Samsung AM140RNPDKH Series, Installation Manual

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Leak test and insulation
Testing gas leak
f Use the nitrogen gas to test refrigerant gas leak of liquid and gas pipe
connection part.
For detailed information on the leak test, refer to the installation manual of an
outdoor unit.
Leak test part
Insulating the pipe
After carrying out the gas leak test, insulate the refrigerant pipe.
1. Selecting an insulator of the refrigerant pipe
f Insulate both the liquid and gas pipe while considering the thickness of the insulator depending on each pipe size.
f
Indoor temperature 30 °C and humidity below 85 % are the standard condition. If the insulator is used in high humidity
condition, use one grade thicker insulator by referring to the table below.
Pipe Pipe size (mm)
Insulation type [Heating/Cooling(mm)]
Remarks Standard [30 °C, 85 %] High humidity [30 °C, over 85 %]
EPDM, NBR
Liquid pipe
6.35 ~ 9.52 9 t 9 t
Heat resistant
temperature is 120 °C
or more
12.70 ~ 50.80 13 t 13 t
Gas pipe
6.35 13 t 19 t
9.52 ~ 25.40
19 t
25 t
28.58 ~ 44.45 32 t
50.80 25 t 38 t
f
When installing the insulator in places and conditions as below, use the same insulator that is used in high humidity
conditions.
<Geographic condition>
- High humidity places such as near shoreline, hot spring, lake or river, and ridge (when the part of the building is
covered by earth and sand.)
<Operation condition>
- Restaurant ceiling, sauna, swimming pool etc.
<Building construction condition>
- The ceiling which is frequently exposed to moisture, and where cooling is not provided (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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