Ochsner OLWI 9, Operating Instructions & Installation Instructions

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BA_OLW I OTE3_SW5x_EN_20160815_V2 13 / 48
7 Electrical connection
DANGER of electrocution
Install all electrical connections according
to national and local Standards
The regulations of the responsible energy
utility and the relevant EN-standards are to
be strictly adhered to.
Connecting work may only be carried
out by a certified specialist according
to this instruction!
The heat pump connection must have
been approved by the competent utility
before it is carried out.
The stated voltage must be the same as the house
circuit voltage. Observe the rating label!
The circuit breaker for the main power supply circuit is
to be a 4-pole fuse that switches off
all poles in the
event of a malfunction (for currents, see technical data
Pt. 14/). The supply cable must be protected against
overload and short circuiting. The control cable is also
to be protected by means of an all pole circuit breaker
C16A.
The values for the circuit breaker fuses in the Annex
are guideline values only! The correct sizing of the
safety measures is the sole responsibility of the electri-
cian connecting the heat pump.
OCHNSER provides no guarantee in cases of system
damage occurring due to incorrectly sized safety de-
vices!
Fig.16: Power supply to the heat pump
All three-phase drives (compressor,
pumps, fans) MUST be connected to a
CLOCKWISE field of rotation.
7.1 Cable cross sections
Position
min. cross-
section
Connection cable 230V~:
(pumps, valve motors)
Connecting cables are always to
be sized according to on-site
conditions
1.5 mm².
Sensor cables:
(outside sensors, etc.) must al-
ways be run separately (min. 20
cm) from 230V/400V cables.
The maximum cable length must
not exceed 50 m.
1.0 mm².
Bus cables
(e.g. room remote control) bus
cables must always be laid as
sheathed cables. The sheathing is
to be earthed on one end -- > to
the heat pump on PE.
OCHSNER recommends the
following conventional cables:
Y(ST)Y) 2x2x0.8
0.8 mm².
Signal cables:
(5x 1.0mm², 2x 1.0mm²)
The signal cables between the
switching box Airstation and the
OTE control can be run according
to the hydraulic plan, without
sheathing.
1.0 mm².
Table 1: Wiring cross sections
Should the minimum clearances between
sensor wiring and 230V/400V (100mm)
not be able to be adhered to, sheathed
wiring is to be used.
This is to be especially considered for the outside
sensor wiring. OCHSNER accepts no warranty claims
for damage caused by insufficient protection against
electro-emission
7.2 Power supply wiring
The voltage supplies 400V~ and 230V~ are to be run
separately according to the circuit diagram. See also
Fig. 15
•
400V~ for the compressor
•
230V~ control voltage
•
400V~ DAE
•
400V~ optional for auxiliary heater for Le-
gionella treatment (outside unit).