installed,throughopeningsnotfurnished with doors, areconsidered
a part of the unconfined space.
Inunconfinedspacesinbuildings,infiltrationmaybeadequatetoprovide
air for combustion, ventilation and dilution of flue gases. However, in
buildings of tight construction (for example, weather stripping, heavily
insulated, caulked, vapor barrier, etc.), additional air may need to be
providedusingthemethodsdescribedin“CombustionAirandVentilation
for Appliances Located in Confined Spaces.”
COMBUSTIONAIRAND VENTILATION FOR
APPLIANCESLOCATEDIN CONFINED SPACES
CONFINED SPACE is a space whose volume is less than 50 cubic
feet per 1,000 Btu per hour (4.8 m3per kW) of the aggregate input
rating of all appliances installed in that space.

9
A. ALL AIRFROM INSIDEBUILDINGS: (SeeFigures4and5)
Theconfinedspaceshallbeprovidedwithtwopermanent openings
communicatingdirectlywith anadditionalroom(s) ofsufficient volume
so that the combined volume of all spaces meets the criteria for an
unconfined space. The total input of all gas utilization equipment
installed in the combined space shall be considered in making this
determination. Each opening shall have a minimum free area of
one square inch per 1,000 Btu per hour (22 cm2/kW) of the total
input rating of all gas utilization equipment in the confined space,
but not less than 100 square inches (645 cm2). One opening shall
commencewithin12”(30 cm) of thetopandone commencing within
12” (30 cm) of the bottom of the enclosures.
FIGURE 5.
B. ALLAIR FROM OUTDOORS: (See Figures 6, 7 and 8)
The confined space shall be provided with two permanent openings,
one commencing within 12” (30 cm) of the top and one
commencing within 12” (30 cm) from the bottom of the enclosure.
Theopenings shallcommunicatedirectly,orbyducts,withtheoutdoors
or spaces (crawl or attic) that freely communicate with the outdoors.
1. When directly communicating with the outdoors, each opening shall
have a minimum free area of 1 square inch per 4,000 Btu per hour
(5.5 cm2/kW) of total input rating of all equipment in the enclosure, see
Figure 6.
FIGURE 6.
2. Whencommunicatingwiththeoutdoorsthroughverticalducts,each
openingmusthave a minimumfreearea of 1squareinch per4,000
Btu per hour (5.5 cm2/kW) of total input rating of all equipment in
the enclosure, see Figure 7.
3. When communicatingwiththeoutdoorsthrough horizontalducts,
each opening shall have a minimum free area of 1 square inch
per 2,000 Btu per hour (11 cm2/kW)) of total input rating of all
equipment in the enclosure, see Figure 8.
FIGURE 7.
4. When ducts are used, they shall be of the same cross-sectional
area as the free area of the openings to which they connect.
The minimum short side dimension of rectangular air ducts shall
not be less than 3” (76.2 mm), see Figure 8.
5. Alternatively a single permanent opening may be used when
communicatingdirectlywiththeoutdoors,or withspaces thatfreely
communicatewiththeoutdoors.Theopeningshallhavea minimum
freeareaof1square inch per 3,000 BTUperhour(8.3cm2/kW)of
total input rating of all equipment in enclosure. See Figure 8A.
FIGURE 8.
6. Louvers and Grilles: In calculating free area, consideration shall be
given to the blocking effect of louvers, grilles or screens protecting
openings. Screens used shall not be smaller than 1/4 inch (6.4 mm)
mesh. If the free area through a design of louver or grille is known, it
should be used in calculating the size opening required to provide the
freeareaspecified. Ifthedesignand free area is notknown,itmaybe
assumed that wood louvers will be 20-25 percent free area and metal
louversandgrilleswillhave60-75percentfreearea.Louversandgrilles
shallbefixedin the open positionorinterlockedwith the equipment so
that they are opened automatically during equipment operation.
7. SpecialConditionsCreatedbyMechanicalExhaustingorFireplaces:
operation of exhaust fans, ventilation systems, clothes dryers or
fireplacesmaycreateconditionsrequiring specialattentiontoavoid
unsatisfactory operation of installed gas utilization equipment.
FIGURE 8A.

10
WATER PIPING
HOTTER WATER CAN SCALD:
Water heaters are intended to produce hot water. Water heated to a
temperature which will satisfy space heating, clothes washing, dish
washing, cleaning and other sanitizing needs can scald and
permanently injure you upon contact. Some people are more likely to
be permanently injured by hot water than others. These include the
elderly, children, the infirm, or physically/mentally handicapped. If
anyone using hot water in your home fits into one of these groups or if
there is a local code or state law requiring a certain temperature water
atthehotwatertap,thenyou musttake specialprecautions. Inaddition
to using the lowest possible temperature setting that satisfies your hot
waterneeds,ameanssuchasa*mixingvalve shouldbeusedatthehot
water taps used by these people or at the water heater, see Figure 2.
