Multizone Wall Mounted Air Handler Installation Manual

Indoor Unit
Installation
 Page 12 
Revised 5/14/2020
Refer to the following diagram to ensure proper distance from walls and ceiling:
4.75 inches or more4.75 inches or more
6 inches or more
6 feet or more
Step 2: Attach mounting plate to wall
The mounting plate is the device on which you
will mount the indoor unit.
1. Remove the screw that attaches the mounting
plate to the back of the indoor unit.
2. Place the mounting plate against the wall
in a location that meets the standards in
the Select Installation Location step. (See
Mounting Plate Dimensions for detailed
information on mounting plate sizes.)
3. Drill holes for mounting screws in places that:
• have studs and can support the weight of
the unit
• correspond to screw holes in the
mounting plate
4. Secure the mounting plate to the wall with the
screws provided.
5. Make sure that mounting plate is at against
the wall.
Step 3: Drill wall hole for connective piping
You must drill a hole in the wall for refrigerant
piping, the drainage pipe, and the signal cable
that will connect the indoor and outdoor units.
1. Determine the location of the wall hole based
on the position of the mounting plate. Refer
to Mounting Plate Dimensions on the next
page to help you determine the optimal
position. The wall hole should have a 2.5in
diameter at least, and angle slightly toward
the outside to facilitate drainage.
2. Using a 2.5in or 3.5in (depending on models)
core drill, drill a hole in the wall. Make sure
that the hole is drilled at a slight downward
angle, so that the outdoor end of the hole is
lower than the indoor end by about 1/4" to
1/2". This will ensure proper water drainage.
(See Fig. 3.2)
3. Place the protective wall cu in the hole.
This protects the edges of the hole and will
help seal it when you nish the installation
process.
NOTE FOR CONCRETE OR BRICK
WALLS:
If the wall is made of brick, concrete, or
similar material, drill 5mm-diameter (0.2in-
diameter) holes in the wall and insert the
sleeve anchors provided. Then secure the
mounting plate to the wall by tightening the
screws directly into the clip anchors.
Fig 3.1
When drilling the wall hole, make sure to
avoid wires, plumbing, and other sensitive
components.
CAUTION