Fireplace

Installation

Continued

To Gas Supply

(Natural)Equipment

Shutoff Valve

To External Regulator (Propane/LP)

Flexible Gas Line

Do NOT Kink

Control Valve

Figure 32 - Connecting Flexible Gas Line

to Millivolt Valve

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once.

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

5.Reconnect fireplace and equipment shutoff valve to gas supply. Check reconnected fittings for leaks.

Test Pressures Equal To or Less Than

1/2 PSIG (3.5 kPa)

1. Close equipment shutoff valve (see Figure 33).

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

3. Check all joints from propane/LP supply tank or gas meter to equipment shutoff valve (see Figure 34, for propane/LP or Figure 35, for natural gas). Apply noncorrosive leak detec- tion fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.

Equipment

Open

Shutoff Valve

 

Closed

Figure 33 - Equipment Shutoff Valve

WARNING:Neveruseanopen flame to check for a leak. Apply noncorrosive leak detection fluid toalljoints.Bubblesformingshow a leak. Correct all leaks at once.

Pressure Testing Gas Supply

Piping System

Test Pressures In Excess Of 1/2 PSIG

(3.5 kPa)

1. Disconnect fireplace and its individual equip-

Propane/LP Supply Tank

Equipment Shutoff Valve

Gas Valve

ment shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig (3.5 kPa) will damage fireplace gas 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 fireplace or opening main gas valve located on or near gas meter for natural gas fireplace or using compressed air.

Figure 34 - Checking Gas Joints for

Propane/LP Gas Fireplace

Equipment

Shutoff Valve

Gas

Meter

Gas Valve

Figure 35 - Checking Gas Joints for

Natural Gas Fireplace

116192-01E

www.desatech.com

23

Page 23
Image 23
Desa TC36N, TC36P installation manual Checking GAS Connections, Test Pressures Equal To or Less Than Psig 3.5 kPa