INSTALLATION

Continued

4.Check all gas connections for leaks. See Checking Gas Connections.

5.Replace branch support back into fireplace. Feed flexible gas line into fireplace base area while replacing branch support. Make sure the entire flexible gas line is in fireplace base area. Reattach branch support to fireplace with screws removed in step 1, page 17.

To Control

Equipment

 

Valve

 

Shutoff Valve

 

PROPANE/LP

 

 

 

 

To External

 

 

Regulator

Flexible Gas Line

from Fireplace Gas

Regulator Provided

NATURAL

With Fireplace

To Gas Supply

 

Figure 23 - Attaching Flexible Gas Line

to Equipment Shutoff Valve

CHECKING GAS CONNECTIONS

WARNING: Test all gas pip- ing and connections, internal and external to unit, 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.

CAUTION: Make sure exter- nal regulator has been installed between propane/LP supply and fireplace. See guidelines under Connecting to Gas Supply, pages 16 and 17.

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 equip- ment 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 lo- cated 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 fireplace 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 24).

2.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve lo- cated 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 Figures 25 or 26, page 19). Apply non- corrosive leak detection fluid to all joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Equipment

 

Open

 

ON

 

POSITION

Shutoff Valve

 

 

 

 

Closed

Figure 24 - Equipment Shutoff Valve

18

www.desatech.com

113110-01A

Page 18
Image 18
Desa VMH26PRB, EFS26NRA Checking GAS Connections, Pressure Testing gas Supply Piping System, Correct all leaks at once