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English
General Description
7.8 Electric power supply and
control
system
The control compartment contains and electronic
card with keyboard and a display for working para-
meters, alarms, if any, and operating blocks.
It is complete with remote control switches and pro-
tection fuses for the motors of compressors, fans and
pumps.
7.9 Accessories
List of available accessories, provided separately, to
be mounted on site by the installer:
Water flow switch
Prevents the operation of the unit when the chilled
fluid is insufficient. It is advisable to install a flow
switch, to ensure the correct operation of the unit.
Water filter
Filter to be mounted on the suction side of the water
heat exchanger.
Antivibrating supports (AVM)
Isolating spring supports, equipped with bolts for
fastening to the base. They are supplied separated
from the unit and must be mounted on site by the cu-
stomer, at his own expense.
Fan speed regulator
The speed regulator of the fans is mounted as a stan-
dard accessory for the Extra Low Noise units, and
is an optional accessory for the Standard and Low
Noise units. The fan speed is controlled in order to
work at a low room temperature, and allows the unit
to work down to a room temperature of –18°C.
The control can be of the pressostatic step type, with
temperature correction, or of continuous type (under
pressure), with electronic regulator. The regulator is
of electronic type only for the Extra Low Noise ver-
sions.
Wire-type remote control kit
The kit includes a remote control for wall mounting,
complete with 3m-long connecting cable, and instal-
lation manual and a transformer.
For longer distances (i.e. up to 50m) you can use a
multipolar cable of minimum section (0.25mm). Con-
ductors should be connected directly and according
to the diagram with accompanies the installation
instructions.
Remote wall terminal
Makes it possible to check the unit through a remote
terminal, up to a maximum distance of 200 meters.
RS-485 serial card (for MODBUS or
LONWORK or BACNET )
A communication interface makes it possible to con-
trol and manage the unit from a local station, with
RS485 connection, up to a distance of 1,000m.
It is possible to obtain the remote control and the
management, by inserting the control into the mana-
gement plant of the building.
Hydronic module
The Hydronic Module, to be installed on site at the
Customer’s expense, is a hydraulic package which
includes all the components required for the fluid
distribution system. It has been designed for outdoor
installation, on the roofing of the building, rather
than directly at the ground level.
The Hydronic Module is enclosed in its own case
and includes:
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an inertial tank
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a single or double pump for standard head or hi-
gh head
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the expansion tank
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a water filter installed near the suction of the pump
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a pressure gauge
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shutoff valves for filter maintenance purposes
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a safety valve, calibrated at 3 bar
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an automatic air relief valve
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fill and drain valves
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thermal insulation for piping and hydronic compo-
nents
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a switchboard (protection class IP54) provided
with main disconnecting switch, contactors and
fuses for the pump and the electric heaters, if any
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antifreeze electric heater (optional)
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kit of antivibrating devices (optional) to be used if
the appliance is to be installed on the refrigerator
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cascade start-up sequencer (up to 4 parallel units).
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