Desa CGD3930NT, CCL3924NT Checking GAS Connections, Pressure Testing Gas Supply Piping system

OWNER’S MANUAL

INSTALLATION

Continued

CHECKING GAS

CONNECTIONS

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.

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.

Test Pressures Equal To or Less Than 1/2 PSIG

1.Close manual shutoff valve (see Fig- ure 16).

2.Pressurize supply piping system by ei- ther using compressed air or opening main gas valve located on or near gas meter.

3.Check all joints from gas meter to manual shutoff valve (see Figure 17). Apply mixture of liquid soap and wa- ter to gas joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Manual
	Open
Shutoff Valve

Closed

Figure 16 - Manual Shutoff Valve

Pressure Testing Heater Gas Connections

1.Open manual shutoff valve (see Figure 16).

2.Open main gas valve located on or near gas meter.

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 17). Apply mixture of liquid soap and wa- ter to gas joints. Bubbles forming show a leak.

5.Correct all leaks at once.

6.Light heater (see Operating Heater, pages 17 and 18 [manually-controlled models] or pages 18 and 19 [thermo- statically-controlled models]). Check all other internal joints for leaks.

7.Turn off heater (see To Turn Off Gas to Appliance, page 18 [manually-con- trolled models] or page 19 [thermostati- cally-controlled models]).

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
	main gas valve located on or near gas
	meter.
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.
6.	Reconnect heater and manual shutoff
	valve to gas supply. Check reconnected
	fittings for leaks.

Manual	Thermostat Gas Valve or
Shutoff
	Control Valve Location
Valve

Gas Meter

Figure 17 - Checking Gas Joints

Continued

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