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ENGLISH
5
Select the insulation of the refrigerant pipe.
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Insulate the gas side and liquid side pipe referring to the thickness according to the pipe size.
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Indoor temperature of 30 °C and humidity of 85 % is the standard condition.
If installing in a high humidity condition, use one grade thicker insulator by referring to the table below.
If installing in an unfavorable conditions, use thicker one.
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Insulator’s heat-resistance temperature should be more than 120 °C.
Pipe
Pipe size
Insulation Type (Heating/Cooling)
Remarks
Standard [30 °C, 85 %]
High humidity [30 °C, over 85 %]
EPDM, NBR
Liquid pipe
Ø 6.35 ~ Ø 9.52
9 t
9 t
Internal temperature
is higher than 120 °C
Ø 12.7 ~ Ø 19.05
13 t
13 t
Gas pipe
Ø 6.35
13 t
19 t
Ø 9.52
19 t
25 t
Ø 12.70
Ø 15.88
Ø 19.05
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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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Install the insulation not to get wider and use the adhesives on the connection part of it to prevent moisture from
entering.
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Wind the refrigerant pipe with insulation tape if it is exposed to outside sunlight.
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Install the refrigerant pipe respecting that the insulation does not get thinner on the bent part or hanger of pipe.
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Add the additional insulation if the insulation plate gets thinner.
Additional insulation
Hanger
Insulated refrigerant pipe
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3
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CAUTION
