14.
Units in modular configuration
(cascade)
A maximum of 16 units can be connected in cascade.
The modular system is controlled by the so-called master
unit (address = 0).
Each module is identified by a specific address (0 to 15).
The sensor for regulating the TW water outlet temperature,
the flow monitor and the electric auxiliary heater must be
controlled/regulated by the master unit.
All units must be electrically connected to one another
via the X-Y-E bus (see Electrical connection chapter,
Each module can be equipped with an inertial system
storage tank.
Each unit with DHW option must have its own DHW storage.
An external pumping unit sized for the entire capacity of
the modular system must be provided (by the Custom
-
er). The pumping unit will be managed by the Master unit
through a potential-free contact and 0-10 V signal.
The flow temperature sensor TW must be installed on the
common flow line of the system.
Bus comunicazione unità modulare
TW probe
Plant diagram inverted return (Tichelmann)
Inlet and outlet collectors
Cooling (kW)
Water pipe
Min
Max
IN-OUT
15
30
DN40
30
90
DN50
90
130
DN65
130
210
DN80
210
325
DN100
325
510
DN125
510
740
DN150
740
1300
DN200
1300
2080
DN250
55
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UnITS In MoDUlaR ConfIGURaTIon (CaSCaDE)
