Fireplace framing specifications – Lennox Hearth B-MNC0353VDE User Manual
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Note-
Venting requirements for rear vent applications in corner installations -
- the horizontal vent length “a” to “b,” must not exceed 28 inches (711 mm)
Inches
(millimeters)
*These dimensions occur when one
45 degree elbow is connected
directly to the appliance collar.
*In EDV3530 corner installations, the unit
has been moved 1
³⁄₈ in. (35 mm) into the
room in order to achieve a minimum of 5
in. (127 mm) in the F dimension.
*C
Back wall of chase/enclosure
(including any finishing materials)
a
7 (178)
b
*D
*E
*F
A
*B
Figure 10
Figure 9
FIREPLACE FRAMING SPECIFICATIONS
Framing
Corner Framing with Square Termination (SV4.5HT)
A
B
E
7
(178)
5
¹⁄₈
12
¹⁄₈
(308)
10
¹⁄₂
(
267
)
D
VENT FRAMING -
TOP VENT WITH ONE
90
°
ELBOW
VENT FRAMING -
REAR VENT WITH
NO ELBOWS
Framing should be constructed
of 2x4 or larger lumber.
Inches (mm)
(130)
5
¹⁄₈
(130)
7
(308)
12
¹⁄₈
(178)
C is the required framing depth
dimension when the finish material
(drywall) thickness is 1/2 in. (13mm).
¹⁄₂ A
C