American Water Heater American Water Heaters Residential Gas Water Heater Water Heater User Manual


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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.
CAUTION
• Temperature-Pressure Relief Valve discharge
pipe must terminate at adequate drain.
Water Damage Hazard
T&P Valve Discharge Pipe Requirements:
• Shouldnotbesmallerinsizethantheoutletpipesizeofthevalve,or
have any reducing couplings or other restrictions.
• Shouldnotbepluggedorblocked.
• Shouldnotbeexposedtofreezingtemperatures.
• Shouldbeofmateriallistedforhotwaterdistribution.
• Should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 the building. In cold climates, it is recommended that the discharge
pipe be terminated at an adequate drain inside the building.
• Shouldnothaveanyvalveorotherobstructionbetweentherelief
valve and the drain.
DANGER
• 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 14 and 15.
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.
HIGH ALTITUDE INSTALLATION
Thisheaterisapprovedforoperationupto5,300feet(1,615m)
without alteration. High altitude models are available from the factory
forelevationsbetween5,300feet(1,615m)and10,100feet(3,079
m).Forelevationsabove10,100feet(3,079m)theinputrating
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NationalFuelGasCode(ANSIZ223.1/NFPA54).
Contact your local gas supplier for further information.
Failuretoreplacestandardoricewithahighaltitudeoricewhen
installedabove10,100feet(3,079m)couldresultinimproperand
inefcientoperationoftheappliance,producingcarbonmonoxide
gas in excess of safe limits, which could result in serious injury or
death.Contactyourgassupplierforanyspecicchangeswhich
may be required in your area.
GAS PIPING
Fire and Explosion Hazard
Do not use water heater with any
gas other than the gas shown on
the rating plate.
Excessive pressure to gas control
valve can cause serious injury or death
Turn off gas lines during installation.
Contact qualified installer or
service agency.
Make sure the gas supplied is the same type listed on the model
rating plate. The inlet gas pressure must not exceed 14 inch water
column(3.5kPa)fornaturalandpropanegas(L.P.).Theminimum
inlet gas pressure shown on the rating plate is that which will permit
ringatratedinput.
All gas piping must comply with local codes and ordinances or with the
NationalFuelGasCode(ANSIZ223.1/NFPA-54).Copperorbrass
tubingandttings(excepttinlinedcoppertubing)shouldnotbe
used.
If the gas control valve is subjected to pressures exceeding 1/2 psi
(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 Shuttoff 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.
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