Valves for reducing point of use temperature by mixing cold and hot
water are also available. Consult a qualified installer or service
agency. Follow manufacturer’sinstructionsforinstallationofthevalves.
Before changing the factory setting on the thermostat, read the
“TemperatureRegulation”sectioninthismanual.
This water heater shall not be connected to any heating systems or
component(s) used with a non-potable water heating appliance.
All piping components connected to this unit for space heating
applications shall be suitable for use with potable water.
Toxic chemicals, such as those used for boiler treatment shall not be
introduced into this system.
When the system requires water for space heating at temperatures
higher than required for domestic water purposes, a tempering valve
must be installed. Please refer to Figure 2 for suggested piping
arrangement.
Water supply systems may, because of such events as high line
pressure,frequentcut-offs,theeffectsof waterhammeramong others,
haveinstalled devicessuchaspressurereducing valves,checkvalves,
back flow preventers, etc. to control these types of problems. When
these devices are not equipped with an internal by-pass, and no other
measuresaretaken,thedevicescause thewatersystem tobeclosed.
INSTALLING THE NEW WATER HEATER
Aswateris heated,itexpands (thermalexpansion)and closedsystems
do not allow for the expansion of heated water.
The water within the water heater tank expands as it is heated and
increases the pressure of the water system. If the relieving point of
the water heater’s temperature-pressure relief valve is reached, the
valve will relieve the excess pressure. The temperature-pressure
relief valve is not intended for the constant relief of thermal
expansion. Thisisanunacceptableconditionandmust be corrected.
It is recommended that any devices installed which could create a
closed system have a by-pass and/or the system have an expansion
tank to relieve the pressure built by thermal expansion in the water
system. Expansion tanks are available for ordering through a local
plumbing contractor. Refer to the “Thermal Expansion” section in
this manual and/or contact the local water supplier and/or a service
agency for assistance in controlling these situations.
NOTE:Toprotectagainst untimelycorrosion of hotand coldwater
fittings, it is strongly recommended that di-electric unions or
couplings be installed on this water heater when connected to
copper pipe.
FIGURE 9.

11
Figure 9 shows the typical attachment of the water piping to the water
heater. The water heater is equipped with 1” NPT threaded nipple
(75 gallon models) or 1.25” NPT threaded nipple (100 gallon models)
water connections.
NOTE: If using copper tubing, solder tubing to an adapter before
attaching the adapter to the cold water inlet connection. Do not
solder the cold water supply line directly to the cold water inlet.
It will harm the dip tube and damage the tank.
TEMPERATURE-PRESSURE RELIEF VALVE
This heater is provided with a properly certified combination
temperature - pressure relief valve by the manufacturer.
The valve is certified by a nationally recognized testing laboratory
that maintains periodic inspection of production of listed equipment
of materials as meeting the requirements for Relief Valves for Hot
Water Supply Systems, ANSI Z21.22 • CSA 4.4, and the code
requirements of ASME.
If replaced, the valve must meet the requirements of local codes, but
not less than a combination temperature and pressure relief valve
certified as indicated in the above paragraph.
Thevalvemust be markedwitha maximum setpressurenot toexceed
the marked maximum working pressure of the water heater
(150 psi = 1,035 kPa) and a discharge capacity not less than the
water heater input rate as shown on the model rating plate.
For safe operation of the water heater, the relief valve must not be
removed from its designated opening nor plugged.
The temperature-pressure relief valve must be installed directly into
the fitting of the water heater designed for the relief valve. Position
the valve downward and provide tubing so that any discharge will exit
onlywithin6” (153mm)above, or atanydistancebelowthe structural
floor. Be certain that no contact is made with any live electrical part.
The discharge opening must not be blocked or reduced in size under
any circumstances. Excessive length, over 30’ (9.14 m), or use of
morethanfourelbows can cause restrictionandreducethe discharge
capacity of the valve, see Figure 10.
No valve or other obstruction is to be placed between the relief valve
andthetank. Donotconnect tubing directly todischargedrainunless
a 6 inch air gap is provided. To prevent bodily injury, hazard to life, or
property damage, the relief valve must be allowed to discharge water
in quantities should circumstances demand. If the discharge pipe is
not connected to a drain or other suitable means, the water flow may
cause property damage.
