Desa LHN) (V)L36(EN Continued, Pressure Testing Gas Supply Piping System, Equipment Shutoff Valve

INSTALLATION

Continued

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 supply 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.

3.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.

4.Check all joints of gas supply piping system. Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.

5.Correct all leaks at once.

6.Reconnect heater and equipment shutoff valve to gas supply. Check reconnected fit- tings for leaks.

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

1.Close equipment shutoff valve (see Figure 23).

2.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.

3.Check all joints from gas meter to equipment shutoff valve for natural gas or propane/LP supply to equipment shutoff valve for propane/ LP (see Figure 24 and 25). Apply noncorrosive leak detection fluid to all joints. Bubbles form- ing show a leak.

4.Correct all leaks at once.

Equipment	Open
Shutoff Valve

Closed

Figure 23 - Equipment Shutoff Valve

Equipment Shutoff Valve

Propane/LP

Supply Tank

Control Valve Location

Figure 24 - Checking Gas Joints (Propane/LP Gas Only)

Equipment

Shutoff Valve

Gas

Meter

Control Valve Location

Figure 25 - Checking Gas Joints

(Natural Gas Only)

PRESSURE TESTING HEATER GAS CONNECTIONS

1.Open equipment shutoff valve (see Figure 23).

2.Open main gas valve located on or near gas meter for natural gas or 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 (Manually-Controlled Mod- els) or to gas control (Remote-Ready Models) (see Figures 24 and 25). Apply noncorrosive leak detection fluid to all joints. Bubbles form- ing show a leak.

5.Correct all leaks at once.

6.Light heater (see Operating Fireplace, page 21). Check all other internal joints for leaks.

7.Turn off heater (see To Turn Off Gas to Appli- ance, page 23 for Manually-Controlled Mod- els or page 25 for Remote-Ready Models).

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