Table of Contents
Advertisement
4.2 Guidelines
Position
Connecting cables 230VAC
are always to be sized ac-
cording to on-site condi-
tions
Control cable 230VAC
Pumps, valve motors
Sensor cables:
(outside sensors, etc.) are
sensitive to EMC and must
always be run separately
(min.
20
cm)
230V/400V cables. If sepa-
ration
is
not
possible,
sheathed cables are to be
used. The sheath connec-
tion to the heat pump is on
Terminal PE
max. cable length 50 m!
Bus cables
eBus from OTE control to
room remote control,
auxiliary modules, between
units (when cascading).
These cables must always
be laid as sheathed cables.
The sheath connection to
the heat pump is on Termi-
nal PE OCHSNER recom-
mends the following con-
ventional cables:
Y(ST)Y)
2x2x0.8
ATTENTION: always use a
twisted two-wire cable!
Example.
eBUS
SIGNAL/GND
Do not connect GND to the
sheath!
Table 1:
BA OCHSNER AQUA TERRA_EN_V01.1.docx
min.
cross-
section
1.5 mm².
min. 1.0 mm²
from
2x 1.0 mm²
2x2x0,8 mm²
=
Cable selection
4.3 Details of power supply
The voltage supplies 400V~ and 230V~ are to be
run separately according to the circuit diagram.
The following power supplies are necessary:
Fig. 4:
400VAC for the compressor
Utility (EVU) Signal contact *
230V control voltage (inside switching box)
The power supply 230VAC to the control is on the
terminal strip X3 in the distribution box on the
switching box (L N PE).
Should the minimum clearances be-
tween sensor wiring and 230V/400V
(100mm) not be able to be adhered to,
sheathed wiring is to be used.
The values indicated for fuse protection are given
solely for reference. The correct sizing of the
safety measures is the sole responsibility of the
electrician connecting the heat pump.
OCHNSER provides no guarantee in cases of sys-
tem damage occurring due to incorrectly sized
safety devices!
4.4 Smart Grid
Special descriptions for the Smart Grid are availa-
ble on request.
*EVU (Utility)
Power supply
Page
of
8
72
Advertisement
Table of Contents
