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carbonmonoxidegasin excessofsafelimits,whichcould
resultinseriousinjuryordeath.ContactyourlocalSearsService
Centerorlocalgassupplierforanyspecificchangeswhich
mayberequiredinyourarea.
Fire and Explosion Hazard
, Use joint compound or tape
corn patible with propane.
• Leak test before operating
heater.
, Disconnect gas piping and
shut-off valve before pressure
testi ng system
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 al! gas pipe is clean
on the inside. To trap any dirt or foreign material in the gas
supply line, a drip leg (sometimes called a sediment trap)
must be incorporated in the piping. The drip leg must be readily
accessible. Install in accordance with the Gas Piping section.
Refer to the latest edition of the National Fuel Gas Code,
ANSI Z223.11NFPA 54.
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 Figures 19 and 20.
Use pipe joint compound or teflon tape marked as being
resistant to the action of petroleum (Propane [LR]) gases.
The appliance and its gas connection must be leak tested
before placing the appliance in operation.
The appliance and its individual shutoff 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 c!osing its individual manual
shutoff 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 19 and 20.
Sediment Traps
Fire and Explosion Hazard
, Contaminants in gas lines can
cause fire or exp!osion.
• Clean all gas piping before
installation.
• Install drip leg in accordance
with NFPA 54.
CAP
FIGURE 19. GAS PIPING WITH FLEXIBLE CONNECTOR.
CAP
FIGURE 20. GAS PmPINGWITH ALL
BLACK IRON PIPETO GAS CONTROL.
17
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