R410A 17.5 SEER Inverter Split System Technical Manual
4. Insulation Work
4.1 Insulation material and thickness
4.1.1. Insulation material
Insulation material should adopt the material which is able to endure the pipe’s temperature: no less than
158°F in the high-pressure side, no less than 248°F 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 248°F)
Cooling only type----Polyethylene foam (withstand above 212°F)
4.1.2. Thickness choice for insulation material
Insulation material thickness is as follows:
Pipe diameter (in)
Adiabatic material thickness
Refrigerant pipe
0.25—1
0.39in
1.13—1.5
0.59in
Drainage pipe
Inner diameter 0.79—1.26
0.24in
4.2 Refrigerant pipe insulation
4.2.1. 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.
4.2.2. 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
Summary of Contents for ACTH2418VG1-D
Page 1: ...R410A Inverter Split System 17 5 SEER Technical Manual January 2021 Version A TM 18SS 01...
Page 4: ...R410A 17 5 SEER Inverter Split System Technical Manual 1 Nomenclature 1 1 Indoor unit...
Page 5: ...R410A 17 5 SEER Inverter Split System Technical Manual 1 2 Outdoor unit...
Page 22: ...R410A 17 5 SEER Inverter Split System Technical Manual 4 Service Space...
