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The panel boards of the XC-K boilers (in cascade) automatically
switch the burners off when the temperature in the boiler reaches
the value set on the heating controller.
They also manage the pump to fill a storage tank for DHW
production.
The heating systems are managed automatically based on the
data detected by the boiler, external, ambient and flow probes.
The high temperature zone C.H. pump is made ready for oper-
ation by the control switch pos. 20 of the MASTER board, and
will only switch off when the temperature set on the heating
controller has been reached.
The low temperature zone C.H. pump is made ready for operation
by the control switch pos. 21 of the MASTER board, and will only
switch off when the temperature set on the heating controller
has been reached.
The storage tank charge pump for DHW production switches on
automatically and will only switch off when the temperature set
on the heating controller has been reached.
The panel is set up to manage the modulating burners.
With this system configuration, the heating controller is capable
of checking:
- direct zone system; the control unit commands the C.H. pump.
The room temperature is controlled by the programming
curves set in the heating controller;
For practical connections, both electrical and of the probes, see the diagrams supplied with the
MASTER and CASCADE panel boards.
- one zone system with motorised mixing valve: the flow probe
(downstream the mixing valve) must be fitted; the control unit
commands the C.H. pump and the mixing valve. The room
temperature is controlled by the programming curves set in
the heating controller;
- DHW production through storage tank;
- anti-legionella function with increase of water temperature
in storage tank (function not enabled in factory, but can be
enabled by customer).
