Mitsubishi Electric ECOV-X37VA Manuel D'installation page 18

4-2. Specifications of general commercial parts
4-2-1. Refrigerant pipes
[1] Piping materials/Wall thickness
The design pressures of the liquid line and suction line are as shown in the table below.
Liquid line (Unit outlet)
8.0 MPa
The thickness of pipes to be used depends on the type of refrigerant used, pipe diameter, and pipe material.
Use pipes with appropriate thickness for a given application.
The pipe sizes for the liquid line (unit outlet) and suction line (unit inlet) are as shown in the table below.
Liquid line (Unit outlet)
ø9.52 (3/8)
[2] Copper pipe bending
Make sure that no wrinkles form when bending copper pipes. Such wrinkles may reduce the pipe thickness and/or increase
the resistance to refrigerant flow.
[3] Brazing material
In a corrosive atmosphere, such as where there is a high sulfurous acid gas concentration, use silver filler.
Do not use low-temperature fillers as they do not have sufficient strength.
[4] Flux
Select the flux according to the type and shape of substrate, filler type, and brazing method.
[5] Insulation
Refer to the relevant pages for details about heat insulation. (Page 39)
[6] Electrical wiring
For more information on transmission lines (MODBUS
Refer to the relevant pages for more information on the power line, grounding wire, and control wire (220-240 V). (Page 42)
[7] Dryer
Refer to the relevant page for details about the dryer. (Page 27)
[8] Sight glass
Refer to the relevant page for details about the sight glass. (Page 27)
WT09614X03_GB
Do not reuse the existing pipes!
Suction line (Unit inlet)
8.0 MPa
mm (in.)
Suction line (Unit inlet)
ø15.88 (5/8)
®
Hot gas routing line
12.0 MPa
®
), refer to the MODBUS Interface Manual.
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