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Step 9 Insulating the refrigerant pipes
Once you have checked that there are no leaks in the system, you
can insulate the piping and hose.
1
To avoid condensation problems, place Acrylonitrile Butadien
Rubber separately around each refrigerant pipe.
No gap
NBR
NOTE
• Always make the seam of pipes face upwards.
2 Wind insulating tape around the pipes and drain hose avoiding
compressing the insulation too much.
Indoor unit
CAUTION
• Be sure to wrap insulation tightly without any gaps.
3 Finish wrapping insulating tape around the rest of the pipes
leading to the outdoor unit.
4 The pipes and electrical cables connecting the indoor unit with
the outdoor unit must be fixed to the wall with suitable ducts.
Insulation cover pipe
Insulation pipe
Be sure to overlap the insulation.
CAUTION
• Make sure that all refrigerant connection must be accessible
for easy maintenance and detachment.
• 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.
Additional insulation
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 86°F (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 248°F (120°C).
Hanger
Refrigerant
a
pipe insulation
a x 3
English
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