Desa Tech CGN20TL, CGN30TL Connecting, To GAS, Supply, Checking GAS, Connections

CONNECTING	IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping and/
	or fittings.
TO GAS
			Pressure
SUPPLY
			Regulator
Continued
		3/8" NPT
		Pipe Nipple
					Heater
				Ground Joint Union	Cabinet
			Tee Joint	Manual
	Test		Reducer	Shutoff
				Valve *
	Gauge		Bushing to
	Connection *		1/8" NPT	Typical Inlet Pipe from
			1/8" NPT	Gas Meter
				(4" W.C. to
			Plug Tap
				10.5" W.C. Pressure)
	Sediment		Tee Joint
			Pipe
	Trap			3" Minimum
			Nipple
			Cap
				Figure 13 - 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 Accessories, page 30.

CHECKING	WARNING ICONG 001 WARNING
GAS
	Test all gas piping and connections for leaks after installation or
CONNECTIONS	servicing. Correct all leaks at once.
	WARNING ICONG 001 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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