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STVZ1I ed 10/09
VICTRIX Zeus 1 I
Technical Documentation
Technical Documentation
Central heating request with Remote Control
The main selector switch (S2) in "SUMMER and CAR" po-
sition enables the integrated P.C.B. and the Comando Amico
Remoto remote control (CAR).
If the conditions detected by the Comando Amico Remoto
remote control (CAR) require ignition in CH mode (CAR
SUM/WIN selector switch in WINTER position, CH tempera-
ture adjustment higher than that detected by the central heating
flow probe (B1), room temperature adjustment higher than that
detected), the P.C.B. manages the ignition cycle, as described
previously.
DHW request
If the temperature detected by the NTC probe positioned
on the storage tank (B2) is lower than "Storage tank ON in-
tervention temperature" (set-point-3°K with jumper S9 closed,
set-point-10°K with jumper S9 open), the boiler starts a DHW
ignition cycle.
If the system pressure switch contact (S5) is closed (pressure
detected in the primary circuit higher than minimum value),the
integrated P.C.B. powers the pump (M1) and the motor (M)
of the 3-way valve (M30). This functions until the end run
switch "3" opens when the DHW position is reached.
Successively the integrated P.C.B. powers the fan (M20) and
manages the speed.
With the consent of the safety thermostat (E4) and the flue
safety thermostat (E6) and the fan (M20) reaching the "vali-
date ignition" speed, the integrated P.C.B. allows to start the
ignition cycle by controlling, first the ignition electrodes (E1)
and then both the coils of the gas valve (Y1).
The ignition of the burner is detected by the integrated P.C.B.
by means of the ionisation electrode (E2).
When the flame has been detected, the fan speed is increased
in a way to immediately reach (if requested) the maximum
adjusted value.
Successively, the flame modulation guarantees maintenance
of the flow temperature ideal for the correct attainment of
the set.
When the temperature measured by the DHW probe (B2)
exceeds the value requested (temperature set), the burner is
switched off.
Every time the burner switches off the fan functions at mi-
nimum speed for 55 seconds and the pump performs post-
circulation for 60 seconds.
If, during functioning, the flow probe (B1) measures a tem-
perature higher than 90 °C, the burner is switched off. A
new ignition cycle can start only if the temperature drops to
75°C.
Central heating anti-freeze request
When the temperature detected by the CH flow probe (B1)
falls below 4 °C, the board gives consent for ignition and keeps
the generator working with the burner at minimum output
until a boiler temperature equal to 30 °C is reached (radiators
anti-freeze).
N.B.:
The function is active with the main selector switch (S2)
in
(summer) or
(winter) position.
DHW anti-freeze request
When the temperature detected by the DHW probe (B2) falls
below 4 °C, the board gives consent for ignition of the boiler
and keeps the generator working with the burner at minimum
output until a temperature of 10 °C is reached.
During functioning, the water in the primary circuit remains
below 42 °C as on reaching this temperature the board switches
the burner off.
N.B.:
The function is active with the main selector switch (S2)
in
(summer) o
(winter) position.
At the end of any anti-freeze request, a post-circulation is
performed for the duration of 55 seconds.
"Chimney sweep" request
With the boiler in
(Stand-by) position, turn the main
selector (S2) into the Reset position for at least 8 seconds (the
"chimney sweep"
symbol will appear on the display), On its
release, the board gives the consent for ignition of the generator
and keeps it functioning for 15 minutes.
The output is determined from the position of the CH regu-
lation selector (notch N°9 corresponds to the maximum output,
notch N°0 corresponds to the minimum output).
The function is signalled by the flashing "chimney swe-
ep" symbol and the code “E07” on the CAR display (if
mounted).
Only the limit thermostat function performed by the CH
sensor (B1) is respected in this mode (90°C for CH tempe-
rature range 25°C - 85°C or 50°C for CH temperature range
25°C - 50°C).
The "chimney sweep" function is only introduced if there are
no DHW or anti-freeze requests in progress.
It can be cut-off by removing the power supply to the circuit,
taking the main selector switch to the (Stand-by) position
or after 15 minutes.
N.B.:
If the main selector switch is held (S2) in the Reset po-
sition for a time exceeding 15 seconds, the "chimney sweep"
function is exited and the calibration function is activated
(see heat output adjustment). If the main selector switch is
turned (S2) for more than 30 seconds, the boiler will go to
the Stand-by status and the error code E08 will be displayed,
equivalent to "Reset selector switch fault". To restore appliance
functioning the main selector switch must be turned (S2) to
the position (Stand-by).
Summary of Contents for VICTRIX Zeus 26 1 I
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