Desa Tech SL30NT Checking GAS Connections, Pressure Testing Gas Supply Piping System

VENT-FREE NATURAL GAS STOVE HEATER

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 noncorrosive leak de- tection fluid 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 (3.5 kPa)

Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)

1.Close equipment shutoff valve (see Figure 19).

2.Pressurize supply piping system by either using compressed air or open- ing main gas valve located on or near gas meter.

3.Check all joints from gas meter to equipment shutoff valve (see Figure 19). Apply noncorrosive leak detection fluid to gas joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Open

Equipment

Shutoff

Valve

Closed

Figure 19 - Equipment Shutoff Valve

Pressure Testing Heater Gas Connections

1.Open equipment shutoff valve (see Figure 19).

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 equipment shutoff valve to control valve (see Fig- ure 20). Apply noncorrosive leak de- tection fluid to gas joints. Bubbles forming show a leak.

5.Correct all leaks at once.

6.Light heater (see Operating Heater, page 13). Check all other internal joints for leaks.

7.Turn off heater (see To Turn Off Gas to Appliance, page 13).

1.	Disconnect appliance with its appliance
	main gas valve (control valve) and equip-
	ment shutoff valve from gas supply pip-
	ing 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 using compressed air or open-
	ing main gas valve located on or near
	gas meter.
4.	Check all joints of gas supply piping
	system. Apply noncorrosive leak detec-
	tion fluid to gas joints. Bubbles form-
	ing show a leak.
5.	Correct all leaks at once.
6.	Reconnect heater and equipment
	shutoff valve to gas supply. Check re-
	connected fittings for leaks.

Equipment

Shutoff

Valve

Gas Meter

Control Valve Location

Figure 20 - Checking Gas Joints

12 104463