State Water Heaters SBL 100 76NE Series 100 User manual

1
Instruction Manual
PRINTED 1112 325366-000
KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE
WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.
ULTRA LOW NOX COMMERCIAL GAS WATER HEATERS
• For Your Safety •
AN ODORANT IS ADDED TO THE GAS USED
BY THIS WATER HEATER.
MODELS SBL 100 76NE
Series 100
INSTALLATION - OPERATION - SERVICE
- MAINTENANCE - LIMITED WARRANTY
PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
Read and understand this instruction
manual and the safety messages
herein before installing, operating or
servicing this water heater.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
This manual must remain with the
water heater.
Low Lead Content
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS:
Do not try to light any appliance.
Do not touch any electrical 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.
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
•
•
•
•
500 Tennessee Waltz Parkway
Ashland City, TN 37015

2
SAFE INSTALLATION, USE AND SERVICE...................... 3
APPROVALS ...................................................................... 3
GENERAL SAFETY INFORMATION.................................. 4
INTRODUCTION................................................................ 5
Abbreviations Used ..................................................... 5
 QualiedInstallerorServiceAgency........................... 5
 PreparingfortheNewInstallation ............................... 5
INSTALLATION CONSIDERATIONS ............................. 6-9
 RoughInDimensions.................................................. 6
 Thermometers............................................................. 7
 FactstoConsiderAboutLocation ............................... 7
 HighAltitude ................................................................ 8
 Clearances .................................................................. 8
Insulation Blankets ...................................................... 9
Hard Water .................................................................. 9
 CirculationPumps ....................................................... 9
INSTALLATION REQUIREMENTS .................................. 10
 GasSupplySystems................................................. 10
 GasPressureRequirements..................................... 10
 SupplyGasRegulator ............................................... 10
 MixingValves ............................................................ 10
 WaterPiping.............................................................. 11
 ClosedWaterSystems.............................................. 11
 ThermalExpansion ................................................... 11
 Temperature-PressureReliefValve......................... 11
 FillingtheWaterHeater............................................. 12
 AirRequirements....................................................... 12
 UnconnedSpace..................................................... 13
 ConnedSpace......................................................... 13
 FreshAirOpeningsforConnedSpaces .................. 13
 OutdoorAirThroughTwoOpenings.......................... 13
 OutdoorAirThroughOneOpening ........................... 13
 OutdoorAirThroughTwoHorizontalDucts............... 14
 OutdoorAirThroughTwoVerticalDucts ................... 14
 AirFromOtherIndoorSpaces .................................. 14
 Venting ...................................................................... 14
 GasPiping................................................................. 16
 SedimentTraps ......................................................... 17
LIGHTING & OPERATING INSTRUCTIONS ................... 18
TEMPERATURE REGULATION ...................................... 19
FOR YOUR INFORMATION............................................. 19
Start Up Conditions ................................................... 19
Operational Conditions.............................................. 20
PERIODIC MAINTENANCE............................................. 21
 VentingSystemInspection ........................................ 21
 BurnerInspection ...................................................... 21
 BurnerCleaning ........................................................ 21
 Housekeeping ........................................................... 21
 AnodeRodInspection............................................... 22
 Temperature-PressureReliefValveTest ................... 22
RECOMMENDED PROCEDURE FOR PERIODIC
REMOVAL OF LIME DEPOSITS FROM TANK
TYPE COMMERCIAL WATER HEATERS........................ 22
 DelimingSolvents...................................................... 23
 TankCleanoutProcedure.......................................... 23
 DelimingUsingFlo-JugMethod ................................ 23
 DrainingandFlushing ............................................... 24
 Service ...................................................................... 25
LEAKAGE CHECKPOINTS.............................................. 25
TROUBLESHOOTING GUIDELINES............................... 26
WATER PIPING DIAGRAMS.......................................27-32
NOTES ............................................................................. 33
WARRANTY ..................................................................... 35
TABLE OF CONTENTS

3
SAFE INSTALLATION, USE AND SERVICE
Theproperinstallation,useandservicingofthiswaterheaterisextremelyimportanttoyoursafetyandthesafetyofothers.
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.
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listedintheAct.
DANGER
WARNING
CAUTION
CAUTION
DANGER indicates an imminently
hazardous situation which, if not avoided,
will result in injury or death.
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.
WARNING indicates a potentially hazardous
situation which, if not avoided, could result
in injury or death.
CAUTION indicates a potentially 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.
APPROVALS
Low Lead Content

4
GENERAL SAFETY INFORMATION

5
ThankYouforpurchasingthiswaterheater.Properlyinstalledand
maintained,itshouldgiveyouyearsoftroublefreeservice.
ABBREVIATIONS USED
AbbreviationsFoundInThisInstructionManual:
• UL-UnderwritersLaboratoriesInc.
• ANSI-AmericanNationalStandardsInstitute
• NFPA-NationalFireProtectionAssociation
• ASME-AmericanSocietyofMechanicalEngineers
• AHRI-Air-Conditioning,HeatingandRefrigerationInstitute
• CAN-Canada
• EPACT-EnergyPolicyAct
• 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HeatersANSIZ21.10.3•CSA4.3(currentedition).
QUALIFIED INSTALLER OR SERVICE AGENCY
Installationandserviceofthiswaterheaterrequiresabilityequivalent
tothatofaQualiedAgency(asdenedbyANSIbelow)intheeld
involved. Installation skills such as plumbing, air supply, venting,
gassupplyandelectricalsupplyarerequiredinadditiontoelectrical
testingskillswhenperformingservice.
ANSIZ223.12006Sec.3.3.83:“QualiedAgency”-“Anyindividual,
rm, corporation or company that either in person or through a
representativeisengagedinandisresponsiblefor(a)theinstallation,
testingorreplacementofgaspipingor(b)theconnection,installation,
testing, repair or servicing of appliances and equipment; that is
experiencedinsuchwork;thatisfamiliarwithallprecautionsrequired;
and that has complied with all the requirements of the authority
havingjurisdiction.”
Ifyouarenotqualied(asdenedbyANSIabove)andlicensedor
certiedasrequiredbytheauthorityhavingjurisdictiontoperforma
giventaskdonotattempttoperformanyoftheproceduresdescribed
in this manual. If you do not understand the instructions given in
thismanualdo not attempttoperformany procedures outlinedin
thismanual.
PREPARING FOR THE INSTALLATION
1. Read the “General Safety”section,page4of thismanual
firstandthentheentiremanualcarefully.Ifyoudon’tfollow
thesafetyrules,thewaterheaterwillnotoperateproperly.
ItcouldcauseDEATH,SERIOUSBODILYINJURYAND/OR
PROPERTY DAMAGE.
 This manual contains instructions for the installation,
operation,andmaintenanceofthegas-firedwaterheater.It
alsocontainswarningsthroughoutthemanualthatyoumust
readandbeawareof.Allwarningsandallinstructionsare
essentialtotheproperoperationofthewaterheaterandyour
safety.Sincewecannotputeverythingonthefirstfewpages,
READ THE ENTIRE MANUAL BEFORE ATTEMPTING TO
INSTALL OR OPERATE THE WATER HEATER.
2.The installation must conform with these instructions and
thelocalcodeauthorityhavingjurisdiction.Intheabsence
oflocalcodes,theinstallationmustcomplywiththecurrent
editions of the National Fuel Gas Code, ANSI Z223.1/
NFPA54orCAN/CSA-B149.1theNaturalGasandPropane
Installation Code. All documents are available from the
CanadianStandardsAssociation,8501EastPleasantValley
Road, Cleveland, OH 44131. NFPA documents are also
available from the National Fire Protection Association, 1
BatterymarchPark,Quincy,MA02269.
3.Ifafterreadingthismanualyou haveanyquestions ordo
notunderstandanyportionoftheinstructions,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, vent action, and vent
pipeinstallationareveryimportantinpreventingdeathfrom
possiblecarbonmonoxidepoisoningandfires,seeFigures
3 and 7.
 Examinethelocationtoensurethewaterheaterc omplieswith
the“LocatingtheNewWaterHeater”sectioninthismanual.
5.ForCaliforniainstallationthiswaterheatermustbebraced,
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. Complies with SCAQMD rule #1146.2 and districts having
equivalentNOxrequirements.
INTRODUCTION