The Discharge Pipe:
• Shouldnotbesmaller insizethanthe outletpipesizeof thevalve,or
have any reducing couplings or other restrictions.
• Shouldnotbepluggedorblocked.
• Shouldbeofmaterial listedforhotwater distribution.
• Should be installed so as to allow complete drainage of both the
temperature-pressurereliefvalve,and thedischargepipe.
• Mustterminate amaximumofsixinchesaboveafloordrainorexternal
tothebuilding. Incoldclimates, itisrecommendedthatthedischarge
pipebe terminatedatanadequatedraininsidethebuilding.
• Shouldnothaveany valve between thereliefvalveand tank.
The temperature-pressure relief valve must be manually operated at
leastonceayear.Cautionshould betakentoensurethat(1) nooneisin
front of or around the outlet of the temperature-pressure relief
valve discharge line, and (2) the water manually discharged will not
cause any bodily injury or property damage because the water may
be extremely hot.
If after manually operating the valve, it fails to completely reset and
continues to release water, immediately close the cold water inlet to
the water heater, follow the draining instructions, and replace the
temperature-pressure relief valve with a new one.
FIGURE10.

12
FILLINGTHE WATER HEATER
Never use this water heater unless it is completely full of water. To
preventdamagetothe tank,the tank mustbefilledwith water. Water
must flow from the hot water faucet before turning “ON” gas to the
water heater.
To fill the water heater with water:
1. Close the water heater drain valve by turning the handle to the
right (clockwise). The drain valve is on the lower front of the
water heater.
2. Open the cold water supply valve to the water heater.
NOTE: The cold water supply valve must be left open when
the water heater is in use.
3. Toinsurecompletefillingofthetank, allow air to exit byopeningthe
nearest hot water faucet. Allow water to run until a constant flow is
obtained. This will let air out of the water heater and the piping.
4. Checkallwaterpipingandconnectionsforleaks. Repairasneeded.
VENTING
VENTDAMPERS -Anyventdamper,whether itisoperatedthermally
or otherwise must be removed if its use inhibits proper drafting of
the water heater.
Thermally Operated Vent Dampers: this gas-fired water heater has a
thermal efficiency at or above 80% which may produce a relatively
lowfluegastemperature. Suchtemperatures maynotbehighenough
toproperlyopen thermallyoperatedventdampers. This wouldcause
spillageofthe fluegasesand maycausecarbon monoxidepoisoning.
Vent dampers must bear evidence of certification as complying with
the current edition of theAmerican National StandardANSI Z21.66
CGA 6.14 (covering electrically and mechanically actuated vent
dampers). Before installation of any vent damper, consult the local
gas utility for further information.
To insure proper venting of this gas-fired water heater, the correct
vent pipe diameter must be utilized. Any additions or deletions of
other gas appliances on a common vent with this water heater may
adversely affect the operation of the water heater. Consult your gas
supplier if any such changes are planned.
For proper venting in certain installations, a larger diameter vent pipe
maybenecessary. Consult yourgassupplierto aid youindetermining
the proper venting for your water heater from the vent tables in the
current edition of the National Fuel Gas CodeANSI Z223.1/NFPA 54.
Periodically check the venting system for signs of obstruction or
deterioration and replace if needed.
The combustion and ventilation air flow must not be obstructed.
The water heater with draft hood installed must be connected to a
chimneyorlisted vent pipesystem,which terminates totheoutdoors.
Never operate the water heater unless it is vented to the outdoors
and has adequate air supply to avoid risks of improper operation,
explosion or asphyxiation.
• For proper draft hood attachment, the draft hood legs may be
angled slightly inward.
• Place the draft hood legs in the receiving holes on the top of the
water heater. The legs will snap in the holes to give a tight fit.
Secure draft hood with the supplied brackets.
• Placetheventpipeoverthedrafthood.Withtheventpipeinposition,
drill a small hole through both the vent pipe and draft hood. Secure
them together with a sheet metal screw, see Figure 11.
Obstructedordeterioratedventsystems may presentserioushealth
risk or asphyxiation.
FIGURE 11.
Theventpipefromthewaterheatermust benoless thanthediameter
of the draft hood outlet on the water heater and must slope upward at
least 1/4 inch per linear foot (21 mm per meter), see Figure 12.
All vent gases must be completely vented to the outdoors of the
structure (dwelling). Install only the draft hood provided with the
new water heater and no other draft hood.
Vent pipes must be secured at each joint with sheet metal screws.

13
FIGURE 12.
