Installation Guide

Page 20mrcool.com
Installation Summary - Indoor Unit
Installation Instructions
– Indoor Unit
PRIOR TO INSTALLATION:
Before installing the indoor unit, refer to the
label on the product box to make sure that
the model numbers of the indoor unit and
the outdoor unit match.
Step 1: Selecting an installation location
Before installing the indoor unit, you must choose
an appropriate location. The following standards
and guidelines will help you choose an appropriate
location for the unit.
Proper installation locations should meet
the following standards
NOTE ABOUT WALL HOLE:
5
Indoor Unit Installation
If there is no fixed refrigerant piping:
While choosing a location, be sure that you
leave ample room for a wall hole (see the Drill
Wall Hole for Connective Piping step on the
following pages) for the signal cable and
refrigerant piping, which connect the indoor
and outdoor units. The default position for all
piping is the right-hand side of the indoor unit
(while facing the front of the unit). After the
piping and signal wire are installed, use the
provided neoprene (spray foam can be used
instead, if you prefer) to pack the space left in
hole, in order to seal it and make it airtight.
If you are planning on mounting air handlers to interior walls, there are some aspects that need to be
considered when it comes to drilling a wall hole and routing line sets to the outdoor condenser. If you are
not able to mount air handlers to exterior walls, you will need to run the line sets to a central location
within the house, such as an attic, basement, or crawlspace, and have them exit the house (to the
outdoor unit) from that location. Another aspect to consider is the condensate drain pipe. A drain pipe is
necessary to allow water (condensate) to exit the air handler. If you mount an air handler in a location
that is difficult to run a drain hose down and outside, it may be necessary to use a condensate pump (not
included, but available from online retailers). These are used to pump the water from the air handler and
prevent it from ruining the interior of your home.
NOTE ON MOUNTING AIR HANDLERS TO INTERIOR WALLS
Good air circulation
Convenient drainage
Noise from the unit will not disturb
other people
Firm & solid location that will not vibrate
Strong enough to support the weight of
the unit
A location that is at least 3.3 ft (1 m) from all
other electronic devices (e.g., TV, radio,
computer)
DO NOT install the indoor unit in any of the
following locations:
Near any source of heat, steam, or
combustible gas.
Near flammable items such as curtains
or clothing.
Near any obstacles that could block air
circulation.
Near a doorway or where outside air may
blow directly on the indoor unit.
In a location subject to direct sunlight
exposure.