6
ROUGH IN DIMENSIONS
INSTALLATION CONSIDERATIONS
FIGURE 1.
K
HOT WATER
OUTLET
DRAIN
VALVE
HOT COLD
TOP VIEW
L
GAS INLET
INSTALL IN ACCORDANCE WITH LOCAL CODES
DRAIN VALVE
K
COLD WATER
INLET
F
H
J
B
D
A
E
M
C
TEMPERATURE
AND PRESSURE
RELIEF VALVE
C
RECOVERY RATINGS
DIMENSIONS
TABLE 1.
INPUT RATE Recovery in US Gallons/hr or Liters/hr at Indicated Temperature Rise in Fahrenheit or Celsius
75,100BTU/H °F 30 40 50 60 70 80 90 100 110 120 130 140
GPH 246 184 148 123 105 92 82 74 67 62 57 53
22 KW °C 17 22 28 33 39 44 50 56 61 67 72 78
LPH 927 695 557 462 397 347 309 278 252 233 214 198
Recoveryratingsbasedon81%thermalefciency.
Units A B C D E F G H J K L M
Inches
CM
701/2
179.07
661/2
168.9
3015/16
78.59
273/4
70.5
153/16
38.6
4
10.2
153/4
40.0
16
40.6
11/4
3.2
11/4
NPT
1/2
NPT
1115/16
30.3

7
THERMOMETERS (Not Supplied)
Thermometersshouldbeobtainedandeldinstalled.
Thermometersareinstalledinthesystemasameansofdetecting
thetemperatureoftheoutletwatersupply.
ThisWaterHeaterhasbeendesigncertifiedascomplyingwith
ANSIZ21.10.3-CSA4.3currenteditionforwaterheatersandis
consideredsuitablefor:
Water (Potable) Heating and Space Heating:All models are
consideredsuitableforwater(potable)heatingandspaceheating.
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inrm,orphysically/mentallyhandicapped.Ifanyoneusinghot
waterinyourhometsintooneofthesegroupsorifthereisalocal
coderequiringacertaintemperaturewateratthehotwatertap,then
youmusttakespecialprecautions.Inadditiontousingthelowest
possible temperature setting that satises your hot water needs,
ameanssuchasa*MixingValveshould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qualied
installer or service agency. Follow mixing valve manufacturer’s
instructions for installation of valves. Before changing the factory
settingonthethermostat,readthe“TemperatureRegulation”section
inthismanual,seeFigures17and18.
FACTS TO CONSIDER ABOUT THE LOCATION
Carefully choose an indoor location for the new water heater,
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 water heater. 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
chimneytowhichthewaterheaterventisgoingtobeconnected,
andascentralizedwiththewaterpipingsystemaspossible.
2.Selected location must provide adequate clearances for
servicingandproperoperationofthewaterheater.
Installationofwaterheatermustbeaccomplishedinsuchamannerthat
ifthetankoranyconnectionsshouldleak,owwillnotcausedamageto
thestructure.Forthisreason,itisnotadvisabletoinstallwaterheater
inanatticorupperoor.Whensuchlocationscannotbeavoided,a
suitablemetaldrainpanshouldbeinstalledunderthewaterheater.
MetalDrainpansareavailableatyourlocalhardwarestore.Sucha
metaldrainpanmusthaveaminimumlengthandwidthofatleast
2”(51mm)greaterthanwaterheaterdimensionsandmustbepiped
toanadequatedrain.Thepanmustnotrestrictcombustionairow.
Waterheaterlifedependsuponwaterquality,waterpressureandthe
environmentinwhichthewaterheaterisinstalled.Waterheatersare
sometimesinstalledinlocationswhereleakagemayresultinproperty
damage,evenwiththeuseofadrainpanpipedtoadrain.However,
unanticipateddamagecanbereducedorpreventedbyaleakdetector
orwatershut-offdeviceusedinconjunctionwithapipeddrainpan.
Thesedevicesareavailablefromsomeplumbingsupplywholesalers
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.
INSTALLATIONS IN AREAS WHERE FLAMMABLE LIQUIDS
(VAPORS)ARELIKELYTOBEPRESENTORSTORED(GARAGES,
STORAGEANDUTILITYAREAS,ETC.):Flammableliquids(suchas
gasoline,solvents,propane[LPorbutane,etc.]andothersubstances
suchasadhesives,etc.)emitammablevaporswhichcanbeignitedby
agaswaterheater’spilotlightormainburner.Theresultingashback
andre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
installationmustbeaccomplishedinawaythatthepilotameandmain
burnerameareelevatedfromooratleast18inches.Whilethismay
reducechancesofammablevapors,fromaoorspillbeingignited,
gasolineandotherammablesubstancesshouldneverbestoredor

8
usedinthesameroomorareacontainingagaswaterheaterorother
openameorsparkproducingappliance.NOTE:Flammablevaporsmay
be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.
Thiswaterheatermustnotbeinstalleddirectlyoncarpeting.Carpeting
mustbeprotectedbymetalorwoodpanelbeneaththewaterheater
extendingbeyondthefullwidthanddepthofthewaterheaterbyatleast
3”(76.2mm)inanydirection,orifthewaterheaterisinstalledinan
alcoveorcloset,theentireoormustbecoveredbythepanel.Failure
toheedthiswarningmayresultinarehazard.
HIGH ALTITUDE
Waterheaterscoveredinthismanualhavebeentestedand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
oriceinaccordancewiththeNationalFuelGasCodeANSIZ223.1/
NFPA54or the NaturalGasandPropane InstallationCodeCAN/
CSAB149.1.Contactyourlocalgassupplierforfurtherinformation.
Failuretoreplacethestandardoricewiththeproperhighaltitude
orice when installed at elevations above 7,700 feet (2,347 m)
couldresultinimproperandinefcientoperationofthewaterheater,
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specicchangesthatmayberequiredinyourarea.
CLEARANCES
Minimum clearances between the water heater and combustible
constructionare0inchatthesidesandrear,4”(102mm)atthe
front,and6”(153mm)fromtheventpipe.Clearancefromthetop
ofthejacketis12”(305mm)onmostmodels.
FIGURE 2.
A gas water heater cannot operate properly without the correct
amountofairforcombustion.Donotinstallinaconnedareasuch
asacloset,unlessyouprovideairasshowninthe“LocatingThe
NewWaterHeater”section.Neverobstructtheow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 re or explosion and cause death, serious bodily injury, or
propertydamage.
FIGURE 3.
Ifthiswaterheaterwillbeusedinbeautyshops,barbershops,
cleaning establishments, or self-service laundries with dry
cleaning equipment, it is imperative that the water heater or
water heaters be installed so that combustion and ventilation
airbetakenfromoutsidetheseareas.
Propellantsofaerosolspraysandvolatilecompounds,(cleaners,
chlorinebasedchemicals,refrigerants,etc.)inadditiontobeing
highlyammableinmanycases,willalsochangetocorrosive
hydrochloricacidwhenexposedtothecombustionproductsof
thewaterheater.Theresultscanbehazardous,andalsocause
productfailure.

