Table of Contents
Advertisement
Technical Documentation
VICTRIX 75 operating sequence.
Closing of the main switch contacts (ON position) enables operation in the central heating mode
Pressure in the primary circuit higher than the minimum shut-off value causes the pressure switch micro contact to close
Closing of the safety thermostat contacts and flue thermostat enables the boiler to work
A room thermostat request shows conditions that require the central heating function
When the fan reaches the speed in the ignition phase, the integrated board powers the ignition electrodes
When the fan reaches the speed in the ignition phase, the integrated board powers the ignition electrodes
By means of the ionisation electrode the control unit detects burner ignition and sends the signal to this effect to the modulating control
The burner works at a power that varies according to the type of request, to the adjustments/settings made and to the temperatures
STV75 ed 01/08
Heating phase.
Power on
Main switch ON
Integrated board operation enabled
Powering the fan
The integrated board powers the fan
System pressure micro switch closing
Safety thermostat switch closing and flue thermostat
Room thermostat switch closing
Pump power supply
The integrated board powers the boiler pump
Fan function
The integrated board controls the fan speed
Powering the ignition electrodes
Powering the ignition electrodes
Burner ignition (automatic slow ignition)
The integrated board keeps the fan working at ignition speed
Flame detection
board
Boiler working
detected by the NTC probes
36
Technical Documentation
VICTRIX 75
Advertisement
Table of Contents
