Samsung AM060MXMDCH Series - Insulating the refrigerant pipes and branch joints; Refrigerant Pipe Insulation Guidelines

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Refrigerant pipe installation
Insulating the refrigerant pipes and branch joints
X
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.
X
Use EPDM material insulator that meets the following conditions.
Test item Unit Standard
Density lb/ft
3
(g/cm
3
) 2.997~5.993 (0.048~0.096)
Dimensional change rate by heat % Below -5
Absorption rate lb/ft
3
(g/cm
3
) Below 0.312 (0.005)
Thermal conduction rate W/m·K Below 0.037
Moisture transpiration factor ng/(m
2
·s·Pa) Below 15
Moisture transpiration grade g/(m
2
·24h) Below 15
Formaldehyde dispersion mg/L There should be none
Oxygen rate % Over 25
Selecting the refrigerant pipe insulator
X
Insulate the gas pipe and liquid pipe by referring to the thickness of insulator for each pipe size.
X
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.
Pipe
Diameter of refrigerant
pipe [inch (mm)]
Insulator (cooling & heating)
Remarks
General
[86
°F (30°C),85%]
High humidity
[86 °F (30°C), over 85%]
EPDM, NBR
Liquid
pipe
Ø1/4"(6.35)~Ø3/8"(9.52) 0.35inch (9mm)
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Heating resisting
temperature over
248
°F (120 °C)
Ø1/2"(12.7)~Ø2"(50.80) 0.51inch (13mm)

Gas pipe
Ø1/4"(6.35) 0.51inch (13mm) 0.75inch(19mm)
Ø3/8"(9.52)~ Ø1"(25.40)
0.75inch(19mm)
0.98inch (25mm)
Ø9/8"(28.58)~
Ø7/4"(44.45)
1.26inch (32mm)
Ø2"(50.80) 0.98inch (25mm) 1.50inch (38mm)
❋
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.