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4.2 Initial Check
Install the indoor unit in a space for easy operation
and maintenance as shown in Fig. 4.1.
Provide a service access door near the unit
piping connection area on the ceiling.
Check to ensure that the ceiling is strong
enough to hang the indoor unit.
Check if the ceiling surface is flat for the air
panel installation.
≥4.9ft.
≥4.9ft.
≥4.9ft.
(1.5m)
(1.5m)
(1.5m)
Piping Connection
Service Access
Service Access
Door ≥ 17-23/32in.(450mm)
Door ≥ 17-23/32in.(450mm)
Distance from Wall Side
19-11/16in.(500mm)
Piping Connection
3-15/16in.(100mm)
39-3/8in.(1000mm)
Service Space
Fig. 4.1 Space around Indoor Unit
Select the installation location as follows:
(A) Minimum Space
(B) Down Slope Pitch of Drain Pipe: 1/25~1/100
Fig. 4.2 Installation Location of Indoor Unit
The indoor unit must be installed at an appropriate
location so that the indoor temperature can be evenly
distributed.
There should be no obstruction of air flow at the vent.
≥4.9ft.
≥9.8ft.(3m)
(1.5m)
≥5-29/32in.
(150mm)
Piping Connection
Piping Connection
Service Access
Door ≥ 17-23/32in.(450mm)
3-15/16in.(100mm)
19-11/16in.(500mm)
25/64~25/32in.(10~20 mm)
9-41/64in.(245 mm)
Indoor Unit Height in Ceiling
Drain Pipe
1/25~1/100 Down Slope
Do not install the indoor unit in a machinery
shop or kitchen where vapor from oil or its mist
flows to the indoor unit.
Once the oil deposits on the heat exchanger, it
may impair the performance of indoor unit and
cause damage to plastic parts therein.
Pay attention to the following points when the
indoor unit is installed in a hospital or other
facilities where there are electronic waves
from medical equipment, etc.
(A) Do not install the indoor unit where the
electromagnetic wave is directly radiated to the
electrical box, remote control cable or remote
control.
(B) Install the indoor unit and components as far as
practical or at least 9.8ft.(3m) from the
electromagnetic wave radiator.
(C) Install the remote control switch in an iron box.
Arrange the remote control cable in an iron
tube. Ground the iron box and iron tube.
(D) Install a noise filter when the power supply emits
harmful noises.
To avoid any corrosive action to the heat
exchangers, do not install the indoor unit in
an acid or alkaline environment.
4.3 Installation
4.3.1 Opening of False Ceiling and Suspension Bolts
(1) Select appropriate location and direction for installation
of indoor unit, and determine its location. Pay careful
attention to the space for the piping, wiring and
maintenance.
(2) Cut out the area for the indoor unit in the false ceiling
and install suspension bolts, as shown in Fig. 4.2.
20-55/64(530) Dimension of Suspension Bolts
22-7/16(570) Unit Size
22-41/64~23-27/64(575~595)Dimension of Opening
24-13/32(620) Dimension of Panel
Fig. 4.3 Opening of False Ceiling and Suspension Bolts
(3) Ensure that the ceiling is horizontally level;
otherwise, proper drainage flow would be impossible.
(4 ) Strengthen the opening parts of the ceiling.
(5) Mount suspension bolts, as shown in the figure.
2
Unit: in.(mm)
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