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Refrigerant pipe installation
Insulating refrigerant pipe or Y-joint
X You must check if there is a gas leak before completing all the installation process . After you check that the gas does not
X
leak, you must insulate the pipe and hose .
X Use EPDM insulation which meets the following condition .
X
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
X Insulate the gas pipe and liquid pipe by referring to the thickness of insulator for each pipe size .
X
X The standard condition is 30°C(86°F), with humidity less than 85% . In the conditions of high humidity, use one grade
X
thicker .
Pipe
Ø6 . 3 5 ~ Ø9 . 5 2 (1/4 ~ 3/8)
Liquid pipe
Ø12 . 7 0 ~ Ø50 . 8 0 (1/2 ~ 2)
Gas pipe
28
Pipe size [mm (inch)]
Ø6 . 3 5 (1/4)
Ø9 . 5 2 (3/8)
Ø12 . 7 0 (1/2)
Ø15 . 8 8 (5/8)
Ø19 . 0 5 (3/4)
Ø22 . 2 3 (7/8)
Unit
g/cm
3
%
g/cm
3
kcal/m·h·˚C
ng/(m²·s·Pa)
g/(m²·24h)
mg/L
%
Insulation(Cooling, Heating)
Standard
High humidity
[30°C (86°F),
[30 °C (86°F),
Below 85%]
85% or more]
EPDM, NBR
9t
13t
13t
19t
Standard
0 . 0 48~0 . 0 96
-5 or less
0 . 0 05 or less
0 . 0 32 or less
15 or less
15 or less
-
25 or more
Remarks
19t
Heat resisting
temperature is more
than 120°C (248°F)
25t
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