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5. FINISHING
5.1. Installing insulation
• Determine the thickness of the insulation material by referring to Table A.
Table A, Selection of insulation
(for using an insulation material with equal heat transmission rate or below
0.040 W/(m·k))
Relative humidity
[mm (in.)]
6.35 (1/4)
9.52 (3/8)
12.70 (1/2)
Pipe diameter
15.88 (5/8)
19.05 (3/4)
• If the ambient temperature and relative humidity exceed 32 °C, increase the level of
heat insulation for the refrigerant pipes.
En-10
Insulation material
Minimum thickness [mm]
70%
75%
80%
or more
or more
or more
or more
8
10
13
9
14
11
12
15
10
12
10
16
10
13
16
85%
17
18
19
20
21
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