9
INSULATION BLANKETS
Do not obstruct water heater air intake
with insulating blanket.
Gas and carbon monoxide detectors
are available.
Install water heater in accordance with
the instruction manual.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Breathing Hazard - Carbon Monoxide Gas
Insulation blankets are available to the general public for
external use on gas water heaters but are not necessary
with these products. The purpose of an insulation blanket is
to reduce the standby heat loss encountered with storage
tankheaters.Thewaterheaterscoveredbythismanualmeet
or exceed the Energy Policy Act standards with respect to
insulation and standby heat loss requirements, making an
insulationblanketunnecessary.
Should you choose to apply an insulation blanket to this
heater,youshouldfollowtheseinstructions.SeetheFeatures
and Components section of this manual for identification
of components mentioned below. 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.
• DO NOTcoverthethermostatortheTemperature-
PressureReliefValve.
• DO NOTallowtheinsulationtocomewithin2inches(5
cm)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.
• DOobtainnewwarningandinstructionlabelsfromthe
manufacturer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the
combustionairflow.
HARD WATER
Wherehardwaterconditionsexist,watersofteningorthethreshold
type of water treatment is recommended. This will protect the
dishwashers,coffeeurns,waterheaters,waterpipingandother
equipment. See the Maintenance Section in this manual for
sedimentandlimescaleremovalprocedures.
CIRCULATION PUMPS
Acirculatingpumpisusedwhenasystemrequiresacirculating
loop or there is a storage tank used in conjunction with the
water heater. See Water Piping Diagrams in this manual for
installationlocationofcirculatingpumps.
SeetheCirculationPumpWiringDiagramsbelowforelectrical
hookup information. Install in accordance with the current
edition of the National Electrical Code, NFPA 70 or the
CanadianElectricalCode,CSAC22.1.
Allbronzeorstainlesssteelcirculatingpumpsarerecommended
forusedwithcommercialwaterheaters.
Somecirculatingpumpsaremanufacturedwithsealedbearings
anddonotrequirefurtherlubrication.Somecirculatingpumps
must beperiodicallyoiled.Refer to the pumpmanufacturer’s
instructionsforlubricationrequirements.
CIRCULATING PUMP WIRING DIAGRAM
STORAGE TANK OR BUILDING RECIRCULATION
FIELD SUPPLIED TEMPERATURE CONTROL
INSTALLED IN THE STORAGE TANK
OR CIRCULATING LOOP RETURN LINE
CIRC
PUMP
MOTOR
L1 HOT
L2 NEUTRAL
120 VAC
POWER
NOTE: USE SEPARATE 120 VAC POWER
SUPPLY FOR PUMP CIRCUIT. DO NOT
SHARE POWER WITH WATER HEATER AS THIS
MAY CAUSE ELECTRICAL LINE NOISE AND
LEAD TO ERRATIC CONTROL SYSTEM
OPERATION.
FIGURE 4.
CIRCULATING PUMP WIRING DIAGRAM
DISHWASHER LOOP WITH TOGGLE SWITCH
FIELD SUPPLIED TEMPERATURE
CONTROL INSTALLED IN THE
CIRCULATING LOOP RETURN LINE
DISHWASHER
TOGGLE
SWITCH
CIRC
PUMP
MOTOR
L1 HOT
L2 NEUTRAL
120 VAC
POWER
NOTE: USE SEPARATE 120 VAC POWER
SUPPLY FOR PUMP CIRCUIT. DO NOT
SHARE POWER WITH WATER HEATER AS
THIS MAY CAUSE ELECTRICAL LINE NOISE
AND LEAD TO ERRATIC CONTROL SYSTEM
OPERATION.
FIGURE 5.

