FP2462
OA corner install
Outside
Wall
Inside Wall
Figure 8.4 45° Corner Installation on Slab Floor
WARNING!
DO NOT remove the cover on side of firebox if
the outside air will not be connected.
Step by Step Installation
1. Attach the collar to the side of the fireplace by aligning the
four holes in the collar with the four holes on the fireplace
side. Attach with the screws provided. See Figure 8.6.
2. Mark and cut out a 4 in. (102 mm) hole in the building
side for air entry. This hole should allow for some framing
(two sides) so the hooded air inlet may be nailed into
position, flush with the building’s outside.
3. Install hooded air inlet in the sidewall of the structure.
4. Assemble the flexible duct ID4 or UD4 (not supplied)
between the collar and the hooded air inlet. Secure it
into position with the supplied wire ties.
Outlet placed
higher than 3 ft
below the
termination cap
Attic space
Garage or
combustible
liquids storage
Outlet blocked by
snow, leaves, etc.
Clear area
outside
house or in
ventilated
crawl space
YES
NO
NO
NO
NO
Factory-built
fireplace
• Use UL181 Class 1 or Class 0 rigid or flexible ducting.
• Install with short run or mainly straight duct, except small
dip for cold air trap which will help prevent flow of cold air.
• Secure flex duct with screws or wire ties.
Figure 8.5
Figure 8.6
17
Monessen • LCUF32/36/42 Installation and Operating Manual • 4607-900 • Rev D • 3/21
