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Installation Procedure
Step 12 Insulating the refrigerant
pipes
1 Once you have checked that there are no leaks in the
system, you can insulate the piping and hose.
No gap
NOTE
• When insulate the pipe, be sure to overlap the
insulation.
• The insulation has to be produced in full compliance
of European regulation reg. EEC / EU 2037/ 2000
that requires the use of sheaths insulation form
without using CFC and HCFC gases for health and the
environment.
CAUTION
• When insulating the pipe, use non-slit insulator.
2 Select the insulation of the refrigerant pipe.
• Insulate the gas side and liquid side pipe referring
to the thickness according to the pipe size.
• Less than Indoor temperature of 86℉(30℃) 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. If installing in an unfavourable conditions,
use thicker one.
• Insulator's heat-resistance temperature should be
more than 248℉(120℃).
26
English
DB68-11274A-00_IM_CAC Universal Outdoor_AA_EN.indd 26
DB68-11274A-00_IM_CAC Universal Outdoor_AA_EN.indd 26
NBR
Insulation Type
(Cooling, Heating)
General
Outer diameter
[86°F(30°C),
Pipe
85%]
mm
inch
mm
6.35~9.52
1/4~3/8
9
Liquid
pipe
12.7~50.80
1/2~2
13
6.35
1/4
13
9.52~25.4
3/8~1
19
Gas
pipe
1 1/8~1
28.58~44.45
19
3/4
50.8
2
25
• 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.)
<Geological 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.
Step 13 Checking the earthing
If the power distribution circuit does not have a earthing
or the earthing does not comply with specifications, an
earthing electrode must be installed. The corresponding
accessories are not supplied with the air conditioner.
1 Select an earthing electrode that complies with the
specifications given in the illustration.
High humidity
[86°F(30°C),
Remarks
over 85%]
EPDM, NBR
inch
mm
inch
3/8
9
3/8
1/2
13
1/2
Heating
1/2
19
3/4
resisting
temperature
3/4
25
1
over
248°F(120°C)
3/4
32
1 1/4
1
38
1 1/2
2021-09-14 오전 9:22:00
2021-09-14 오전 9:22:00
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