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Installation
Suspension base of the indoor unit
1. Selecting the suspension base
The suspension base is a wooden or reinforced concrete frame structure. It must be firm and reliable to
support the weight of more than 200 kg and able to withstand vibrations for long periods.
2. Attaching the suspension base
Fix the suspension bolts as shown on the right, either by means of a strut or a wooden bracket. If this unit
is installed on a sloped ceiling, a damper block must be installed between the ceiling and the air out-
let panel to ensure that the unit is installed on a level surface. Installation is carried out as shown in the
drawing below.
Suspension of the indoor unit
1. Adjust the relative position of the suspension hook on the suspension screw.
suspension screw.
2. Tighten the screw and make sure that the four hooks 2. Tighten the bolt and
make sure that the four hooks are in perfect contact with the nuts and washers,
and that the unit is firmly and reliably suspended on the hooks.
3. Make sure that it is securely fastened and that it does not shake or sway once
the unit is installed.
4. Make sure that the centre of the indoor unit is aligned with the centre of the
ceiling opening.
5. The installation of the cassette unit with the external electrical control panel is
referred to the following figure. The installation of the cassette unit with the exter-
nal electrical control panel is referred to the figure below:
Installation of the drain pipe
1. The drain pipe must be properly insulated to prevent the formation of condensation.
It must be installed with a downward slope.
To ensure that the water drains properly, the unit must be horizontal or inclined towards the drain pipe
when installation is complete.
2. The unit has a drain pump that will lift up to 1200mm. However, after the pump stops, the water still in
the pipe will drain again and may overflow the drain pan causing a protective shutdown. For this reason,
install the drain pipe as shown below:
3. When several units are drained on a common
drain line, the drain line should be installed about
100 mm below the drain outlet of each unit, as
shown in the drawing:
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