Mitsubishi MXZ-2A52VA Manual de servicio Pagina 87
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87
a
b
Outdoor
unit
Indoor
units
10m
10m
10m
Refrigerant piping length (one way, 2 unit total)
Outdoor unit
precharged
(g)
20m
0
1,150
REFRIGERANT SYSTEM DIAGRAM
9
Stop valve
(with strainer #100)
LEV A
LEV B
Compressor
Defrost
thermistor
RT61
Muffler
4-way valve
Indoor unit
B
Indoor unit
A
Indoor unit
A
Indoor unit
B
Capillary tube
Capillary tube
Strainer
#100
Stop valve
(with strainer #100)
R.V. coil
OFF
ON
Refrigerant flow in cooling
Refrigerant flow in heating
Ambient
temperature
thermistor
RT65
Outdoor heat
exchanger
temperature
thermistor
RT68
FAN-OUT
HEX-OUT
Discharge
temperature
thermistor RT62
Stop valve
(with service port)
Stop valve
(with service port)
Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the
tables below.
UNIT: mm (inch)
Piping length each indoor unit (a, b) 15m
Total piping length (a+b) 20m
Bending point for each unit 15
Total bending point 20
It does not matter which unit is higher.
ADDITIONAL REFRIGERANT CHARGE
UNIT: mm
MXZ-2A30VA
MAX REFRIGERANT PIPING LENGTH
Indoor unit
Extension pipe diameter
class Pipe diameter
22/25
Liquid 6.35(1/4) Liquid 6.35(1/4)
Gas 9.52(3/8) Gas 9.52(3/8)
Outdoor unit union diameter
For
Indoor unit A
Liquid 6.35(1/4)
Gas 9.52(3/8)
Indoor unit B
Liquid 6.35(1/4)
Gas 9.52(3/8)
- SERVICE MANUAL 1
- TECHNICAL CHANGES 2
- Description 6
- 3. Refrigeration oil 7
- 4. Air purge 7
- 5. Additional charge 7
- 2. Refrigerant piping 7
- PART NAMES AND FUNCTIONS 8
- Indoor units 10
- Indoor units combination 11
- INDOOR UNITS COMBINATION4 14
- MXZ-2A40VA 15
- MXZ-2A52VA 16
- MXZ-3A54VA 17
- MXZ-4A71VA 21
- MXZ-5A100VA 39
- SPECIFICATION 61
- Compressor 62
- NOISE CRITERIA CURVES 66
- OUTDOOR UNIT 67
- MICROPHONE 67
- OUTLINES AND DIMENSIONS 68
- REQUIRED SPACE 69
- 1.Installation space 70
- 2.Service space 70
- MXZ-4A71VA 72
- WIRING DIAGRAM 75
- MXZ-3A54VA 76
- REFRIGERANT SYSTEM DIAGRAM 87
- R.V. coil 88
- OFF 88
- ON 88
- Refrigerant flow in cooling 88
- Refrigerant flow in heating 88
- OFF 90
- ON 90
- R.V. coil 91
- MXZ-4A80VA 94
- MAX REFRIGERANT PIPING LENGTH 94
- PERFORMANCE CURVES 97
- , MXZ-2A52VA) 101
- (MPa[Gauge]) 109
- ACTUATOR CONTROL 115
- SERVICE FUNCTIONS 116
- 12-4. AUTO LINE CORRECTING 117
- <MXZ-2A> 117
- <MXZ-4A80VA 118
- , MXZ-5A100VA> 118
- TROUBLESHOOTING 120
- Lighting 126
- MXZ-3A/4A/5A 127
- (MXZ-3A54VA, MXZ-4A71VA)/ 128
- MXZ-3A54VA 129
- MXZ-4A71VA 129
- MXZ-2A30/2A40/2A52 130
- MXZ-3A54/4A71/4A80/5A100 130
- LED3 LED2 131
- LED1 LED2 131
- Check of R.V. coil 132
- Check of LEV 133
- EMERGENCY OPERATION 134
- E4 E5E5 E6 E7 E6 E7E4 E2 135
- Check of outdoor fan motor 136
- Check of HPS 137
- The other cases 137
- Check of bus-bar voltage 137
- 1. Inverter P.C. board 138
- Resistance (kΩ) 139
- Temperature (°C) 139
- MXZ-4A80VA 140
- MXZ-5A100VA 140
- MXZ-5A100VA 142
- 5. Outdoor Power board 143
- 6. Display P.C. board 144
- 7. Interface P.C. board 144
- DISASSEMBLY INSTRUCTIONS 145
- OPERATING PROCEDURE 146
- 1. Removing the compressor 148
- OPERATING PROCEDURE PHOTOS 150
- 14-4. MXZ-4A80VA 154
- 14-5. MXZ-4A80VA 157
- MXZ-2A40VA 160
- MXZ-2A52VA 160
- 15-3. DRAIN SOCKET 163
- Indoor unit connecting 167
- 15-9. ACCESSORY 170
- 3.0 1.4 600 173
- 3.0 2.0 200 173
- Outdoor unit 42 drain hole 175
- Soft vinyl chloride hose of 175
- 25 mm inside diameter 175
- 16-12. ACCESSORY 186
- MXZ-5A100VA 188
- 16-15. ACCESSORY 190
- OPTIONAL PARTS 192
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