Installation Instructions (cont'd)
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
10.5in. water column (2.6kPa) for natural gas or 13 in. water column (3.2kPa) for propane (LR) gas. The minimum inlet gas pressure listed on the model rating plate is for the pur- pose of input adjustment.
WA.N,NG ,1
If the gas control valve is subjected to pressures exceeding ½ I pound per square inch (3.5kPa), the damage to the gas con- I trol valve could result in a fire or explosion from leaking gas. ]
•,WARNING]
If the main gas line shutoff serving all gas appliances is used, I also tum "off" the gas at each appliance. Leave all gas appli. I
ances shut off until the water heater installation iscomplete. J
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 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 shutoffvalve 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 offsoapy 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.
lfa 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.
he appliance and its gas connection must be leak tested
ITAWARNINGI fore placingthe appliance in operation.
_,WARNING
•The applianceand its individualshutoffvalvemustbe discon- nectedfrom the gassupplypipingsystemduringanypressure testingof the gassystem at test pressuresin excessof I/2 pound per squareinch(3.5kPa).
•The appliancemustbe isolatedfrom the gassupplypipingsys- tem by closingits individualmanualshutoffvalveduring any pressuretestingof the gassupplypipingsystemat test pres- soresequalor lessthan I_ poundper squareinch(3.5kPa).
AWARNINGI
Use pipe joint compound or teflon tape marked as being resistant to the actionof petroleum [Propane(L.R)] 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. Ifa 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 he accomplished by either of the two methods shown.
GAS PIPING WITH
FLEXIBLE CONNECTOR
MANUAL SHUT OFF
VALVE
AS SUPPLY PIPING
FLEXIBLE GAS CONNECTOR
LABELED AS COMPLYING
WITH ANSI STANDARDS
LOOP
GROUND JOINT
UNION
GAS
CONTROL
VALVE
(Sediment trap)
CAP
GAS PIPING WITH ALL BLACK IRON PIPE TO GAS CONTROL
MANUAL SHUT OFF [1_ CAS SUPPLY PIPING
VALVE
BLACK PIPE
GROUND
UNION
GAS
CONTROL
VALVE
(Sedimen(
CAP
_,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.
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