Electrical Connections; Machine Connection; Connections Of The Accessories - Ferroli RCA 50 Installation, Maintenance And User Manual

5. Electrical
connections
5.1

Machine connection

5.2

Connections of the accessories

5.1 Machine connection
A Pre-cut for front inlet
B Hole for bottom inlet
The unit is provided with holes for the power cables inlet. There is a pre-cut hole on the structure
and a hole on the base for any input from below.
• Remove the pre-cut.
• Insert the cables from the outside, guiding them towards the electrical board.
Avoid direct contact with non-insulated copper pipes and with the compressor.
It is forbidden to enter the device with electrical cables in positions not specifically required
in this booklet.
To set up the electrical connections:
• Unscrew the fixing screws.
• Remove the external panels.
• Set the main switch to 0.
• Turn the two fixing screws 1/4 of a turn and open the board doors.
• Use the hole for the main power cable and the hole for the cables of other external
connections.
• Make the connections as shown in the wiring diagram.
• Once the electrical connections are completed, secure the cables by using the cable glands,
close the doors of the electrical panel and reassemble the external panels by screwing the
fixing screws.
Before connecting the remote ON-OFF switch, remove the jumper from the relative
clamps.
5.2 Connections of the accessories
5.2.1 Flow switch
The chiller must only operate in the presence of water flow. The flow switch (if not already
present) must be connected as shown in the wiring diagram.
5.2.2 Circulating pump
The circulating pump must always be connected to the control unit as indicated in the wiring
diagram. The pump must be started before the chiller is started and stopped after the chiller is
stopped (recommended minimum delay: 60 seconds).
5.2.3 External consents
If you wish to enable or disable the unit remotely, connect the external consent to the contacts
listed in the wiring diagram.
Avoid placing the control cables in the same duct as the power cables. Always use a
suitable shielded cable.
The connection cables must have a minimum cross section of 1.5 mm².
5.2.4 Connections of the accessories
5.2.4.1 Circulating pump
The circulating pump must always be connected to the control unit as indicated in the wiring
diagram. The pump must be started before the chiller is started and stopped after the chiller is
stopped (recommended minimum delay: 60 seconds).
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