Desa INTERNATIONAL UNVENTED (VENT-FREE) GAS LOG HEATER 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 through 17).

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

Flanges Masonry

Screw

Figure 12 - Attaching Base Assembly to Fireplace Floor (Base Assembly Will Vary According to Model)

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 38.

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" diam- eter 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 International 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 Check GAS TypeMinimum 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 External Regulator With Vent Pointing Down Pressure Testing gas Supply Piping system Pressure Testing Heater Gas ConnectionsChecking GAS Connections Installing Logs Installing Log #2 Model CGX3930NT ShownInstalling Log #3 Model VGX30NT Shown Installing Log #3 Model LGX3924NT Shown Models LGX3924NT and LGX3924PTAttaching Grate to Base Assembly Operating HeaterAdding Lava Rock Lighting InstructionsTo Turn OFF GAS to Appliance Shutting Off HeaterShutting Off Burners Only pilot stays lit Manual Lighting Procedure REMOTE-READY Models For Your Safety Read Before LightingThermostat Control Operation Flame Optional Remote Operation Thermostat Control OperationGhrc Series Operation Ghrcta Series OperationInspecting Burners Pilot Flame PatternFront Burner Flame Pattern Cleaning Maintenance Cleaning Burner Injector Holder and Pilot AIR Inlet HoleLogs 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 DiagramService Hints Technical ServiceIllustrated Parts Breakdown Illustrated Parts BreakdownParts List Parts ListTHERMOSTAT-CONTROLLED VGX24NT, VGX24PT VGX30NT, VGX30PT29 THERMOSTAT-CONTROLLED Parts Available not ShownCGX3924NR, CGX3924PR REMOTE-READY LGX3924NT, LGX3924PT KEY Part Number LGX3924NT LGX3924PT Description QTY Replacement Parts AccessoriesOwners Registration Form International For . .com Not a UPC

INTERNATIONAL UNVENTED (VENT-FREE) GAS LOG HEATER specifications

The Desa International Unvented (Vent-Free) Gas Log Heater stands as a remarkable solution for those seeking an efficient and aesthetically pleasing heating option for their homes. Recognized for its innovative design and advanced technology, this heater offers numerous benefits that cater to both functionality and style.

One of the main features of the Desa gas log heater is its vent-free design. This characteristic eliminates the need for ductwork or exhaust systems, allowing for easy installation in various locations, including living rooms, bedrooms, or recreational areas. With no external venting required, homeowners can enjoy increased flexibility in placement while saving on installation costs and labor. Moreover, the heater can fit seamlessly into existing fireplaces, creating a cozy ambiance without the need for traditional firewood.

Another standout feature of the Desa vent-free gas log heater is its exceptional energy efficiency. Utilizing infrared technology, the heater converts a high percentage of gas to heat, warming spaces quickly and reducing energy consumption. The unit is designed to operate with natural gas or propane, offering versatility depending on the homeowner's fuel preferences.

Safety is a top priority in the design of the Desa gas log heater. Equipped with an automatic shut-off system and an oxygen depletion sensor, the heater ensures secure operation by shutting down in case oxygen levels drop too low. This added safety feature provides peace of mind for families, allowing for safe use even during extended periods of operation.

Aesthetically, the Desa International gas log heater does not compromise on style. With an array of realistic log designs and finishes, homeowners can choose a heater that complements their interior decor perfectly. The unit’s flame effects mimic traditional wood-burning fires, enhancing the warm ambiance of any room.

In conclusion, the Desa International Unvented (Vent-Free) Gas Log Heater offers a unique combination of efficiency, safety, and aesthetics. Its vent-free design allows for flexible installation, while infrared heating technology ensures quick warmth and energy savings. Coupled with enhanced safety features and an attractive appearance, this gas log heater provides a practical and stylish heating solution for any home.
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