Lennox Hearth ELITE SERIES LBC-3824 - Manual (Page 7)

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE. 7
Note: The framed depth, 25-1/2" (648 mm)
from a framed wall, must always be measured
from a finished surface. If a wall covering such
as drywall is to be attached to the rear wall,
then the framed depth must be measured from
the drywall surface. It is important that this
dimension be exact.
If the appliance is to be elevated above floor
level, a solid continuous platform must be
constructed.
The header may rest on the top metal spacers,
but must not be notched to fit around them.
Consult all local codes.
Figure 11
Figure 12
Framing Dimensions for Ceiling
Flue Type A B
FTF10 Vertical 19" 19"
(483 mm) (483 mm)
FTF10 19" 29"
Offset 30
°
(483 mm) (737 mm)
Figure 13
Framing Dimensions for Roof
Pitch C D*
0/12 19" 19"
(483 mm) (483 mm)
6/12 19" 22"
(483 mm) (559 mm)
12/12 19" 27"
(483 mm) (686 mm)
* Perpendicular to roof ridge
Figure 15
Figure 16
Figure 14
Note: All framing dimensions calculated for 1/2"
dry wall at the fireplace face. If sheathing the
chase or finishing with other thickness materials,
calculations will need to be made.
FRAMING SPECIFICATIONS
FOAK-4 Combustion
Air Kit
G
A
J
Outside Chase
Back Wall of Chase/Enclosure
Including Finishing Materials
if any
Rough Framing Face
(Unfinished Shown)
A
E
F
D
C
K
Back Wall of Chase/Enclosure
Including Finishing Materials
if any
Rough
Framing Face
(Unfinished Shown)
Corner Installation
FOAK-4 Combustion
Air Kit
A
B
Ceiling Framing
C
D
Roof Framing
Header
Fireplace Framing
B
A
Framing Dimensions
Fireplace Opening Width
38 43
A 48-1/8" 52-7/8"
(1222 mm) (1343 mm)
B 50" 50"
(1270 mm) (1270 mm)
C 26-1/4" 31"
(667 mm) (787 mm)
D 13-1/8" 15-1/2"
(334 mm) (394 mm)
E 77-1/4" 82"
(1962 mm) (2083 mm)
F 38-5/8" 41"
(981 mm) (1041 mm)
G 25-1/2" 25-1/2"
(648 mm) (648 mm)
J 11" 11"
(279 mm) (279 mm)
K 54-5/8" 58"
(1388 mm) (1473 mm)
A
G
Inside Chase
Back Wall of Chase/Enclosure
Including Finising Materials if any
Rough
Framing Face
(Unfinished
Shown)
FOAK
Combustion
Air Kit