Ferroli HXA Installation And Operation Manual - page 23
23
CONNECTIONS
Electrical connections
The electrical wirings must be carried out by qualified personnel
according to the regulations in force at the installation time in the
country of installation. Before starting any work on the electrical
circuit make sure that the unit power supply line is disconnected
at the start.
N .B . Refer to the electrical diagram enclosed in the unit.
Power supply system
The power cables of the heat pump power supply line must be
connected to :
- for
single phase power supply : from a single phase voltage
system provided with neutral conductor and separated earth
wire :
V = 230 V ± 10 %
f = 50 Hz
- for
three phase power supply : from a symmetrical three
phase voltage system provided with neutral conductor and
separated earth wire :
V = 400 V ± 10 %
f = 50 Hz
The units are shipped completely factory wired and arranged for
the connection to the power supply.
The power cables must enter the unit through the holes on
the lateral panel and must be connected to the power supply
terminals of the unit.
The integrative electrical heaters (option) must be supplied by
a dedicated power supply line to be connected to the power
supply terminals inside the electrical board of the unit.
Heat pump power supply
The power supply cables must have an adequate section for the
power absorbed by the unit and must be chosen in conformity
with the regulations in force. Design the power supply line,
always referring to the total FLI and FLA values of the unit,
taking into account the selected options (except the integrative
electrical heaters) and the installed accessories.
Integrative electrical heaters power supply
The power supply cables must have an adequate section for the
power absorbed by the only integrative electrical heaters and
must be chosen in conformity with the regulations in force.
It is possible to connect the integrative electrical heaters either
to a single phase power supply or to a three phase power supply
independently from the electrical power supply of the heat pump.
Upstream protection
An automatic switch suitable for ensuring protection against
overcurrents and indirect contacts must be installed upstream
each power supply line.
Coordination between line switch must be carried out observing
the regulations in force on electrical safety, regarding the type of
installation and the installation ambient conditions.
Connections available for the user
The electrical board of the heat pump contains some terminals
dedicated to the connection of temperature probes, humidity
probes, pumps, valves ...
Carry out all the necessary connections in order to realize the
desired plant following the instructions reported in the section
“Inputs and outputs”.
ATTENTION
Carry out all the connections outside the heat pump avoiding the
power cables and the probe cables to be coupled.
Integrative electrical heaters connection
with
single phase power supply
Integrative electrical heaters connection
with
three phase power supply
Integrative
electrical heaters
Integrative
electrical heaters