Gas Piping; Venting - Kenmore 153.333931 Owner's Manual

Installation Instructions (cont'd)
Venting (cont'd)
_WARNING
Chemical vapor corrosion of the flue and vent system
may occur if air for combustion contains certain chemical
vapors. Spray can propellants, cleaning solvents, refrigera-
tor and air conditioner refrigerants, swimming pool
chemicals, calcium 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 inlet gas pressure must not exceed
10o5in. water column (2o6kPa) for natural gas or 13 in. water
column (3.2kPa) for propane (L.P.) gas. The minimum inlet
gas pressure listed on the model rating plate is for the pur-
pose of input adjustment.
_,WARNING
If the gas control valve is subjected to pressures exceeding ½
pound per square inch (3.5kPa), the damage to the gas con-
trol valve could result in a fire or explosion from leaking gas.
•,WARNING I
If the main gas line shutoff serving all gas appliances is used,
also turn "OFF" the gas at each appliance. Leave all gas appli-
ances shut off until the water heater nstallation is complete, I
A, WARNIN G
The appliance and its.,_.n must be leak tested
before placing the apphance in operation.
•_ WARNING
• 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 */
pound per squareinch (3.5kPa).
• The appliance must be isolated from the gas supplypiping sys.
tern by closing its individual manual shutoff valve during any
pressure testing of the gas supply piping system at test pres-
suresequal or lessthan ¼ pound per square inch(3.5kPa).
U_se -_ WARNING . -]
pipe joint compound or teflon tape marked as being I
I resistant to the actionofpetroleum [Propane(L.R)] gases. |
SEDIMENT TRAP
A gas line of su_cient size must be run to 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 offvalve 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
shutoffvalve and control valve to permit servicing of the unit.
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.
GAS PIPING WITH
FLEXIBLE CONNECTOR
__GAS SUPPLY PIPING
MANUAL
SHUTOFF
VALVE
FL Xl G E IBLE AS CONNECTOR
GROUND JOINT
UNION(Optional)
T
3" rain
LABELED AS COMPLYING
WITH ANSI STANDING
LOOP
GAS CONTROL
VALVE
Sediment t ral21
CAP
Be sure to check all the gas piping for leaks before li_;hting the
water heater. Use a soapy water solution, not a match or open
flame. Rinse offsoapy solution and wipe dry.
_,WARNING
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 latest edition of the National Fuel Gas
Code, ANSI Z223.1, also referred to as NFPA 54.
15