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2 OPERATION
2.1 HEATING MODE: OPERATING LOGIC
By pushing the buttons “+” o “-“,you can see on
the display (for 4 seconds) the set temperature.
Through the parameters 425 (min) and 426 (max) is possible to set the maximum and the minimum heating
temperature.
The heating request can be performed by: room
thermostat 1, room thermostat 2, programming
clock, REMOCON and room sensor. Icon
and set temperature will be displayed.
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)
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