10
GAS SUPPLY SYSTEMS
Low pressure building gas supply systems are dened as those
systemsthatcannotunderanycircumstancesexceed14”W.C.
(1/2PSIGauge).Thesesystemsdonotrequirepressureregulation.
Measurementsshouldbetakentoinsurethatgaspressuresarestable
andfallwithintherequirementsstatedonthewaterheaterratingplate.
readingsshould betaken withall gas burning equipment off(static
pressure)andwithallgasburningequipmentrunningatmaximumrate
(dynamicpressure).Thegassupplypressuremustbestablewithin1.5”
W.C.fromstatictodynamicpressuretoprovidegoodperformance.
Pressuredropsthatexceed1.5”W.C.maycauseroughstarting,noisy
combustionornuisanceoutages.Increasesorspikesinstaticpressure
duringoffcyclesmaycausefailuretoigniteorinseverecasesdamage
toappliancegasvalves.Ifyourlowpressuresystemdoesnotmeet
theserequirements,theinstallerisresponsibleforthecorrections.
HighPressurebuildingsupplysystemsusepressuresthatexceed
14” W.C. (1/2 PSI Gauge). These systems must use eld supplied
regulatorstolowerthegaspressuretolessthan14”W.C.(1/2PSI
Gauge).Appliancesrequiregasregulatorsthatareproperlysizedforthe
waterheaterinputanddelivertheratingplatespeciedpressures.Gas
supplysystemswherepressureexceeds5PSIoftenrequiremultiple
regulatorstoachievedesiredpressures.Systemsinexcessof5PSI
buildingpressureshouldbedesignedbygasdeliveryprofessionals
forbestperformance.Waterheatersconnectedtogassupplysystems
thatexceed14”W.C.(1/2PSIGauge)atanytimemustbeequipped
withagassupplyregulator.
GAS PRESSURE REQUIREMENTS
Naturalgasmodelsrequireaminimumgassupplypressureof4.5”
W.C.(1.12kPa).Propanegasmodelsrequireaminimumgassupply
pressure of 11” W.C. (2.74 kPa). The minimum supply pressure
is measured while gas is owing (dynamic pressure). The supply
pressure(dynamic)shouldneverfallbelowthespeciedminimum
supplypressure.Thesupplypressureshouldbemeasuredwithallgas
redappliancesconnectedtothecommonmainringatfullcapacity.If
thesupplypressuredropsmorethan1.5”W.C.(0.37kPa)asgasbegins
toowtothewaterheaterthenthesupplygassystemincludingthe
gaslineand/orthegasregulatormayberestrictedorundersized.See
SupplyGasregulatorsectionandGasPipingsectionofthismanual.
Thegasvalveonallmodelshasamaximumgassupplypressurelimit
of14”W.C.(3.48kPa)Themaximumsupplypressureismeasured
whilegasisnotowing(staticpressure).
SUPPLY GAS REGULATOR
Themaximumallowablegassupplypressureforthiswaterheater
is14.0inchesW.C.(3.48kPa).Installapositivelock-upgaspressure
regulatorinthegassupplylineifinletgaspressurecanexceed14.0
inchesW.C. (3.48kPa) atanytime. regulatorsmust be sized/used
accordingtomanufacturer’sspecications.
Ifapositivelock-upregulatorisrequiredfollowtheseinstructions:
1. Positivelock-upgaspressureregulatorsmustberatedatorabove
 theinputBtu/hrratingofthewaterheatertheysupply.
2. Positivelock-upgaspressureregulator(s)shouldbeinstalledno
 closerthan3feet(1meter)andnofartherthan8feet(2.4meters)
 ofequivalentlengthfromthewaterheater’sinletgasconnection.
3. Afterinstallingthepositivelock-upgaspressureregulator(s)aninitial
 nominalsupplypressuresettingof7.0”W.C.whilethewaterheater
 isoperatingisrecommendedandwillgenerallyprovidegood
 waterheateroperation.Someadditionadjustmentmayberequired
 latertomaintainasteadygassupplypressure.
4. When installing multiple water heaters in the same gas supply
 system it is recommended that individual positive lock-up gas
 pressureregulatorsbeinstalledateachunit.
MIXING VALVES
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
Children, the elderly and the physically
or mentally disabled are at highest risk
for scald injury.
Feel water before bathing or showering.
Temperature limiting devices such as
mixing valves must be installed when
required by codes and to ensure safe
temperatures at fixtures.
Waterheatedtoatemperaturewhichwillsatisfyclotheswashing,dish
washing,andothersanitizingneedscanscaldandcausepermanent
injuryuponcontact.Shortrepeatedheatingcyclescausedbysmall
hotwaterusescancausetemperaturesatthepointofusetoexceed
thewaterheater’stemperaturesettingbyupto20°F(11°C).
Somepeoplearemorelikelytobepermanentlyinjuredbyhotwater
than others. These include the elderly, children, the inrm and the
physically/mentally disabled. Table 2 shows the approximate time-
to-burnrelationshipfornormaladultskin.Ifanyoneusinghotwater
provided by the water heater being installed ts into one of these
groupsorifthereisalocalcodeorstatelawrequiringacertainwater
temperatureatthepointofuse,thenspecialprecautionsmustbetaken.
In addition to using the lowest possible temperature setting that
satisesdemandoftheapplicationaMixingValveshouldbeinstalled
atthewaterheaterorathotwatertapstofurtherreducesystemwater
temperature.SeeFigure6.
Mixing valves are available at plumbing supply stores. Consult
a Qualified Installer or ServiceAgency. Follow mixing valve
manufacturer’sinstructionsforinstallationofthevalves.
TABLE 2.
Water
Temperature°F
Timefor
1stDegreeBurn
(LessSevereBurns)
TimeforPermanentBurns
2nd&3rdDegree
(MostSevereBurns)
110
(normalshowertemp.)
116 (painthreshold)
116 35minutes 45minutes
122 1minute 5minutes
131 5seconds 25seconds
140 2seconds 5seconds
149 1second 2seconds
154 instantaneous 1second
(U.S.GovernmentMemorandum,C.P.S.C.,PeterL.Armstrong,Sept.15,1978)
HOT WATER
OUTLET
TO TANK
INLET
CHECK
VALVE
MIXING
VALVE
COLD
WATER
INLET
TEMPERED WATER
OUTLET
12” TO 15”
(30-38 cm)
CHECK
VALVE
FIGURE 6.
INSTALLATION REQUIREMENTS

11
WATER PIPING
WATER (POTABLE) HEATING AND SPACE HEATING
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mixingvalve
mustbeinstalled.PleaserefertoFigure2forsuggestedpiping
arrangement.
Thesewaterheaterscannotbeusedinspaceheatingapplications
only.
CLOSED WATER SYSTEMS
Water supply systems may, because of code requirements or
such conditions as high line pressure, among others, have
installed devices such as pressure reducing valves, check
valves,andbackflowpreventers.Devicessuchasthesecause
thewatersystemtobeaclosedsystem.
THERMAL EXPANSION
Aswaterisheated,itexpands(thermalexpansion).Inaclosed
systemthevolumeofwaterwillgrowwhenitisheated.Asthe
volumeofwatergrowstherewillbeacorrespondingincreasein
water pressure due to thermal expansion. Thermal expansion
cancauseprematuretankfailure(leakage).Thistypeoffailure
is not covered under the limited warranty. Thermal expansion
canalsocauseintermittentTemperature-PressureReliefValve
operation: water discharged from the valve due to excessive
pressurebuildup.Thisconditionisnotcoveredunderthelimited
warranty.TheTemperature-PressureReliefValveisnotintended
fortheconstantreliefofthermalexpansion.
A properly sized thermal expansion tank must be installed on
all closed systems to control the harmful effects of thermal
expansion.Contactalocalplumbingserviceagencytohavea
thermalexpansiontankinstalled.
FIGURE 7.
NOTE: To protect against untimely corrosion of hot and cold
waterttings,itisstronglyrecommendedthatdi-electricunions
orcouplingsbeinstalledonthiswaterheaterwhenconnectedto
copperpipe.
Figure 7 shows the typical attachment of the water piping to
thewaterheater.Thewaterheaterisequippedwith1.25”NPT
threadednipplewaterconnections.
TEMPERATURE-PRESSURE RELIEF VALVE
Explosion Hazard
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22-
CSA 4.4 and ASME code.
Properly sized temperature-
pressure relief valve must be
installed in opening provided.
Can result in overheating and
excessive tank pressure.
Can cause serious injury or death.
This water heater is provided with a properly rated/sized and
certied combination Temperature-Pressure Relief Valve (T&P
valve)bythemanufacturer.Thevalveiscertied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 newT&Pvalvemust meet therequirements of
localcodes,butnotlessthanacombinationTemperature-Pressure
ReliefValverated/sizedandcertiedas indicated intheabove
paragraph.Thenewvalvemustbemarkedwithamaximumset
pressurenottoexceedthemarkedhydrostaticworkingpressure
ofthewaterheater(150psi=1,035kPa)andadischargecapacity
notlessthanthewaterheaterBtu/hrorkWinputrateasshown
onthewaterheater’smodelratinglabel.

