Fireplace specifications, Figure 14 – Lennox Hearth Electronic LMDV-3530-CNM User Manual
Page 9
9
FIREPLACE SPECIFICATIONS
Vertical Venting Through the Ceiling:
Frame ceiling opening - Use a plumb line
from the ceiling above the appliance to
locate center of the vertical run. Cut and/or
frame an opening, 10-1/2" x 10-1/2" (267
mm x 267 mm) inside dimensions, about
this center mark (see Figure 25).
Vent Size
Co-axial DV
Vent Size
4-1/2" Inner
/ 7-1/2" Outer
Notes
* The Steady State Efficiency numbers based on
maximum vent configuration.
Due to Lennox' ongoing commitment to quality, all
specifications, ratings and dimensions are subject
to change without notice.
Input (BTU) - MV & Electronic
Natural & Propane Gas
Models
Input Rate (BTU / HR)
LMDVT-3328CPM
LMDVR-3328CPM
17,500
LMDV-3530CPM
20,000
LMDV-4035CPM
27,000
Efficiencies %
Natural Gas
Propane
Models
P4
Steady
State
AFUE
P4
Steady
State
AFUE
LMDVT-3328
45
64
62
49
66
64
LMDVR-3328
53
63
61
55
66
64
LMDV-3530
53
64
62
55
62
60
LMDV-4035
59
69
67
60
69
67
Figure 14
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LMDVT-3328
LMDVR-3328
LMDV-3530
LMDV-4035
13
2 3/4
8 11/32
A
B
D
7
(178)
5-1/8
12-1/8
(308)
10-1/2
(
267
)
C
VENT FRAMING -
TOP VENT WITH ONE
90ϒ ELBOW
VENT FRAMING -
REAR VENT WITH
NO ELBOWS
** Framing should be constructed
of 2x4 or larger lumber
Inches (mm)
E
(130)
(130)
7
(308)
(178)
E is the required framing depth dimension when the
finish material (drywall) thickness is 1/2 in. (13mm).
A
**FRAMING WITH SQUARE HORIZONTAL TERMINATIONS (SV4.5HT-2)
5-1/8
12-1/8
1/2
Framing
Framing Dimensions
Model No.
A
B
C
D
E
LMDVT-3328
in.
33-1/4
33-1/4
------
37-3/4
12-7/8
mm
845
845
------
959
327
LMDVR-3328
in.
33-1/4
33-1/4
19-5/8
------
12-7/8
mm
845
845
498
------
327
LMDV-3530
in.
35-1/4
35-1/4
21-11/16
39-3/4
16
mm
895
895
551
1010
406
LMDV-4035
in.
40-1/4
40-1/4
26-11/16
44-3/4
16
mm
1022
1022
678
1137
406
G
E
F**
H
N
1-5/8
(42)
L
K
Top View
NOTE - Eyebrow
hood shown as positioned
in louvered front model.
*CONCENTRIC FLUE
FLUE - 4-1/2 (114)
COMBUSTION AIR - 7-1/2 (190)
GAS INLET
(Either Side
and bottom)
* LMDV models have a top and rear vent
Front View
(Louvered Front Model Shown)
ELECTRICAL INLET
2-3/4 x 2 (70 x 51)
COVER PLATE with
KNOCKOUT)
Right Side View
LMDVR models have only a rear vent
LMDVT models have only a top vent
J
M
**Note 1 - Collars protrude one inch on LMDVR-3328 model.
**See Note 1
** See Note 1
6 (152)
1-3/8 (35)
OPTIONAL ELECTRICAL
INLET KNOCKOUT,
REQUIRING A FIELD
PROVIDED JUNCTION BOX
(Either Side)
D
C
B
3 (76)
FRAMING SPACERS (Top & Sides & Rear)
1/2 (13)
A