State Water Heaters RESIDENTIAL ELECTRIC WATER HEATER User manual

1
Instruction Manual
PRINTEDINTHE U.S.A 0905 PART NO. 185244-001
KEEPTHISMANUALINTHEPOCKETONHEATERFORFUTUREREFERENCE
WHENEVERMAINTENANCEADJUSTMENTORSERVICEISREQUIRED.
POWER VENTED GAS MODELS WITH HOT SURFACE IGNITION
NOTFORUSEINMANUFACTURED(MOBILE)HOMES
ALLTECHNICALAND WARRANTY QUESTIONS: SHOULDBEDIRECTEDTOTHELOCALDEALERFROMWHOMTHEWATERHEATERWAS
PURCHASED.IFYOUAREUNSUCCESSFUL,PLEASEWRITETOTHECOMPANYLISTEDONTHERATINGPLATEONTHEWATERHEATER.
RESIDENTIAL GAS WATER HEATERS
• For Your Safety •
ANODORANTISADDEDTOTHEGASUSED
BYTHISWATERHEATER.
C3 Technology® Gas Water Heaters meet the new
ANSI Z21.10.1 standard that deals with the accidental or
unintended ignition of flammable vapors, such as those
emitted by gasoline.
GAMA certification applies to
all residential gas water
heaters with capacities of 20
to100 gallonswith inputrating
of 75,000 BTU/Hr. or less.
500 Tennessee Waltz Parkway
Ashland City, TN 37015
www.statewaterheaters.com

2
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.
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.
IMPORTANTDEFINITIONS
•Qualified Installer: Aqualified installer musthave ability equivalent to a licensed tradesman in thefields of 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 also be familiar with the
designfeaturesanduseof flammable vapor ignition resistant water heaters, and have a thorough understanding of this
instructionmanual.
•ServiceAgency: Aservice agency alsomust have ability equivalent to a licensedtradesman in the fields of 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
understandingof this instruction manual, and beabletoperform repairs strictly in accordance withtheserviceguidelines
providedby the manufacturer.
•Gas Supplier: The Natural Gas or Propane Utility or service who supplies gas for utilization by the gas burning
appliances within this application. The gas supplier typically has responsibility for the inspection and code approval of
gas piping up to and including the Natural Gas meter or Propane storage tank of a building. Many gas suppliers also
offerserviceand inspection of appliances within the building.

3
GENERAL SAFETY

4
SAFEINSTALLATION,USEANDSERVICE...............................2
GENERALSAFETY .................................................................. 3
TABLEOFCONTENTS ..............................................................4
INTRODUCTION ........................................................................4
Preparing for the New Installation ...................................4
TYPICALINSTALLATION ...................................................... 5-6
LOCATINGTHENEWWATERHEATER .....................................7
Facts to ConsiderAbout Location ............................... 7-8
InsulationBlankets ...........................................................8
CombustionAir and Ventilation forAppliances
Located in Unconfined Spaces........................................8
CombustionAir and Ventilation forAppliances
Located in Confined Spaces ........................................ 8-9
INSTALLINGTHEWATERHEATER .........................................10
WaterPiping ..............................................................10-11
Temperature-Pressure Relief Valve............................... 11
GasPiping ...................................................................... 12
SedimentTraps .............................................................. 13
BlowerAssembly Installation ........................................ 13
Vent Pipe Connection to BlowerAssembly ...................14
Venting and Installation ............................................ 14-15
LIGHTING&OPERATINGLABEL ............................................ 20
TEMPERATUREREGULATION ................................................21
FORYOURINFORMATION .....................................................22
Start Up Conditions ........................................................ 22
Condensate .................................................................... 22
Smoke/Odor....................................................................22
ThermalExpansion ......................................................... 22
Strange Sounds..............................................................22
OperationalConditions................................................... 22
SmellyWater ..................................................................22
“Air” in Hot Water Faucets.............................................22
High Temperature Shut Off System ...............................22
PERIODICMAINTENANCE .......................................................23
Venting System Inspection ............................................23
Burner Inspection ...........................................................23
BurnerCleaning.............................................................. 23
Housekeeping .......................................................... 23-24
Anode Rod Inspection.................................................... 24
Temperature-Pressure Relief Valve Operation..............24
Draining ..........................................................................24
Drain Valve Washer Replacement ........................... 24-24
Service ...........................................................................25
LEAKAGECHECKPOINTS ......................................................25
REPAIRPARTS .......................................................................26
TROUBLESHOOTING ........................................................ 27-28
NOTES .............................................................................. 29-30
WARRANTY ...........................................................................31
Thank You for purchasing this water heater. Properly installed and
maintained,it should give you years of trouble freeservice.
