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107124-01E
For more information, visit www.desatech.com
For more information, visit www.desatech.com
27
27
Adhesive-
backed
Mounting
Clip
Figure 50 - Locating Thermo-
stat Sensing Bulb on Masonry
Fireplace
Thermostat
Sensing Bulb
Adhesive-
backed
Mounting
Clip
Thermostat
Sensing
Bulb
Figure 51 - Locating Thermo-
stat Sensing Bulb on Factory-
built Metal Fireplace
Glass
Doors
Figure 52 - Installing Ther-
mostat Sensing Bulb behind
Glass Doors
OPTIONAL POSITIONING OF
THERMOSTAT SENSING BULB
For Masonry and Factory-built
Metal Fireplace
Figure 47 - Location of Gas Valve Assembly and Thermostat
Sensing Bulb
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
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).
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 53). Slide the thermostat sensing bulb into the clip.
IMPORTANT:
Do not crimp capillary.
Figure 48 - Adhesive-backed Mounting Clip
Figure 49 - Removing Thermostat Sensing Bulb
Thermostat
Sensing Bulb
Gas Valve
Assembly
Mounting
Bracket
Thermostat
Screw
Retaining
Clamp
Thermostat
Sensing Bulb
Capillary
OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB
Adhesive-
backed
Mounting
Clip
Thermostat
Sensing Bulb
Figure 53 - Positioning the
Thermostat Sensing Bulb in
the Vertical Position with the
Capillary at the Bottom
Capillary
Thermostat
Sensing Bulb
Do Not Crimp
Capillary
Adhesive-backed
Mounting Clip