7
GENERAL FEATURES
Control system
The unit is managed by a microprocessor controller to which,
through a wiring board, all the electrical loads and the control
devices are connected. The user interface is realized by a
display and four buttons that allow to view and, if necessary,
modify all the operating parameters of the unit. It's available, as
an accessory, a remote control that reports all the functionalities
of the user interface placed on the unit.
The main functions available are :
- water temperature management (through set point
adjustment)
- adaptive function
- climatic control in heating and in cooling mode (automatic set
point adjustment according to outdoor air temperature)
- dynamic defrost cycle management according to outdoor air
temperature
- alarm memory management and diagnostic
- fans management by means of continuous rotational speed
control
- pump management
- integrative electrical heaters management in heating mode
(2 step logic)
- compressor and pump operating hours recording
- serial communication through Modbus protocol
- remote stand by
- remote cooling-heating
- general alarm digital output
Versions
Each model can be supplied in three different versions to satisfy the application requirements of the plants. The unit is always
supplied assembled, wired and factory tested.
The version is automatically identified by the option "Storing and pumping module" selected.
Base Version - VB
The unit does not contain neither
circulating pump nor tank. Therefore
a proper water flow through the plate
heat exchanger must be guaranteed to
prevent internal safety devices activation.
In any case the pump, if properly sized,
can be connected to the electrical panel
of the unit and managed by the controller
of the unit.
Pump Version - VP
The unit contains a circulating pump, air
vents, expansion vessel and drain cock.
Tank Version - VA
The unit contains a tank (arranged as
buffer on the flow towards the plant),
safety valve, circulating pump, air vents,
expansion vessel and drain cock.
The tank is also arranged for the
installation of antifreeze or integrative
electrical heaters.
°C
1
2
1
2
mode
disp
vb
VP
VA
vb
VP
VA
vb
VP
VA