28
English
Installation Procedure
Instal
lation Pr
oc
edur
e
Pipe
Pipe size
(mm)
Insulation type
(heating/cooling)
Remarks
Standard
(Less than
30°C,
85%)
High
humidity
(Over 30°C,
85%)
EPDM, NBR
Liquid
pipe
Ø6.35 to
Ø9.52
9t
9t
The internal
temperature
is higher than
120°C.
Ø12.7 to
Ø15.88
13t
13t
Gas
pipe
Ø6.35
13t
19t
Ø9.52
19t
25t
Ø12.70
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
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
Drain socket
Drain hose
Large seailng pad
Be sure to bond the drain
hose and the main pipe.
Drain pipe
Drain hose
PVC Tube Joint
+ VP25 (OD: 32 mm, ID: 25 mm)
Drain pipe
CAUTION
Check that the indoor unit is level with the ceiling by
using the leveller.
• Install air ventilation to drain condensation smoothly.
Air ventilation
Ceiling
