Indoor Units; Indoor Unit Wall Mounts; System Clearances; Outdoor Unit - Lennox MHA Series Installation Instructions Manual

Indoor Units

SIDE VIEW
Figure 5. Indoor Unit Dimensions - Inches (mm)
A
Size
in. mm
9K 29­5/8 752
12K 32­3/4 832
18K 39­1/8 994
24K 44 1118

Indoor Unit Wall Mounts

MHWA009S4
4
(102)
1-7/8
28-1/2 (724)
(48)
Left Rear Hole
2-1/2 in. (64 mm)
diameter
Figure 6. 9K Indoor Unit Wall Plate Dimensions -
Inches (mm)
MHWA012S4
7-1/2
(191)
1-3/4
31-5/8 (803)
(44)
Left Rear Hole
2-1/2 in. (64 mm)
diameter
Figure 7. 12K Indoor Unit Wall Plate Dimensions -
Inches (mm)
TOP VIEW
A
FRONT VIEW SIDE VIEW
BOTTOM VIEW
B
in. mm in.
11­3/8 289 8­5/8
11­3/4 298 8­3/4
12­1/2 318 9­7/8
13­1/4 337 10­1/4
13-3/4 (349)
7 (178)
5-3/8
(136)
1-1/2 (38)
2 (51)
Right Rear Hole
2-1/2 in. (64 mm)
diameter
16-3/4 (425)
9-1/8 (232)
5
(127)
1-3/4 (44)
Right Rear Hole
2-1/2 in. (64 mm)
diameter
MHWA018S4
6-3/4 (171)
2-1/4
(57)
B
2-1/2 in. (64 mm)
Figure 8. 18K Indoor Unit Wall Plate Dimensions -
C
MHWA024S4
8-5/8 (219)
1-7/8
(48)
C
mm
219
2-1/2 in. (64 mm)
222
Figure 9. 24K Indoor Unit Wall Plate Dimensions -
251
260

System Clearances

Outdoor Unit

12
(305)
Wall-Mount
Unit Outline
Figure 10. Outdoor Unit Clearances - Inches (mm)
1-3/4 (44)
Wall-Mount
Unit Outline
5
5-3/8 (137)
38 (965)
Left Rear Hole
diameter
Inches (mm)
21-3/4 (553)
6-7/8 (175)
42-1/2 (1080)
Left Rear Hole
diameter
Inches (mm)
24 (610)
24
(610)
Minimum rear clearance can be 6 inches (152 mm) when mounted on brackets
1
and with no obstructions on the other three sides.
20-3/8 (518)
5-5/8
(143)
2-1/4 (57)
Wall-Mount
Unit Outline
2-3/8 (60)
Right Rear Hole
2-1/2 in. (64 mm)
diameter
11-7/8
(301)
2-1/8 (54)
Wall-Mount
Unit Outline
1-7/8 (48)
Right Rear Hole
2-1/2 in. (64 mm)
diameter
Air Inlet
12
1
(305)
79
(2007)
Air Outlet