Theremustbeaminimumof6” (153 mm) clearance between single
wallventpipeandanycombustiblematerial. Fillandsealanyclearance
between single wall vent pipe and combustible surfaces with mortar
mix,cement,orothernoncombustiblesubstance. Forotherthansingle
wall,follow ventpipemanufacturer’sclearancespecifications.Toinsure
atightfitof theventpipein abrickchimney, sealaroundthevent pipe
withmortarmix cement.
Failure to have required clearances between vent piping and
combustible material will result in a fire hazard.
Be sure vent pipe is properly connected to prevent escape of
dangerous flue gases which could cause deadly asphyxiation.
Chemical vapor corrosion of the flue and vent system may occur if
air for combustion contains certain chemical vapors. Spray can
propellants, cleaning solvents, refrigerator and air conditioner
refrigerants,swimming poolchemicals,calciumand sodiumchloride,
waxes,bleachandprocesschemicalsare typical compounds which
are potentially corrosive.
GAS PIPING
Makesurethegassuppliedisthesame typelistedon themodelrating
plate. Theinletgaspressure must notexceed14inch water column
(2.6kPa)fornaturalandpropane(L.P.)gas. Theminimuminletgas
pressure shown on the rating plate is that which will permit firing at
ratedinput.
Ifthegas controlvalveis subjectedtopressures exceeding1/2pound
persquareinch(3.5kPa), the damage tothegascontrolvalve could
result in a fire or explosion from leaking gas.
If the main gas line shut-off serving all gas appliances is used, also
turn “off” the gas at each appliance. Leave all gas appliances shut
“off” until the water heater installation is complete.
Agas line of sufficient size must be run to the water heater. Consult
the current edition of National Fuel Gas Code ANSI Z223.1/NFPA
54 and your gas supplier concerning pipe size.
There must be:
• Areadily accessible manual shut off valve in the gas supply line
serving the water heater, and
• A drip leg (sediment trap) ahead of the gas control valve to help
prevent dirt and foreign materials from entering the gas control
valve.
• Aflexiblegasconnectoror a ground joint unionbetweentheshut
off valve and control valve to permit servicing of the unit.
Besuretocheckallthe gas piping forleaksbeforelightingthewater
heater. Use a soapy water solution, not a match or open flame.
Rinse off soapy solution and wipe dry.
The minimum inlet gas pressure shown on the rating plate is that
which will permit firing at the rated input.
Waterheaterscoveredinthismanualhavebeentestedand approved
for installation at elevations up to 7,700 feet (2,347 m) above sea
level. For installation above 7,700 feet (2,347 m), the water heater’s
Btu input should be reduced at the rate of 4 percent for each 1,000
feet (305 m) above sea level which requires replacement of the
burner orifice in accordance with the National Fuel Gas CodeANSI
Z223.1/NFPA 54. Contact your local gas supplier for further
information.
Failure to replace the standard orifice with the proper high altitude
orificewheninstalledatelevations above 7,700 feet(2,347m)could
resultinimproper andinefficient operationofthe appliance,producing
carbon monoxide gas in excess of the safe limits. This could result
in serious injury or death. Contact your local gas supplier for any
specific changes that may be required in your area.

14
Use pipe joint compound or teflon tape marked as being resistant to
the action of petroleum [Propane (L.P.)] gases.
The appliance and its gas connection must be leak tested before
placing the appliance in operation.
Theapplianceandits individualshut-offvalveshallbe disconnected
from the gas supply piping system during any pressure testing of
that system at test pressures in excess of 1/2 pound per square
inch(3.5kPa). Itshallbe isolated fromthegassupplypiping system
by closing its individual manual shut-off valve during any pressure
testing of the gas supply piping system at test pressures equal to or
less than 1/2 pound per square inch (3.5 kPa).
Connectingthegas piping tothegas controlvalveofthe waterheater
canbeaccomplishedbyeitherof the two methods showninFigures
13 and 14.
FIGURE 13. GAS PIPING WITH FLEXIBLE CONNECTOR.
FIGURE 14. GAS PIPING WITH ALL
BLACK IRON PIPE TO GAS CONTROL.
SEDIMENT TRAPS
A sediment trap shall be installed as close to the inlet of the water
heater as practical at the time of water heater installation. The
sediment trap shall be either a tee fitting with a capped nipple in the
bottom outlet or other device recognized as an effective sediment
trap. If a tee fitting is used, it shall be installed in conformance with
one of the methods of installation shown in Figures 13 and 14.
