Electrical Connections; Characteristic Of The Electrical Supply; General Remarks On Electrical Connections - Fujitsu AOYA18LALL Installation And Operating Manual

Heat pump air/water split single service
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Heat pump, Split, single service

Electrical connections

Ensure that the general electrical power supply has
been cut off before starting any repair work.

Characteristic of the electrical supply

The electrical installation must be conducted in
accordance with the prevailing regulations.
The electrical connections must only be made when
all the other fitting operations have been completed
(fixing, assembly, etc.).
The contract concluded with the energy provider
must be sufficient not only to cover the heat pump's
power but also the combined sum of all the
appliances likely to be operating at the same time.
When the voltage is too low, check with your energy
provider the value subscribed to in your contract.
Never use a socket for the power supply.
The heat pump must be supplied with power by
special protected leads from the electric panel via
2-pole circuit breakers specially dedicated to the
heat pump:
Curve D for the outside unit, curve C for the electric
heating and domestic water back-ups (see tables on
page 25).
The electrical installation must necessarily be
equipped with a 30mA differential protection.
Use a flexible cable of H07 RN-F type.
This appliance is intended to operate under a
nominal voltage of 230V +/- 10%, 50 Hz.
General remarks on electrical
Tighten the screws on the terminal blocks perfectly.
Unsufficient tightening can cause overheating,
leading to breakdown or even a fire.
Use cable clamps to prevent the conductors from
being disconnected accidentally.
Connection to Earth and Earth bonding continuity
are essential.
Connecting to screw terminals
Rigid wires (A, fig. 28).
Rigid w ires are a lways preferable for fixed
installations, particularly in a building.
- Always select a wire that complies with the
prevailing standards.
- Strip away around 25 mm from the end of the wire.
- With round end pliers, form a loop with a diameter
corresponding to the tightening screws on the
- Tighten the terminal screw firmly onto the loop
Flexible wires (B, fig. 28)
H07RNF type flexible wire can be used with certain
- Strip away around 10mm from the end of the wire.
- With tightening pliers, fit a round tag with a diameter
corresponding to the terminal screw's diameter on
the end of the wire.
A : Rigid wires
25 mm
Special screw and
Figure 28 - Outside unit terminal block
Figure 29 - Regulation connector
Figure 30 - Hydraulic module terminal block
- Tighten the tag firmly onto the terminal with a
- We strongly advise against using flexible wires
without round tags.
- Always protect the cables when passing them
through cable clamps with PVC protective conduit
0.5 to 1mm thick.
Connecting to regulation cards
- Remove the corresponding connector and make
the connection.
Connecting to spring terminals (fig. 30)
Rigid wires
- Strip away around 10mm from the end of the wire.
- Slide the wire into the opening provided for this
- Push the spring with a screwdriver so that the wire
enters the cage.
- Remove the screwdriver and then check that the
wire is jammed in the cage by pulling on it.
Flexible wires
- Use the ends and proceed as before.
Installation and operating manual "1350-EN"
B : Flexible wires
Round terminal tightened
10 mm

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