Samsung AM***XMDCH Series Installation Manual page 28

Refrigerant pipe installation
Insulating the refrigerant pipes and branch joints
Check for gas leakage before completing (the hose and pipe insulation) and if there is no sign of leakage, make
sure to insulate the pipes and hoses.
Use EPDM material insulator that meets the following conditions.
Test item
Density
Dimensional change rate by heat
Absorption rate
Thermal conduction rate
Moisture transpiration factor
Moisture transpiration grade
Formaldehyde dispersion
Oxygen rate
Selecting the refrigerant pipe insulator
Insulate the gas pipe and liquid pipe by referring to the thickness of insulator for each pipe size.
The standard condition is : temperature at 86 °F(30 °C), humidity less than 85%. If case if the humidity is higher,
you must increase the size by one grade as stated in below table.
Diameter of refrigerant
Pipe
pipe [inch (mm)]
Ø1/4"(6.35)~Ø3/8"(9.52)
Liquid
pipe
Ø1/2"(12.7)~Ø2"(50.80)
Ø1/4"(6.35)
Ø3/8"(9.52)~ Ø1"(25.40)
Ø9/8"(28.58)~
Gas pipe
Ø7/4"(44.45)
Ø2"(50.80)
❋ When installing insulation in places and conditions below, use the same insulation that is used for high
humidity conditions.
<Geological condition>
- High humidity places such as shoreline, hot spring, near lake or river, and ridge (when the part of the building
is covered by earth and sand.)
<Operation purpose condition>
- Restaurant ceiling, sauna, swimming pool etc.
<Building construction condition>
- The ceiling frequently exposed to moisture and cooling is not covered. (e.g. The pipe installed at a corridor of
a dormitory and studio or near an exit that opens and closes frequently. " )
- The place where the pipe is installed is highly humid due to the lack of ventilation system.
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Unit
3 3
lb/ft (g/cm )
%
3 3
lb/ft (g/cm )
W/m·K
2
ng/(m ·s·Pa)
2
g/(m ·24h)
mg/L
%
Insulator (cooling & heating)
General
° °
[86 F (30 C),85%] [86
EPDM, NBR
0.35inch (9mm)
0.51inch (13mm)
0.51inch (13mm)
0.75inch(19mm)
0.98inch (25mm)
Standard
2.997~5.993 (0.048~0.096)
Below -5
Below 0.312 (0.005)
Below 0.037
Below 15
Below 15
There should be none
Over 25
High humidity
° °
F (30 C), over 85%]
0.75inch(19mm)
0.98inch (25mm)
1.26inch (32mm)
1.50inch (38mm)
Remarks
Heating resisting
temperature over
° °
248 F (120 C)