Gas Piping; Venting - Kenmore THE ECONOMIZER 153.333931 Owner's Manual

Installation Instructions (cont'd)
Venting (cont'd)
AWARNING
Chemical vapor corrosion of the flue and vent system
may occur if air for combustion contains certain chemical
vapors. Spray can propellants, 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 gas supplied is the same type listedon the
model rating plate. The inlet gaspressuremust not exceed
14 incheswater column ½ pound per square inch (3.SkPa).
The minimum inlet gas pressurelisted on the model rating
plate isfor the purposeof inputadjustment.
AWARNING I
If the gascontrolvalveis subjected to pressures exceeding ½ I
pound per squareinch(3.5kPa), the damageto the gascon-
trol valvecouldresultin a fire or explosion from leakingge_
AWARNING
If the main gasline shutoffsemng all gasappliances is used,I
alsoturn "OFF" the gasat eachappliance.Leaveall gasappli-
ancesshutoffuntil the water heater installationis compete.
AWARNING [
The appliance and its gas connection must be leak tested
beforeplacingthe app ance n operation.
AWARNING
• The appliance and its individual s hutoff valvemust be discon-
nected from the gassupply piping systemduringanypressure
testing of the gassystem at test pressuresin excess of ½
poundper squareinch(3.5kPa_
• The appliance mustbe isolated from the gassupply piping sys-
tem by dosingits individual m anualshutoff valveduringany
pressure testingof the 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 readily accessible manual shut off valve in.the gas supply line
serving the water heater, and
• A drip leg (sediment trap) ahead of the gas control valve to help
prevent dirt and foreign materials from entering the gas control
Valve.
• 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.
LABELED AS COMPLYING
WITH ANSI STANDING
LOOP
CONTROL
VALVE
(Sediment trap)
CAP
AWARNING
Contaminantsin the gaslinesmay causeimproper operation
of the gascontrol valvethat may result in fire or explosion.
Beforeattachingthe gasline be surethat all gaspipeis clean
on the inside.To trap any dirt or foreignmaterial in the gas
supply line, 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.Refer to the latest edition of the National Fuel Gas
Code, ANSI Z223.1,also referredto as NFPA 54.
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