AbbreviationsFoundIn ThisInstructionManual:
• CSA-Canadian StandardsAssociation
• ANSI-AmericanNationalStandardsInstitute
• NFPA-NationalFire ProtectionAssociation
• ASME-American SocietyofMechanicalEngineers
• GAMA-GasApplianceManufacturer’sAssociation
• UL- Underwriters Laboratories Inc.
This gas-fired water heater is design certified by Underwriters
LaboratoriesInc. underAmericanNational Standard/CSAStandardfor
GasWaterHeatersANSIZ21.10.1 •CSA4.1(current edition).
PREPARINGFOR THE INSTALLATION
1. Readthe “General Safety” section, page 3 of this manual first and
thenthe entiremanual carefully. Ifyoudon’t followthesafety rules,
thewaterheaterwillnotoperate properly. It could cause DEATH,
SERIOUSBODILYINJURYAND/ORPROPERTYDAMAGE.
Thismanualcontains instructionsfor theinstallation, operation,and
maintenanceofthegas-firedwaterheater. Italso containswarnings
throughout the manual that you must read and be aware of. All
warningsand all instructions are essential to the proper operation
ofthewater heaterand yoursafety. Since wecannot puteverything
on the first few pages, READ THE ENTIRE MANUAL BEFORE
ATTEMPTINGTOINSTALLOROPERATETHEWATERHEATER.
2. The installation must conform with these instructions and the local
code authority having jurisdiction. In the absence of local codes,
installationsshallcomplywiththeNationalFuelGasCodeANSIZ223.1/
NFPA54andtheNationalElectricalCode,NFPA70.Thesepublications
are available from The National Fire Protection Association, 1
BatterymarchPark,Quincy,MA02269.
3. Thewater heater when installed must be grounded inaccordance
withthe local codes,orin the absenceoflocal codes: In theUnited
States,theNationalElectricCode.ANSI/NFPA70.
4. If after reading this manual you have any questions or do not
understandanyportionoftheinstructions,callthelocalgasutilityor
themanufacturer whose name appearson the rating plate.
5. Carefullyplanthe placewhereyouaregoingtoputthe waterheater.
Correct combustion,vent action,and ventpipe installationare very
important in preventing death from possible carbon monoxide
poisoningand fires, see Figures 1 and2.
Examinethe location to ensure the waterheatercomplies with the
“Locatingthe New WaterHeater” section inthis manual.
6. ForCaliforniainstallationthiswaterheatermustbebraced,anchored,
or strapped to avoid falling or moving during an earthquake. See
instructionsfor correctinstallation procedures. Instructionsmay be
obtained from California Office ofthe StateArchitect, 400 P Street,
Sacramento,CA95814.
7. Massachusetts Code requires this water heater to be installed in
accordancewithMassachusetts248-CMR2.00:StatePlumbingCode
and248-CMR5.00.
8. Complieswith SCAQMD rule#1121anddistrictshaving equivalent
NOxrequirements.
INTRODUCTION
TABLE OF CONTENTS

5
TYPICAL INSTALLATION
GET TO KNOW YOUR WATER HEATER - GAS MODELS
A Vent Pipe–Exhaust
B Vent Terminal
C Vent Adapter-Rubber Boot
D Blower Assembly
E Cold Water Inlet
F Inlet Water Shut-off Valve
G Union
H Inlet Dip Tube
J Anode**
FIGURE1.