Contaminants in the gas lines may cause improper operation of the
gas control valve that may result in fire or explosion. Before attaching
the gas line be sure that all gas pipe is clean on the inside. To trap any
dirt or foreign material in the gas supply line, a drip leg (sometimes
calledasedimenttrap)must beincorporatedinthepiping. Thedripleg
mustbereadilyaccessible. Installin accordance with the “GasPiping”
section. Refer to the current edition of the National Fuel Gas Code,
ANSI Z223.1/NFPA54.

15

16
FOR YOUR SAFETY READ BEFORE LIGHTING
BEFORE LIGHTING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED AT FAUCETS.
WARNING: If you do not follow these instructions exactly, a fire or
explosion may result causing property damage, personal injury or loss of life.
1. STOP! Read the safety information above on
this label.
2. Set the thermostat to the lowest setting by turning
thermostat dial fully clockwise until it stops.
3. Push the gas control knob down slightly and turn
clockwise to "OFF" (Figure A).
NOTE:GascontrolknobCANNOTbeturnedfrom"PILOT"
to "OFF" unless it is pushed down slightly. Do not force.
4. Remove the inner and outer doors located below and
behind the gas control unit.
5. Wait five (5) minutes to clear out any gas. If you then
smell gas STOP! Follow"B"in the safetyinformation
above on this label. If you do not smell gas, go to the
next step.
6. Find Pilot. Follow metal tube from the bottom , right of
the gas control to the pilot burner. (Figure D).
7. Turn gas control knob counterclockwise to"PILOT"
(Figure B).
8. Push gas control knob down all the way and hold it down.
Immediately light the pilot with a match. Continue to hold
the gas control knob down for about one (1) minute
after the pilot is lit. Release the gas control knob and it
will pop back up. Pilot should remain lit. If it goes out,
repeat Steps 3 through 8. It may take several minutes for
air to clear the lines, before the pilot will light.
•If knob does not pop up when released, stop and
immediately call your service technician or gas
supplier.
•If the pilot will not stay lit after several tries, turn the
gas control knob to "OFF" (Figure A) andcall your
service technician or gas supplier.
9. Replace inner and outer burner doors.
10. At arm's length away, turn the gas control knob
counterclockwise to “ON” (Figure C).
11. Set thermostat to desired setting (See Figure).
CAUTION: Hotter water increases the risk of
scald injury. Consult the instruction manual
before changing temperature.
LIGHTING INSTRUCTIONS
TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to lowest setting. 2. Push gascontrolknobdown slightly andturnclockwise
to “OFF”. Do not force, see Figure A.
TOP VIEW FIGURE “D”
GAS CONTROL
A. Thisappliancehasapilotwhichmustbelightedbyhand.
Whenlightingthe pilot,followthese instructionsexactly.
B. BEFORE LIGHTING: smell all around the appliance
areaforgas. Besure tosmellnextto thefloorbecause
somegasisheavierthan air andwillsettleonthe floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use
any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the
fire department.
C. Useonlyyour handtopushdown or turnthegas control
knob. Neverusetools. Iftheknobwillnotpushdown or
turn by hand, don’t try to repair it, call a qualified service
technician. Forceorattempted repairmayresult in afire
or explosion.
D. Donotusethisapplianceifanyparthasbeenunderwater.
Immediatelycontact aqualifiedinstallerorserviceagency
toreplaceafloodedwaterheater. Donotattempttorepair
the unit! It must be replaced!

17
FOR YOUR INFORMATION
START UPCONDITIONS
DRAFT HOOD OPERATION
Check draft hood operation by performing a worst case
depressurization of the building. With all doors and windows closed,
and with all air handling equipment and exhaust fans operating such
asfurnaces,clothes dryers,rangehoods andbathroomfans,amatch
flameshouldstillbedrawnintothe draft hood ofthewaterheaterwith
its burner firing. If the flame is not drawn toward the draft hood, shut
off water heater and make necessary air supply changes to correct.
CONDENSATION
Whenever the water heater is filled with cold water, some condensate
Never allow small children to use a hot water tap, or to draw their
own bath water. Never leave a child or handicapped person
unattended in a bathtub or shower.
NOTE: A water temperature range of 120°F-140°F (49°C-60°C) is
recommended by most dishwasher manufacturers.
The thermostat of this water heater has been factory set at its lowest
position (PILOT LIGHTING). It is adjustable and must be reset to the
desired temperature setting to reduce the risk of scald injury. The
mark( )indicativeofapproximately120°F(49°C)ispreferredstarting
point. Some States have a requirement for a lower setting.
Turn the water temperature dial clockwise ( ) to decrease the
temperature,orcounterclockwise ( ) toincreasethe temperature.
Should overheating occur or the gas supply fail to shut off, turn off
the manual gas control valve to the appliance.
