Checking GAS Connections, Psig 3.5 kPa, Equipment

INSTALLATION
	Continued
IMPORTANT: Hold the pressure regulator with
wrench when connecting it to gas piping and/or
ﬁttings. Do not over tighten pipe connection to
regulator. The regulator body could be damaged.
Pressure
Regulator	Heater

	Cabinet

WARNING: Never use an open ﬂame to check for a leak. Apply a noncorrosive leak detec- tion ﬂuid to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION: For propane/LP gas, make sure external regula-

	3/8" NPT
Connection*	Pipe Nipple
	Bushing to
	Tee Joint
	Reducer
Gauge	1/8" NPT
	1/8" NPT

Test	Plug Tap
	Trap	Tee Joint

	Sediment	Pipe
		Nipple

		Cap

Ground Joint

Union

Equipment

Shutoff

Valve*

3" Min.

Natural Gas From Gas Meter (4" W.C. to 10.5" W.C. Pressure) Propane/LP From External Regulator (11" W.C. to 14" W.C. Pressure)

tor has been installed between propane/LP supply and heater. See guidelines under Connect- ing to Gas Supply, page 12.

PRESSURE TESTING GAS SUPPLY PIPING SYSTEM

Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)

1.	Disconnect appliance with its appliance main
	gas valve (control valve) and equipment
	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 equipment
	shutoff valve was connected.
3.	Pressurize supply piping system by either
	opening propane/LP supply tank valve for
	propane/LP gas or opening main gas valve
	located on or near gas meter for natural gas
	or using compressed air.
4.	Check all joints of gas supply piping system.
	Apply a noncorrosive leak detection ﬂuid to

Figure 15 - Gas Connection

*A CSA design-certiﬁed equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certiﬁed equipment shutoff valve from your dealer. See Accessories, page 30.