Optional Gas Line Installation
Continued
WARNING: Do not operate an unvented gas log set in this firebox with the chimney removed.
WARNING: If the firebox has been used for wood burning, the firebox and chimney must be cleaned of soot, creosote and ashes by a qualified chimney cleaner. Creosote will ignite if heavily heated.
WARNING: When using a decorative vented gas log, the damper must be removed or permanently locked in the fully open position and the glass doors must be in the fully open position.
Note: An appropriate DESA Heating, LLC hood (see Replacement and Accessory Parts, page 14) must be installed when using an unvented gas log set.
Operation and Maintenance Guidelines
Glass Doors
To install glass doors, refer to installation instructions that are included with kit. When firebox is in operation, doors must be fully open or fully closed position only or a fire hazard may be created (see Figure 30 or 31).
Cabinet
Glass
Doors
Figure 30 - Cabinet Glass Doors
A firebox equipped with glass doors operates much differently than a firebox with an open front. A firebox with glass doors has a limited amount of air for combustion. Excessive heat within the firebox can result if too large a fire is built or if combustion air gate is not completely open.
The following tips should be followed to assure that both the firebox and glass door retain their beauty and function properly:
•Both the flue damper and glass doors must be fully opened before starting fire. This will provide sufficient combustion air and maintain safe temperatures in firebox.
•The glass must be allowed to warm slowly and evenly. The tempered glass will with- stand a gradual temperature rise to 550° F, which is more than a normal fire will gen- erate. Such materials as pitch/wax laden logs, very dry mill end lumber and large amounts of paper or cardboard boxes.
Always keep the fire well back from the doors and never allow flames to contact the glass.
Doors Fully Closed
Firebox Front
Firebox Front
Doors
Fully Opened 
Figure 31 -
WARNING: Fireplaces equipped with glass doors should be operated only with doors fully opened or doors fully closed. Doors, if left partly open, may draw gas and flame out of the fireplace opening creating risks of both fire and smoke.
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