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control valve according to the outdoor temperature and the
cooling curve.
Refer to the manual's section Site-specific definition /
Cooling for the placement of cooling.
8.13 Cooling control group
The cooling control group includes the cooling control
function for the controller, control valve, actuator,
circulation pump and the flow sensor. The cooling control
group requires site-specific definition, refer to section
Site-specific definition / Cooling.
8.14 Control of additional heat source
Control of additional heat source is an accessory available
for the heat pump's controller. If you would like to utilise
an old or nearly new heat source with the heat pump's
automation, the device must be equipped with the AVS75
extension module. The additional source control enables
the controlled control of temperature according to the
heating curve, which is based on the supply water
measurement. Refer to Site-specific definition / Control of
additional heat source for the placement of an additional
source.
8.15 Control of fixed fuel boiler
Boiler control is an accessory available for the heat
pump's controller. The controller must be equipped with
the AVS75 extension module. Boiler control enables you
the controlled temperature adjustment of an uncontrolled
heat source in the form of the controller. The boiler control
enables the heat produced in a fireplace of wood boiler to
be directed according to the current need for heat. Refer
to Site-specific definition / Control of fixed fuel boiler for
the placement of boiler control.
8.16 Modbus 350 communication module
MODBUS communication module enables the control
and monitoring of the heat pump on a computer on your
local network.
8.17 Energy measurement
Energy measurement is an accessory available for the heat
pump. The energy measurement package must be ordered
in connection with the device order. Meters cannot be
installed to the device later on. The energy measurement
packages have been measured device-specifically. The
packages include an electricity meter and a flow meter.
The controller forms the produced energy measurement
according to the temperature difference and flow.
v2-7 24052017
9 ELECTRICAL
CONNECTIONS
9.1
General
Electrical installations and possible services may only be
carried out under the supervision of an authorised
electrician. The heat pump's power supply is brought
through the opening at the back of the device. The device
is connected to a power grid of 400V (50Hz).
The heat pump's power supply may not be switched on
before the heat pump's heating network has been filled
with water. This may cause the electrical heater, overheat
protector, pumps or compressor to get damaged.
•
The heat pump must be disconnected before
insulation measurement.
•
The heat pump wiring diagram can be found in
Appendix Electrical diagram.
•
If a circuit breaker is used for the heat pump, it
should be of type C
•
Cabling of the heat pump's electrical accessories
should be made through the lead-through of control
centre on the back of the heat pump.
•
The heat pump's internal circulation pumps,
automation and their cabling are protected with
automatic fuses.
23
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Troubleshooting
