Desa R, V, T Optional Positioning of Thermostat Sensing Bulb, Thermostat-Controlled Models Only

OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB (THERMOSTAT-CONTROLLED MODELS ONLY)

For Masonry and Factory-Built Metal Fireplace

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OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB

(Thermostat-Controlled Models Only)

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 on the gas valve assembly. This location allows the thermostat to keep the room temperature at an ideal comfort level for most fireplace applications. For position- ing the thermostat sensing bulb elsewhere, an adhesive-backed mounting clip is available (see Figure 41).

Tools needed: 5/16" hex driver or socket

Capillary

		Thermostat
		Sensing
	Screw	Bulb
		Retaining Clamp
Figure 41 - Adhesive-backed	Figure 42 - Removing
Mounting Clip	Thermostat Sensing Bulb

1.	Locate the gas valve assembly and thermostat sensing bulb
	(see Figure 40).
2.	With 5/16" hex driver or socket, loosen the thermostat screw.
	Carefully slide the thermostat sensing bulb out of the retaining
	clamp (see Figure 42).
	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.

Thermostat Sensing Bulb

Adhesive- backed Mounting Clip

Thermostat Sensing Bulb

Adhesive- backed Mounting Clip

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 43 for location.

If you have a factory-built metal fireplace, see Figure 44 for

location.

Figure 43 - Locating Thermostat	Figure 44 - Locating Thermostat
Sensing Bulb on Masonry	Sensing Bulb on Factory-built
Fireplace	Metal Fireplace

If your fireplace has glass doors, position sensing bulb directly

behind door gap on right bottom side (see Figure 45).

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

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

will be positioned vertically with the capillary at the bottom (see

Figure 46). Slide the thermostat sensing bulb into the clip.

IMPORTANT: Do not crimp capillary.

Thermostat Sensing Bulb

Adhesive- backed Mounting Clip

Glass Doors

Thermostat Sensing Bulb

Adhesive- backed Mounting

Clip

Capillary

Do Not

Crimp Capillary

Gas Valve Assembly

Thermostat

Sensing Bulb

Figure 40 - Location of Gas Valve Assembly and Thermostat Sensing Bulb

Figure 45- Installing Thermostat	Figure 46 - Positioning the
Sensing Bulb behind Glass	Thermostat Sensing Bulb in
Doors	the Vertical Position with the
	Capillary at the Bottom

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