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8 - ELECTRICAL CONNECTION
These latches of stainless steel have triangular
insert 8 mm (supplied wrench). The closing is done
by rotating 90º (anti-clockwise): it brings the latch to
the locked position.
Dual locks can function as hinges or can be used
to remove the door. Check that the locks are not
blocked. Open them with a 4 mm Allen wrench (in
an anti-clockwise direction).
The fan for cooling the
e l e c t r i c a l c a b i n e t , t h e
graphic terminal and the
g r o u n d c o n n e c t o r, a l l
located on the door, must
be disconnected before
removing the door.
Electrical components are
identifi ed and all wires are
numbered. It permits easy
tracing and diagnostics.
Power cables are identifi ed
with the colors: black (L1)
- Brown (L2) - grey (L3) -
yellow/green (Ground).
PE
The grounding lug (PE), located on the panel plate, is
used to earth the frame of the unit.
The main components of the unit are connected in intermediate
boxes located next to these components.
● BOX1: Motor-compressor circuit 1
● BOX2: Motor-compressor circuit 2 (models 052 to 099)
● BOX3: Mixing box
● BOX4: Indoor unit
● BOX5: Rotary heat exchanger (optional). In this case the box
is located in the wheel module.
● BOX6: Return box (optional)
● BOX7: Electrical heaters (optional)
● BOX8: Hot water coil or heat recovery coil or gas burner or gas
boiler (optionals)
The following image shows the location of boxes in a two-circuit
unit with "Standard" assembly:
C1
Vext1
BOX1
C2
CE
C3
BOX2
Vext2
C4
30
BOX6
BOX3
BOX8
BOX7
BOX4
Vint1
Vint2
8.5 - "50FC" electronic control
"50FC" electronic control is basically comprised of a control board,
sensors, a graphic terminal, an user terminal (optional), a touch
panel (optional) and a BMS card (optional).
Graphic
terminal
By default, this control is supplied with a graphic terminal,
installed on the unit's electrical cabinet, but it can also be remotely
connected:
■ Up to 50 metres, it can be connected directly with telephone wire.
■ From 50 to 200 metres, it is necessary to use the TCONN bypass
cards and AWG 20/22 shielded cable with 2 twisted pairs.
The user terminal (optional) or the touch panel (optional) can
be installed in the electrical cabinet when the graphic terminal is
remotely connected.
Note: Refer to the "50FC" control brochure to obtain more detailed
information on its operation.
Customer connection
No.
50FF/FC
1
Main power supply 400 III (±10%)
Remote connection of graphic
2
terminal (by default installed on the
electrical cabinet) (1)
Connection of user terminal
3
(optional) (2)
4
Remote off /on (optional)
5
General fault signal (opt.) (3)
Remote Cooling/Heating (optional
6
upon request)
Circulation pump signal for HWC
7
(antifreeze safety) (optional)
NTC
8
Ambient sensor
RS485
9
CO2 sensor (optional)
(1) In this case, it´s possible to install the user terminal on the electrical
cabinet.
(2) The power supply of the electrical cabinet (230 V) must be used for
terminal power.
(3) The output for general alarm signal is not compatible with the following
options: hot water coil, heat recovery coil, gas boiler, rotary heat exchanger
and on/off signal for external humidifi er. With these options, possibility
of general alarm upon request.
(4) Up to four RS485 ambient sensors can be connected in series on the
fi eld-bus of the control board.
User
Touch
terminal
panel
1
2
3
4
5
6
7
8
9
020 to 099
3 Wires + Ground + Neutral
Telephone cable 6 wires
standard (RJ12 connector)
2 wires for power supply
230V + 1 shielded cable
for communication type
AGW20 / 22 (1 braided pair
+ drainwire + shielding)
2 wires
2 wires
2 wires
1 wire
2 wires
5 wires (4)
3 wires
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