Desa CGN30C, CGN18R Checking GAS, Connections, Pressure Testing GAS Supply Piping System

CONNECTING	IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping
	and/or fittings.
TO GAS
SUPPLY
Continued		Pressure
		Regulator
	Heater			1/2" NPT
				Pipe Nipple
	Cabinet			Ground Joint
			Tee Joint	Union
	Test		Reducer	Manual
	Gauge		Bushing to	Shutoff
	Connection *		1/8" NPT	Valve *
			1/8" NPT	From
			Plug Tap	Gas Meter
			Tee Joint	(7" W.C. to 10.5" W.C. Pressure)
	Sediment		Pipe
	Trap			3" Minimum
			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 Accessories, page 27.

CHECKING	WARNING
GAS
	Test all gas piping and connections for leaks after installing or
CONNECTIONS	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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