Desa Tech CGG3630P, CGG2618P, CGG3324PT Optional Positioning Of Thermostat Sensing Bulb

UNVENTED (VENT-FREE) GAS LOG HEATER

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 al- lows the thermostat to keep the room tem- perature at an ideal comfort level for most fireplace applications. For positioning the thermostat sensing bulb elsewhere, an adhe- sive-backed mounting clip is available.

Tools needed:

•5/16" hex driver or socket

1.	Locate the gas valve assembly and ther-
	mostat sensing bulb (see Figure 31).
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 33).
	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. A
	crimped capillary will not allow ther-
	mostat to operate properly. It cannot be
	repaired, the valve must be replaced.

4.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 vertically with the capillary at the bot- tom (see Figure 37). Slide the thermo- stat sensing bulb into the clip.

IMPORTANT: Do not crimp capillary.

Gas Valve

Assembly

Thermostat

Sensing Bulb

Figure 31 - Location of Gas Valve Assembly and Thermostat Sensing Bulb

Figure 32 - Adhesive-backed Mounting Clip

Capillary

Thermostat

Sensing Bulb

Adhesive-backed

Mounting Clip

Figure 34 - Locating Thermostat Sensing Bulb on Masonry Fireplace

Thermostat

Sensing

Bulb

Adhesive- backed Mounting Clip

Figure 35 - Locating Thermostat Sensing Bulb on Factory-built Metal Fireplace

Thermostat

Sensing

Bulb

Adhesive-
backed
Mounting
Clip	Glass Doors

Figure 36 - Installing Thermostat Sensing Bulb behind Glass Doors

3. 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 34 for location.

If you have a factory-built metal fire-

Thermostat

Screw Sensing

Capillary

Thermostat

Sensing

Bulb

Adhesive- backed Mounting Clip

place, see Figure 35 for location.

If your fireplace has glass doors, posi-

tion sensing bulb directly behind door

gap on right bottom side (see Figure 36).

Retaining Bulb

Clamp

Figure 33 - Removing Thermostat Sensing Bulb

Do Not Crimp

Capillary

Figure 37 - Positioning the Thermostat Sensing Bulb in the Vertical Position with the Capillary at the Bottom

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