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MULTI ZONE
MULTI ZONE
2. Guideline for each installation process
2.4.3 Essential points of thermal insulation
1) Thermal insulation of refrigerant piping
Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe separately with enough
thickness heat-resistant insulation materials, so that no gap is observed in the joint between indoor unit and
insulating material, and insulating materials themselves. When insulation work is insufficient, there is a possibility
of condensation drip, etc. pay special attention to insulation work to ceiling plenum.
• Do not insulate gas or low pressure pipe and liquid or high
pressure pipe together .
Wrong
A
method
Correct
C
method
B
2) Caution during insulation work
• In case the cables are installed in the conduit, a finishing tape is not required.
• Defect and insufficient insulation can cause condensation drops.
• Binding the insulation too tight may result in dew drops.
• Be sure not to tie wrap the insulation but put special taping or the clamp at the connecting portion.
• The insulation overlapping part at the piping connection must be a distance from the flaring part at the pipe connection.
Liquid pipe
A
B
Gas pipe
Insulation
C
C
C
Liquid pipe
A
B
Gas pipe
A
Insulation
C
• Be sure to fully insulate connecting portion.
A
A
Design and installation _ 21
These parts are not insulated.
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