Desa CGN10R installation manual Connecting, To GAS Supply, Checking GAS Connections

CONNECTING

IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping

TO GAS SUPPLY

Continued

and/or fittings.

3/8" NPT Pipe Nipple

Ground Joint Union Manual

Pressure Regulator

Heater

Cabinet

Shutoff Valve *

Tee Joint

CHECKING GAS CONNECTIONS

14

	Reducer	Test
From Gas Meter	Bushing to	Gauge
	1/8" NPT	Connection *
(4" W.C. to
10.5" W.C. Pressure)	1/8" NPT
	Plug Tap
3" Minimum	Tee
	Joint	Sediment
	Pipe
		Trap
	Nipple

Cap

Figure 12 - Gas Connection

*An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional A.G.A. design-certified manual shutoff valve from your dealer. See Accessory, page 26.

WARNING

Test all gas piping and connections for leaks after installing or servicing. Correct all leaks at once.

WARNING

Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once.

PRESSURE TESTING GAS SUPPLY PIPING SYSTEM

Test Pressures In Excess Of 1/2 PSIG

1.Disconnect heater and its individual manual shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig will damage heater regulator.

2.Cap off open end of gas pipe where manual shutoff valve was connected.

3.Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter.

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