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104415-01J
For more information, visit www.desatech.com
For more information, visit www.desatech.com
27
27
Capillary
Screw
Retaining Clamp
Thermostat
Sensing
Bulb
OPTIONAL POSITIONING OF
THERMOSTAT SENSING BULB
(Thermostat-Controlled Models Only)
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 position-
ing the thermostat sensing bulb elsewhere, an adhesive-backed
mounting clip is available.
Tools needed: 5/16" hex driver or socket
1. Locate the gas valve assembly and thermostat sensing bulb
(see Figure 40).
2. With 5/16" hex driver or socket, loosen the thermostat screw.
Carefully slide the thermostat sensing bulb out of the retaining
clamp (see Figure 42).
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 43 for location.
If you have a factory-built metal fireplace, see Figure 44 for
location.
If your fireplace has glass doors, position sensing bulb directly
behind door gap on right bottom side (see Figure 45).
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 46). Slide the thermostat sensing bulb into the clip.
IMPORTANT:
Do not crimp capillary.
Figure 40 - Location of Gas Valve Assembly and Thermostat
Sensing Bulb
Thermostat
Sensing Bulb
Gas Valve Assembly
Figure 41 - Adhesive-backed
Mounting Clip
Figure 42 - Removing
Thermostat Sensing Bulb
Figure 43 - Locating Thermostat
Sensing Bulb on Masonry
Fireplace
Figure 44 - Locating Thermostat
Sensing Bulb on Factory-built
Metal Fireplace
Adhesive-
backed
Mounting
Clip
Thermostat Sensing Bulb
Figure 45 - Installing Thermostat
Sensing Bulb behind Glass
Doors
Figure 46 - Positioning the
Thermostat Sensing Bulb in
the Vertical Position with the
Capillary at the Bottom
Adhesive-
backed
Mounting
Clip
Glass Doors
Thermostat Sensing Bulb
Capillary
Thermostat Sensing Bulb
Do Not
Crimp
Capillary
Adhesive-
backed
Mounting
Clip
Adhesive-
backed
Mounting
Clip
Thermostat Sensing Bulb
OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB
(THERMOSTAT-CONTROLLED MODELS ONLY)
For Masonry and Factory-Built Metal Fireplace