12
NOTE: In addition tothe factoryinstalledTemperature-Pressure
ReliefValve on thewater heater, each remotestorage tankthat
maybeinstalledandpipedtoawaterheatingappliancemustalso
have its own properly sized, rated and approved Temperature-
PressureReliefValveinstalled.Callthetollfreetechnicalsupport
phonenumberlistedonthebackcoverofthismanualfortechnical
assistanceinsizingaTemperature-PressureReliefValveforremote
storagetanks.
Forsafeoperation of thewaterheater, theTemperature-Pressure
ReliefValvemustnotberemovedfromitsdesignatedopeningnor
plugged.TheTemperature-PressureReliefValvemustbeinstalled
directlyintothettingofthewaterheaterdesignedforthereliefvalve.
Installdischargepipingsothatanydischargewillexitthepipewithin
6inches(15.2cm)aboveanadequateoordrain,orexternaltothe
building.Incoldclimatesitisrecommendedthatitbeterminatedat
anadequatedraininsidethebuilding.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feet(9.14m),oruseofmorethanfourelbowscan
causerestrictionandreducethedischargecapacityofthevalve.
No valve or other obstruction is to be placed between the
Temperature-PressureReliefValveandthetank.Donotconnect
dischargepipingdirectlytothedrainunlessa6”(15.2cm)airgapis
provided.Topreventbodilyinjury,hazardtolife,orpropertydamage,
therelief valvemust beallowed todischarge waterin adequate
quantitiesshouldcircumstancesdemand.Ifthedischargepipeis
notconnectedtoadrainorothersuitablemeans,thewaterow
maycausepropertydamage.
Water Damage Hazard
• Temperature-Pressure Relief Valve discharge
pipe must terminate at adequate drain.
CAUTION
T&P Valve Discharge Pipe Requirements:
• Shallnotbesmallerinsizethantheoutletpipesizeofthevalve,
orhaveanyreducingcouplingsorotherrestrictions.
• Shallnotbepluggedorblocked.
• Shallnotbeexposedtofreezingtemperatures.
• Shallbeofmateriallistedforhotwaterdistribution.
• Shallbeinstalledsoastoallowcompletedrainageofboththe
Temperature-PressureReliefValveandthedischargepipe.
• Mustterminateamaximumofsixinchesaboveaoordrain
orexternaltobuilding.Incoldclimates,itisrecommended
thatdischargepipebeterminatedatanadequatedraininside
building.
• Shallnothaveanyvalveorotherobstructionbetweenthe
reliefvalveandthedrain.
Burn hazard.
Hot water discharge.
Keep clear of Temperature-
Pressure Relief Valve
discharge outlet.
TheTemperature-PressureReliefValvemustbemanuallyoperated
atleasttwiceayear.Cautionshouldbetakentoensurethat(1)no
oneisin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inthismanual,andreplacetheTemperature-
PressureReliefValvewithaproperlyrated/sizednewone.
NOTE:ThepurposeofaTemperature-PressureReliefValveisto
preventexcessivetemperaturesandpressuresinthestoragetank.
The T&P valve is not intended for the constant relief of thermal
expansion.Aproperlysizedthermalexpansiontankmustbeinstalled
on all closed systems to control thermal expansion, see Closed
WaterSystemsandThermalExpansiononpage11.
If you do not understand these instructions or have any questions
regardingtheTemperature-PressureReliefValvecallthetollfreenumber
listedonthebackcoverofthismanualfortechnicalassistance.
FILLING THE WATER HEATER
Neverusethiswaterheaterunlessitiscompletelyfullofwater.To
preventdamagetothetank,thetankmustbelledwithwater.Water
mustowfromthehotwaterfaucetbeforeturning “ON” gas tothe
water heater.
Toll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.Toinsurecompletellingofthetank,allowairtoexitbyopeningthe
nearesthotwaterfaucet.Allowwatertorununtilaconstantowis
obtained.Thiswillletairoutofthewaterheaterandthepiping.
4. Checkallwater piping andconnectionsforleaks.Repairas
needed.
AIR REQUIREMENTS
Breathing Hazard - Carbon Monoxide Gas
Install water heater in accordance with
the Instruction Manual and NFPA 54 or
CAN/CSA-B149.1.
To avoid injury, combustion and ventilation
air must be taken from outdoors.
Do not place chemical vapor emitting
products near water heater.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
For safe operation an adequate supply of fresh uncontaminated air for
combustionandventilationmustbeprovided.
An insufcient supply of air can cause recirculation of combustion
products resulting in contamination that may be hazardous to life.
Suchaconditionoftenwillresultinayellow,luminousburnerame,
causingsootingofthecombustionchamber,burnersanduetubes
andcreatesariskofasphyxiation.
Donotinstallthewaterheaterinaconnedspaceunlessanadequate
supplyofairforcombustionandventilationisbroughtintothatspace
usingthemethodsdescribedintheConnedSpacesectionthatfollows.
Neverobstructtheowofventilationair.Ifyouhaveanydoubtsor
questionsatall,call yourgassupplier. Failuretoprovidetheproper

