Desa CGP20, RP30D Checking GAS Connections, Pressure Testing GAS Supply Piping System, Psig

OWNER’S MANUAL

CONNECTING TO GAS SUPPLY

Continued

IMPORTANT: Hold pressure regulator with wrench when connecting it to gas pip- ing and/or fittings.

*An A.G.A. design certified manual shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Pur- chase the optional A.G.A. design certified manual shutoff valve from your dealer. See Accessories, page 17.

CHECKING GAS CONNECTIONS

Pressure	Note: Burner bracket
Regulator	not shown for clarity
3/8" NPT
Pipe
Nipple

					Heater
				Ground Joint	Cabinet
		Tee Joint		Union
				Manual
Test
		Reducer		Shutoff
Gauge
		Bushing to 1/8"		Valve *
Connection *
		NPT		Typical Inlet
		1/8" NPT Plug		Pipe From
				External Regulator
		Tap
			Tee Joint	(11" W.C. to 14"
				W.C. Pressure)
	Sediment
			Pipe Nipple	3" Minimum
	Trap		Cap
Figure 13 - Gas Connection

WARNING: Test all gas pip- ing and connections for leaks

after installing or servicing. Cor- rect 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.

CAUTION: Make sure exter- nal regulator has been installed between propane/LP supply and heater. See guidelines under Con- necting to Gas Supply.

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 ei- ther using compressed air or

opening propane/LP supply tank valve.

4.Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles form- ing show a leak.

5.Correct all leaks at once.

Test Pressures Equal To or Less Than 1/2 PSIG

1.Close manual shutoff valve (see Fig- ure 14).

Open

Manual

Shutoff

Valve

Closed

Figure 14 - Manual Shutoff Valve

2.Pressurize supply piping system by ei- ther using compressed air or opening propane/LP supply tank valve.

3.Check all joints from propane/LP sup- ply tank to manual shutoff valve (see Figure 15, page 10). Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.

4.Correct all leaks at once.

PRESSURE TESTING

HEATER GAS

CONNECTIONS

1.Open manual shutoff valve (see Fig- ure 14).

2.Open propane/LP supply tank valve.

3.Make sure control knob of heater is in the OFF position.

4.Check all joints from manual shutoff valve to control valve (see Figure 15, page 10). Apply mixture of liquid soap and water to gas joints. Bubbles form- ing show a leak.

5.Correct all leaks at once.

6.Light heater (see Operating Heater, pages 10 and 11). Check the rest of the internal joints for leaks.

7.Turn off heater (see To Turn Off Gas to Appliance, page 11).

8. Replace front panel. Continued

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