Be sure to install the required fuses or circuit
breakers.
For three phase power supply models:
1UH125P1ERK,1UH140P1ERK
Power supply cable: H05RN-F 5G 2.5mm
2
Indoor and outdoor connection cable:
H05RN-F 4G 2.5mm
2
Outdoor unit
terminal blocks
Indoor unit
terminal blocks
Power supply:
380-415V,3N~,
50/60Hz
1 2 3
1 2 3
R S T N
16
When servicing the unit requires the refrigerant system
to be opened, treatment and evacuation of refrigerant
must be done in accordance with applicable legislation.
Refrigerant can not be charged until field wiring has been
completed.
Refrigerant may only be charged after performing the
leak test and vacuum drying.
Before obtaining access to terminal devices, all
supply circuits must be interrupted.
Be sure to install an earth leakage circuit breaker
in accordance with aplicable legislation. Failure to
do so may cause electrical shock.
Use only copper wires.
A main switch or other means for disconnection, having
a contact separation in all poles, must be incorporated
in the fixed wiring in accordance with applicable legislation.
Do not turn on the main switch until all the wiring is
completed.
For Y1
Make sure to connect power supply cables in normal
phase. If connected in reverse phase, the remote controller
of the indoor unit indicates " " and the equipment cannot
operate. Change any two of the three power supply
cables (L1,L2,L3) to correct phase.
If the contact in the magnetic switch should be forcibly
turned on while the equipment is inoperative, the
compressor will burn out. Never try to forcibly turn on
the contact.
Never squeeze bundled cables into a unit.
Fix cables so that cables do not make contact with the
pipes (especially on high pressure side).
Secure the electrical wiring with cable ties as shown in
the figure in
11.2 (for single split) or 12.3 (for maxi split).
Make sure no external pressure is applied to the terminal
connectors.
When installing the earth leakage circuit breaker make
sure that it is compatible with the inverter (resistant to
high frequency electrical noise ) to avoid unnecessary
opening of the earth leakage circuit breaker.
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.
When cables are routed from the unit, a protection sleeve
for the conduits (PG-insertions) can be inserted at the
knock-out hole.
When you do not use a wire conduit, be sure to protect
the wires with vinyl tubes to revent the edge of the knock-
out hole from cutting the wires.
Follow the electric wiring diagram for electrical wiring
works.
Fix the cable with the clip to prevent slide.
Clip
Clip
Outdoor-indoor unit
connection cable
Power supply cable
Secure the cable to the stop valve attachment plate so
that it does not slide.
To persons in charge of electrical wiring work:
Do not oerate the unit until the refrigerant piping is
complete. (Running it before the piping is ready will
break the compressor.)
NOTICE
11.1. Precautions on electrical wiring work
DANGER
CAUTION
Connect and fix the power supply cable, indoor-outdoor
connection cable as following:
Outdoor unit
terminal blocks
Indoor unit
terminal blocks
Power supply:
1PH,220-240V~,
50/60Hz
L N
1 2 3
1 2 3
For single phase power supply models:
1UH071N1ERG,1UH090N1ERG,1UH105N1ERG,
1UH125P1ERG,1UH140P1ERG
Power supply cable
:
H05RN-F 3G 4.0mm
2
Indoor and outdoor connection cable: H05RN-F 4G 2.5mm
2
11.2. Connecting power supply and inter-unit
wiring
Содержание 1UH071N1ERG
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