K Hot Water Outlet
L Outlet Receptacle (115 VAC)
M Temperature-Pressure Relief Valve
N Flue
O Flue Baffle Assembly**
P Insulation
Q Control Harness
R Rating Plate
S Gas Supply
T Manual Gas Shut-off Valve
U Ground Joint Union
V Drip Leg (Sediment Trap)
W Drain Valve
X Gas Valve-Thermostat
Y Drain Pan
Z Air Intake Screen - Base Pan
AA Inner Door
BB Outer Door
CC HSI Burner Assembly
DD Air Intake Screen -
Blower Assembly
EE FV Sensor Assembly
NATURALHOTSURFACEIGNITER & MAIN BURNER
HOT
SURFACE
IGNITOR
SENSOR
PROPANEHOTSURFACEIGNITER & MAIN BURNER
TEMPERATUREINDICATORS
TEMPERATUREADJUSTMENT BUTTONS
HOT
SURFACE
IGNITOR
SENSOR
*CAUTION: 115 VAC IN CONTROLHARNESS
AND INSIDE OUTER DOOR
* ALL PIPING MATERIALS TO BE SUPPLIED BY CUSTOMERS.
** LOCATED UNDER THE BLOWER ASSEMBLY.
GAS MODELS
WITH HOT SURFACE IGNITION
& 2", 3" OR 4" PVC VENT CAPABILITY

6
TYPICAL INSTALLATION
FIGURE2.
MIXING VALVE USAGE
Thisappliance has been design certified as complying withAmerican
NationalStandard/CSAStandardforwaterheaters and is considered
suitablefor:
Water (Potable) Heating and Space Heating: All models are
consideredsuitable for water (potable) heatingandspace heating.
HOTTERWATERCANSCALD:
Water heaters are intended to produce hot water. Water heated to a
temperature which will satisfy space heating, clothes washing, dish
washing,and other sanitizingneeds can scaldand 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 at the hot
watertap, thenyoumust takespecialprecautions. In additiontousing
the lowest possible temperature setting that satisfies your hot water
needs, a means such as a *Mixing Valve, shall be used at the hot
watertapsused by these peopleor at the water heater. Mixing valves
areavailableatplumbingsupplyorhardwarestores. ConsultaQualified
Installer or Service Agency. Follow mixing valve manufacturer’s
instructionsfor installation of the valves. Before changing the factory
settingonthe thermostat,readthe “TemperatureRegulation”sectionin
thismanual, see Figure 20.

7
FACTSTO CONSIDERABOUT THELOCATION
Carefullychooseanindoor locationfor thenew waterheater,because
the placement is a very important consideration for the safety of the
occupantsinthebuildingandforthemosteconomicaluseoftheappliance.
This water heater is not for use in manufactured (mobile) homes
or outdoor installation.
Whetherreplacing an old waterheater or putting thewaterheater in a
newlocation,thefollowing criticalpoints mustbe observed:
1. Selectalocation indoorsasclose aspracticaltotheventterminalor
locationtowhichthewaterheaterventpipingisgoingtobeconnected,
andas centralizedwith the waterpiping systemaspossible.
2. Selected location must provide adequate clearances for servicing
andproper operationof thewaterheater.
Installationofthewater heatermustbeaccomplishedinsucha manner
that if the tank or any connections should leak, the flow will not cause
damagetothestructure. For thisreason,it isnotadvisabletoinstallthe
waterheater inan attic orupper floor. Whensuch locations cannotbe
avoided,asuitabledrainpanshouldbeinstalledunderthewaterheater.
Drainpansareavailableatyourlocalhardwarestore. Suchadrainpan
musthaveaminimumlengthandwidthofatleast2"(5.1cm)greaterthat
thewater heaterdimensions and mustbe piped toan adequate drain.
Thepanmustnotrestrict combustionair flow.
Water heater life depends upon water quality, water pressure and the
environment in which the water heater is installed. Water heaters are
sometimesinstalled inlocations whereleakagemay resultin property
damage, even with the use of a drain pan piped to a drain. However,
unanticipateddamagecanbereducedorpreventedbyaleakdetectoror
watershut-offdeviceusedinconjunction withapiped drainpan.These
devices are available from some plumbing supply wholesalers and
retailers,and detectand reactto leakageinvarious ways:
• Sensorsmountedinthedrainpanthattriggeranalarmorturnoffthe
incomingwater tothe waterheaterwhen leakageis detected.
