Kenmore 153.335963 - Manual (Page 22)

Installation Instructions (cont’d)
Gas Piping
A WARNING
Make sure the gas supplied is the same type listed on the
model rating plate. The inlet gas pressure must not exceed
10.5 in, water column (2.6kPa) for natural gas or 13 in. water
column (3.2kPa) for propane (LP.) gas. The minimum inlet
gas pressure listed on the model rating plate is for the pur­
pose of input adjustment.
A WARNING
If the gas control valve is subjected to pressures exceeding 'A
pound per square inch (3.5kPa), the damage to the gas con­
trol valve could result in a fire or explosion from leaking gas.
AWARNING
If the main gas line shutoff serving alt gas appliances is used,
also turn “off" the gas at each appliance. Leave all gas appli­
ances shut off until the water heater installation is complete.
A gas line of sufficient size must be run ro the water heater.
Consult the latest edition of National Fuel Gas Code ANSI
Z223.1, also referred to as NFPA 54 and the gas company con­
cerning pipe size.
There must be:
• 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
shutoff 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.
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 rating 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.
AWARNING
The appliance and its gas connection must be leak tested
before placing the appliance in operation.
AWARNING
> The appliance and its individual shutoff valve must be discon­
nected from the gas supply piping system during any pressure
testing of the gas system at test pressures in excess of 1/2
pound per square inch (3.5kPa).
■ The appliance must be isolated from the gas supply piping sys­
tem by closing its individual manual shutoff vitive during any
pressure testing of the gas supply piping system at test pres­
sures equal or less than 1/2 pound per square inch (3.5kPa).
AWARNING
Use pipe joint compound or teflon tape marked as being
resistant to the action of petroleum [Propane (LR)] gases.
SEDIMENT TRAP
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 nip­
ple in the bottom outlet or other device recognized as an effec­
tive sediment trap. If a tee fitting is used, it shall be installed in
conformance with one of the methods of installation shown
below.
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
MANUAL SHUT OFF
VALVE
FLEXIBLE GAS CONNECTOR
LABELED AS COMPLYING
WITH ANSI
standards
GAS
CONTROL
VALVE
GAS PIPING WITH ALL BLACK IRON
PIPE TO GAS CONTROL
1 GAS SUPPLY PIPING
MANUAL SHUT OPE f
VALVE
GROUND JOINT
UNION
BLACK PIPE
r MIN,
22
AWARNING
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 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 be incorporated in the piping. The drip leg must be
readily accessiMe. 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.