Gas Piping WARNING
Make sure the gassuppl!ed is the same type listed on the
modelrating plate./ne Jme[gas pressuremust not exceed14
inches water column [I/2pound persquare inch (3.5kPa)].
The minimum inlet gas pressure listed on the model rating
plateis for the purpose of input adjustment.
WARNING
If the gascontrol valveis subjected to pressuresexceeding '/2
ipound-persquare inch(3.5kPa), the damage to the gas con-
|rol valvecould resultin a fire orexplosionfrom leak|nggas.
WARNING
If themain gasline shutoff serving all gasappliances is used,
alsoturn "OFF" the gas at each appliance. Leave all gas appli-
ancesshutoH until thewater heater installation is complete.
L
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 referred to as NFPA54 and the
gascompany concerning pipe size.
There must be:
-A readily accessible manual shut off valve in the gas sup-
ply 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 shutoff val_,e and control valve to permit servicing of
the unit.
Be sureto 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.
Standard Models are for installation up to 3,300 feet
above sea level.
High Altitude Models are for installation from 3,300 to
5,500 feet above sea level.
Ifa standard model is installed above 3,300 feet or ahigh
altitude model is installed above 5,500 feet, the input rat-
ing must be reduced at the rate of 4 percent for each
1,000 feet above sea level. Contact your local Sears
SeWice Center or gas ut I ty for further information.
..... WARNING
i,The appliance and its gas connection must be leak test- I
Led before placing the appliance in operation, I
, WAR NIN G
applianceand its individual shutoffvalve mustbe discon-
|ned_ from the gassupply piping systemduring any pressure
llesting of that system at test pressures in excessof' I/2 pound
_square . .
ll_ appliancemust be isolatedfrom the gas supplypiping sys-
inch(3.5kPa).
Jte_n_by closingits individual manual shutoff valve during any
Ipressuretesting of the gas supply piping system at test pres-
qual to or lessthan 1/2poundper squareinch (3.5kPa).
13
WARNING
I se pipe joint compound or teflon tape marked as being|
resistantto the action of petroleum [Propane (L.P.)] gases. !
SEDIMENTTRAP
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 teefitting
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 below.
Connectingthe gas piping to the gas control valve of the water
heatercanbeaccomplishedby either ofthe two methodsshown.
GAS PIPING WITH FLEXIBLE CONNECTOR
_[_GAS SUPPLY PIPING
MANUAL IlK I
SHUTOFF ] I[_
VALVE _J__
FLEXIBLE GAS CONNECTOR
LABELED AS COMPLYING
WITH ANSI STANDARDS
GROUND JOINT
UNION (Optional)
T6. DRIPLEG
(Sediment trap)
CAP
GAS
CONTROL
VALVE
GAS PIPING WITH ALL BLACK IRON PIPE
TO GAS CONTROL
GASSUPPLY PIPING
MANUAL]_- I
SHUTOFFll_Ll
VALVE _
"-_ BLACK PIPE
GROUND JOINT [t:::_ I
UNION.._ _GAS
CONTROL
VALVE
6" I JDRIP LEG
H (Sediment trap)
CAP
WARNING
Contaminants in the gas lines may causeimproper operation
of the gas control valve that may result in fire or explosion.
Beforeattaching the gas line be sure that all gaspipeis clean
onthe inside. "to trapany dirt or foreign material in the gas
supplyline, a drip leg (sometimes caged a sediment trap)
mustbe incorporated-in the piping. The drip leg must De
readily accessible. Install in accordance with the "Gas
Piping_section. Refer to the latest edition of the National
FuelGas Code, ANSI Z223.1, alsoreferred to as NFPA 54.