AEX3M18JR
4 – 1
AEX3M18JR
Service Manual
CHAPTER 4.
REFRIGERATION CYCLE
[1] REFRIGERATION SYCLE
Refrigeration Cycle
Flow of Refrigerant
1. Cycle temperature and pressure in stop valve
Running unit
No
Operation Mode
Cool (MAX)
Cool (Test run)
Heat (MAX)
Heat (Test run)
AY-XPM7FR &
AY-XPM7FR &
AY-XPM7FR
(3 units)
(1)
86
70
78
50
(2)
45
41
-1
2
(3)
12
15
35
27
(4)
15
19
0
3
Stop valve pressure (gas side)
1.04MPa(abs)
1.21MPa(abs)
2.53MPa(abs)
1.97MPa(abs)
Frequency
100Hz
70Hz
120Hz
50Hz
AY-XPM12FR
(1 unit)
(1)
80
67
89
59
(2)
38
37
1
3
(3)
10
13
42
25
(4)
11
17
2
6
Stop valve pressure Frequency
0.88MPa (abs)
1.10MPa (abs)
3.52MPa (abs)
2.38MPa (abs)
Frequency
70Hz
40Hz
90Hz
40Hz
Heat
exchanger
Heat exchanger
Heat exchanger
UNIT C
UNIT B
UNIT A
STOP valve (Liquid)
Compressor
4-way
valve
Accumulator
STOP valve (Gas)
Expansion valve C
Expansion valve B
Expansion valve A
(1)
(4)
(2)
(3)
(3)
(3)
Heat exchanger
INDOOR UNIT
OUTDOOR UNIT
INDOOR UNIT
OUTDOOR UNIT
UNIT C
UNIT B
UNIT A
Cooling
heating
Содержание AE-X3M18JR
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