Secure the electrical wiring with cable ties as shown
in the figure in 10.2 .
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 ofthe 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.
CAUTION
Be sure to install the required fuses or circuit
breakers.
10.2. Connecting power supply and inter-
unit wiring
Connect and fix the power supply cable, indoor-
outdoor connection cable as following:
Power supply:
380-415V,3N~,
50/60Hz
For three phase power supply models:1U125S2SN1FB,
1U140S2SP1FB,
Power supply cable:
For 1U125S2SN1FB/1U140S2SP1FB H05RN-F 5G
2
2.5mm
,
Indoor and outdoor connection cable:
2
H05RN-F 4G 2.5mm
£n-
unit connection cable length L satisfied condition
40m< L<55m, please change the connection cables
specification to H07RN-F 4G 4.0mm
and outdoor unit connection cable length L satisfied
condition 55m1 L1 75m, please change the connection
cables specification to H07RN-F 4G 6.0mm
Outdoor unit
terminal blocks
Indoor unit
terminal blocks
1
Note
Ifthe indoor and outdoor
£"
2
. If the indoor
2
£'
Power supply:
1PH,220-240V~,
50/60Hz
For single phase power supply models:
1U105S2SS1FA,
Power supply cable: H05RN-F 3G 4.0mm
1U125S2SN1FA,1U140S2SP1FA
Power supply cable: H05RN-F 3G 6.0mm
Indoor and outdoor connection cable: H05RN-F 4G 2.5mm
1
£n-
Note£" If the indoor and outdoor
unt connection cable length L satisfied condition
40m< L<55m, please change the connection cables
specification to H07RN-F 4G 4.0mm
and outdoor unit connection cable length L satisfied
condition 55m, L, 75m, please change the connection
cables specification to H07RN-F 4G 6.0mm
Fix the cable with the clip to prevent slide.
Clip
Outdoor-indoor unit
connection cable
Secure the cable to the stop valve attachment plate
so that it does not slide.
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.
20
Outdoor unit
terminal blocks
1U105S2SS1FA
1U125S2SN1FA
1U140S2SP1FA
Indoor unit
terminal blocks
2
2
2
. If the indoor
2
£'
Clip
Power supply cable
2