Lennox Hearth Products 038M Installation And Operating Instructions Manual page 9

B
A
Fireplace Framing
G
7'
Min.
B
Rough Framing Face
(unfinished shown)
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
26-1/4"
F 47" 1194 mm
G 27-3/4" 705 mm
J 66-3/8" 1686 mm
49-3/8"
28-1/2"
4-1/4"
5-5/8"
20-1/8"
Figure 10
CORNER
INSTALLATION
F
Header
23-3/4"
Back Wall of Chase/Enclosure
Including Finising Materials if any
* Zero Clearance
From Back
Spacer to Wall
2" x 3"
Min.
Plywood
Rough Framing Face (Unfinished Shown)
Due to Lennox' ongoing commitment to quality, all specifications,
ratings and dimensions are subject to change without notice.
All framing dimensions calculated for 1/2" dry wall at the fireplace
A
face. If sheathing the chase or finishing with other thickness materials,
calculations will need to be made.
* The fireplace must not be in contact with any insulation or loose
filling material. Cover the insulation with Drywall panels around
the fireplace.
* Total depth is 25 inches including the
back spacer minus 1/2 inch for drywall
to be flush with the facing.
41-3/4"
10-1/4"
1-5/32"
15"
7"
31"
46-1/4"
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
29-1/2"
D
J
E
OUTSIDE CHASE
C
G
Notes
7/8"
11-1/8"
16-1/4"
26-1/8"
1"
43-1/4"
37"
28-1/2"
3"
5-5/8"
10-3/8"
Insulated Chase Construction
Roof Support
Attic
Radiation
Shield
7 Ft.
Min.
6' 8"
Min.
Insulate Joists
Same As Ceiling
Draft Stops
1/2" Plywood
Firestop
* Floor
Ceiling
CTDT
Wall
Termination
Note: Non-
Combustible
• Must have the same firestopping
Chase
Flashing
resistance as adjacent wall.
Must Be
• Must have the same insulation as
Used To
adjacent ceiling.
Cover
Chase
• Follow local rules regarding fram-
Opening
ing construction.
8'
Level
Insulation
(Thermal Barrier)
Figure 11
Storm
Collar
Flashing
* Floor
Ceiling
Wall
Firestop
Note: Floor
and wall
below the
attic must
be insulated
using the
same
insulation.
Drywall or
Any Rigid
Material
2" x 4"
Optional
Insulation
In Outside
Walls Of
Chase
Solid
Continuous
Surface
Outside
Base
9