User Manual

AA
16
1. To avoid condensation problems, place T13.0 or thicker
Acrylonitrile Butadien Rubber separately around each
refrigerant pipe.
Always make the seam of pipes face upwards.
Note
No gap
NBR(T13.0 or thicker)
2.
Wind insulating tape around the pipes and drain hose
avoiding to compress the insulation too much.
Insulation cover pipe
Indoor unit
Be sure to overlap
the insulation
Insulation pipe
Must fit tightly against
body without any gap.
3.
Finish wrapping insulating tape around the rest of the
pipes leading to the outdoor unit.
4.
The pipes and electrical cables connecting the indoor
unit with the outdoor unit must be fixed to the wall with
suitable ducts.
Once you have checked that there are no leaks in the system,
you can insulate the piping and hose.
Insulation
1. Install the drain pipe as shortly as possible.
 Give a slightly slant to the drainpipe for proper
drainage of condensate water.
 There must be no gap on the connected part so that
the drainpipe is not separated from the flexible hose.
2. Insulate the drainpipe, and then fix it as indicated.
 Whole drainpipe should be insulated by 5t(or more)
insulation to prevent water condensation.
Insulation drainpipe
Band
Band
Flexible
hose
Drain
hose port
Drainpipe
Adhesives
Insulation cover band
Insulation cover drain
Band(Not supplied)
Indoor
Unit
All refrigerant connection must be accessible, in order
to permit either unit maintenance or removing it
completely.
 Install the insulation not to get wider and use the adhesives on
the connection part of it to prevent moisture from entering.
 Wind the refrigerant pipe with insulation tape if it is exposed to
outside sunlight.
 Install the refrigerant pipe respecting that the insulation does
not get thinner on the bent part or hanger of pipe.
 Add the additional insulation if the insulation plate gets thinner.
Additional insulation
Refrigerant pipe insulation
a×3
a
Hanger
5. Select the insulation of the refrigerant pipe.
 Insulate the gas side and liquid side pipe referring to
the thickness according to the pipe size.
 Indoor temperature of 30°C and humidity of 85% is the
standard condition. If installing in a high humidity condition,
use one grade thicker insulator by referring to the table
below.
 Insulator’s heat-resistance temperature should be
more than 120°C.

When installing insulation in places and conditions below,
use the same insulation that is used for high humidity
conditions.
<Geological condition>
- High humidity places such as shoreline, hot spring, near
lake or river, and ridge (when the part of the building is
covered by earth and sand.)
<Operation purpose condition>
- Restaurant ceiling, sauna, swimming pool etc.
<Building construction condition>
- The ceiling frequently exposed to moisture and cooling is
not covered.
e.g. The pipe installed at a corridor of a dormitory and
studio or near an exit that opens and closes frequently.
- The place where the pipe is installed is highly humid due to
the lack of ventilation system.
Pipe Pipe size
Insulation Type (Heating/
Cooling)
Remarks
Standard
[30°C, 85%]
High humidity
[30°C, over
85%]
EPDM,NBR
Liquid
pipe
Ø6.35 ~ Ø9.52 9t 9t
Internal
temperature
is higher than
120°C
Ø12.7 ~ Ø50.80 13t 13t
Gas
pipe
Ø6.35 13t 19t
Ø9.52 ~ Ø25.40
19t
25t
Ø28.58 ~ Ø44.45 32t
Ø50.80 25t 38t
Indoor Unit Installation
Drain pipe and Drain hose installation