Samsung AM TXMDEH Series Installation Manual page 29

Insulating refrigerant pipe or Y-joint
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.
Use EPDM insulation which meets the following condition.
Item
Density
Dimension change route by heat
Water absorption rate
Thermal conductivity
Moisture transpiration factor
Moisture transpiration grade
Formaldehyde dispersion
Oxygen rate
Selecting the insulation of refrigerant pipe
Insulate the gas pipe and liquid pipe by referring to the thickness of insulator for each pipe size.
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)
Ø6.35~Ø9.52
Liquid pipe
Ø12.70~Ø50.80
Ø6.35
Ø9.52
Ø12.70
Gas pipe
Ø15.88
Ø19.05
Ø22.23
Unit
g/cm
g/cm
kcal/m·h·˚C
ng/(m
g/(m
mg/L
Insulation(Cooling, Heating)
Standard High humidity
[30 °C, 85 %] [30 °C, 85 % or more]
EPDM, NBR (mm)
9t
13t
13t
19t
3
%
3
2
·s·Pa)
2
·24h)
%
19t
Heat resisting temperature is
25t
Standard
0.048~0.096
-5 or less
0.005 or less
0.032 or less
15 or less
15 or less
-
25 or more
Remarks
more than 120 °C
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