13
amountofcombustionaircanresultinareorexplosionandcauseproperty
damage,seriousbodilyinjuryordeath.
UNCONFINED SPACE
AnUnconfinedSpaceisonewhosevolumeisnotlessthan50
cubic feet per 1,000 Btu/hr (4.8 cubic meters per kW) of the
totalinputratingofallappliancesinstalledinthespace.Rooms
communicatingdirectlywiththespace,inwhichtheappliances
are installed, through openings not furnished with doors, are
consideredapartoftheunconfinedspace.
Makeupairrequirementsfortheoperationofexhaustfans,kitchen
ventilationsystems, clothes dryersand fireplaces shallalso be
considered in determining the adequacy of a space to provide
combustion,ventilationanddilutionair.
UNUSUALLY TIGHT CONSTRUCTION
Inunconfinedspacesinbuildings,infiltrationmaybeadequateto
provideairforcombustion,ventilationanddilutionoffluegases.
However,inbuildingsofunusuallytightconstruction(forexample,
weatherstripping,heavilyinsulated,caulked,vaporbarrier,etc.)
additionalairmustbeprovidedusingthemethodsdescribedin
theConfinedSpacesectionthatfollows.
CONFINED SPACE
AConnedSpaceisonewhosevolumeislessthan50cubicfeetper
1,000Btu/hr(4.8cubicmetersperkW)ofthetotalinputratingofall
appliancesinstalledinthespace.
Openingsmustbeinstalledtoprovidefreshairforcombustion,ventilation
and dilution in conned spaces. The required size for the openings is
dependentonthemethodusedtoprovidefreshairtotheconnedspace
andthetotalBtu/hrinputratingofallappliancesinstalledinthespace.
DIRECT VENT APPLIANCES
Appliances installed in a Direct Vent conguration that derive all
air for combustion from the outdoor atmosphere through sealed
intakeairpipingarenotfactoredinthetotalapplianceinputBtu/hr
calculationsusedtodeterminethesizeofopeningsprovidingfresh
airintoconnedspaces.
EXHAUST FANS
Whereexhaustfansareinstalled,additionalairshallbeprovided
toreplacetheexhaustedair.Whenanexhaustfanisinstalledin
thesamespacewithawaterheater,sufficientopeningstoprovide
freshairmustbeprovidedthataccommodatetherequirements
forallappliancesintheroomandtheexhaustfan.Undersized
openingswillcauseairtobedrawnintotheroomthroughthewater
heater’sventsystemcausingpoorcombustion.Sooting,serious
damagetothewaterheaterandtheriskoffireorexplosionmay
result.Itcanalsocreateariskofasphyxiation.
LOUVERS AND GRILLES
Thefreeareasofthefreshairopeningsintheinstructionsthatfollowdonot
takeintoaccountthepresenceoflouvers,grillesorscreensintheopenings.
Therequiredsizeofopeningsforcombustion,ventilationanddilution
airshallbebasedonthe“netfreearea”ofeachopening.Wherethe
freeareathroughadesignoflouverorgrilleorscreenisknown,itshall
beusedincalculatingthesizeofopeningrequiredtoprovidethefree
areaspecied.Wherethelouverandgrilledesignandfreeareaarenot
known,itshallbeassumedthatwoodlouverswillhave25%freearea
andmetallouversandgrilleswillhave75%freearea.Nonmotorized
louversandgrillesshallbexedintheopenposition.
FRESH AIR OPENINGS FOR CONFINED SPACES
The following instructions shall be used to calculate the size,
number and placement of openings providing fresh air for
combustion, ventilation and dilution in confined spaces. The
illustrationsshowninthissectionofthemanualareareference
for the openings that provide fresh air into confined spaces
only.Donotrefertotheseillustrationsforthepurposeofvent
installation. See Venting Installation on page 18 for complete
ventinginstallationinstructions.
OUTDOOR AIR THROUGH TWO OPENINGS
FIGURE 8.
The confined space shall be provided with two permanent
openings,onecommencingwithin12inches(300mm)ofthetop
andonecommencingwithin12inches(300mm)ofthebottomof
the enclosure. The openings shall communicate directly with the
outdoors.SeeFigure8.
Eachopeningshallhaveaminimumfreeareaof1squareinchper
4,000Btu/hr(550mm2perkW)oftheaggregateinputratingofall
appliancesinstalledintheenclosure.Eachopeningshallnotbeless
than100squareinches(645cm2).
OUTDOOR AIR THROUGH ONE OPENING
FIGURE 9.
Alternatively a single permanent opening, commencing within 12
inches(300mm)ofthetopoftheenclosure,shallbeprovided.See
Figure9.Thewaterheatershallhaveclearancesofatleast1inch
(25mm)fromthesidesandbackand6inches(150mm)fromthe
frontoftheappliance.Theopeningshalldirectlycommunicatewith
theoutdoorsorshallcommunicatethroughaverticalorhorizontalduct
totheoutdoorsorspacesthatfreelycommunicatewiththeoutdoors
andshallhaveaminimumfreeareaofthefollowing:
1. 1 square inch per 3000 Btu/hr (733 mm2 per kW) of the total
inputratingofallapplianceslocatedintheenclosure,and
2. Notlessthanthesumoftheareasofallventconnectorsin
thespace.

14
OUTDOOR AIR THROUGH TWO HORIZONTAL DUCTS
FIGURE 10.
Theconnedspaceshallbeprovidedwithtwopermanenthorizontal
ducts,onecommencingwithin12 inches (300mm)ofthetop and
one commencing within 12 inches (300 mm) of the bottom of the
enclosure.Thehorizontalductsshallcommunicatedirectlywiththe
outdoors.SeeFigure10.
Eachductopeningshallhaveaminimumfreeareaof1squareinch
per2,000Btu/hr(1100mm2perkW)oftheaggregateinputratingof
allappliancesinstalledintheenclosure.
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
dimensionofrectangularairductsshallbenotlessthan3inches.
OUTDOOR AIR THROUGH TWO VERTICAL DUCTS
The illustrations shown in this section of the manual are a
reference for the openings that provide fresh air into conned
spacesonly.
DO NOT refer to these illustrations for the purpose of vent
installation. See Venting Installation on page 18 for complete
ventinginstallationinstructions.
FIGURE 11.
Theconned space shall be providedwith two permanent vertical
ducts,onecommencingwithin12 inches (300mm)ofthetop and
one commencing within 12 inches (300 mm) of the bottom of the
enclosure. The vertical ducts shall communicate directly with the
outdoors.SeeFigure11.
Eachductopeningshallhaveaminimumfreeareaof1squareinch
per4,000Btu/hr(550mm2perkW)oftheaggregateinputratingof
allappliancesinstalledintheenclosure.
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
dimensionofrectangularairductsshallbenotlessthan3inches.
AIR FROM OTHER INDOOR SPACES
FIGURE 12.
Theconnedspaceshallbeprovidedwithtwopermanentopenings,
one commencing within 12 inches (300 mm) of the top and one
commencingwithin12inches(300mm)ofthebottomoftheenclosure.
SeeFigure12.
Eachopeningshallcommunicatedirectlywithanadditionalroom(s)
ofsufcientvolumesothatthecombinedvolumeofallspacesmeets
thecriteriaforanUnconnedSpace.
Eachopeningshallhaveaminimumfreeareaof1squareinchper
1,000Btu/hr(2200mm2perkW)oftheaggregateinputratingofall
appliancesinstalledintheenclosure.Eachopeningshallnotbeless
than100squareinches(645cm2).
VENTING

15
If the water heater is being installed as a replacement for an
existingheaterinpre-existingventing,athoroughinspectionof
existingventingsystemmustbeperformedpriortoanyinstallation
work.
VENT DAMPERS - Any vent damper, whether it is operated
thermally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lowfluegastemperature.Suchtemperaturesmay
not be high enough to properly open thermally operated vent
dampers.Thiswouldcausespillageofthefluegasesandmay
cause carbon monoxide poisoning. Vent dampers must bear
evidenceofcertificationascomplyingwiththecurrenteditionof
theAmericanNationalStandardA NSIZ 21.66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maybenecessary.Consultyourgassuppliertoaidyouin
determiningtheproperventingforyourwaterheaterfromthevent
tablesinthecurrenteditionoftheNationalFuelGasCodeANSI
Z223.1/NFPA 54 or the Natural Gas and Propane Installation
Code CAN\CSA B 149.1.
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chimneyorlistedventpipesystem,whichterminatestothe
outdoors. 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.
Alignthelegsofthedrafthoodwiththeslotsprovided.Insert
the legsandsecurethedrafthoodto thewater heater’stop
withthefourscrewsprovidedasshowninFigure13.Donot
alterthedrafthoodinanyway.Ifyouarereplacinganexisting
waterheater,besuretousethenewdrafthoodsuppliedwith
the water heater.
Obstructed or deteriorated vent systems may present serious
health risk or asphyxiation.
DRAFT HOOD
SHEET METAL SCREWS (FOUR PROVIDED)
LEGS
SLOT
INSTALL THE DRAFT HOOD WITH
THE FOUR SCREWS PROVIDED.
JACKET TOP
SLOT
LEGS
FIGURE 13.
The vent pipe from the water heater must be no less than the
diameter 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14.
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.
FIGURE 14.
Theremustbeaminimumof6”(153mm)clearancebetweensingle
wall vent pipe and any combustible material.  Fill and seal any
clearancebetweensinglewallventpipeandcombustiblematerial
withmortarmix,cement,orothernoncombustiblesubstance.For
other than single wall, follow vent pipe manufacturer’s clearance
specications.Toinsureatighttoftheventpipeinabrickchimney,
sealaroundtheventpipewithmortarmixcement.
Failure to have required clearances between vent piping and
combustiblematerialwillresultinarehazard.
Be sure vent pipe is properly connected to prevent escape of
dangerousue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 pool chemicals, calcium and sodium
chloride, waxes, bleach and process chemicals are typical
compoundswhicharepotentiallycorrosive.

