30
102650
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 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 positioning the thermostat sensing bulb elsewhere,
an adhesive-backed mounting clip has been provided.
Tools needed: 5/16" hex driver or socket
Thermostat
Sensing Bulb
Gas Valve
Assembly
Figure 27 - Location of Gas Valve Assembly and Thermostat Sensing Bulb
1. Locate the gas valve assembly and thermostat sensing blub (see Figure 27).
Figure 29 - Removing Thermostat Sensing Bulb
4. 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 30 for location.
Screw
Retaining Clamp
Thermostat Sensing Bulb
Capillary
2. The adhesive-backed mounting clip (see Figure 28) is attached to the thermostat
sensing bulb. Remove the adhesive-backed mounting clip.
Figure 28 - Adhesive-backed Mounting Clip
3. With 5/16" hex driver or socket, loosen the thermostat screw. Carefully slide the
thermostat sensing bulb out of the retaining clamp (see Figure 29).
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. A
crimped capillary will not allow thermostat to operate properly. It cannot be
repaired, the valve must be replaced.
