State Industries GP6 50 User Manual

Page 17

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17

A gas line of sufficient size must be run to the water heater.

Consult the current edition of National Fuel Gas Code (ANSI

Z223.1/NFPA 54) and your gas supplier concerning pipe size.
There must be:

• A readily accessible manual shuttoff valve in the gas supply line

serving the water heater, and

• A drip leg (sediment trap) ahead of 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 shuttoff

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.

Use pipe joint compound or teflon tape marked as being resistant

to the action of petroleum [Propane (L.P.)] gases.

The appliance and its gas connection must be leak tested before

placing the appliance in operation.

The appliance and its individual Shuttoff valve should be disconnected

from the gas supply piping system during any pressure testing of that

system at test pressures in excess of 1/2 pound per square inch (3.5 kPa).

It should be isolated from the gas supply piping system by closing its

individual manual Shuttoff valve during any pressure testing of the gas

supply piping system at test pressures equal to or less than 1/2 pound

per square inch (3.5 kPa).
Connecting gas piping to the gas control valve of water heater can be

accomplished by either of two methods shown in Figures 12 and 13.

fIGure 12. Gas pIpInG wIth

fleXIBle connector.

fIGure 13. Gas pIpInG wIth all

BlacK Iron pIpe to Gas control.

sedIMent traps

A sediment trap should be installed as close to the inlet of the

water heater as practical at the time of water heater installation.

The sediment trap should be either a tee fitting with a capped

nipple in the bottom outlet or other device recognized as an

effective sediment trap. If a tee fitting is used, it should be

installed in conformance with one of the methods of installation

shown in Figures 12 and 13.

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 current edition of the National Fuel Gas Code

(ANSI Z223.1/NFPA 54).

FIGURE 14.

fIllInG the water heater

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