16
GAS PIPING
Contact your local gas service company to ensure that adequate
gasserviceisavailableandtoreviewapplicableinstallationcodes
foryourarea.
SizethemaingaslineinaccordancewithTable3.Theguresshown
areforstraightlengthsofpipeat0.5in.W.C.pressuredrop,whichis
considerednormalforlowpressuresystems.Note:Fittingssuchas
elbows,teesandlineregulatorswilladdtothepipepressuredrop.
AlsorefertothecurrenteditionsoftheNationalFuelGasCode(NFPA
54)orNaturalGasandPropaneInstallationCode(CAN/CSAB149.1).
Makesuregassuppliedissametypelistedonmodelratingplate.The
inletgaspressuremustnotexceed14inchwatercolumn(2.6kPa)
fornaturalandpropane(L.P.)gas.Theminimuminletgaspressure
shownonratingplateisthatwhichwillpermitringatratedinput.
Ifthegascontrolvalveissubjectedtopressuresexceeding1/2pound
persquareinch(3.5kPa),thedamagetothegascontrolvalvecould
resultinare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.
Agaslineofsufcientsizemustberuntothewaterheater.Consult
thecurrenteditionofNationalFuelGasCodeANSIZ223.1/NFPA54
ortheNaturalGasandPropaneInstallationCodeCAN/CSAB149.1
andyourgassupplierconcerningpipesize.
Theremustbe:
• Areadily accessible manualshutoffvalveinthegas supply line
servingthewaterheater,and
• Asedimenttrapaheadofthegascontrolvalvetohelppreventdirt
andforeignmaterialsfromenteringthegascontrolvalve.
• Aexiblegasconnectororagroundjointunionbetweentheshut
offvalveandcontrolvalvetopermitservicingoftheunit.
Besuretocheckallthegaspipingforleaksbeforelightingthewater
heater.Useasoapywatersolution,notamatchoropename.Rinse
offsoapysolutionandwipedry.
The minimum inlet gas pressure shown on the rating plate is that
whichwillpermitringattheratedinput.
TABLE 3. GAS SUPPLY LINE SIZES (IN INCHES)*
MAXIMUM CAPACITY OF PIPE IN CUBIC FEET PER HOUR
LENGTH
IN
FEET
NOMINAL IRON PIPE SIZES ( INCHES )
INPUT IN THOUSANDS (BTU/HR)
1/2"3/4"1"1 1/4"1 1/2"2"2 1/2"3"4"
10 175 360 680 1400 2100 3960 6300 11000 23000
20 120 250 465 950 1460 2750 4360 7700 15800
30 97 200 375 770 1180 2200 3520 6250 12800
40 82 170 320 660 990 1900 3000 5300 10900
50 73 151 285 580 900 1680 2650 4750 9700
60 66 138 260 530 810 1520 2400 4300 8800
70 61 125 240 490 750 1400 2250 3900 8100
80 57 118 220 460 690 1300 2050 3700 7500
90 53 110 205 430 650 1220 1950 3450 7200
100 50 103 195 400 620 1150 1850 3250 6700
125 44 93 175 360 550 1020 1650 2950 6000
150 40 84 160 325 500 950 1500 2650 5500
175 37 77 145 300 460 850 1370 2450 5000
200 35 72 135 280 430 800 1280 2280 4600
TABLE 4.
LENGTH
IN
METERS
NOMINAL IRON PIPE SIZES ( INCHES )
INPUT IN KW
1/2"3/4"1"1 1/4"1 1/2"2"2 1/2"3"4"
351 105 199 410 615 1160 1845 3221 6735
635 73 142 278 428 805 1277 2255 4626
928 59 110 225 346 644 1031 1830 3748
12 24 50 94 193 290 556 878 1552 3192
15 21 44 83 170 264 492 776 1391 2840
18 19 40 76 155 237 445 703 1259 2577
21 18 37 70 143 220 410 659 1142 2372
24 17 35 64 135 202 381 600 1083 2196
27 16 32 60 126 190 357 571 1010 2108
31 15 30 57 117 182 337 542 952 1962
38 13 27 51 105 161 299 483 864 1757
46 12 25 47 95 146 278 439 776 1610
53 11 23 42 88 135 249 401 717 1464
61 10 21 40 82 126 234 375 688 1347
Usepipejointcompoundorteontapemarkedasbeingresistantto
theactionofpetroleum[Propane(L.P.)]gases.
Thewaterheateranditsgasconnectionmustbeleaktestedbefore
placingthewaterheaterinoperation.
The water heater and its individual shut-off valve shall be
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(3.5kPa).Itshallbeisolatedfromthegassupplypiping
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).
Connectingthegaspipingtothegascontrolvalveofthewaterheater
canbeaccomplishedbyeitherofthetwomethodsshowninFigures
15 and 16.
FIGURE 15. GAS PIPING WITH FLEXIBLE CONNECTOR.
FIGURE 16. GAS PIPING WITH ALL
BLACK IRON PIPE TO GAS CONTROL.

17
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
theFigures15and16.
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dir torforeignmaterialinthegassupplyline,
asedimenttrapmustbeincorporatedinthepiping.Thesediment
trapmustbereadilyaccessible.Installinaccordancewiththe
“GasPiping”section.RefertothecurrenteditionoftheNational
FuelGasCode,ANSIZ223.1/NFPA54ortheNaturalGasand
PropaneInstallationCodeCAN/CSAB149.1.

