INSTALLATION | Preparing to install the appliance
22
www.ochsner.com | 982000-AIR-M2-M4-EN03.1
9.5 Preparing the electrical connections
WARNING: Electrocution
All electrical connection and installation work must
be carried out according to the applicable national
and regional regulations.
WARNING: Electrocution
Before commencing work on electrical connections
and installation, the heat pump system must be
isolated and voltage-free.
WARNING: Electrocution
Work on electrical connections and installation may
be conducted only by qualified contractors.
Material damage
This appliance contains frequency converters (e.g.
EC circulation pumps, EC fan motors). Leakage
currents may arise in normal operation. In the event
of faults, these components may cause DC fault
currents. An incorrectly selected RCD may trip dur-
ing normal operation or, in the event of a fault, may
not trip at all or only trip after a delay.
»
Make sure that the power supply for this
appliance is separate from the domestic in-
stallation.
»
If local conditions require the installation of an
RCD, use type B AC/DC-sensitive RCDs.
i
Information
It is essential that the regulations of the responsible
power supply utility (PSU) and the applicable EN
standards be observed.
i
Information
The values specified in this documentation for
circuit protectors and cable cross-sections are
standard values. The contractor carrying out the
work is responsible for plant-specific sizing of safe
-
ty equipment and cable cross-sections.
►
For the electrical connection, use the system principle
schematic appropriate to your heat pump system from
section „System schematic diagrams“ on page 68.
►
The outdoor unit takes its power supply from the in-
door unit. The supply cable for the fan in the outdoor
unit is protected by an internal C10A circuit breaker in
the indoor unit.
►
In the case of a fault, the protection on the main pow-
er circuit (compressor) and electric booster heater
must break the circuit across all poles.
►
All power supply cables must be protected against
surges and short circuits.
►
For the integral electric booster heater (8.8 kW), a
suitable high limit safety cut-out (HLSC) is installed in
the indoor unit.
i
Information
The main power circuit for the compressor has
no upstream power contactor on the machine
side. Control devices and equipment to discon-
nect and shut down all supply voltages across
all poles, which must be provided on the system
side, must meet the technical safety requirements
of EN 60204-1 sections 5 and 13.4.5, as well as the
international regulations in the IEC 60947 series.
Material damage
Protect the main power circuit (compressor), the
control circuit (control unit) and the electric booster
heater separately from one another.
9.5.1 Heat pumps for three-phase alternating current
11_02_200_202_01_010
C13A
B16A
3 x 400 VAC
1 x 230 VAC 3 x 400 VAC
1
2
3
4
5
6
1 Heat pump indoor unit control box
2 Main system distributor board
3 Supply to main power circuit (compressor)
4 PSU signal contact
5 Supply to control circuit (OTE controller)
6 Supply to electric booster heater
Description
Type
Max.
starting
current
[A]
Max. op-
erating
current
[A]
Fuse
Main power cir-
cuit
(compressor and
fan)
AIR 7 C11A
13.5
5.4
C10A
AIR 11 C11A
20.0
7.9
C10A
AIR 18 C11A
32.0
11.4
C16A
AIR 23 C12A
50.5
16.8
C20A
AIR 29 C12A
49.5
21.1
C25A
AIR 41 C12A
63.5
24.8
C25A
Electric booster
heater
AIR 7 C11A
–
AIR 41 C12A
–
14
B16A
Control circuit
(control unit)
AIR 7 C11A
–
AIR 41 C12A
–
6
C13A
