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26
English
Installation Procedure
Installation Pr
oc
edur
e
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When installing insulation in the places and conditions
below, use the same insulation that is used for high
humidity conditions.
<Geological condition>
High humidity locations such as shorelines, hot springs,
lake or riversides, and ridges (when part of the building is
covered by earth and sand)
<Operation purpose condition>
Restaurant ceiling, sauna, swimming pool etc.
<Building construction condition>
Ceilings frequently exposed to moisture and cooling are
not covered. For example, pipes installed at a corridor of a
dormitory and studio or near an exit that opens and closes
frequently.
Places (where the pipes are installed) that are highly
humid due to a lack of ventilation.
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Refrigerant pipe before EEV kit and MCU or without
EEV kit and MCU
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You can contact the gas side and liquid side pipes
but the pipes should not be pressed.
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When contacting the gas side and liquid side pipe,
use 1 grade thicker insulator.
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Refrigerant pipe after EEV kit and MCU
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Install the gas side and liquid side pipes, leave
10mm of space.
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When contacting the gas side and liquid side pipe,
use 1 grade thicker insulator.
6
Fix the flexible hose to the drain pipe.
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The connection port of the flexible hose and PVC drain
pipe must be fixed with PVC adhesives.
Check out that the connected part doesn’t leak.
Drain hose
PVC Tube Joint
+ VP25 (OD: 32 mm, ID: 25 mm)
VP 20 (Drain pipe)
(OD: 26mm, ID: 20mm)
7
Connect the flexible hose to the drain hose port.
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Make sure that a rubber ring is installed on the drain
hose port.
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The drain hose port location differs depending on the
unit types.
Drain hose port
CAUTION
Check that the indoor unit is level with the ceiling by
using the leveller.
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Install air ventilation to drain condensation smoothly.
Ceiling
Air ventilation
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If it is necessary to increase the height of the drain
pipe, install the drain pipe straight within 300 mm
from the drain hose port. If it is raised higher than 550
mm, there may be water leaks.
Band joint
300 mm
or less 20 mm or more
Ceiling
1/100 or more
300
to
550 mm
Drain hose