Pipe Insulation - Samsung KXWD Series Installation Manual

Pipe insulation

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 30 °C (86 °F), humidity less than 85%. If case if the humidity is higher, you must
increase the size by 1 grade as stated in below table.
Outer diameter
Pipe
mm
6.35~9.52
Liquid pipe
12.7~50.8
6.35
9.52~25.4
Gas pipe
28.58~44.45
50.8
❋ 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.
Unit
g/cm
g/cm
W/m·K
ng/(m
g/(m
mg/L
Insulator (Cooling, Heating)
General
[ 30 °C (86 °F), 85% ]
inch mm
1/4~3/8 9
1/2~2 13
1/4 13
3/8~1 19
1 1/8~1 3/4 19
2 25
ENGLISH-76
3
%
3
2 ·s·Pa)
2
·24h)
There should be none
%
High humidity
[ 30 °C (86 °F), over 85% ]
EPDM, NBR
inch mm inch
3/8 9
1/2 13
1/2 19
3/4 25
3/4 32 1 1/4
1 38 1 1/2
Standard
0.048~0.096
Below -5
Below 0.005
Below 0.037
Below 15
Below 15
Over 25
Remarks
3/8
1/2
Heating resisting
3/4
temperature over
1
120 °C (248 °F)