Desa CSG3930PR, CSG3930NR installation manual Connecting to GAS Supply

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INSTALLATION

Installing Heater Base Assembly (Cont.) Connecting To Gas Supply

INSTALLATION

Continued

2.Locate two masonry screws in hardware package.

3.Place heater base in fireplace.

4.Place logs in their proper position on heater base (see Installing Logs, pages 15 and 16).

5.Center heater base and logs front-to-back and side-to-side in fireplace.

6.Carefully remove logs without moving heater base.

7.Mark screw locations through one hole on each side of the mounting bracket (see Figure 12). If installing in a brick-bot- tom fireplace, mark screw locations in mortar joint of bricks.

8.Remove heater base from fireplace. If installing optional con- trol accessories, do so at this time. Follow all directions pro- vided with accessory.

9.Drill holes at marked locations using 3/16" drill bit.

10.Attach base assembly to fireplace floor using two masonry screws (in hardware package).

Mounting

Flange Masonry

Screw

Figure 12 - Attaching Base Assembly to Fireplace Floor (30" Model Shown)

CONNECTING TO GAS SUPPLY

WARNING: This appliance requires a 1/2" NPT (National Pipe Thread) inlet connection to the pres- sure regulator.

WARNING: A qualified service person must con- nect heater to gas supply. Follow all local codes.

CAUTION: For propane/LP gas, never connect heater directly to the propane/LP supply. This heater requires an external regulator (not supplied). Install the external regulator between the heater and pro- pane/LP supply.

Installation Items Needed

Before installing heater, make sure you have the items listed below.

external regulator for propane/LP only (supplied by installer)

piping (check local codes)

sealant (resistant to propane/LP gas)

equipment shutoff valve *

test gauge connection *

sediment trap

tee joint

pipe wrench

*A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 34.

For propane/LP only, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 13, page 13. Pointing the vent down protects it from freezing rain or sleet.

WARNING: For natural gas, never connect heater to private (non-utility) gas wells. This gas is com- monly known as wellhead gas.

CAUTION: Use only new, black iron or steel pipe. Internally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of 1/2" inside diameter or greater to allow proper gas volume to heater. If pipe is too small, undue loss of volume will occur.

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Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GASTable of Contents Safety InformationSafety Information Optional Remote Control Accessories Product IdentificationLocal Codes UnpackingProduct Features AIR for Combustion and VentilationDetermining FRESH-AIR Flow for Heater Location Determining if You Have a Confined or Unconfined SpaceVentilation AIR Ventilation Air From Inside BuildingVentilation Air From Outdoors Installation Installation and Clearances for VENT-FREE OperationCheck GAS Type Minimum Noncombustible Material Clearances See Between 8Determining Minimum Mantel Clearance When Using a Hood Mantel ClearancesFloor Clearances Determining Minimum Mantel ClearanceInstalling Damper Clamp Accessory for Vented Operation Installing Heater Base AssemblyInstallation Items Needed Remote-Ready Models OnlyConnecting to GAS Supply Attaching Base Assembly to Fireplace Floor 30 Model ShownExternal Regulator With Vent Pointing Down Pressure Testing gas Supply Piping system Pressure Testing Heater Gas ConnectionsChecking GAS Connections Installing Logs Installing Log #4 Model CSG3924NR ShownInstalling Log #2 Right and Log #3 Left Model VRL30NR Shown Attaching Grate to Base Assembly Operating HeaterAdding Lava Rock Lighting InstructionsManual Lighting Procedure To Turn OFF GAS To ApplianceThermostat Control Operation Shutting Off HeaterREMOTE-READY Models For Your Safety Read Before Lighting Optional HAND-HELD Remote Operation Control Knobs and Ignitor Button Locations ShownManual Mode Auto Thermostatic ModeSafety Features ON/OFF Series Models Ghrcb and CghrcbInspecting Burners Pilot Flame PatternBurner Flame Patterns Cleaning Maintenance Cleaning Burner Injector Holders and Pilot AIR Inlet HolesLogs Troubleshooting Observed Problem Possible Cause RemedyRefer to Air for Combustion and Venti Gas leak. See Warning statement Optional Positioning of Thermostat Sensing Bulb Important Do not crimp capillarySpecifications Wiring DiagramREMOTE-READY Models only Illustrated Parts Breakdown Illustrated Parts Breakdown Parts List THERMOSTAT-CONTROLLED Models2325 1026 Natural Gas Models Only REMOTE-READY Models Accessories Owners Registration Form Postage Required Replacement Parts Service HintsTechnical Service Parts Under WarrantyNot a UPC