Desa UNVENTED (VENT-FREE) PROPANE/LP GAS LOG HEATER Checking Gas Connections, Vanguard Flame-Max

VANGUARD FLAME-MAX™

UNVENTED PROPANE/LP GAS LOG 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 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 supply and heater. See guidelines under Con- necting to Gas Supply, page 10.

Test Pressures Equal To or Less Than 1/2 PSIG

1.Close manual shutoff valve (see Fig- ure 15).

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

3.Check all joints from propane supply tank to manual shutoff valve (see Fig- ure 15). Apply mixture of liquid soap and water to gas joints. Bubbles form- ing show a leak.

4.Correct all leaks at once.

Manual

Shutoff Open

Valve

Closed

Figure 15 - Manual Shutoff Valve

Pressure Testing Heater Gas Connections

1.Open manual shutoff valve (see Fig- ure 15).

2.Open propane 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 16). 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 14 and 15). Check all other in- ternal joints for leaks.

7.Turn off heater (see To Turn Off Gas to Appliance, page 15).

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 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.

Propane Supply Tank

Manual	Control Valve
Shutoff	Location
Valve

6. Re-connect heater and manual shutoff

valve to gas supply. Check re-con-

nected fittings for leaks.

Figure 16 - Checking Gas Joints

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