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 33).

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 35).

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 36 for location. If you have a factory- built metal fireplace, see Figure 37 for location. If your fire- place has glass doors, position sensing bulb directly behind door gap on right bottom side (see Figure 38).

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 39). Slide the thermostat sensing bulb into the clip.

IMPORTANT: Do not crimp capillary.

	Capillary	Thermostat Screw
	Capillary
Retaining
Clamp
		Thermostat
		Sensing Bulb
Figure 34 - Adhesive-	Figure 35 - Removing Thermostat
backed Mounting Clip	Sensing Bulb

	Thermostat	Thermostat
		Sensing Bulb
	Sensing Bulb

Adhesive-backed

Mounting Clip

Figure 36 -

Locating

Figure 37 - Locating

Thermostat Sensing Bulb on

Masonry Fireplace

Factory-built Metal Fireplace

Thermostat Sensing Bulb

Thermostat

Sensing Bulb

Gas Valve

Assembly

Mounting

Bracket

Thermostat Sensing Bulb

Adhesive-

Capillary backed

Mounting

Clip

		Do Not Crimp
Adhesive-backed	Glass Doors	Capillary
Mounting Clip

Figure 33 - Location of Gas Valve Assembly and Thermostat Sensing Bulb

Figure 38 - Installing Figure 39 - Positioning the Thermostat Sensing Bulb Thermostat Sensing Bulb in

behind Glass Doorsthe Vertical Position with the Capillary at the Bottom

For..com

107068-01F

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