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Selecting the insulator of the refrigerant pipe
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According to pipes size, insulate pipes on gas and liquid side by selecting appropriate insulations.
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Standard condition is under a temperature of 30°C and a humidity of 85%. If the units are installed in extreme
weather conditions, select the insulator by table below.
Pipe type
Pipe diameter (mm)
Thickness of insulator
Remarks
Normal
(Under 30°C, 85%)
High humidity
(Over 30°C, 85%)
EPDM, NBR
Liquid
ø6.35~ø19.05
9
9
The material shall has
heat resistant over
120°C
ø12.70~ø19.05
13
13
Gas
ø6.35
13
19
ø9.52
19
25
ø12.70
ø15.88
ø19.05
• Install the insulation not to be get wider and use the adhesives on the connection part of it to prevent
moisture 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.
CAUTION
Refrigerant piping work
