Mitsubishi MXZ-2A52VA Service Manual Page 93
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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93
a
b
c
d
Outdoor
unit
Indoor
units
15m
10m
15m
Refrigerant piping length (one way, 4 unit total)
Calculation : Xg = 20 g/m x (Refrigerant piping length (m) - 40)
Outdoor unit
precharged
(g)
50m
200
40m
0
2,700
60m
400
Indoor unit
D
Power
receiver
LEV A
LEV B
LEV C
LEV D
Oil separator
Compressor
Muffler
4-way valve
LEV E
Indoor unit
C
Indoor unit
B
Indoor unit
A
Indoor unit
A
Indoor unit
B
Indoor unit
C
Indoor unit
D
Capillary tube
Capillary tube
Discharge
temperature
thermistor RT62
Strainer
#100
Strainer
#100
Strainer
#100
Strainer
#100
Strainer
#100
R.V. coil
OFF
ON
Refrigerant flow in cooling
Refrigerant flow in heating
Distributor
HEX-OUT
Outdoor heat
exchanger
temperature
thermistor
RT68
Defrost
thermistor
RT61
Capillary tube
Ambient
temperature
thermistor
RT65
FAN-OUT
Strainer
#100
Stop valve with
service port
Stop valve
UNIT: mm
Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the
tables below.
When diameter of refrigerant pipe is different from that of outdoor unit union, use optional Different-diameter pipe.
For further information on Different-diameter pipe, see 17-1.
UNIT: mm (inch)
Piping length each indoor unit (a, b, c, d) 25m
Total piping length (a+b+c+d) 60m
Bending point for each unit 25
Total bending point 60
It does not matter which unit is higher.
ADDITIONAL REFRIGERANT CHARGE
MXZ-4A71VA -
E5
,
E6
,
E7
MAX REFRIGERANT PIPING LENGTH
Indoor unit
Extension pipe diameter
class Pipe diameter
22/25/35/42
Liquid 6.35(1/4) Liquid 6.35(1/4)
Gas 9.52(3/8) Gas 9.52(3/8)
50
Liquid 6.35(1/4) Liquid 6.35(1/4)
Gas 12.7(1/2) Gas 12.7(1/2)
60
Liquid 6.35(1/4) Liquid 6.35(1/4)
Gas 15.88(5/8) Gas 15.88(5/8)
Outdoor unit union diameter
For
Indoor unit A
Liquid 6.35(1/4)
Gas 12.7(1/2)
Indoor unit B
Liquid 6.35(1/4)
Gas 9.52(3/8)
Indoor unit C
Liquid 6.35(1/4)
Gas 9.52(3/8)
Indoor unit D
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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