Desa CGR50NA, CGR35NA, CGR65NA Checking GAS Connections, Pressure Testing Gas Supply Piping System

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INSTALLING HEATER

Continued

CHECKING GAS CONNECTIONS

WARNING

Test all gas piping and connections for leaks after install- ing or servicing. Correct all leaks at once.

WARNING

Never use an open 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

Test Pressures In Excess of 1/2 PSIG

1.Disconnect heater and its individual manual shutoff valve from gas supply pipe. 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 forming show a leak.

5.Correct all leaks at once.

Test Pressures Equal To or Less Than 1/2 PSIG

1.Close manual shutoff valve (see Figure 8).

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 propane supply tank to manual shutoff valve. Apply mixture 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 Figure 8).

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 control valve on heater. Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.

5.Correct all leaks at once.

6.Light heater (see Operating Heater, pages 21 through 23). Check the rest of the internal joints for leaks.

7.Turn off heater (see To Turn Off Gas to Appliance,page 23).

PO On Position

Off Position

Figure 8 - Manual Shutoff Valve

Continued

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Contents For Your Safety OWNER’S Operation and Installation ManualWhat to do if YOU Smell GAS Contents Carbon monoxide poisoning may lead to death Safety InformationSafety Information Identification ProductInstallation Items Local Codes Unpacking Product FeaturesCheck GAS Type Heater Clearances Locating HeaterVenting Heater Do not vent heater in any of the following ways see Figure Venting HeaterVenting Heater Proper Size Vent Connecting Heater to Utility Gas Line Connecting to GAS SupplyGas Connection Checking GAS Connections Pressure Testing Gas Supply Piping SystemLocation of Radiants Installing RadiantsInserting Glass Panels Installing Glass PanelInserting Glass into Lower Retaining Channel AIR for Combustion and Ventilation Draft Hood Spillage Test Determining FRESH-AIR Flow for Heater LocationVentilation Air from Outdoors Example 2 Locating Heater in Confined Closed Area Operating Heater For Your Safety Read Before LightingLighting Instructions Viewing Pilot Blower Operation Manual Lighting ProcedureTo Turn OFF GAS to Appliance Shutting Off HeaterPilot Flame Pattern Inspecting Pilot and Burner FlameBurner Flame Pattern Correct Burner Flame Pattern Cleaning and Maintenance Observed Possible Problem Cause Remedy Trouble ShootingSee Changing Burner See Removing Control TROUBLE- ShootingLighting Instructions Top Ing statement atRemoving Control Valve and Burner Tube Service ProceduresRemoving Burner Changing Burner Orifice Blower Wiring DiagramService Hints Technical Service35,000 BTU/Hr 50,000 BTU/Hr ModelParts Under Warranty Ordering Replacement Parts CentralsParts Not Under Warranty Valve GA5010 AccessoriesBlower Assembly Illustrated Parts ListCabinet Assembly Burner Assembly Thermocouple Interrupter 100792 100792 Limited Warranty Comfort Glow Vented Natural GAS Heaters Warranty Information