16
79D0007
Lo-Rider Vent Free Fireboxes
COMBUSTION and VENTILATION AIR
COMBUSTION AIR
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 fireplace.
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.
CAUTION: Do not take combustion air from attic
space or garage space.
5. Locate air supply inlet at least 3' away from any appli-
ance vent terminal.
6. Avoid extremely long runs and numerous turns in the
duct leading from the fireplace to the combustion air
assembly. These conditions increase the resistance to
the free flow of air through the duct. Refer to
Figures
22 through 25
for methods of installing the outside air
for combustion assemblies.
NOTE: Fireplace model in illustrations may not
be representative of your appliance.
FP2696
OA basement
Above
Snow
Level
Ground
Level
FP696
Figure 22 -
Basement Installation
8' max.
FP2697
OA concrete slab
Inlet Grille
in Soffit
(Overhang)
FP697
Figure 23 -
Concrete Slab Installation
(Optional Outside Air Runs)
FP2698
OA crawl space
Duct
Extended to
Miss Joint
FP698
Figure 24 -
Installation above Basement or Crawl Space
FP2699
OA corner slab floor
Outside
Wall
Figure 25 -
45° Corner Installa-
tion on Slab Floor
