Lennox Hearth Ladera-BN - Manual (Page 10)

Figure 9
Insulated Chase Construction
Floor
Ceiling
Wall
















 














 


 






 




 M
Min.
Attic Radiation
Shield
Roof Support
Storm Collar
Flashing
Drywall or Any Rigid
Material
2 x 4
FIREPLACE
1/2” Plywood
 v
 M
Min.
Firestop
Figure 11
Mantel
Rock Board
or Other
12”
MM
Max.
Noncombustible
Facing
  MM
Drywall
2” X 3” Min.
MM X MM
Spacer
-ANTEL AND &ACING 3IDE 6IEW
Rock Board
or Other
Noncombustible
Facing
Drywall
Insulate Joists
Same As Ceiling
Draft Stops
Firestop
CTDT
Termination
Note: Non-
Combustible
Chase
Flashing
Must Be
Used To
Cover
Chase
Opening
8'
Level

 M
Level
Outside
Base
Insulation
4HERMAL "ARRIER
Solid
Continuous
Surface
NOTE: It is recommend-
ed that the chase walls
and floor be insulated in
the same manner, using
the same insulation, as
the rest of the building,
below the attic.
SEE NOTE
Facing
1. Combustible material must be installed
flush with the fireplace. It may not project
in front of and on the fireplace (i.e. the
steel facade of the fireplace) (Figure 10).
2. Non-combustible materials such as brick,
stone or ceramic tile may project in front
of and onto the fireplace facing up to the
tiling flange (Figure 13).
1
5
3
4
1. Fireplace
2. Tiling flange
 7OOD FRAME v X v MIN
4. Drywall
5. Tiles or brick
Fireplace Frame Section
4OP 6IEW
Figure 10
2
Nailing Flanges
Four nailing flanges are provided to secure the
fireplace to the floor (see figure below). Bend
the nailing flanges down so that each flange is
flush with the floor, then using nails or screws,
secure the fireplace to the floor (2 places each
side). The heads of the screws or nails must
be large enough to completely cover the holes
in the nailing flanges.
Nailing Flange
 PLACES EACH SIDE
Unbend to floor
and nail/screw
Mantel and Facing
The mantel must be installed at least 39’’ (990
mm) above the base of the fireplace (Figures
7b and 11).
Fireplace Side
./4% $)!'2!-3  ),,5342!4)/.3 !2% ./4 4/ 3#!,%
10