Multizone Wall Mounted Air Handler Installation Manual

Indoor Unit
Installation
 Page 13 
Revised 5/14/2020
Correct orientation of Mounting Plate
MOUNTING PLATE DIMENSIONS
Dierent models have dierent mounting
plates. In order to ensure that you have
ample room to mount the indoor unit, the
diagrams to the right show dierent types
of mounting plates along with the following
dimensions:
• Width of mounting plate
• Height of mounting plate
• Width of indoor unit relative to plate
• Height of indoor unit relative to plate
• Recommended position of wall hole (both to
the left and right of mounting plate)
• Relative distances between screw holes
Fig 3.2
Wall
Indoor
Outdoor
1/4" to 1/2"
BM09M22WM
4”
7.05in”
5.35”
1.45”
11.4”
1.95”
Right rear wall
hole 2.5”
Left rear wall
hole 2.5”
Indoor unit outline
28.45”
1.95”
13.7”
BM12M22WM
7.55”
9.15”
16.8”
5.05”
1.7”
11.7”
Left rear wall
hole 2.5”
Right rear wall
hole 2.5”
Indoor unit outlin
e
31.6”
1.7”
1.7”
BM18M21WM
5.65”
2.3”
12.55”
2.25”
1.55”
Right rear wall
hole 2.5”
Left rear wall
hole 2.5”
38”
15.45”
1.35”
Indoor unit outline
20.37”
BM24M21WM
8.6”
21.77”
11.8”
13.2”
Left rear wall
hole2.5”
Right rear wall
hole 2.5”
42.5”
2.1”
1.85”
3”
2.1”
1.85”
5.85”
5.95”
6.85”
Indoor unit outline
NOTE: When the gas side connective pipe is 5/8"
or more, the wall hole should be 3.5 "diameter.