Power Circuit And Cable Requirements; General; Examples - Panasonic U-8ME3XPQ Manuel D'installation

R4T........................ Thermistor (coil-deicer)
R5T........................ Thermistor (coil-outlet)
R6T........................ Thermistor (liquid-pipe receiver)
R7T........................ Thermistor (oil)
R81T-82T ............... Thermistor (coil gas)
S1NPH................... Pressure sensor (high)
S1NPL ................... Pressure sensor (low)
S1PH,3PH ............. Pressure switch (high)
T1A ........................ Current sensor (A5P,A6P)
T1R........................ Transformer
V1CP ..................... Safety devices input
V1R........................ Power module (A2P,A3P)
X1M ....................... Terminal strip (Power supply)
X1M ....................... Terminal strip (control)(A1P)
Y1E,2E,3E ............. Expansion valve (electronic type)
Y1S........................ Solenoid valve (hotgas bypass)
Y2S........................ Solenoid valve (out-multi)
Y3S........................ Solenoid valve (receiver gas intake)
Y4S........................ Solenoid valve (receiver gas purge)
Y5S........................ Solenoid valve (gas purge)
Y6S........................ Solenoid valve (liquid pipe)
Y7S........................ Solenoid valve (gas pipe)
Y8S........................ Solenoid valve (4 way valve main)
Y9S........................ Solenoid valve (4 way valve sub)
Z1C-7C .................. Noise filter (ferrite core)
Z1F ........................ Noise filter (with surge absorber)
............. Field wiring
L1,L2,L3................. Live
N ............................ Neutral
......................... Connector
........................... Wire clamp
........................ Protective earth (screw)
BLK........................ Black
BLU........................ Blue
BRN ....................... Brown
GRY ....................... Gray
ORG ...................... Orange
PNK ....................... Pink
RED ....................... Red
WHT ...................... White
YLW ....................... Yellow
NOTE Use copper conductors only.
When using the adaptor for sequential start, refer
to "7.4. Examples" on page 13.
For connection
transmission F1-F2, outdoor-indoor transmission
F1-F2, outdoor-multi transmission Q1-Q2, refer to
"7.4. Examples" on page 13.
For connection wiring to the central remote
controller, refer to the installation manual of the
central remote controller.
Use insulated wire for the power cord.
U-8~16ME3XPQ
Urban Multi air conditioner
4PW16786-1C
wiring to outdoor-outdoor

7.2. 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
Model frequency Voltage
U-8ME3 3N~50 Hz 400 V
U-10ME3 3N~50 Hz 400 V
U-12ME3 3N~50 Hz 400 V
U-14ME3 3N~50 Hz 400 V
U-16ME3 3N~50 Hz 400 V
U-18ME3 3N~50 Hz 400 V
U-20ME3 3N~50 Hz 400 V
U-22ME3 3N~50 Hz 400 V
U-24ME3 3N~50 Hz 400 V
U-26ME3 3N~50 Hz 400 V
U-28ME3 3N~50 Hz 400 V
U-30ME3 3N~50 Hz 400 V
U-32ME3 3N~50 Hz 400 V
U-34ME3 3N~50 Hz 400 V
U-36ME3 3N~50 Hz 400 V
U-38ME3 3N~50 Hz 400 V
U-40ME3 3N~50 Hz 400 V
U-42ME3 3N~50 Hz 400 V
U-44ME3 3N~50 Hz 400 V
U-46ME3 3N~50 Hz 400 V
U-48ME3 3N~50 Hz 400 V
When using residual current operated circuit breakers, be sure to use
a high-speed type 300 mA rated residual operating current.
Be sure to install a main switch for the complete system.
NOTE Select the power supply cable in accordance with
relevant local and national regulations.
Wire size must comply with the applicable local
and national code.
Specifications for local wiring power cord and
branch wiring are in compliance with IEC60245.
WIRE TYPE H05VV(*)
*Only in protected pipes (use H07RN-F when
protected pipes are not used).

7.3. 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.
When connecting several units in Urban Multi 18~48HP
combination, the power supply of each outdoor unit can also be
connected separately. Refer to the field wiring on the
engineering data book for further details.
Make sure to connect the power source wire to the power
source terminal block and to clamp it as shown in figure 14,
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.
• Large imbalance will shorten the life of the smoothing capacitor.
• 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.
Follow the "electrical wiring diagram" when carrying out any
electrical wiring.
Recommended Transmission
fuses line section
2
32 A
0.75~1.25 mm
2
32 A
0.75~1.25 mm
2
32 A
0.75~1.25 mm
2
50 A
0.75~1.25 mm
2
50 A
0.75~1.25 mm
2
63 A
0.75~1.25 mm
2
63 A
0.75~1.25 mm
2
63 A
0.75~1.25 mm
2
80 A
0.75~1.25 mm
2
80 A
0.75~1.25 mm
2
80 A
0.75~1.25 mm
2
100 A
0.75~1.25 mm
2
100 A
0.75~1.25 mm
2
100 A
0.75~1.25 mm
2
100 A
0.75~1.25 mm
2
100 A
0.75~1.25 mm
2
125 A
0.75~1.25 mm
2
125 A
0.75~1.25 mm
2
125 A
0.75~1.25 mm
2
125 A
0.75~1.25 mm
2
125 A
0.75~1.25 mm
Installation manual
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