2 CLAS
2.1 HEATING MODE: OPERATING LOGIC
You can see (for 4 seconds) the temperature that
you are setting on the display by turning the knob .
Through the parameters 425 (min) and 426 (max) is possible set the maximum and the minimum
temperature of the heating.
The heating request can be performed by: room
thermostat 1, room thermostat 2, programming
clock, REMOCON and room sensor. Letter C
will be displayed and then the delivery
temperature (read by sensor NTC1)
When the boiler is at rest the valve is on the
“sanitary” position. When heating is turned on
the motor is supplied (inside shaft in), that
closed the outlet of the secondary exchanger
and puts pump intake in communication with the
heating circuit
The circulating device start is delayed 7 seconds
after heating request in order to allow switching
the 3 way valve; when it starts, the circulating
device intakes the water coming from the
heating system backflow and sends it to the
primary exchanger
The Fan is supplied (sealed chamber models)