FIGURE 15.
Short repeated heating cycles caused by small hot water uses can
causetemperaturesatthepointofusetoexceedthethermostatsetting
by up to 30°F (16.7°C). If you experience this type of use you should
consider using lower temperature settings to reduce scald hazards.
Any water heater’s intended purpose is to heat water. Hot water is
neededforcleansing,cleaning,andsanitizing(bodies,dishes,clothing).
Untempered hot water can present a scald hazard. Depending on the
time element, and the people involved (adults, children, elderly, infirm,
etc.) scalding may occur at different temperatures.
HOTTER WATER CAN SCALD: Water heaters are intended to
produce hot water. Water heated to a temperature which will satisfy
space heating, clothes washing, dish washing, and other sanitizing
needs can scald and permanently injure you upon contact. Some
people are more likely to be permanently injured by hot water than
others. These include the elderly, children, the infirm, or physically/
mentally handicapped. If anyone using hot water in your home fits
intooneof thesegroups orifthereisalocalcodeor statelawrequiring
a certain temperature water at the hot water tap, then you must take
special precautions. In addition to using the lowest possible
temperaturesettingthat satisfiesyourhot waterneeds,a meanssuch
as a mixing valve should beused at the hot water taps used by these
peopleorat thewaterheater. Mixingvalves areavailableat plumbing
supply or hardware stores, see Figure 2. Follow manufacturer’s
instructions for installation of the valves. Before changing the factory
settingonthethermostat, readthe“TemperatureRegulation” sectionin
thismanual,seeFigures15and16.
TEMPERATURE REGULATION
VERY HOT= approx. 160°F (71°C) About 1/2 second
C = approx. 150°F (66°C) About 1-1/2 seconds
B = approx. 140°F (60°C) Less than 5 seconds
A = approx. 130°F (54°C) About 30 seconds
= approx. 120°F (49°C) More than 5 minutes
LOW = approx. 80°F (27°C) - - - - - - - - - - - - - - - -
FIGURE 16.
willformwhile theburnerison. Awater heatermayappear tobeleaking
when in fact the water is condensation. This usually happens when:
a. A new water heater is filled with cold water for the first time.
b. Burning gas produces water vapor in water heaters, particularly
high efficiency models where flue temperatures are lower.
c. Large amounts of hot water are used in a short time and the refill
water in the tank is very cold.
Moisture from the products of combustion condense on the cooler
tank surfaces and form drops of water which may fall onto the burner
or other hot surfaces to produce a “sizzling” or “frying” noise.
Excessive condensation can cause pilot outage due to water running
down the flue tube onto the main burner and putting out the pilot.
Temperature
Settings
Time to Produce 2nd & 3rd
Degree Burns on Adult Skin

18
Becauseofthesuddennessand amountofwater,condensationwater
may be diagnosed as a “tank leak”. After the water in the tank warms
up (about 1-2 hours), the condition should disappear.
Donotassumethewaterheateris leakinguntiltherehasbeen enough
time for the water in the tank to warm up.
Anundersizedwater heaterwillcause morecondensation. Thewater
heater must be sized properly to meet the family’s demands for hot
water including dishwashers, washing machines and shower heads.
Excessive condensation may be noticed during the winter and early
springmonthswhenincoming watertemperaturesareat theirlowest.
Goodventingisessentialforagasfiredwaterheatertooperateproperly
as well as to carry away products of combustion and water vapor.
SMOKE/ODOR
It is not uncommon to experience a small amount of smoke and odor
during the initial start-up. This is due to burning off of oil from metal
parts, and will disappear in a short while.
THERMAL EXPANSION
Water supply systems may, because of such events as high line
pressure,frequentcut-offs,theeffectsofwater hammeramongothers,
haveinstalleddevicessuchaspressurereducingvalves, checkvalves,
back flow preventers, etc. to control these types of problems. When
thesedevicesare notequippedwith aninternalby-pass,and noother
measuresaretaken,thedevicescausethe watersystemtobeclosed.
Aswaterisheated,itexpands (thermalexpansion)and closedsystems
do not allow for the expansion of heated water.
The water within the water heater tank expands as it is heated and
increases the pressure of the water system. If the relieving point of
the water heater’s temperature-pressure relief valve is reached, the
valve will relieve the excess pressure. The temperature-pressure
relief valve is not intended for the constant relief of thermal
expansion. Thisis anunacceptable conditionandmust becorrected.
It is recommended that any devices installed which could create a
closedsystemhavea by-passand/orthe system have anexpansion
tank or device to relieve the pressure built by thermal expansion in
thewatersystem. Expansion tanksareavailablefor orderingthrough
a local plumbing contractor. Contact the local water heater supplier
or service agency for assistance in controlling these situations.
