
30 / 124 EN
Multi Split Type Air Conditioner / User Manual
Notes on drilling hole in wall: You must drill a hole
in the wall for the refrigerant piping, and the signal
cable that will connect the indoor and outdoor
units.
1. Determine the location of the wall hole based on
the location of the outdoor unit.
2. Using a 65-mm (2.5”) core drill, drill a hole in
the wall.
C
When drilling the wall hole, make
sure to avoid wires, plumbing,
and other sensitive components.
3. Place the protective wall cuff in the hole. This
protects the edges of the hole and helps seal it
when you finish the installation process.
A
WARNING!
When drilling into
concrete, eye protection is
recommended at all times.
When select a 24k indoor unit
The 24K indoor unit can only be connected with
an A system. If there are two 24K indoor units,
they can be connected with A and B systems.
Connective pipe size of an A and B system
Indoor Unit
capacity
(Btu/h)
Liquid
Gas
7K/9K/12K
1/4
3/8
12K/18K
1/4
1/2
24K
3/8
5/8
5�5 Refrigerant piping
connection
C
For quick-connect models,
please refer to the internal
machine manual for the
installation method of the
connecting pipe. The external
machine manual does not repeat
the instructions.
When connecting refrigerant piping, do not let
substances or gases other than the specified
refrigerant enter the unit. The presence of other
gases or substances will lower the unit’s capacity,
and can cause abnormally high pressure in the
refrigeration cycle. This can cause explosion and
injury.
5 Installation
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