Determining Wall Mounting Plate Location; Installation Of Wall Mounting Plate; Installation Of Wall Sleeve - Lennox MCB Series Installation Instruction

• Areas exposed to strong electromagnetic forces.
• Areas exposed to acids or alkaline detergents.
DO
• Place the unit so that it is not exposed to direct sun­
light.
• Ensure the structural wall can support the weight of
the unit.
• Select a location where condensate line will have the
shortest run to a suitable drain per local codes.
• Allow sufficient space around unit for proper operation
and maintenance.
• Install unit a minimum of 3 feet (1m) away from any
antenna, power cord (line) radio, telephone, security
system, or intercom. Electrical interference and radio
frequencies from any of these sources may affect op­
eration.
• Be sure to instruct customers how to properly operate
the unit (especially maintenance of air filter, and oper­
ation procedure) by having them carry out operations
themselves while looking at the manual provided with
the controller.

Determining Wall Mounting Plate Location

Left piping
Left back piping
Figure 11. Determining Exit Locations
1. Remove the wall mounting plate from the back of the
indoor unit.
2. Determine the best exit location for utility bundle
(line set, condensate line and wiring). See the
following section concerning wall sleeve installation
instructions.
3. Position the wall mounting plate on the wall so that,
when installed, the unit will be at least 6 inches (152
mm) from the ceiling and 5 inches (127 mm) from the
wall on either side. The wall mounting plate must be
level side­to­side.
4. Use the wall mounting plate as a template to
determine the exit point for utility bundle. Mark the
wall to facilitate drilling hole for utility bundle.

Installation of Wall Mounting Plate

Install the wall mounting plate so that it is correctly
positioned horizontally and vertically. The indoor unit must
be installed level on the wall to allow proper condensate
drainage.
1. Use a carpenter's level or measuring tape to verify the
wall mounting plate is horizontally level.
2. Secure the wall mounting plate to the wall using the
provided screws and screw anchors.
NOTE: It is important to use all screws provided to secure
the wall mounting plate to the wall. Additional holes
may be drilled through the metal wall mounting
Right piping
Right back piping
plate to better secure wall plate. Field-provided
anchors/fixings may be required depending on
wall construction. Use the appropriate type of
anchors for the application.
3. The wall mounting plate must be installed flush
against the wall so that the indoor unit will be flush
after installation. Any space between the wall and unit
will cause noise and vibration.
4. The wall mounting plate must be installed horizontally
level on the wall.

Installation of Wall Sleeve

The utility bundle may be routed out of the back of the unit
or out either side. If the bundle is to be routed out the back
through an external wall, use a field-provided wall sleeve
to protect the utility bundle.
NOTE: If the utility bundle will be routed out the side of the
indoor unit and up the wall above a false ceiling,
continue to the next section.
1. Prior to making the hole and installing the wall sleeve
for the utility bundle, check to ensure that there are
no other utilities located in the wall behind the hole
location.
2. Cut a hole in the wall using a suitable hole saw. Hole
should be at a slight downward slant - 3/16" to 3/8"
toward the outdoor side.
3. Measure the thickness of the wall from the inside
edge to the outside edge and cut the field-provided
wall sleeve at a slight angle 1/4" (6 mm) shorter than
the thickness of the wall.
INSIDE
Figure 12. Boring Hole for Wall Sleeve
USE SUITABLE TOOL TO CUT PVC FOR WALL
SLEEVE AT SLIGHT ANGLE AS SHOWN.
Figure 13. PVC Wall Sleeve Installation
NOTE: When passing bundled services through an
exterior brick or concrete wall, protect the
copper pipes and wiring from the effects of these
construction materials by using a sleeve made
of suitable material. The integrity of copper pipe
and wiring can deteriorate when exposed to these
construction materials.
7
OUTSIDE
Typical
installation
procedure
shown.