STRANGE SOUNDS
Possible noises due to expansion and contraction of some metal
parts during periods of heat-up and cool-down do not necessarily
represent harmful or dangerous conditions.
Condensation causes sizzling and popping within the burner area
duringheatingand coolingperiodsandshould beconsiderednormal.
See “Condensation” in this section.
OPERATIONAL CONDITIONS
SMELLY WATER
In each water heater there is installed at least one anode rod (see
parts section) for corrosion protection of the tank. Certain water
conditions will cause a reaction between this rod and the water.
The most common complaint associated with the anode rod is one
of a “rotten egg smell” in the hot water. This odor is derived from
hydrogen sulfide gas dissolved in the water. The smell is the result
of four factors which must all be present for the odor to develop:
a. A concentration of sulfate in the supply water.
b. Little or no dissolved oxygen in the water.
c. A sulfate reducing bacteria which has accumulated within the
water heater (this harmless bacteria is nontoxic to humans).
d. An excess of active hydrogen in the tank. This is caused by the
corrosion protective action of the anode.
Smellywatermaybeeliminatedorreducedinsomewaterheatermodels
by replacing the anode(s) with one of less active material, and then
chlorinating the water heater tank and all hot water lines. Contact the
local water heater supplier or service agency for further information
concerning anAnode Replacement Kit and this chlorination treatment.
If the smelly water persists after the anode replacement and
chlorinationtreatment, wecanonlysuggestthatchlorinationoraeration
of the water supply be considered to eliminate the water problem.
Do not remove the anode leaving the tank unprotected. By
doing so, all warranty on the water heater tank is voided.
“AIR” IN HOT WATER FAUCETS
HYDROGEN GAS: Hydrogen gas can be produced in a hot water
system that has not been used for a long period of time (generally
two weeks or more). Hydrogen gas is extremely flammable and
explosive. To prevent the possibility of injury under these conditions,
werecommendthehotwater faucet,locatedfarthestaway,beopened
for several minutes before any electrical appliances which are
connected to the hot water system are used (such as a dishwasher
or washing machine). If hydrogen gas is present, there will probably
be an unusual sound similar to air escaping through the pipe as the
hotwaterfaucetis opened. Theremustbeno smoking oropenflame
near the faucet at the time it is open.
HIGH WATER TEMPERATURE SHUT OFF SYSTEM
Thiswaterheater is equippedwithan automatic gasShut-offsystem.
This system works when high water temperatures are present. The
high temperature Shut-off is built into the gas control valve. It is
non-resettable. If the high temperature Shut-off activates, the gas
controlvalvemustbereplaced. Contact your gas supplierorservice
agency. Turn “OFF” the entire gas supply to the water heater.

19
You shouldcheckfor sooting.Sootisnotnormalandwillimpairproper
combustion.
Soot build-up indicates a problem that requires correction before
furtheruse. Turn“OFF”gasto waterheaterand leave offuntil repairs
are made, because failure to correct the cause of the sooting can
result in a fire causing death, serious injury, or property damage.
FIGURE 17.
BURNER CLEANING
If inspection of the burner shows that cleaning is required, turn the gas
controlknobclockwise( ) to the“OFF”position,depressing slightly.
NOTE: The knob cannot be turned from “PILOT” to “OFF”
unless knob is depressed slightly. DO NOT FORCE.
Loosedepositsonor around the burnercanberemoved by carefully
using the hose of a vacuum cleaner inserted through the access
door of the water heater. If the burner needs to be removed for
additional cleaning, call a service agency to remove and clean the
burnerandcorrect theproblemthatrequiredtheburnertobecleaned.
HOUSEKEEPING
Vacuum around base of water heater for dust, dirt, and lint on a
regular basis.
VENTING SYSTEM INSPECTION
Atleastonce ayeara visualinspectionshouldbe madeofthe venting
system. You should look for:
1. Obstructions which could cause improper venting. The
combustion and ventilation air flow must not be obstructed.
2. Damage or deterioration which could cause improper venting or
leakage of combustion products.
3. Rusted flakes around top of water heater.
Be sure the vent piping is properly connected to prevent escape of
dangerous flue gases which could cause deadly asphyxiation.
Obstructions and deteriorated vent systems may present serious
health risk or asphyxiation.
Chemical vapor corrosion of the flue and vent system may occur if
air for combustion contains certain chemical vapors. Spray can
propellants, cleaning solvents, refrigerator and air conditioner
refrigerants,swimming poolchemicals,calciumand sodiumchloride,
waxes,bleachandprocesschemicalsare typical compounds which
are potentially corrosive.
