Desa PROPANE GAS LOG HEATER Owner's Operation And Installation Manual page 10

INSTALLING
Continued
10
You may use this heater as a vented product. If
so, you must always run heater with chimney flue
damper open. If running heater with damper open,
non-combustible material above fireplace open-
ing is not needed. Go to Installing Damper Clamp
Accessory for Vented Operation, page 13.
Minimum Non Combustible Material Clearances
If Not Using Mantel
If using a mantel, go to page 11. If not using a mantel, follow the information
Note:
on this page.
You must have non combustible material(s) above the fireplace opening. Non
combustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch
thick. With sheet metal, you must have non combustible material behind it. Non
combustible material must extend at least 8" up. If non combustible material is less
than 12", you must install the fireplace hood accessory. See chart below and Figure
5 for minimum clearances.
If you cannot meet these minimum clearances, you must operate
IMPORTANT:
heater with chimney flue damper open. Go to Installing Damper Clamp Accessory
for Vented Operation, page 13.
Non-Combustible
Material Distance (A)
12" or more
Between 8" and 12"
Less than 8"
Heat Resistant
Material
Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace
NOTICE
Requirements for
Safe Installation
Non combustible material OK.
Istall fireplace hood acessory (GA6050
or GA6052, see Accessories, page 31).
Non combustible material must be
extended to at least 8". See Between 8"
and 12", above. If you cannot extend
material, you must operate heater with
flue damper open.
(A)
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