Installation Instructions (cont'd)
Gas Piping
_,WARNING
Make sure the gas supplied is the same type listed on the model rating plate. The inlet gaspressuremust not exceed 10.5in, water column(2.6kPa)for natural gasor 13 in. water column (3.2kPa) for propane (L.R) gas. The minimum inlet gas pressurelisted on the model rating plate is for the pur- poseof input adjustment.
&WARNING, ]
If the gascontrol valveis subjected to pressuresexceeding '/2I pound per squareinch(3.5kPa), the damageto the
trol valvecouldresult in a fire or explosionfrom leakinggas. J
_,WARNING
If the main gasline shutoffservingall gasappliancesis used, alsoturn "off" the gasat each appliance. Leaveall gasappli- ances shutoff untilthe water heater installationiscomplete.
A gas line of suft]cient size _nust 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.
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.
&WARNING
The appliance and its gas connection must be leak tested beforeplacingthe appliance in operation.
AWARNING
•The appliance and its individual shutoff valve must be discon- nected from the gasSupply piping system during any pressure testing of the gas system at test pressures in excess of I/2 pound per square inch (3.5kPa).
•The appliance must be isolatedfrom 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- suresequal or lessthan I/2 pound per square inch (3.5kPa).
_,WARNING | ] |
Use pipe joint comp_ape | marked as being |
resistant to the actionof petroleum [Propane(LP.)] gases, j
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. Ira 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
MANUALVALVESHUT OFF _AS | SUPPLY PIHNG |
| FLEXIBLE GAS CONNECTOR |
| LABELED AS COMPLYING |
| WITH ANSI STANDARDS |
| LOOP |
UNION (OprJonal) | GAS |
| |
| CONTROL |
| VALVE |
GROUND }OIN_ |
|
3" MIN. |
|
GAS PIPING WITH ALL BLACK IRON PIPE TO GAS CONTROL
MANUAL SHUT OFF _CA$ SUPPLY PIPING
VALVE
BLACK PIPE
GROUND JOINT
GAS
CONTROL
VALVE
UNION 3" MIN.
&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 Cede, ANSI Z223.1, also referred to as NFPA 54.
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