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Pipe size
Pipe
inch
Ø1/4~Ø3/8
Liquid pipe
Ø1/2~Ø3/4
Ø1/4
Ø3/8
Gas pipe
Ø1/2
Ø5/8
• When installing insulation in the 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
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).
Insulation type (heating/cooling)
Standard (Less than 86°F, 85%)
EPDM, NBR
inch
3/8
1/2
1/2
3/4
High humidity (Over 86°F, 85%)
inch
3/8
1/2
3/4
1
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.
Remarks
The internal
temperature is higher
than 248°F.
Drain socket
Drain hose
Drain pipe
Be sure to bond the drain
hose and the main pipe.
PVC Tube Joint
+ VP25 (OD: 1.26 inch,
ID: 0.98 inch)
Drain pipe
Air ventilation
Ceiling
English
13
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