18
FLAMMABLE
WARNING:
If you do not follow these instructions exactly, a
fire or explosion may result causing property damage, personal
injury or loss of life.
BEFORE LIGHTING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES
A.
C.
D.
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.
LIGHTING INSTRUCTIONS
TOP KNOB
FIGURE 'A'
"OFF" POSITION
OFF
ON
PILOT
FIGURE 'B'
"PILOT" POSITION
OFF
ON
PILOT
FIGURE 'C'
"ON" POSITION
OFF
ON
PILOT
1. 2.
TO TURN OFF GAS TO APPLIANCE
S e t the t hermostat to lowest setting. Push gas control knob down slightly and turn clock-
wise to 'OFF'. Do not force. SEE FIGURE 'A'.
1.
10.
11.
12.
13.
2.
3.
5.
6.
7.
8.
9.
STOP! Read the safety information
above on this label.
Push the gas control knob down slightly and turn
clockwise to"OFF". SEE FIGURE 'A'.
NOTE: Knob cannot be turned from "PILOT" to"OFF"
unless knob is pushed down slightly. Do not force.
Wait five (5) minutes to clear out any gas. If you
then smell gas, STOP! Follow "B" in the
safety informationabove on this label. If
you do not smell gas,
go to next step.
This unit is equipped with a push button pilot ignitor,
on the gas control.
Continue tohold 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 step (3) through (9).
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 clockwise to'OFF' and
call your service technician or gas supplier.
SEE FIGURE 'A'
DANGER: Hotter water increases the risk
of scald injury. Consult the instruction
manual before changing temperature.
At arm's length away, turn gas control knob
counterclockwise to 'ON'. SEE FIGURE 'C'.
Set thermostat to desired setting.
Remove the outer door located below
the gas control unit.
4.
which is used to light the pilot. Locate the ignitor
Turn gas control knob counterclockwise
to "PILOT". SEE FIGURE 'B'.
Replace the outer door.
DIAL
KNOB
GAS CONTROL
THERMOSTAT
GAS CONTROL
PIEZO
IGNITOR
GENERATOR
The pilot is located on the left front corner of the burner.
It can be located by looking through the sight glass to
the left while pressing the piezo ignitor button
several times. Look for a spark at the pilot location
.
Once the pilot has been found, push the gas knob
all the way down. Immediately press the pilot ignitor
button rapidly (4) to (5) times. If the pilot does not
light, repeat step (3) through (9).
This appliance has a pilot which is lit by a piezo-
electric spark gas ignition system. When lighting
the pilot, follow these instructions exactly.
B.
BEFORE LIGHTING smell all around the
appliance area for gas. Be sure to smell next
to the floor because some gas is heavier than
air and will settle on the floor.
Use only your hand to push down or turn the gas
control knob. Never use tools. If the knob will
not push down or turn by hand, don't try to repair
it, call a qualified service technician. Force or
attempted repair may result in fire or explosion.
Do not use this appliance if any part has been
under water. Immediately contact a qualified
installer or service agency to replace a flooded
water heater. Do not attempt to repair the unit!
It must be replaced!
Set the thermostat to the lowest setting by turning
thermostat dial fully clockwise until it stops.
FOR YOUR SAFETY READ BEFORE LIGHTING
FIGURE "D"
PILOT
MAIN BURNER
THERMOCOUPLE &
BURNER TUBE

19
START UP CONDITIONS
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 as furnaces, clothes dryers, range hoods and
bathroomfans,amatchameshouldstillbedrawnintothedraft
hoodofthewaterheaterwithitsburnerring.Iftheame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willformwhiletheburnerison.Awaterheatermay
Shortrepeatedheatingcyclescausedbysmallhotwaterusescan
causetemperaturesat the pointofuse to exceedthethermostat
setting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neededforcleansing,cleaning,andsanitizing(bodies,dishes,
clothing). Untempered hot water can present a scald hazard.
Dependingonthetimeelement,andthepeopleinvolved(adults,
children, elderly, inrm, 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inrm,orphysically/mentally
handicapped.Ifanyoneusinghotwaterinyourhometsintooneof
thesegroupsorifthereisalocalcodeorstatelawrequiringacertain
temperaturewateratthehotwatertap,thenyoumusttakespecial
precautions. In addition to using the lowest possible temperature
settingthatsatisesyourhotwaterneeds,ameanssuchasamixing
valve should 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,seeFigure2.Follow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17and18.
TEMPERATURE REGULATION
FOR YOUR INFORMATION
appeartobeleakingwheninfactthewateriscondensation.This
usuallyhappenswhen:
a.Anewwaterheaterislledwithcoldwaterforthersttime.
b.Burninggasproduceswatervaporinwaterheaters,par ticularly
highefciencymodelswhereuetemperaturesarelower.
c.Largeamountsofhotwaterareusedinashorttimeandthe
rell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.
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( )indicativeofapproximately120°F(49°C)ispreferred
startingpoint.SomeStateshavearequirementforalowersetting.
Turn the water temperature dial clockwise (  ) to decrease the
temperature,orcounterclockwise( )toincreasethetemperature.
Shouldoverheatingoccurorthegassupplyfailtoshutoff,turnoffthe
manualgascontrolvalvetothewaterheater.
FIGURE 17.
Temperature Time to Produce 2nd & 3rd
VERY HOT = APPROX.180°F (82°C) Nearly instantaneous
D = APPROX.160°F (71°C) About 1/2 second
C = APPROX.150°F (65°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.100°F (37.8°C) - - - - - - - -
Setting Degree Burns on Adult Skin
FIGURE 18.

20
CHECKING GAS INPUT
Withthisheaterinoperation,determinewhetheritisreceivingthe
fullratedinputofgas.Thismaybedonebytimingthegasmeter
andmeasuringgaspressurewithagaugeormanometer.Whenthe
heaterisoperatingatfullcapacity(fullgasinput)itshouldconsume
approximately1cubicfootofgasinthetimeshowninTable5.
TABLE 5. INPUT CHECK TIME REQUIRED
TO CONSUME 1 CU. FT. OF GAS
Type of Gas BTU Per Cu. Ft. Approx. Time Required To
Consume 1 Cu. Ft. of Gas
Natural Propane 1050 2500 50.3sec.119.8sec.
Use this formula to “clock” the meter.  Be sure that other gas
consumingappliancesarenotoperatingduringthisinterval.
3,600XH=Btu/Hr
T
 T=Timeinsecondsneededtoburnonecubicfootofgas.
 H=HeatingvalueofgasinBtu’spercubicfootofgas.
 Btu/Hr=Actualheaterinputrate.
 Example:
 T=50.3seconds/ft3
 H=1,050Btu/ft3(naturalgas)
 Btu/Hr=?
3,600X1,050=75,100Btu/Hr(22.0kW)
50.3
Comparetheactualinputratetothatgivenontheheater’srating
plate.Intheexample,thefullinputrateshouldbe75,100Btu/Hr
fornaturalgas.
Because of the suddenness and amount of water, condensation
watermaybediagnosedasa“tankleak”.Afterthewaterinthetank
warmsup(about1-2hours),theconditionshoulddisappear.
Do not assume the water heater is leaking until there has been
enoughtimeforthewaterinthetanktowarmup.
Anundersizedwaterheaterwillcausemorecondensation.Thewater
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
springmonthswhenincomingwatertemperaturesareattheirlowest.
Goodventingisessentialforagasredwaterheatertooperateproperly
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.
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
duringheatingandcoolingperiodsandshouldbeconsiderednormal.
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sulde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.
Smellywatermaybeeliminatedorreducedinsomewaterheater
models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anAnodeReplacementKitand
thischlorinationtreatment.
Ifthesmellywaterpersistsaftertheanodereplacementandchlorination
treatment,wecanonlysuggestthatchlorinationoraeration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
ammable and explosive. To prevent the possibility of injury
under these conditions, we recommend the hot water faucet,
located farthest away, be opened 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hotwaterfaucet
isopened.Theremustbenosmokingoropenamenearthe
faucetatthetimeitisopen.
HIGH WATER TEMPERATURE SHUT OFF SYSTEM
Thiswaterheateris equippedwithanautomaticgasShut-off
system.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controlvalvemustbereplaced.Contact
yourgassupplierorserviceagency.Turn“OFF”theentiregas
supply to the water heater.