Midea MCA-12HRN1, User Manual

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MCAC-UTSM-2008-11 Insulation Work
Installation 133
5. Insulation Work
5.1 Insulation material and thickness
5.1.1. Insulation material
Insulation material should adopt the material which is able to endure the pipe
’
s temperature: no less than
70 in the high
℃
-pressure side, no less than 120 in the low
℃
-pressure side(For the cooling type machine, no
requirements at the low-pressure side.)
u
Example: Heat pump type----Heat-resistant Polyethylene foam (withstand above 120 )
℃
Cooling only type----Polyethylene foam (withstand above 100 )
℃
5.1.2. Thickness choice for insulation material
Insulation material thickness is as follows:
Pipe diameter (mm) Adiabatic material thickness
Refrigerant pipe
Φ
6.4
—Φ
25.4 10mm
Φ
28.6
—Φ
38.1 15mm
Drainage pipe Inner diameter
Φ
20
—Φ
32 6mm
5.2 Refrigerant pipe insulation
5.2.1. Work Procedure
Before laying the pipes, the non
①
-jointing parts and non-connection parts should be heat insulated.
When the gas proof test is eligible, the jointing area,
②
expanding area and the flange area should be heat
insulated
5.2.2. Insulation for non-jointing parts and non-connection parts
wrong right
Gas pipe and liquid pipe should
not be put together to insulate
Insulate the gas pipe
(cooling only)
Insulate the gas pipe and
liquid pipe