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3.7 Electrical connection
Note: Although the heat pump is electrically isolated from the rest of the swimming
pool system, this only prevents the flow of electrical current to or from the water in the
pool. Earthing is still required for protection against short-circuits inside the unit.
Always provide a good earth connection.
Before connecting the unit, verify that the supply voltage matches the operating voltage of the
heat pump.
It is recommended to connect the heat pump to a circuit with its own fuse or circuit breaker
(slow type; curve D) and to use adequate wiring (see table below).
Connect the electrical wires to the terminal block marked ‘ POWER SUPPLY ’.
A second terminal block marked ‘WATER PUMP ’ is located next to the first one. The filter
pump (max. 5 A / 240 V) can be connected to the second terminal block here. This allows the
filter pump operation to be controlled by the heat pump.
Note: In the case of three-phase models, swapping two phases may cause the electric motors
to run in the reverse direction, which can lead to damage. For this reason, the unit has a
built-in protective device that breaks the circuit if the connection is not correct. If the red LED
above this safety device lights up, you must swap the connections of two of the phase
wires.
Fuse or
circuit
breaker (A)
Wire diameter mm
2
(with max. 15 m length)