Sears KENMORE POWER MISER 153.336431 - Manual (Page 12)

Installing the New Water Heater (cant'd)
Venting (cont’d)
-WARNING-
-WARNING
Chemical vapor corrosion of the flue and vent system may
occur if air for combustion contains certain chemical vapors.
and sodium chloride, waxes, bleach and process chemicals
are typical compounds which are potentially corrosive.
Gas Piping
-WARNING-
Make sure the gas supplied is the same type listed on the
model rating plate. The mlet gas pressure must not exceed 14
inches water column
I'A pound per square inch (3.5kPa)].
-WARNING
If the j ps control valve is subjected to pressures exceeding Vi
H no per square Inch (3.5kPa), the damage to the gas con­
valve could result in a fire or explosion from leaking gas.
-WARNING
If the main gas line shutoff serving all gas appliances is used,
also turn "OFF" the gas at each appliance. Leave all gas appli-
shut off until the water heater installation is complete. anees
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
gas company 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 valve and control valve to permit servicing of
the unit.
Be sure to check ail the gas piping for leaks before lighting
the water heater. Use a soapy water solution, hot 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.
If a standard model is installed above 3,300 feet or a high
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
Service Center or gas utility for further information.
-WARNING
The appliance and its gas pnnertion must be leak test­
ed before placing the appliance in operation.
-WARNING
The appliance and its individual shutoff valve must be discon­
.
.......................................... .
-
testing of that system at test pressures in excess or Vi pound
rhe appliant
lected from the gas supply piping system during any pressure
per square inch (3.5kPa).
The api
appliance must be isolated from the gas supply piping sys­
tem by closing its individual manual shutoff valve during any
pressure testing of the gas supply piping system at test pres­
sures equal to or less than 7: pound per square inch (3.5kPaT
WARNING -
Use pipe joint compound or teflon tape marked as being
resistant to the action of petroleum [Propane (L.P.)] gases.
Connecting the gas piping to the gas control valve of the
water heater can be accomplished by either of the two
methods shown.
GAS PIPING WITH FLEXIBLE CONNECTOR
GAS SUPPLY PIPING
|t|
Î
MANUAL SHUTOFF VALVE
GROUND JOINT
UNION (OPTIONAL)
FLEXIBLE GAS CONNECTOR
LABELED AS COMPLYING
WITH ANSI STANDARDS
GAS
CONTROL
VALVE
GAS PIPING WITH ALL BLACK IRON PIPE
TO GAS CONTROL
CAS SUPPLY PIPING
l
i
MANUAL SHUTOFF VALVE
GROUND JOINT UNION
' BLACK PIPE
CAS
CONTROL
VALVE
12
DRIP LEG
. (SEDIMENT TRAP)
CAP
-WARNING —
Contaminants in the gas lines may cause improper opera­
tion of the gas controFvalve that may result in fire or explo­
sion. Before attaching the gas line be sure that all gas pipe is
dean on the inside. To trap any dirt or foreign material in
the gas supply line, a drip leg (sometimes called a sediment
trap) must he 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 Z223.1, also referred to as NFPA 54.