Lennox Hearth B-Vent Elite LBV-3824MP-H - Manual (Page 12)

12 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Wall Switch Kit 85L87 FWSK
Outside Combustion Air Kits
(with duct)
81L87 FOAK-4
(without duct) 81L88 FOAK-4LD
INSTALLATION ACCESSORIES
The following accessory items are available for
use in the installation of this appliance.
Outside Air Kits Models FOAK-4 and FOAK-4LD
Outside Air kits are available with duct
(FOAK-4) and without duct (FOAK-4LD)
for use if outside combustion air is re-
quired or desired. If model FOAK-4LD is
used it must be used in conjunction with
locally purchased, non-combustible Class
1 or Class 0 flexible duct.
Wall Switch Kit FWSK
Figure 26
COLD CLIMATE INSULATION
If you live in a cold climate, seal all cracks
around your appliance with noncombustible
material and wherever cold air could enter the
room. It is especially important to insulate
outside chase cavity between studs and under
floor on which appliance rests, if floor is above
ground level.
60"
(1524 mm)
Min. to
Ceiling
12" Min.
(305 mm)
0" Clearance
to Combustible
Side Wall
Max. Projection 12" (305 mm)
Combustible
Mantel
Figure 25
12"
Min.
Fireplace
Opening
Non-combustible
Wall Covering
Spacer Combustible
Mantel
and Trim
12"
Max.
Finished
Wall
Typical Installation
Header
FINISHING REQUIREMENTS
Wall Details and Combustible Mantels
Complete finished interior wall. To install the
appliance facing flush with the finished wall,
position framework to accommodate the thick-
ness of the finished wall
(Figure 25 ). Both
Figures 25 and 26 show a combustible mantel
shelf projecting a maximum of 12" (305 mm)
from the wall, and which must be installed a
minimum distance of 12" (305mm) from the
top of the firebox opening. No other mantel
length/height combinations are allowable for this
fireplace.
A hearth extension is not required with this
appliance. Any hearth extension used is for
appearance only and does not have to conform
to standard hearth extension installation re-
quirements.
Note: Combustible wall finish materials and/or
surround materials must not be allowed to
encroach the area defined by the appliance
front face (black sheet metal). Never allow
combustible materials to be positioned in front
of or overlapping the appliance front face.