Owner's Manual

71D0530
1
GCUF Vent-Free Fireboxes
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1. Locate combustion air assembly at an exterior location
which is not likely to be accidentally blocked in any man-
ner. Locate assembly a min. of 1" above the snow line
to prevent blockage by snow accumulation.
. Never mount the combustion air inlet assembly in a
garage or storage area where combustible fumes such
as gasoline might be drawn into the replace.
3. Combustion air can be drawn from the crawl space un-
der a house when an adequate supply of air is provided
by open ventilation.
4.        
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5. Locate air supply inlet at least 3' away from any ap-
pliance vent terminal.
6. Avoid extremely long runs and numerous turns in the
duct leading from the replace to the combustion air
assembly. These conditions increase the resistance to
the free ow of air through the duct. Refer to Figures
12 through 15 for methods of installing the outside air
for combustion assemblies.
FP2459
OA basement install
Above
Snow
Level
Ground
Level
FP459
Figure 12 -
Basement Installation
8' Max.
FP2460
OA slab install
Inlet Grille
in Soft
(Overhang)
FP460
Figure 13 -
Concrete Slab Installation
(Optional Outside Air Runs)
FP2461
above basement
Duct
Extended
to Miss
Joist
FP461
Figure 14 -
Installation Above Basement or
Crawl Space
To Outside Wall
FP2462
OA corner install
Outside
Wall
Inside Wall
FP46
Figure 15 -
45° Corner Installation
on Slab Floor
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