INSTALLATION

Continued

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

4.Feed flexible gas line into fireplace base area. Make sure the entire flexible gas line is in fireplace mantel base area.

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

CHECKING GAS CONNECTIONS

WARNING:Testallgaspiping 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.

5.Correct all leaks at once.

6.Reconnect heater 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 24).

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 sup- ply to equipment shutoff valve for propane/LP (see Figures 25 and 26). Apply noncorrosive leak detection fluid to all joints. Bubbles form- ing show a leak.

4.Correct all leaks at once.

WARNING: Never use an open flame to check for a leak. Apply a noncorrosive leak detec- tion 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 heater.SeeguidelinesunderCon- necting to Gas Supply, page 15.

PRESSURE TESTING GAS SUPPLY PIPING SYSTEM

Equipment

Open

 

Shutoff

 

Valve

 

Closed

Figure 24 - Equipment Shutoff Valve

Equipment Shutoff Valve

Propane/LP

Supply Tank

Test Pressures In Excess Of 1/2 PSIG

Figure 25 - Checking Gas Joints Propane/LP

(3.5 kPa)

Gas (Shown with Optional Mantel)

1.

Disconnect appliance with its appliance main

 

 

gas valve (control valve) and equipment

Equipment

 

shutoff valve from gas supply piping system.

Shutoff Valve

 

Pressures in excess of 1/2 psig will damage

 

 

heater regulator.

Gas Meter

 

 

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

Figure 26 - Checking Gas Joints Natural

 

or using compressed air.

 

Gas (Shown with Optional Mantel)

 

 

113896-01B

www.desatech.com

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Image 17
Desa CF26NTA installation manual Checking GAS Connections, Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPa, KPa

CF26NTA specifications

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