Sakata SIB-100BAY, Service Manual

Page: 115 / 118

Light Commercial R410A on-off
S13-01.01.13en
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
Ԩ
in the high-pressure side, no less than 120
Ԩ
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
Ԩ
)
Cooling only type----Polyethylene foam (withstand above 100
Ԩ
)
5.1.2. Thickness choice for insulation material
Insulation material thickness is as follows:
5.2 Refrigerant pipe insulation
5.2.1. 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
5.2.2. Insulation for non-jointing parts and non-connection parts
For construction convenience, before laying pipes, use insulation material to insulate the pipes to be deal
with, at the same time, at two ends of the pipe, remain some length not to be insulated, in order to be welded
and check the leakage after laying the pipes.
5.2.3. Insulate for the jointing area, expanding area and the flange area
①
Insulate for the jointing area, expanding area and the flange area should be done after checking leakage
of the pipes
②
Make sure there
’s no clearance in the joining part of the accessorial insulation material and local
preparative insulation material.
Installation
115
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
Pipe diameter (mm) Adiabatic material thickness
Refrigerant pipe
Φ6.4—Φ25.4
10mm
Φ28.6—Φ38.1
15mm
Drainage pipe Inner diamet
erΦ20—Φ32
6mm