Desa CCL3018PTA/NTA EN - Manual (Page 28)

www.desatech.com 113097-01E 8
OPTIONAL POSITIONING
OF THERMOSTAT
SENSING BULB
FOR MASONRY AND FACTORY-
BUILT METAL FIREPLACE
If your log set cycles to pilot, but the room tem-
perature 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 elsewhere, 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 38).
2. With 1/4" hex driver or socket, loosen the ther-
mostat screw. Carefully slide the thermostat
sensing bulb out of the retaining clamp (see
Figure 40).
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 sens-
ing bulb until step 4. If you have a masonry fire-
place, see Figure 41 for location. If you have
a factory-built metal fireplace, see Figure 42
for location. If your fireplace has glass doors,
position sensing bulb directly behind door gap
on right bottom side (see Figure 43).
Thermostat
Sensing
Bulb
Gas Valve
Assembly
Mounting
Bracket
Figure 38 - Location of Gas Valve
Assembly and Thermostat Sensing Bulb
Figure 39 - Adhesive-backed Mounting Clip
Figure 40 - Removing Thermostat
Sensing Bulb
Thermostat
Screw
Retaining
Clamp
Thermostat
Sensing
Bulb
Capillary
Adhesive-backed
Mounting Clip
Thermostat
Sensing Bulb
Figure 41- Locating Thermostat Sensing
Bulb on Masonry Fireplace
Figure 42 - Locating Thermostat Sensing
Bulb on Factory-built Metal Fireplace
Adhesive-
backed
Mounting Clip
Thermostat
Sensing Bulb
Adhesive-backed
Mounting Clip
Thermostat
Sensing Bulb
Glass Doors
Figure 43 - Installing Thermostat Sensing
Bulb Behind Glass Doors