Optional Positioning Of Thermostat Sensing Bulb - Desa 103426-01 Owner's Operation And Installation Manual

SPLIT OAK AND AMERICAN OAK DESIGN
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 position-
ing the thermostat sensing bulb elsewhere,
an adhesive-backed mounting clip has
been provided.
Tools needed: 5/16" hex driver or socket
1. Locate the gas valve assembly and ther-
mostat sensing bulb (see Figure 34).
Thermostat
Sensing Bulb
Figure 34 - Location of Gas Valve
Assembly and Thermostat Sensing Bulb
2. The adhesive-backed mounting clip
(see Figure 35) is attached to the ther-
mostat sensing bulb. Remove the ad-
hesive-backed mounting clip.
Figure 35 - Adhesive-backed Mounting
Clip
103426
18", 24" AND 30" MODELS
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 36).
Note: Do not remove the screw. Make
sure you tighten the screw after remov-
ing the thermostat sensing bulb.
IMPORTANT: Do not force or bend
the thermostat sensing bulb or capillary.
Figure 36 - Removing Thermostat Sensing
Bulb
4. The thermostat sensing bulb may be
located to the lower right front side of
fireplace. Determine location of sens-
ing bulb, but do not mount sensing bulb
until step 5. If you have a masonry fire-
place, see Figure 37 for location.
Thermostat
Sensing
Bulb
Gas Valve
Assembly
Adhesive-
backed
Mounting Clip
Figure 37 - Locating Thermostat Sensing
Bulb on Masonry Fireplace
If you have a factory-built metal fireplace,
see Figure 38 for location.
Thermostat
Sensing
Bulb
Adhesive-
backed
Mounting
Clip
Figure 38 - Locating Thermostat Sensing
Bulb on Factory-built Metal Fireplace
If your fireplace has glass doors, position
sensing bulb directly behind door gap on
right bottom side (see Figure 39).
Thermostat
Sensing
Bulb
Capillary
Thermostat
Figure 39 - Installing Thermostat Sensing
Screw
Sensing
Bulb behind Glass Doors
Bulb
Retaining 5.
Clamp
Q Q
Q Q
Figure 40 - Positioning the Thermostat
Sensing Bulb in the Vertical Position with
the Capillary at the Bottom
21
Adhesive-
backed
Mounting
Clip
The mounting clip must be a minimum
of 3" from bottom of fireplace to pre-
vent crimping of capillary. Once you
have decided on a location, clean the
area thoroughly. Remove the paper
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 verti-
cally with the capillary at the bottom
(see Figure 40). Slide the thermostat
sensing bulb into the clip.
IMPORTANT: Do not crimp capillary.
Capillary
Q Q Q Q
Q Q Q Q Q
Glass
Doors
Thermostat
Sensing Bulb
Adhesive-
backed
Mounting
Clip
Do Not Crimp
Capillary