Gas Supply; Gas Piping - Kenmore 153.331350 Use & Care Manual

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.
A gas line of sufficient size must be run to the water
heater. Consult the current edition of National Fuel
Gas Code (ANSI Z223.1/NFPA 54) and your gas
supplier concerning pipe size.
There must be:
• A readily accessible manual shut-off valve in the
gas supply line serving the water heater, and
• A sediment trap (dirt leg) ahead of gas control
valve/thermostat to help prevent dirt and foreign
materials from entering the gas control valve/
thermostat.
• Aflexible gas connector or a ground joint union
between the shut-off valve and gas control
valve/thermostat to permit servicing of the unit.
Explosion Hazard
Havea qualified technicianmake sure that the L.P.
gas operating pressure does not exceed 13" water
column (3.237 kilopascals).
Failureto do so can result in death, explosion,or
fire.
Make sure the gas supplied is the same type listed
on the model rating plate. The inlet gas pressure
must not exceed 14 inch w.c. (3.5kPa) for natural
gas and propane gas. The minimum inlet gas
pressure shown on the rating plate is that which will
permit firing 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 fittings (except tin lined copper tubing) should
not be used.
If the gas control valve/thermostat is subjected to
pressures exceeding 1/2 psi (3.5kPa), the damage
to the gas control valve/thermostat could result in a
fire or explosion from leaking gas. If the main gas
line shut-off 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.
Connecting gas piping to the gas control valve/
thermostat of water heater can be accomplished by
either of two methods shown in Figures 13 and 14.
GROUND JOINT FLEX PIPE
UNION "_ I ./
(OPTIONA_
3" MIN. _ I I SEDIMENT TRAP GAS
(76mm} _ I I (DIRT LEG) CONTROL
T _ VALVE
CAP
Figure 13
GROUND JOIN1
UNION
(OPTIONAL)
CAP
Figure 14
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. Repair and
retest as required. When finished, rinse off soapy
solution and wipe dry.
2O