• Sensorsmountedin thedrainpanthatturn offthewatersupplyto the
entirehome whenwater isdetected inthedrain pan.
• Water supply shut-off devices that activate based on the water
pressure differential between the cold water and hot water pipes
connectedto thewater heater.
• Devicesthatwill turnoff thegas supplyto agas waterheater whileat
thesame timeshutting off itswater supply.
INSTALLATIONSINAREASWHEREFLAMMABLELIQUIDS(VAPORS)
ARELIKELYTOBEPRESENTORSTORED(GARAGES,STORAGEAND
UTILITYAREAS,ETC.):Flammableliquids(suchasgasoline,solvents,
propane(LPorbutane, etc.)andothersubstances(suchasadhesives,
etc.)emitflammablevaporswhichcanbeignitedbyagaswaterheater’s
hotsurfaceigniter ormain burner. Theresulting flashbackand firecan
cause death or serious burns to anyone in the area. This water is
equipped with a FV sensor for detecting the presence of flammable
vapors, see Figure 3. When the sensor detects those vapors, the unit
willshutdown andnot operate.Should thishappen, pleaserefer tothe
troubleshootingguideonpages27-28. Eventhoughthiswaterheateris
a flammable vapors ignition resistant water heater and is designed to
reduce the chances of flammable vapors being ignited, gasoline and
otherflammablesubstancesshouldneverbestoredorusedinthesame
vicinity or area containing a gas water heater or other open flame or
sparkproducingappliance.
LOCATING THE NEW WATER HEATER
FIGURE3.
Also, the water heater must be located and/or protected so it is not
subjecttophysicaldamage byamovingvehicle.
Thiswaterheatermust notbeinstalled directlyoncarpeting. Carpeting
mustbeprotectedbymetalorwoodpanelbeneaththeapplianceextending
beyondthefullwidthanddepthoftheappliancebyatleast3"(7.6cm)in
any direction, or if the appliance is installed in an alcove or closet, the
entirefloormustbe coveredby thepanel. Failure toheed thiswarning
mayresult ina firehazard.
Minimum clearances between the water heater and combustible
constructionare0 inchatthesidesand rear,5"(12.7 cm)from thefront

8
and 12" (30.5 cm) from the top. (Standard clearance.) If clearances
statedontheheaterdifferfromstandardclearances,installwaterheater
accordingtoclearancesstatedon theheater.
Adequateclearance forservicing thisappliance shouldbeconsidered
beforeinstallation,such aschanging theanodes, etc.
A minimum clearance of 5" (12.7 cm) must be allowed for access to
replaceablepartssuch asthe thermostats,drainvalveandreliefvalve.
Wheninstallingtheheater,considerationmustbegiventoproperlocation.
Locationselected shouldbeas closetothe wallaspracticable andas
centralizedwith thewater pipingsystemas possible.
FIGURE4.
Agaswater heatercannotoperate properlywithout thecorrectamount
ofairfor combustion. Donot installinaconfinedarea suchas acloset,
unless you provide air as shown in the “Locating The New Water
Heater”section. Never obstruct theflow of ventilation air. Ifyou have
anydoubtsorquestions atall, callyour gassupplier. Failureto provide
the proper amount of combustion air can result in a fire or explosion
andcause death, seriousbodilyinjury,or propertydamage.
FIGURE5.
Ifthiswaterheater willbeusedinbeautyshops,barber shops,cleaning
establishments,or self-servicelaundries withdry cleaningequipment,
it is imperative that the water heater or water heaters be installed so
thatcombustion andventilation airbetaken fromoutside these areas.
Propellants of aerosol sprays and volatile compounds, (cleaners,
chlorinebased chemicals,refrigerants, etc.)in additionto beinghighly
flammableinmany cases,will alsoreacttoformcorrosive hydrochloric
acid when exposed to the combustion products of the water heater.
Theresults can be hazardous, and also cause product failure.
