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Refrigerant pipe installation
f
Be sure to plug the rest of drain holes not connected with drain plugs using drain caps.
Drain cap
Drain plug
Insulating refrigerant pipe or Y-joint
f
You must check if there is a gas leak before completing all the installation process. After you check that the gas does not
leak, you must insulate the pipe and hose.
f
Use EPDM insulation which meets the following condition.
Item
Unit
Standard
Density
g/cm
3
0.048~0.096
Dimension change route by heat
%
-5 or less
Water absorption rate
g/cm
3
0.005 or less
Thermal conductivity
kcal/m·h·˚C
0.032 or less
Moisture transpiration factor
ng/(m
2
·s·Pa)
15 or less
Moisture transpiration grade
g/(m
2
·24h)
15 or less
Formaldehyde dispersion
mg/L
-
Oxygen rate
%
25 or more
Selecting the insulation of refrigerant pipe
f
Insulate the gas pipe and liquid pipe by referring to the thickness of insulator for each pipe size.
f
The standard condition is 30°C, with humidity less than 85%. In the conditions of high humidity, use one grade thicker.
Pipe
Pipe size (mm)
Insulation(Cooling, Heating)
Remarks
Standard
[30°C, 85%]
High humidity
[30 °C, 85% or more]
EPDM, NBR
Liquid pipe
Ø6.35~Ø9.52
9t
I
Heat resisting temperature is
more than 120°C
Ø12.70~Ø50.80
13t
I
Gas pipe
Ø6.35
13t
19t
Ø9.52
19t 25t
Ø12.70
Ø15.88
Ø19.05
Ø22.23
