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Technical Documentation
VICTRIX R 24 1 I functioning sequence.
Central heating mode
Power up
Main switch in Winter position
Enabling functioning of integrated P.C.B.
The closure of the contacts of the main switch (Winter
position) enables function in C.H. mode
Room thermostat switch closure/ CAR functioning
request
Room thermostat or CAR request (if mounted) detects
conditions that require functioning in C.H. mode
Pump and 3-way valve power supply (if present)
The integrated P.C.B. powers the external pump at the boiler
and the electric 3-way valve (if present), the valve is taken to
the central heating position
The flow rate in the primary circuit that is higher than the minimum intercepting value causes the closure of the contact of
With the consent of the over-heating safety thermostat and the flue safety thermostat, the integrated P.C.B. powers the gas
The integrated P.C.B. detects burner ignition by means of the ionisation electrode
The burner functions at a variable power according to the type of request, adjustments/settings made and the temperatures
STVR1I ed 04/08
System flow switch micro switch closure
the system flow switch
Fan power supply
The integrated P.C.B.powers the fan
Ignition electrodes power supply
The integrated P.C.B. powers the ignition electrodes
Gas valves coils power supply
Burner ignition (soft ignition)
The integrated P.C.B. keeps the fan operating at the ignition speed
Flame detection
Boiler functioning
detected by the NTC probes
Main switch in Summer or Winter position
Enabling functioning of integrated P.C.B.
The closure of the contacts of the main switch (Summer
position) enables function in D.H.W. mode
D.H.W. functioning rquest
Storage tank water temperature lower than the
Pump and 3-way valve power supply
The integrated P.C.B. powers the boiler pump and the
electric 3-way valve, the valve is taken to the D.H.W.
valve coils
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Technical Documentation
D.H.W. mode
Power up
temperature set
position
VICTRIX R 24 1 I
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