Insulation Work - ComfortStar BAR4 Service Manual

4 . In su la tio n W o rk
4.1 In su latio n m aterial an d th ickn ess
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.)
 Example: Heat pump type----Heat-resistant Polyethylene foam (withstand above 120℃)
Cooling only type----Polyethylene foam (withstand above 100℃)
2. Thickness choice for insulation material
Insulation material thickness is as follows:
Refrigerant pipe
Drainage pipe
4.2 R efrig era n t p ip e in su latio n
1. Work Procedure
① Before laying the pipes, the non-jointing parts and non-connection parts should be heat insulated.
② When the gas proof test is eligible, the jointing area, expanding area and the flange area should be heat
insulated.
2. Insulation for non-jointing parts and non-connection parts
wrong
Gas pipe and liquid pipe should
not be put together to insulate
Pipe diameter (mm)
Φ6.4—Φ25.4
Φ28.6—Φ38.1
Inner diameterΦ20—Φ32
Insulate the gas pipe
(cooling only)
Installation
Adiabatic material thickness
right
Insulate the gas pipe and
5
10mm
15mm
6mm
liquid pipe