Sediment Trap; Gas Piping - Kenmore Powermiser 12 153.331761 Owner's Manual

Areadily a ccessible manual shut o ffvalve inthegassupply
line serving t hewater h eater, and
Adrip leg(sediment trap) ahead o fthe gas control valve t ohelp
prevent dirt a nd foreign materials from entering gas control valve.
pound p ersquare i nch (3.5 kPa).Itshould b eisolated from the
gassupply p iping s ystem byclosing itsindividual manual shut-off
valve during a ny pressure testing ofthe gas supply p iping s ystem
attest p ressures equal toorless than 1/2 pound p ersquare i nch
(3.5 kPa).
Aflexible g asconnector ora ground jointunion between the
shut offvalve and control valve topermit servicing ofthe unit.
Besuretocheck a llthegaspiping f orleaks b efore lighting t he
water h eater. Use a soapy w ater s olution, nota match o ropen
flame. R inse o ffsoapy s olution and wipe dry.
The minimum i nlet gaspressure shown o ntherating p late isthat
which w illpermit firing attherated input.
High altitude orifice must be installed
for operations above 7,700 ft. (2,347 m).
Contact a qualified installer or service
agency.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Water heaters covered in this manual have been tested and approved
for installation at elevations up to 7,700 feet (2,347 m) above sea
level. For installation above 7,700 feet (2,347 m), the water heater's
Btu input 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 the National Fuel Gas Code
ANSI Z223.1/NFPA 54. Contact your local gas supplier for further
information.
Failure to replace the standard orifice with the proper high altitude
orifice when installed at elevations above 7,700 feet (2,347 m)
could result in improper and inefficient operation of the appliance,
producing carbon monoxide gas in excess of the safe limits. This
could result in serious injury or death. Contact your local gas supplier
for any specific changes that may be required in your area.
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.
The appliance and its gas connection must be leak tested before
placing the appliance in operation.
The appliance and its individual shut-off valve should be
disconnected from the gas supply piping system during any
pressure testing d that system at test pressures in excess d 1/2
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
Fire and Explosion Hazard
Contaminants in gas lines can
cause fire or explosion.
Clean all gas piping before
installation.
Install drip leg in accordance with
NFPA54.
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 should be installed as close to the inlet d the
water heater as practical at the time d water heater installation. The
sediment trap should 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 should be installed in conformance with
one d the methods d installation, shown in Figures 20 and 21.
GROUND JOINT
" I -l-'_ GAS CONTROL
UNION
(OPTIONAL) _
3" MIN.'_
(76.2 ram) f
CAP
FIGURE 20. GAS PiPiNG WiTH FLEXIBLE CONNECTOR.
17
GROUND JOINT'_
UNION _ BLACK PiPE
(OPTIONAL)
0.7 °"
co2"oL
3" MI
(76.2 _ __ _ lSEOIMENT
TRAPt
CAP
FIGURE 21. GAS PIPING WITH ALL
BLACK iRON PiPE TO GAS CONTROL.