Yds Insulation Work; Insulation Material And Thickness; Refrigerant Pipe Insulation - York R-410A Technical & Service Manual

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6. YDS insulation work

6.1 Insulation material and thickness

6.1.1 Insulation material
Insulation material should adopt the material, which is able to endure the pipe's
temperature: no less than 70
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
6.1.2 Thickness choice for insulation material
Insulation material thickness is as follows:
Refrigerant pipe
Drainage pipe

6.2) Refrigerant pipe insulation

6.2.1 Work Procedure
6.2.1.1 Before laying the pipes, the non-jointing parts and non-connection parts should be heat
insulated.
6.2.1.2 After the gas proof test is eligible, the jointing area, expanding area and the flange area
should be heat insulated
6.2.2 Insulation for non-jointing parts and non-connection parts
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C in the high-pressure side, no less than 120
Pipe diameter (mm)
Φ6.4—Φ25.4
Φ28.6—Φ38.0
Φ38.0—Φ67.0
Inner diameterΦ20—Φ32
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Installation
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C)
Adiabatic material thickness
10mm
15mm
20mm
6mm
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C in the low-
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C)