Manual

Installation Instructions (cont'd)
Venting (cont'd)
AWARNING
Chemical vapor corrosion of the flue and vent system
may occur if air for combustion containscertain chemical
vapors.Spray canpropellants, cleaningsolvents,refrigera-
tor and air conditioner refrigerants, swimming pool
chemicals, calcium and sodium chloride, waxes, bleach
and processchemicals are typical compounds which ar_
potentially corrosive.
Gas Piping ,
AWARNING
Make sore the gassuppliedisthe same type listedon the
model rating plate. The inlet gaspressuremustnot exceed
14incheswater column ½ pound per squareinch (3.SkPa).
The minimum inlet gas pressurelisted on the model rating
plateisfor the purposeofinputadjustment.
AWARNING I
Ifthe gascontrolvalveis subjectedto pressuresexceeding ½I
pound per squareinch(3.5kPa),the damageto the gascon-
trol valvecouldresultina fireor explosion from leakingge_
AWARNING
Ifthe main gasline shutoffsemng all gasappliancesis used,I
alsoturn "OFF" the gasat eachappliance.Leaveall gasappli-
ancesshutoffuntilthe water heaterinstallationis compete.
AWARNING [
The appliance and its gas connectionmust be leak tested
beforeplacingthe app ance noperation.
AWARNING
• The applianceand itsindividualshutoff valvemustbediscon-
nected from thegassupplypipingsystemduringanypressure
testing of the gassystemat test pressuresin excessof ½
poundper squareinch(3.5kPa_
• The appliancemustbeisolatedfromthegassupplypipingsys-
tem bydosingits individualmanualshutoff valveduringany
pressuretestingofthe gassupplypipingsystemat test pres-
suresequalor lessthan%poundper squareinch(3.SkPa).
A WARNING . I
Use pipe joint compound or teflon tape marked as being I
resistantto the acUonofpetroleum[Propane(L.P.)]gase_ J
A gas line of sufficient size must be run to the water heater•
Consult the latest edition of National Fuel Gas Code ANSI
Z223.1, also referredto as NFPA54 and the gas company concern-
ing pipe size.
There must be:
• A readilyaccessible manual shut off valvein.the gas supply line
serving the waterheater, and
• A dripleg (sediment trap) ahead of the gas control valveto help
prevent dirt and foreign materials from entering the gas control
Valve.
• A flexible gas connector or a ground joint union between the
shutoffvalve 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
flame. Rinse offsoapy solution and wipe dry.
SEDIMENT TRAP
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 nip-
ple in the bottom outlet or other device recognized as an effec-
tive sediment trap. If a tee fitting is used, it shall be installed in
conformance with one of the methods of installation shown
below.
GAS PIPING WITH
FLEXIBLE CONNECTOR
MANUAL
SHUTOFF
VALVE
GROUND JOINT
UNION(Optional)
3" rain.
LABELEDAS COMPLYING
WITH ANSI STANDING
LOOP
CONTROL
VALVE
(Sediment trap)
CAP
AWARNING
Contaminantsin the gaslinesmay causeimproperoperation
of the gascontrolvalvethat may resultin fire or explosion.
Beforeattachingthe gaslinebe surethat all gaspipeisclean
on the inside.To trap anydirt or foreignmaterialin the gas
supplyline, a drip leg (sometimes called a sediment trap)
must be incorporated in the piping. The drip leg must be
readilyaccessible.Installin accordancewith the "Gas Piping"
section.Referto the latest edition of the National FuelGas
Code,ANSI Z223.1,also referredto as NFPA 54.
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