Fireplace And Framing Specifications - Lennox MPDT33RNM Installation Instructions Manual

LENNOX HEARTH PRODUCTS • MERIT PLUS
Model A
33-1/4
MPdT33
845
in. 33-1/4
MPdR33
mm 845
in. 35-1/4
MPd35
mm 895
in. 40-1/4
MPd40
mm 1022
in. 45-1/4
MPd45
mm 1149
diagrams, illustrations and photographs are not to scale. Consult installation
instructions. Product designs, materials, dimensions, specifications, colors,
and prices are subject to change or discontinuance without notice.
Thermal Efficiency (%)
Natural Gas
Fireplace
AFUE EnerGuide
Model
(P4)
MPdT33 62 45
MPdR33 61 53
MPd35 62 53
MPd40 67 59
MPd45 67 59
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 20).
Top View
Rear/Side
G
Framing
H
Spacers
Header
Spacing
Top
Standoffs
Notes:
[1] MPD models have a top and rear vent. MPDR models
have a rear vent only. MPDT models have a top vent only.
[2] Collars protrude one inch on MPDT33 and MPDR33 models.
Model
in. 33-1/8
MPd33
mm
in. 35-1/8
MPd35
mm
in. 40-1/8
MPd40
mm 1019
in. 40-1/8
MPd45
mm 1146
Figure 12 - Fireplace and Framing Specifications
10
®
Framing
B C d
33-1/4 --- 37-3/4
845 --- 959
33-1/4 19-5/8 ---
845 498 ---
35-1/4 21-11/16 39-3/4
895 551 1010
40-1/4 26-11/16 44-3/4
1022 678 1137
40-1/4 26-11/16 44-3/4
1022 678 1137
Notes
Propane
AFUE EnerGuide
(P4)
64 49
64 55
60 55
67 60
67 59
Concentric Flue:
Flue 4-1/2" (114 mm);
Combustion Air
7-1/2" (190 mm).
See Notes [1] and [2].
A
J
A B C d
30-1/8 17 27-1/2
841 765 432 699
32-1/8 19 29-1/2
892 816 483 749
37-1/8 24 34-1/2
943 610 876
37-1/8 24 39-1/2
943 610 1003
DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS
VENT FRAMING:
TOP VENT WITH ONE
90° ELBOW
E
12-7/8
VENT FRAMING:
327
REAR VENT WITH
12-7/8
NO ELBOWS
327
16
406
16
406
16
406
B
1/2
Based on CSA P.4.1-09
Front View
3 (76)
E
Gas Inlet (either
side and bottom)
Optional Electrical Inlet
Knockout requiring a
C B
Field-Provided Junction
D
E F G
33-1/8 19-5/8 21-1/2 10-3/4
841 498 546 273
35-1/8 21-11/16 24-7/8 12-7/16
892 551 632 316
40-1/8 26-11/16 29-7/8 14-15/16
1019 678 759 379
45-1/8 26-11/16 34-7/8 17-7/16
1146 678 886 443
10-1/2
( )
267
5-1/8
(130)
5-1/8
D (130)
C
E
A
A
Dimension "E" is the required framing depth when the
finish material (drywall) thickness is 1/2 in. (13mm).
Right Side View
N
6 (152)
L
Box (either side)
1-3/8 (35)
K
H J K
6-13/16 3 8-11/32
173 76 212
9 3
220 76 220
9 3
220 76 220
9 3
220 76 220
Framing should be
constructed of 2x4
or larger lumber.
7
(178)
12-1/8
(308)
7
(178)
12-1/8
(308)
Inches (mm)
1/2 (13)
See Note [2].
F (rear vent
models only)
1-5/8 (42)
Electrical Inlet
M
2-3/4" x 2"
(70 x 51 mm)
Cover Plate
with Knockout
L M N
2-3/4 13
70 330
9 3 16
76 406
9 3 16
76 406
9 3 16
76 406