INSULATION BLANKETS
Insulationblankets areavailableto thegeneralpublic for externaluse
ongas water heatersbutare not necessarywiththese products. The
purpose of an insulation blanket is to reduce the standby heat loss
encountered with storage tank heaters. Your water heater meets or
exceedsthe NationalAppliance Energy ConversationAct standards
withrespect to insulation and standby loss requirements, making an
insulationblanket 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
resultingin fire, asphyxiation, seriouspersonalinjury 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 outer door, thermostat or temperature& pressure
reliefvalve.
•Do not allow insulation to come within 2" (5.1 cm) of the floor to
preventblockage 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.
•Doobtainnew warningand instructionlabels fromthemanufacturer
forplacement on theblanket directly overtheexisting labels.
•Do inspect the insulation blanket frequently to make certain it
doesnot sag, thereby obstructing combustion air flow.
COMBUSTIONAIRAND VENTILATION FOR
APPLIANCESLOCATEDINUNCONFINED SPACES
UNCONFINED SPACE is space whose volume is not less than
50cubic feet per 1,000 Btu per hour (4.8 cubic meters per kW) of the
aggregateinputratingof allappliances installedin thatspace. Rooms
communicating directly with the space in which the appliances are
installed,through openingsnot furnishedwith doors,are considered a
partoftheunconfinedspace.
Inunconfinedspacesinbuildings,infiltrationmaybeadequatetoprovide
airfor combustion, ventilation and dilution offluegases. However,in
buildingsof tightconstruction(for example, weatherstripping, heavily
insulated,caulked,vaporbarrier,etc.), additional air may need to be
providedusingthemethodsdescribedin“CombustionAirandVentilation
forAppliancesLocated in Confined Spaces.”
COMBUSTIONAIRAND VENTILATION FOR
APPLIANCESLOCATEDIN CONFINEDSPACES
CONFINEDSPACEis aspacewhosevolume islessthan 50cubicfeet
per1,000Btu perhour (4.8cmperkW) oftheaggregateinput ratingof
allappliances installedin thatspace.

9
Chemicalvaporcorrosionoftheflue,blowerassemblyandventsystem
may occur if air for combustion contains certain chemical vapors.
Spraycanpropellants,cleaningsolvents,refrigeratorandairconditioner
refrigerants,swimming pool chemicals,calcium and sodiumchloride,
waxes,bleachandprocesschemicalsaretypicalcompoundswhich
arepotentially corrosive.
A. ALLAIR FROM INSIDEBUILDINGS:(SeeFigure5and6)
The confined space shall be provided with two permanent openings
communicatingdirectlywithan additionalroom(s) ofsufficient volume
so that the combined volume of all spaces meets the criteria for an
unconfinedspace. Thetotalinputofallgasutilizationequipmentinstalled
inthecombinedspaceshallbeconsideredinmakingthisdetermination.
Eachopeningshall have a minimum free area of one square inch per
1,000Btuperhour(22cm2/kW)ofthetotalinputratingofallgasutilization
equipmentin theconfined space, butnot less than100 square inches
(645 cm2). One opening shall commence within 12 inches
(31cm)of thetopand onecommencingwithin 12inches(31cm)of the
bottomofthe enclosures.
FIGURE6.
B.ALL AIR FROMOUTDOORS:(SeeFigures7,8and9)
Theconfined space shall be provided with two permanent openings,
one commencing within 12 inches (31 cm) of the top and one
commencingwithin12inches(31cm) fromthebottomoftheenclosure.
Theopeningsshallcommunicatedirectly,orbyducts,withtheoutdoors
orspaces(crawlorattic)thatfreelycommunicate with the outdoors.
1. Whendirectlycommunicating withtheoutdoors,eachopeningshall
haveaminimumfree area of 1 square inch per 4,000 Btu per hour
(5.5 cm2/kW)oftotal inputratingof allequipmentin theenclosure,
seeFigure7.
FIGURE7.
2. Whencommunicatingwiththe outdoorsthroughverticalducts,each
openingshallhaveaminimumfreeareaof 1square inchper 4,000
Btuperhour (5.5cm2/kW)of totalinputratingof allequipmentin the
enclosure,see Figure 8.
