Sediment Trap - Kenmore 153.331760 Owner's Manual

• 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
shut off valve 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 off soapy solution and wipe dry.
The minimum inlet gas pressure shown on the rating plate is
that which will permit firing at the rated input.
If a standard model is installed above 2,000 feet (610 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 orifice in accordance with National Fuel Gas Code
ANSI Z223.1/NFPA 54. Contact your local Sears Service
Center or local gas supplier for further information.
Failure to replace the standard orifice with a high altitude
orifice when installed at elevations above 2,000 feet (610 m)
could result in improper and inefficient operation of the
appliance, producing carbon monoxide gas in excess of safe
limits, which could result in serious injury or death. Contact
your local Sears Service Center or local gas supplier for any
specific changes which may be required in your area.
The appliance and its gas connection must be leak tested before
placing the appliance in operation.
The appliance and its individual shut-off 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 closing its individual manual shut-off 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 20 and 21.
Sediment Traps
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 all 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 current
edition of the National Fuel Gas Code, ANSI Z223.1/NFPA 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 20 and 21.
FIGURE 20. GAS PIPING WITH FLEXIBLE CONNECTOR.
FIGURE 21. GAS PIPING WITH ALL
BLACK IRON PIPE TO GAS CONTROL.
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