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7.2
Requirements for the quality of the mains
voltage
For the mains voltage of the single-phase 230 V network, a
tolerance of +10% to -15% must be provided.
For the mains voltage of the three-phase 400 V network, a
tolerance of +10% to -15% must be provided. For the voltage
difference between the individual phases, a tolerance of +-
2% must be provided.
7.3
Requirements for electrical components
Flexible hose lines that are suitable for routing outdoors must
be used for the power supply. The specification must com-
ply with the standard 60245 IEC 57 with the abbreviation
H05RN-F as a minimum.
The electrical partitions must have a contact gap of at least
3 mm.
For the electrical fuse protection, slow-blow fuses with C
characteristics must be used. With a three-phase power sup-
ply, the fuses must be three-pole switching.
To protect people, type B universal-current-sensitive resid-
ual-current circuit breakers must be used if these are stipu-
lated for the installation site.
For the eBUS line, no lines with twisted wire pairs must be
used.
7.4
Electrical partition
The electrical partition is also referred to as a "disconnector"
in these instructions. The fuse or the circuit breaker that is
installed in the building's meter/fuse box is usually used as
the disconnector.
7.5
Installing components for the energy supply
company lockout function
Condition: Energy supply company lockout function provided
The heat generation from the heat pump can be switched off
temporarily by the energy supply company. The unit can be
shut down in two ways:
–
The signal for the shutdown is fed to connection S21 for
the indoor unit.
–
The signal for the shutdown is fed to a partition that is
installed on-site in the meter/fuse box.
▶
Install and wire additional components in the building's
meter/fuse box. To do this, follow the wiring diagram in
the appendix of the installation instructions for the indoor
unit.
0020297937_01 aroTHERM plus Installation and maintenance instructions
Electrical installation 7
7.6
Removing the cover for the electrical
connections
B
T20
A
1.
Note that the cover contains a safety-relevant seal
which must be effective in the case of a leak in the
refrigerant circuit.
2.
Remove the cover, as shown in the figure, without dam-
aging the circumferential seal.
7.7
Stripping the electrical wire
1.
If required, shorten the electrical wire.
≤
30 mm
L
N
PE
≤
40 mm
+
-
≤
30 mm
2.
Strip the electrical wire as shown in the figure. In doing
so, ensure that the insulation on the individual conduct-
ors is not damaged.
3.
To avoid short circuits resulting from loose individual
wires, fit conductor end sleeves on the stripped ends of
the conductors.
123
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