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Insulation type
(heating/cooling)
Standard
Pipe size
Pipe
(Less than
(mm)
30°C,
85%)
EPDM, NBR
Ø6.35 to
9t
Ø9.52
Liquid
pipe
Ø12.7 to
13t
Ø15.88
Ø6.35
13t
Ø9.52
Gas
pipe
Ø12.70
19t
Ø15.88
• 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.
Step 10 Installing the drain hose and
drain pipe
1 Push the supplied drain hose as far as possible over
the drain socket.
2 Tighten the metal clamp as shown in the picture.
3 Wrap the supplied large sealing pad over the metal
clamp and drain hose to insulate and fix it with
High
humidity
Remarks
(Over 30°C,
85%)
9t
13t
The internal
temperature
19t
is higher than
120°C.
25t
clamps.
4 Insulate the complete drain piping inside the building
(field supply).
If the drain hose cannot be sufficiently set on a slope,
fit the hose with drain raising piping (field supply).
5 Push the drain hose up to insulation when connecting
the drain hose to drain socket.
Metal clamp
Large seailng pad
Drain hose
CAUTION
Check that the indoor unit is level with the ceiling by
using the leveller.
• Install air ventilation to drain condensation smoothly.
Drain socket
Drain hose
Drain pipe
Be sure to bond the drain
hose and the main pipe.
PVC Tube Joint
+ VP25 (OD: 32 mm, ID: 25 mm)
Drain pipe
Air ventilation
Ceiling
English
13
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