24
Performing leak test & insulation
5
Select the insulator 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.
If installing in an unfavorable conditions, use thicker one.
Insulator’s heat-resistance temperature should be more than 120°C.
Refrigerant pipe
You can contact the gas side and liquid side pipes but the
pipes should not be pressed.
When contacting the gas side and gas side pipe, use 1 grade
thicker insulator.
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.
CAUTION
Additional insulation
Hanger
Refrigerant pipe insulation
a×3
a
Gas pipe
Liquid pipe
Insulation
Insulation
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
Internal temperature
is higher than 120°C
Ø12.7 ~ Ø50.80 13t
Gas
pipe
Ø6.35 13t 19t
Ø9.52
19t
25t
Ø12.70
Ø15.88
Ø19.05
Ø22.23
Ø25.40
Ø28.58
32t
Ø31.75
Ø38.10
Ø44.45
Ø50.80 25t 38t
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