If after inspection of the vent system you found sooting or
deterioration,somethingiswrong. Callthe local gas utilitytocorrect
the problem and clean or replace the flue and venting before
resuming operation of the water heater.
BURNER INSPECTION
Flood damage to a water heater may not be readily visible or
immediately detectable. However, over a period of time a flooded
water heater will create dangerous conditions which can cause
DEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE.
Contact a qualified installer or service agency to replace a flooded
water heater. Do not attempt to repair the unit! It must be replaced!
At least once a year a visual inspection should be made of the main
burner and pilot burner, see Figure 17.
PERIODIC MAINTENANCE
NATURAL
PROPANE

20
Inreplacingtheanode:
1. Turn off gas supply to the water heater.
2. Shut off the water supply and open a nearby hot water faucet to
depressurize the water tank.
3.Drainapproximately5gallonsofwaterfromtank. (Referto “Draining
and Flushing” for proper procedures). Close drain valve.
4.Removeoldanode rod.
5.UseTefl on® tapeorapproved pipe sealant onthreadsandinstall
new anode rod.
6. Turn on water supply and open a nearby hot water faucet to
purgeairfromwater system.Checkforany leaksandimmediately
correct any if found.
7.Restartthe waterheaterasdirected inthismanual. SeetheRepair
PartsIllustrationforanoderod location.
TEMPERATURE-PRESSURE
RELIEFVALVE OPERATION
Thetemperature-pressurereliefvalve mustbemanuallyoperated at
leastonceayear.
Whencheckingthetemperature-pressurereliefvalveoperation, make
surethat (1)no oneisinfrontoforaroundtheoutletofthetemperature-
pressurereliefvalvedischargeline, and (2)thatthewaterdischarge
willnotcauseanypropertydamage,as the water may be extremely
hot,seeFigure 18.
FIGURE 19.
If after manually operating the valve, it fails to completely reset and
continuestoreleasewater,immediatelyclose the cold water inlet to
the water heater, follow the draining instructions, and replace the
temperature-pressure relief valve with a new one.
If the temperature-pressure relief valve on the appliance weeps or
discharges periodically, this may be due to thermal expansion.You
may have a check valve installed in the water line or a water meter
with a check valve. Consult your local water supplier or service
agencyfor furtherinformation. Donotplug thetemperature-pressure
reliefvalve.
INSTALLEDIN SUITABLEAREA:Toinsuresufficient ventilationand
combustionairsupply,properclearancesfrom the waterheatermust
be maintained. See “Locating the New Water Heater” section.
Combustiblematerialssuchasclothing,cleaningmaterials,orflammable
liquids,etc.must notbeplaced againstoradjacent tothewater heater
which can cause a fire.
ANODERODINSPECTION
Eachwaterheatercontainsatleast one anode rod,whichwillslowly
deplete(duetoelectrolysis) prolonging the lifeofthewater heater by
protectingtheglass-linedtankfromcorrosion.Adverse waterquality,
hotterwatertemperatures, highhotwaterusage, andwatersoftening
methods can increase the rate of anode rod depletion. Once the
anode rod is depleted, the tank will start to corrode, eventually
developingaleak.
Certain water conditions will cause a reaction between the anode
rodandthewater.Themostcommoncomplaintassociatedwiththe
anode rod is a “rotten egg smell” produced from the presence of
hydrogen sulfi de gas dissolved in the water. IMPORTANT: Do not
remove this rod permanently as it will void any warranties.Aspecial
anode rod may be available if water odor or discoloration occurs.
NOTE: This rod may reduce but not eliminate water odor problems.
The water supply system may require special fi ltration equipment
fromawater conditioningcompanytosuccessfully eliminateallwater
odorproblems.
Artifi cially softened water is exceedingly corrosive because the
process substitutes sodium ions for magnesium and calcium ions.
The use of a water softener may decrease the life of the water
heatertank.
Theanoderodshouldberemovedfromthe water heater tank every
3yearsforinspection.NOTE:artificially softened water requires the
anoderodtobeinspectedannually.
The following are typical (but not all) signs of a depleted anode rod:
• The majority of the rods diameter is less than 3/8”.
• Signifi cant sections of the support wire (approx. 1/3 or more of
theanoderod’slength)arevisible.
FIGURE 18.
If the anode rod show signs of either or both it should be replaced.
NOTE:Whetherre-installing orreplacingtheanoderod,checkforany
leaksandimmediately correctiffound.