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7 Commissioning
Frequency (Hz)
Voltage (V)
Voltage tolerance (%)
Wire size (cross section mm²)
Earth leakage circuit breaker
6‒2 Field wiring specifications
Maximum operating current (A)
Maximum operating current (A) with valvesFN
Recommended overcurrent fuse (A)
Phase
Frequency (Hz)
Voltage (V)
Voltage tolerance (%)
Wire size (cross section mm²)
Earth leakage circuit breaker
6.2
Connecting the electrical wiring
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
Use an all-pole disconnection type breaker with at least
3 mm between the contact point gaps that provides full
disconnection under overvoltage category III.
WARNING
If the supply cord is damaged, it MUST be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
NOTICE
Precautions when laying power wiring:
▪ Do NOT connect wiring of different thicknesses to the
power terminal block (slack in the power wiring may
cause abnormal heat).
▪ When connecting wiring which is the same thickness,
do as shown in the figure above.
▪ For wiring, use the designated power wire and connect
firmly, then secure to prevent outside pressure being
exerted on the terminal board.
▪ Use an appropriate screwdriver for tightening the
terminal screws. A screwdriver with a small head will
damage the head and make proper tightening
impossible.
▪ Over-tightening the terminal screws may break them.
Installation and operation manual
14
2 Pipe
04
05
06
08
10
50
220~240
±10
0.75~1.25
Must comply with applicable legistation
4 Pipe
04
05
06
08
10
0.26 0.26 0.37 0.43 0,50 0.56 0.79 0.87 0.83 1.04
0.33 0.33 0.44 0.50 0.57 0.63 0.86 0.94 0.90 1.11
5
1
50
220~240
±10
0.75~1.25
Must comply with applicable legistation
NOTICE
▪ Follow the wiring diagram (delivered with the unit,
located at the inside of the service cover).
▪ For instructions on how to connect the optional
equipment, see the installation manual delivered with
the optional equipment.
▪ Make sure the electrical wiring does NOT obstruct
proper reattachment of the service cover.
It is important to keep the power supply and the transmission wiring
separated from each other. In order to avoid any electrical
interference the distance between both wirings should ALWAYS be
at least 50 mm.
NOTICE
Be sure to keep the power line and transmission line apart
from each other. Transmission wiring and power supply
wiring may cross, but may NOT run parallel.
7
Commissioning
NOTICE
Do NOT interrupt the test run.
7.1
Checklist before commissioning
1 After the installation of the unit, check the items listed below.
2 Close the unit.
3 Power up the unit.
You read the complete installation instructions, as
described in the installer reference guide.
The indoor units are properly mounted.
There are NO missing phases or reversed phases.
The system is properly earthed and the earth terminals
are tightened.
12
14
16
20
24
12
14
16
20
24
3P756931-1 – 2023.11
FWE-F
Fan coil units
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