Fujitsu Super High Power Series Design & Technical Manual page 112

Split type
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Do not place the sensor lines and sector supply lines in parallel to avoid causing inadvertent inter-
ference due to voltage points in the sector supply.
Ensure that all electrical cables are housed inside the spaces provided for this purpose.
– Interconnection between the outdoor unit and the hydraulic indoor unit
Comply with the correspondence between the markings on the hydraulic indoor unit's terminals
and those on the outdoor unit when connecting the interconnection cables. A connection error
could cause the destruction of one or other of the units.
– Electric backups
If the heat pump is not installed with a boiler connection, connect the electrical supply for the
backups to the electrical panel.
– Boiler connection
Refer to the instructions supplied with the boiler connection kit and the boiler to be connected.
– Second heating circuit
Refer to the instructions supplied with the second circuit kit or/and regulation extension kit.
– DHW tank with electrical backup heating
Connect the electrical supply for the DHW tank to the electrical panel.
– Contract with the power provider
The heat pump's operation can be controlled to suit special contract (e.g. "Low-tariff", "Day/
Night"). In particular, DHW at nominal temperature will be produced during the off-peak hours
when electricity is cheaper.
• Connect the "Power Provider" contact to input EX2.
• Set the parameter line 1620 to "Low-tariff".
• 230 V on input EX2 = "Peak hours" information activated.
– Power limitation or EJP (peak day removal)
Power limitation is intended to reduce electrical consumption when this is too high compared to
the contract with the power provider.
• Connect the "Power Provider" contact to input EX2.
• Set the parameter line 1620 to "Low-tariff".
• 230 V on input EX2 = "Peak hours" information activated.
– External faults the heat pump
Any component of carry-forward of information (thermostat, pressure switch, etc.) may signal an
external problem and stop the heat pump.
• Connect the external component to input EX3.
• 230 V on input EX3 = Stoppage of heat pump (The system displays error 369.)
• In the case of a heated floor, connect the floor heating safety device into the connector of the
floor heat pump (X12 or X110).
4-2. Electrical connections on the hydraulic indoor unit
- (03-68) -
4. Electrical connections

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