Desa Tech SL30PT Checking GAS Connections, Pressure Testing Heater Gas Connections

VENT-FREE PROPANE/LP GAS STOVE HEATER

INSTALLATION

Continued

We recommend that you install a sediment trap in supply line as shown in Figure 19, page 11. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Lo- cate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly.

CAUTION: Avoid damage to regulator. Hold gas regulator with wrench when connecting it to gas piping and/or fittings.

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

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.

6.Reconnect heater and equipment shutoff valve to gas supply. Check re- connected fittings for leaks.

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

1.Close equipment shutoff valve (see Fig- ure 20).

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

3.Check all joints from gas meter to equip- ment shutoff valve (see Figure 21). Ap- ply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Open

Equipment

Shutoff

Valve

CO losed

POS

Figure 20- Equipment Shutoff Valve

Pressure Testing Heater Gas Connections

1.Open equipment shutoff valve (see Fig- ure 20).

2.Open propane/LP supply tank valve.

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

4.Check all joints from equipment shutoff valve to control valve (see Figure 21). 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, page 13). Check all other internal joints for leaks.

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

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, page 11.

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 sup-
	ply 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.

Propane/LP Supply Tank

Equipment

Shutoff Valve

Control Valve Location

Figure 21 - Checking Gas Joints

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