MCAC-UTSM-201503 R410A Full DC Inverter Split Duct Type Technical Manual
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C and D is connecting pipes interface of indoor and outdoor units
3.6 Heat Insulation
Do the heat insulation to the pipes of air side and liquid side separately. The temperature of the pipes of
air side and liquid side when cooling, for avoiding condensation please do the heat insulation fully.
The air side pipe should use closed cell foamed insulation material, which the fire-retardant is B1
grade and the heat resistance over 120°C.
When the external diameter of copper pipe≤Φ12.7mm, the thickness of the insulating layer at least
more than 15mm;
When the external diameter of copper pipe≥Φ15.9mm, the thickness of the insulating layer at least
more than 20mm.
Please use attached heat-insulating materials do the heat insulation without clearance for the
connecting parts of the indoor unit pipes.
4. Connection of Refrigerant Pipe
4.1 Size of outdoor unit pipes and piping methods
Check point of outdoor unit
Check point of indoor unit
D
C
A
B
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