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Installation Procedure
CAUTION
• Make sure that all refrigerant connection must be
accessible for easy maintenance and detachment.
• 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
a x 3
Pipe
inch
1/4 to 3/8
Liquid pipe
1/2 to 2
1/4
3/8 to 1
Gas pipe
1 1/8 to 1 3/4
2
14
English
Hanger
Refrigerant pipe insulation
a
Pipe size
mm
inch
6.35 to 9.52
3/8
12.7 to 50.80
1/2
6.35
1/2
9.52 to 25.40
3/4
28.58 to 44.45
3/4
50.80
CAUTION
• Must fit tightly against body without any gap.
• All refrigerant connection must be accessible, in order to
permit either unit maintenance or removal.
5 Select the insulation of the refrigerant pipe.
• Insulate the gas side and liquid side pipe, noting
the insulation thickness that must differ according
to the pipe size.
• Standard: Less than an indoor temperature of
86°F (30°C), with humidity at 85%. If installing in a
high humidity environment, use one grade thicker
insulator by referring to the table below.
If installing in an unfavourable environment, use
thicker one.
• The heat-resistance temperature of the insulator
must be more than 248°F (120°C).
Insulation type (heating/cooling)
General
[86°F (30°C), 85%]
EPDM, NBR
mm
9
13
13
19
19
1
25
High humidity
[86°F (30°C), 85%]
inch
mm
3/8
9
1/2
13
3/4
19
temperature
1
25
11/4
32
11/2
38
Remarks
Heating
resisting
over 248°F
(120°C)
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