Optional Positioning of Thermostat Sensing Bulb

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 47).
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 49).
	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

Figure 48 - Adhesive-backed Mounting Clip

	Capillary	Thermostat
	Capillary	Screw
		Screw
	Retaining
	Clamp
		Thermostat
		Sensing Bulb

Figure 49 - Removing Thermostat Sensing Bulb

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 50 for location. If you have a factory-built

metal fireplace, see Figure 51 for location. If your fireplace

has glass doors, position sensing bulb directly behind door gap

on right bottom side (see Figure 52).

Thermostat Sensing Bulb

Adhesive- backed Mounting Clip

Thermostat Sensing Bulb

Adhesive- backed Mounting Clip

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 50 - Locating Thermo-	Figure 51 - Locating Thermo-
stat Sensing Bulb on Masonry	stat Sensing Bulb on Factory-
Fireplace	built 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 53). Slide the thermostat sensing bulb into the clip.

IMPORTANT: Do not crimp capillary.

Gas Valve

Assembly

Thermostat

Sensing

Bulb

Adhesive- backed Mounting

Clip

Glass Doors

Thermostat

Sensing Bulb

Adhesive-backed Mounting Clip

Do Not Crimp

Capillary

	Mounting	Thermostat
		Sensing Bulb
	Bracket

Figure 47 - Location of Gas Valve Assembly and Thermostat Sensing Bulb

	Figure 52 - Installing Ther-	Figure 53 - Positioning the
		Thermostat Sensing Bulb in
	mostat Sensing Bulb behind
		the Vertical Position with the
	Glass Doors
		Capillary at the Bottom