Internal Wiring - Parts Table; Power Circuit And Cable Requirements; General - Panasonic CU-8ME1XPK Installation Manual

Internal wiring - parts table

Refer to the wiring diagram sticker on the unit. The abbreviations
used are listed below:
A1P ................... Printed circuit board
A2P ................... Printed circuit board (INV)
A3P ................... Printed circuit board
A4P ................... Printed circuit board
BS1-5 ................ Push button switch (mode, set, return, wiring check,
reset)
C1R-4R ............. Capacitor
F1S ................... Surge arrester
F2C ................... Over current relay (M2C)
F1U, 2U ............ Fuse (250V,10A) (A1P)
F1U ................... Fuse (250V,10A) (A3P)
F3U, 4U, 5U ...... Fuse (600V, 30A)
H1P-7P ............. Light emitting diode (service monitor - orange) (A1P)
H1P-4P ............. Light emitting diode (service monitor - red) (A2P)
HAP ................... Light emitting diode (service monitor - green) (A1P)
HAP ................... Light emitting diode (service monitor - green) (A2P)
INV .................... Inverter
J1HC, 2HC ....... Crankcase heater
K1M ................... Compressor contactor (M1C)
K2M ................... Compressor contactor (M2C)
K1R, 2R ............ Magnetic relay (A2P)
K1R ................... Magnetic relay (K2M) (A1P)
K1R ................... Magnetic relay (Y5S) (A3P)
K2R, 3R ............ Magnetic relay (M1F) (A1P)
K2R ................... Magnetic relay (Y6S) (A3P)
K3R ................... Magnetic relay (J1HC) (A3P)
K4R ................... Magnetic relay (M2F)
K5R ................... Magnetic relay (Y1R)
K6R ................... Magnetic relay (Y2R)
K7R ................... Magnetic relay (Y1S)
K8R ................... Magnetic relay (Y2S)
K9R ................... Magnetic relay (Y3S)
K10R ................. Magnetic relay (Y4S)
L1R ................... Reactor
M1C, 2C ............ Motor (compressor)
MF1, F2 ............ Motor (fan)
Q1M, 2M ........... Thermal switch (M1F, M2F)
R1-4 .................. Resistor
R1T ................... Thermistor (fin) (A2P)
R1T ................... Thermistor (air) (A1P)
R2-1T, 2T ......... Thermistor (coil)
R3-1T, 2T ......... Thermistor (discharge)
R4-1T, 2T ......... Thermistor (suction)
R5T ................... Thermistor (oil)
R1V ................... Varistor
SENPH ............. Pressure sensor (high)
SENPL .............. Pressure sensor (low)
S1PH, 2PH ....... Pressure switch (high)
T1C ................... DC current transformer
T1R ................... Transformer (220-240V/22V)
X1M ................... Terminal strip
Y1E, 2E ............. Expansion valve (electronic type)
Y1R, 2R ............ 4 way valve
Y1S ................... Solenoid valve (pressure equalizing)
Y2S ................... Solenoid valve (hotgas)
Y3S ................... Solenoid valve (injection M1C)
Y4S ................... Solenoid valve (injection M2C)
Y5S ................... Solenoid valve (discharge gas)
Y6S ................... Solenoid valve (liquid pressure)
Z1F-3F .............. Noise filter
DM .................... Diode module
PC ..................... Power circuit
PM ..................... Power module
PRC .................. Phase reversal detect circuit
SD ..................... Safety devices input
7
Field wiring
L1,L2,L3 Live
N Neutral
Connector
Wire clamp
Protective earth (screw)
Colours BLK : Black
BLU : Blue
BRN : Brown
Note
- Use copper conductors only.
- When using the adaptor for sequential start, refer to chapter
'Examples'.
- For connection wiring to outdoor-outdoor transmission F1-F2,
outdoor-indoor transmission F1-F2, refer to chapter "Examples".
- For connection wiring to the central remote controller, refer to
the installation manual of the central remote controller.

Power circuit and cable requirements

A power circuit (see table below) must be provided for connection
of the unit. This circuit must be protected with the required safety
devices, i.e. a main switch, a slow blow fuse on each phase and an
earth leak detector.
Phase and
Voltage
frequency
CU-8ME1XPK 3N~50Hz 380-415V
CU-10ME1XPK 3N~50Hz 380-415V
Note
- Select the power supply cable in accordance with relevant local
and national regulations.

General

- Up to 3 units can be connected by crossover power source
wiring between outdoor units. However, units of smaller capacity
must be connected downstream. For details, refer to the
equipment design data and technical data.
- Make sure to connect the power source wire to the power
source terminal block and to clamp it as shown in figure 4,
chapter "Field line connection".
- As this unit is equipped with an inverter, installing a phase
advancing capacitor not only will deteriorate power factor
improvement effect, but also may cause capacitor abnormal
heating accident due to high-frequency waves. Therefore, never
install a phase advancing capacitor.
- Keep power imbalance within 2% of the supply rating.
1. Large imbalance will shorten the life of the smoothing
capacitor.
2. As a protective measure, the product will stop operating and
an error indication will be made, when power imbalance
exceeds 4% of the supply rating.
GRY : Gray RED : Red
ORG: Orange WHT: White
PNK : Pink YLW : Yellow
Recommended Transmission
fuses line section
35 A 0.75~1.25mm
35 A 0.75~1.25mm
2
2