3. Whencommunicating with the outdoors through horizontalducts,
eachopening shallhavea minimum freearea of 1square inch per
2,000Btuperhour (11cm2/kW))of totalinput ratingofallequipment
inthe enclosure, seeFigure 9.
FIGURE8.
4. When ducts are used, they shall be of the same cross-sectional
areaas the free area of the openings to which they connect. The
minimumshort sidedimension of rectangularair ducts shallnot be
lessthan 3 inches (7.6 cm), see Figure 9.
FIGURE9.
5. LouversandGrilles:In calculatingfree area,consideration shallbe
givento the blockingeffect of louvers,grillesor screens protecting
openings. Screens used shall not be smaller than 1/4 inch
(6.4mm) mesh. If thefree area through adesign of louverorgrille
isknown, itshould beused incalculating thesizeopening required
toprovide thefree areaspecified. Ifthe designand freeareais not
known,it maybe assumedthatwood louverswill be20-25percent
freearea andmetal louversand grilleswill have 60-75percent free
area. Louvers and grilles shall be fixed in the open position or
interlockedwiththeequipmentsothattheyareopenedautomatically
duringequipmentoperation.
6. SpecialConditionsCreatedbyMechanicalExhaustingorFireplaces:
operation of exhaust fans, ventilation systems, clothes dryers or
fireplacesmaycreate conditionsrequiringspecial attentiontoavoid
unsatisfactoryoperation ofinstalled gas utilizationequipment.

10
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.
Thisisanunacceptable conditionandmust becorrected.
Itisrecommendedthat anydevicesinstalled whichcouldcreateaclosed
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. Contactthe local watersupplier and/oraservice agencyfor
assistanceincontrollingthesesituations.
NOTE:To protectagainst untimelycorrosion of hot and cold water
fittings, it is strongly recommended that di-electric unions or
couplings be installed on this water heater when connected to
copper pipe.
AllgaspipingmustcomplywithlocalcodesandordinancesorwiththeNational
FuelGasCode(ANSIZ223.1/NFPA-54)whicheverapplies.Copperandbrass
tubingandfittings(excepttinlinedcoppertubing)shallnotbeused.
FIGURE10.
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,cleaningandothersanitizingneedscanscaldandpermanently
injureyouuponcontact. Somepeoplearemorelikelytobepermanently
injuredbyhot waterthanothers. Theseincludethe elderly,children, the
infirm,orphysically/mentally handicapped. Ifanyone usinghot waterin
yourhomefits intoone ofthese groupsor ifthere isa localcode orstate
lawrequiring acertain temperaturewaterat thehot watertap,then you
musttake special precautions. In addition to using thelowestpossible
temperaturesettingthatsatisfiesyourhotwaterneeds,ameanssuchas
a*mixingvalve,shallbeusedatthe hotwatertapsused bythesepeople
or at the water heater, see Figure 2. Valves for reducing point of use
temperaturebymixing coldandhot waterarealsoavailable:
Consulta QualifiedInstalleror ServiceAgency. Follow manufacturer’s
instructions for installation of the valves. Before changing the factory
settingonthethermostat,read the“Temperature Regulation”sectionin
thismanual.
This water heater shall not be connected to any heating systems or
component(s)usedwith anon-potable waterheating appliance.
Allpipingcomponentsconnectedtothisunitforspaceheatingapplications
shallbe suitable forusewith potable water.
Toxic chemicals, such as those used for boiler treatment shall not be
introducedintothissystem.
Whenthesystemrequireswaterforspaceheatingattemperatureshigher
thanrequired for domestic water purposes, atemperingvalve must be
installed. PleaserefertoFigure2forsuggestedpipingarrangement.
Watersupplysystemsmay,becauseofsucheventsashighlinepressure,
frequent cut-offs, the effects of water hammer among others, have
installeddevicessuch aspressure reducingvalves, checkvalves, back
flow preventers, etc. to control these types of problems. When these
devicesarenotequippedwithaninternalby-pass,andnoothermeasures
aretaken,thedevices causethe watersystem tobeclosed. Aswateris
heated,itexpands(thermalexpansion)andclosedsystemsdonotallow
for the expansion of heated water.
INSTALLING THE NEW WATER HEATER