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[
I
Read Before Servicing ]
4. Thickness and refrigerant type indicated on the piping materials
Ask the pipe manufacturer for the symbols indicated on the piping material for new refrigerant.
5. Flare processing (O-material (Annealed) only)
The flare processing dimensions for the pipes that are used in the R410A system are larger than those in the R22 system.
If a clutch-type flare tool is used to flare the pipes in the system using R410A, the length of the pipes must be between 1.0
and 1.5 mm. For margin adjustment, a copper pipe gauge is necessary.
6. Flare nut
Type-2 flare nuts instead of type-1 are used to increase the strength. The size of some of the flare nuts have also been
changed.
The figures in the radial thickness column are based on the Japanese standards and provided only as a reference. Use
pipes that meet the local standards.
Flare processing dimensions (mm[in])
Pipe size (mm[in])
A dimension (mm[in])
R410A
R22
ø6.35
[1/4"]
9.1
[0.358]
9.0
[0.354]
ø9.52
[3/8"]
13.2
[0.520]
13.0
[0.512]
ø12.7
[1/2"]
16.6
[0.654]
16.2
[0.638]
ø15.88
[5/8"]
19.7
[0.776]
19.4
[0.764]
ø19.05
[3/4"]
24.0
[0.945]
23.3
[0.917]
Flare nut dimensions (mm[in])
Pipe size (mm[in])
B dimension (mm[in])
R410A
R22
ø6.35
[1/4"]
17.0
[0.669]
17.0
[0.669]
ø9.52
[3/8"]
22.0
[0.866]
22.0
[0.866]
ø12.7
[1/2"]
26.0
[1.024]
24.0
[0.945]
ø15.88
[5/8"]
29.0
[1.142]
27.0
[1.063]
ø19.05
[3/4"]
36.0
[1.417]
36.0
[1.417]
Dimension A
Dimension B
Содержание City Multi CMB-P1016NU-G
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Страница 86: ... 77 III Heat Source Unit BC Controller Components 2 RELAY BOARD RELAY 4 board 3 RELAY BOARD RELAY 10 board ...
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Страница 112: ... 103 VI Refrigerant Circuit 1 Refrigerant Circuit Diagram 105 2 Principal Parts and Functions 109 ...
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Страница 117: ... 108 VI Refrigerant Circuit 3 CMB P104 and P108NU GB sub TH25 TH22 LEV3a CP Solenoid valves Block Check valves Block ...
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Страница 312: ... 303 X LED Monitor Display on the Heat Source Unit Board 1 How to Read the LED on the Service Monitor 305 ...
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