Desa CGD3924NT, CRL3124N, CRL2718N, CCL3018NT Optional Positioning of Thermostat Sensing Bulb

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OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB

25

OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB

For Masonry and Factory-built Metal Fireplace

If your log set cycles to pilot, but the room temperature drops to a lower than ideal comfort level before the log set comes back on, you may want to reposition the thermostat sensing bulb.

The thermostat sensing bulb is located near the gas valve assembly on the mounting bracket. This location allows the thermostat to keep the room temperature at an ideal comfort level for most fireplace applications. For positioning the thermostat sensing bulb else- where, an adhesive-backed mounting clip is available.

Tools needed: 1/4" hex driver or socket

1. Remove logs. Locate the gas valve assembly and thermostat

sensing bulb (see Figure 46).

2. With 1/4" hex driver or socket, loosen the thermostat screw.

Carefully slide the thermostat sensing bulb out of the retaining

clamp (see Figure 48).

Note: Do not remove the screw. Make sure you tighten the

screw after removing the thermostat sensing bulb.

IMPORTANT: Do not force or bend the thermostat sensing

bulb or capillary.

3. The thermostat sensing bulb may be located to the lower right

front side of fireplace. Determine location of sensing bulb, but

do not mount sensing bulb until step 5. If you have a masonry

fireplace, see Figure 49 for location. If you have a factory-

built metal fireplace, see Figure 50 for location. If your fire-

place has glass doors, position sensing bulb directly behind

door gap on right bottom side (see Figure 51).

4. The mounting clip must be a minimum of 3" from bottom of

fireplace to prevent crimping of capillary. Once you have de-

cided on a location, clean the area thoroughly. Remove the pa-

per backing from the adhesive on back of mounting clip. Press

Figure 47 - Adhesive-backed Mounting Clip

Capillary

 

Thermostat

 

Screw

Retaining

Thermostat

Clamp

Sensing Bulb

 

Figure 48 - Removing Thermostat Sensing Bulb

 

Thermostat

Thermostat

Sensing

Bulb

Sensing

 

Bulb

Adhesive-

 

 

Backed

Adhesive-

Mounting

Clip

Backed

 

Mounting

 

Clip

 

Figure 49 - Locating Figure 50 - Locating Thermostat

Thermostat Sensing Bulb on

Sensing Bulb on Factory-built

Masonry Fireplace

Metal Fireplace

the clip into the new location so that the thermostat sensing bulb

will be positioned vertically with the capillary at the bottom

(see Figure 52). Slide the thermostat sensing bulb into the clip.

IMPORTANT: Do not crimp capillary.

Thermostat

Sensing

Bulb

Adhesive- backed

Thermostat Sensing Bulb

Adhesive- backed

Gas Valve

Assembly

Mounting Bracket

Thermostat Sensing Bulb

Mounting

Clip

Glass Doors

Figure 51 - Installing Thermostat Sensing Bulb behind Glass Doors

Capillary Mounting Clip

Do Not

Crimp

Capillary

Figure 52 - Positioning the Thermostat Sensing Bulb in the Vertical Position with the Capillary at the Bottom

Figure 46 - Location of Gas Valve Assembly and Thermostat

Sensing Bulb

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Contents Unvented VENT-FREE Natural GAS LOG Heaters OWNER’S Operation Installation ManualBiltmore Split OAK, Seasonal OAK, Smoky Mountain OAK Logs What to do if YOU Smell GASSafety Information Table of ContentsProduct Identification Unpacking Product FeaturesLocal Codes AIR for Combustion and VentilationConfined and Unconfined Space Determining FRESH-AIR Flow for Heater LocationDetermining if You Have a Confined or Unconfined Space Ventilation Air From Inside Building Ventilation AIRVentilation Air From Outdoors Installation InstallationCheck GAS Type Minimum Firebox Size Log Front Rear Height Depth WidthMinimum Noncombustible Material Clearances If Not Using MantelMantel Clearances Determining Minimum Mantel Clearance When Using a HoodFloor Clearances Determining Minimum Mantel ClearanceInstalling Heater Base Assembly Installing Damper Clamp Accessory for Vented OperationInstallation Items Needed Area of Various Standard Round FluesAttaching Flexible Gas Hose to Heater Gas Regulator Connecting to GAS SupplyChecking GAS Connections Pressure Testing Gas Supply Piping systemPressure Testing Heater Gas Connections Installing LogsDual Burner Smoky Mountain Oak Models Dual Burner Biltmore Split Oak Models Dual Burner Premium Aged Split Oak ModelsInstalling Rear Log Single Burner Seasonal Oak Models Installing Crossover LogOperating Heater For Your Safety Read Before LightingLighting Instructions Variable Control Operation Manual Lighting ProcedureTo Turn OFF GAS to Appliance Shutting Off HeaterIgnitor Button Inspecting Burners Cleaning and MaintenanceLogs SpecificationsModel Models ModelObserved Problem Possible Cause Remedy TroubleshootingMaintenance, Gas leak. See Warning statement at top TopFor Masonry and Factory-built Metal Fireplace Optional Positioning of Thermostat Sensing BulbBreakdown Illustrated PartsDescription QTY Parts ListCGD3018NT CGD3924NT CGD3930NT Illustrated Parts BreakdownCGD3018NT CGD3924NT CGD3930NT Thermostatically-Controlled Biltmore Split Oak Model CCL3018NTCCL3018NT CCL3924NT, CCL3930NTA CCL3924NT CCL3930NTA Variable Manually-Controlled Seasonal Oak Models CRL2718N CRL3124N Variable Manually-Controlled Mountain Oak ModelsService Hints Replacement PartsTechnical Service AccessoriesOwners Registration Form Postage Required Parts Central Warranty Information
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