Desa 102783-01B Owner's Operation And Installation Manual page 11

INSTALLING
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102783
Manual control heaters may be used 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 opening is not needed. Go to Installing Damper
Clamp Accessory for Vented Operation, page 14.
Minimum Non Combustible Material Clearances
If Not Using Mantel
Note: If using a mantel, go to page 12. If not using a mantel, follow the informa-
tion 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 (for all models). If non combus-
tible material is less than 12", you must install the fireplace hood accessory (24"
model only). See chart below and Figure 4 page 10 for minimum clearances.
IMPORTANT: If you cannot meet these minimum clearances, you must operate
heater with chimney flue damper open. Go to Installing Damper Clamp Accessory
for Vented Operation, page 14.
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.
24" Model: Install fireplace hood accessory (GA6050
or GA6052, see Accessories, page 29).
18" Model: Non combustible material OK.
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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