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STVZ1I ed 10/09
VICTRIX Zeus 1 I
Technical Documentation
Technical Documentation
After 24 hours from the last activation, independently from the functioning status of the
boiler (Summer or Winter), the pump (M1) is started for a time of 30 seconds and the
three-way valve (M30) is started for a period of 10 seconds.
Three-way valve/anti-
block pump
P.C.B. safety functions
If the contact of the water overheating thermostat is opened (temperature of the primary
circuit exceeding 100 °C), boiler functioning is blocked.
The main selector switch (S2) must be turned to the Reset position in order to restore
functioning of the appliance.
Thermostat safety
block
If a fan speed is detected that is out of safe limits (700-5700 rpm) the burner is switched
off and it cannot be re-ignited for 7.5 minutes.
The main selector switch (S2) must be turned to the Reset position in order to restore
functioning of the appliance.
Fan speed anomaly
In the case of dispersion of the detection circuit or anomaly in the flame control that ge-
nerates a correct ionisation current (without the gas valve being open) with the duration of
at least 20 seconds, boiler functioning is blocked.
The main selector switch (S2) must be turned to the Reset position in order to restore
functioning of the appliance.
Parasite flame block
If within 10 seconds from the start of the ignition cycle, the detection electrode (E2) has not
detected flame presence on the burner, boiler functioning is blocked.
The integrated P.C.B. makes 2 ignition attempts with duration of 10 seconds, intervalled by
a time of 30 seconds, after which it blocks.
The main selector switch (S2) must be turned to the Reset position in order to restore fun-
ctioning of the appliance.
N.B.:
It is possible to reset the anomaly up to 5 consecutive times, after which the function is
prevented for at least one hour and one attempt is gained after every hour. Five attempts can
be gained by pressing the Stand-by key or by removing the power supply to the circuit.
No ignition
block
If the contact of the flue overheating thermostat is opened (temperature of the external part
of the condensation module exceeding 110 °C) owing to the combustion impurities deposited
on the heat exchanger (soot, oxidations, etc...), boiler functioning is blocked.
The main selector switch (S2) must be turned to the Reset position in order to restore
functioning of the appliance.
Flue safety thermostat
block
To prevent overheating of the water-gas heat exchanger, at the end of CH (room thermostat
opening), anti-freeze or "chimney sweep" request, the boiler pump (M1) is kept working
for a period of 60 seconds.
Boiler pump post-circu-
lation
The combustion chamber is washed after switch-off of the burner at the end of any request
and the fan works for 55 seconds.
Sealed chamber post-
ventilation
To prevent overheating of the water-gas heat exchanger if the pump is blocked or due to
little circulation in the primary circuit, when the CH NTC flow probe (B1) detects an
increase in the temperature exceeding 5 °C per second (for more than 2 consecutive seconds),
the burner is switched off.
Re-start takes place when the flow temperature falls below 43°C.
Insufficient circulation
If the NTC flow probe (B1) detects a temperature higher than 100 °C, (with boiler in stand-
by), the successive burner ignition request is delayed by 20 seconds and only the pump is
activated. If the successive request takes place with the flow temperature below 70°C the
burner ignition delay is annulled.
Dynamic hysteresis
function
Summary of Contents for VICTRIX Zeus 26 1 I
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