Desa CFS18NR, VS24NR VS30NR Checking GAS Connections, Pressure Testing Heater Gas Connections

Page 12

DESA INTERNATIONAL

UNVENTED NATURAL GAS LOG HEATER

INSTALLATION

Continued

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

Test Pressures Equal To or Less Than 1/2 PSIG

1.Close manual shutoff valve (see Fig- ure 14).

2.Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter.

3.Check all joints from gas meter to manual shutoff valve (see Figure 15). Apply mix- ture of liquid soap and water to gas joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Pressure Testing Heater Gas Connections

1.

Open manual shutoff valve (see Fig-

 

ure 14).

2.

Open main gas valve located on or near

 

gas meter.

3.

Make sure control knob of heater is in

 

the OFF position.

4.

Check all joints from manual shutoff

 

valve to gas control (see Figure 15). Ap-

 

ply mixture of liquid soap and water to

 

gas joints. Bubbles forming show a leak.

5.

Correct all leaks at once.

flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once.

Pressure Testing gas Supply Piping system

Manual

Shutoff

Valve

Open

Closed

6.

Light heater (see Operating Heater,

 

pages 14 through 16). Check all other

 

internal joints for leaks.

7.

Turn off heater (see To Turn Off Gas to

 

Appliance, page 15).

Test Pressures In Excess Of 1/2 PSIG

1.Disconnect heater and its individual manual 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 manual shutoff valve was connected.

3.Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter.

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 manual shutoff valve to gas supply. Check reconnected fittings for leaks.

Figure 14 - Manual Shutoff Valve

Manual Shutoff Valve

Gas Meter

Gas Control Location

Figure 15 - Checking Gas Joints

12

103449

Image 12
Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GASSafety Information Desa International Unvented Natural GAS LOG HeaterProduct Features Remote Control AccessoriesProduct Identification Local CodesAIR for Combustion and Ventilation Providing Adequate VentilationUnusually Tight Construction Confined and Unconfined SpaceAIR for Combustion Ventilation Determining FRESH-AIR Flow for Heater LocationDetermining if You Have a Confined or Unconfined Space Ventilation AIR Ventilation Air From InsideBuilding Ventilation Air From OutdoorsInstallation Installation ClearancesCheck GAS Type Minimum Fireplace Clearance to Combustible MaterialsIf Using Mantel If Not Using MantelMinimum Noncombustible Material Clearances Operation,Determining Minimum Mantel Clearance When Using a Hood Mantel ClearancesFloor Clearances Determining Minimum Mantel ClearancesInstalling Damper Clamp Accessory for Vented Operation Installing Heater Base AssemblyInstallation Items Needed Chimney Minimum Permanent Height ft Flue Opening sq. insConnecting to GAS Supply Attaching Flexible Gas Hose to Heater Gas RegulatorPressure Testing Heater Gas Connections Pressure Testing gas Supply Piping systemChecking GAS Connections Test Pressures Equal To or Less Than 1/2 PsigInstalling Logs Installing Front Logs #1L and #1RFor Your Safety Read Before Lighting Operating HeaterLighting Instructions Manual Lighting Procedure To Turn OFF GAS to ApplianceOptional Remote Operation Shows Temperature Setting Inspecting Burners Pilot Flame PatternFront Burner Flame Pattern Cleaning and Maintenance Cleaning Burner Injector Holder and Pilot AIR Inlet HoleLogs Troubleshooting Observed Problem Possible Cause RemedySee Wiring Diagram, Gas leak. See Warning statement AboveSpecifications Wiring Diagram Replacement PartsService Hints Technical ServiceAccessories Illustrated Parts Breakdown Variable Control CFS18NR VS18NR VS24NR VS30NRParts List CFS18NR VS18NR VS24NR VS30NRWarranty Information International