OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB
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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
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 -
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 |
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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