11. Installation
38
CAUTION
• Must fit tightly against body without any gap.
• Install the insulation not to get wider and use the adhesives on the connection part of it to prevent moisture
from entering.
• Wind the refrigerant pipe with insulation tape if it is exposed to outside sunlight.
• Install the refrigerant pipe respecting that the insulation does not get thinner on the bent part or hanger of pipe.
• Add the additional insulation if the insulation plate gets thinner.
• Must fit tightly against body without any gap.
• All refrigerant connection must be accessible, in order to permit either unit maintenance or removal.
5 Select the insulation of the refrigerant pipe.
• Insulate the gas side and liquid side pipe, noting the insulation thickness that must differ according to the pipe
size.
• Standard: Less than an indoor temperature of 30°C, with humidity at 85%. If installing in a high humidity
environment, use one grade thicker insulator by referring to the table below. If installing in an unfavourable
environment, use thicker one.
• The heat-resistance temperature of the insulator must 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
Ø6.35 to Ø9.52 9t
←
Internal
temperature is
higher than 120°C
Ø12.7 to Ø50.80 13t
←
Gas pipe
Ø6.35 13t 19t
Ø9.52 to Ø25.40
19t
25t
Ø28.58 to Ø44.45 32t
Ø50.80 25t 38t
Wind-Free 1Way Cassette
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