Installation Instructions
Gas Piping (cont'd)
CORRECT GAS PIPE SIZE FOR
WATER HEATERS OPERATING ON NATURAL GAS Basedon Inlet Gas Pressuresof 0.5 psigor Lessand
a Pressure Drop of 0.3 inchesWater Column. (Based on a 0.60 SpecificGravity Gas)
(cont'd)
GAS PIPING WITH
FLEXIBLE CONNECTOR
TOTAL INPUT* DISTANCE TO METER, IN FEET
BTU/HR | 20 | 30 | 60 | 90 | 125 | 150 | 200 |
75,000 | '/2 | 3/4 | 3/, | 3/, | I | I | I |
100,000 | 3/, | 3/, | 3/4 | I | I | I | I |
150,000 | 3/, | 3/4 | t | I | 17, | 17, | 17, |
*Of all gas appliances l line.
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- ceming pipe size.
There must be:
•A readily accessible manu_i 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 oint 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 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.
Ifa standard model is installed above 3,300 feet or a high altitude models 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 |
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The appliance and it_ | must be leak tested |
beforeplacingthe 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 pound per square inch (3,5kPa).
•The 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- surfs equal or lessthan I'/2pound per square inch (3.5kPa),
I
AWARNING
Use pipe joint compound or teflon tape marked as being resistantto the actionof petroleum [Propane
MANUAL _GAS SUPPLY PIPING
SHUTOFF
VALVE
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| FLEXIBLE |
| GAS | CONNECTOR | |
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| LABELED | AS | COMPLYING | ||
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| WITH | ANSI | STANDARDS | ||
UNION (Optional) |
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| GAS |
GROUNDJOIN | ____ |
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| CONTROL |
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| VALVE | ||
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| (Sediment | trap) |
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| 3"_IN._ | DRIP | LEG |
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| I CAP |
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GAS PIPING WITH ALL BLACK IRON | ||||||
| PIPE | TO | GAS | CONTROL | ||
"_ GAS SUPPLYPIPING
I1
MANUAL _:_
SHUTOFF _l[_ I
VALVE _'_
BLACK PIPE
GROUND
GAS
CONTROL
VALVE
JOINT U__
3" MIN.
_J CAP
AWARNING
Contaminantsin the gaslinesmay causeimproper operation of the gascontrol valvethat may result in fire or explosion. Beforeattachingthe gaslinebe surethat all gaspipe isclean on the inside.To trap anydirt or foreignmaterial 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 accessibleInstallin. accordancewith 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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