Lennox Hearth MONTEST Indoor Fireplace User Manual


 
Figure 11
Insulated Chase Construction
7 Ft.
Min.
Attic
Radiation
Shield
Roof Support
Storm
Collar
Flashing
Drywall or
Any Rigid
Material
2” x 4”
1/2” Plywood
6’ 8”
Min.
Firestop
* Floor
Ceiling
Wall
* Floor
Ceiling
Wall
Fireplace
Optional
Insulation
In Outside
Walls Of
Chase
Solid
Continuous
Surface
Outside
Base
Insulation
(Thermal Barrier)
8'
Level
Note: Floor
and wall
below the
attic must
be insulated
using the
same
insulation.
Must have the same fi restopping
resistance as adjacent wall.
Must have the same insulation as
adjacent ceiling.
Follow local rules regarding fram-
ing construction.
FRAMING DIMENSIONS
Fireplace Opening Width
A 46-3/8” 1178 mm
B 49-1/2” 1257 mm
C 42-3/4” 1086 mm
D 20-7/8” 530 mm
E 93-7/8” 2384 mm
F 47” 1194 mm
G 27-3/4” 705 mm
J 66-3/8” 1686 mm
Notes
Due to Lennox' ongoing commitment to quality, all specifi cations,
ratings and dimensions are subject to change without notice.
All framing dimensions calculated for 1/2" dry wall at the fi replace
face. If sheathing the chase or fi nishing with other thickness materials,
calculations will need to be made.
* Zero inch (0" ) air space to insulation and building materials on
back and sides.
Header
B
A
* Total depth is 25 inches including the
back spacer minus 1/2 inch for drywall
to be fl ush with the facing.
7’
Min.
B
G
A
2” x 3”
Min.
Rough Framing Face
(unfi nished shown)
29-1/2”
23-3/4”
F
D
J
E
7/8”
11-1/8”
16-1/4”
26-1/8”
1”
1-5/32”
26-1/4”
10-1/4”
41-3/4”
49-3/8”
46-1/4”
43-1/4”
37”
31”
15”
7”
4-1/4”
28-1/2”
5-5/8”
20-1/8”
28-1/2”
5-5/8”
10-3/8”
3”
OUTSIDE CHASE
G
C
Back Wall of Chase/Enclosure
Including Finising Materials if any
Rough Framing Face (Unfinished Shown)
Zero
Clearance
CORNER
INSTALLATION
Plywood
Figure 10
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
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