Electrical Connections On The Hydraulic Unit Side - Fujitsu Waterstage WOYG112LCTA Maintenance Document

Air to Water Heat Pump (Split integrated DHW type)
5 .5 Electrical connections
on the hydraulic unit side
Access to the connection terminals:
- Remove the front panel.
- Open the power control box.
- Make the connections in accordance with the diagram
figure 44
Do not place the sensor lines and the power supply
lines in parallel in order to avoid interferences due to
voltage points in the power supply.
Ensure that all the electrical cables are housed in the
spaces provided for this purpose.
figure 41 - Location of electrical cables
at the rear of the hydraulic unit
- 36 -
• Interconnection between the outdoor unit and the
hydraulic unit
Comply with the correspondence between the markings
on the hydraulic 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.
• Electrical back-ups (option)
If the heat pump is not installed with a boiler connection:
- Connect the power supply for the back-ups to the
electrical panel.
• Boiler connection (option)
" If the boiler connection option is used, the
electric boost option must not be connected .
- Please refer to the instructions supplied with the boiler
connection kit.
- Please refer to the instructions supplied with the boiler.
• Second heating circuit
- Please refer to the instructions supplied with the
second circuit kit or/and Regulation extension kit.
• Telephone modem (Not supplied)
- Please refer to the instructions for the extension
controller kit.
• Contract with the power provider
The heat pump's operation can be controlled to
suit special contracts (e.g. off-peak, day/night).
In particular, domestic hot water (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 (1620) to "Off-peak hours".
• 230V on input EX2 = "Peak hours" information
activated (Base setting / Line modification possible
5983, Configuration menu).
• Power shedding 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 limiting device to input EX1, the
back-ups for the heat pump and the DHW stop in the
event of over-consumption by the dwelling.
• 230 V on input EX1 = power limitation in progress
(Base setting / Line modification possible 5981,
Configuration menu) (Operating line 2920).
• External faults the heat pump
- Any component of carryforward of information (Heated
floor thermal safety fuse, 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).
Installation and operating manual "1768 - EN"