17
Connecting to the power supply
Check that cables and printed circuit boards are intact. High and low
current cables should be routed separately in order to avoid interference
on the sensors.
Install outdoor sensor T2, standard enclosure (see Terminal diagram
Optima -290 A/W) and relevant accessories.
Accessories
Room sensor T5
The room sensor is placed centrally in the house and is connected
according to External connections 290 A/W.
Softstarter
The compressor can be equipped with a softstarter to reduce the inrush
current. The soft starter is fi tted on the heat pump and is connected as in
the Wiring diagram Optima.
Heating cable
A drainage pipe from the heat pump’s drip collector may need to be fi tted
with a heating cable. See Accessories under What the shipment includes for
information about lengths. The heating cable is connected according to
External connections Optima.
Options
Power guard
The installation can be supplied with a power guard. The task of the power
guard is to temporarily disconnect the electric additional heat when using
other power demanding appliances so that the main fuse does not blow.
The power guard is connected according to its connection instructions.
Connecting to the power supply
Warning
Handle the circuit boards with great
care. They are sensitive to ESD (Elec-
trostatic discharge), which can cause
faults in electronic components.
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