29
STVZ1I ed 10/09
VICTRIX Zeus 1 I
Technical Documentation
Technical Documentation
Inputs
Low voltage circuit
It is a resistance variable in an inversely proportionally manner to the
temperature of the water. It is positioned at the outlet of the main
exchanger, allowing the integrated P.C.B. to detect the temperature
of the flow water in the primary circuit.
Its breakage (signalled by relative anomaly) blocks burner functioning
both in central heating and domestic hot water modes.
It is also used as a flow limit thermostat (90 °C).
Flow probe
(B1)
NTC probe
10 kΩ 25 °C
It is a resistance variable in an inversely proportionally manner to
the temperature of the water; inserted in a hole made on the external
wall of the storage tank, it allows the integrated P.C.B. to detect the
temperature inside the storage tank.
Its breakage (signalled by relative anomaly) allows the boiler to con-
tinue working in the central heating mode.
Domestic hot water probe
(B2)
NTC probe
10 kΩ 25 °C
Detects the external temperature and allows the integrated P.C.B.
to vary the flow temperature depending on the external tempera-
ture.
It is a resistance that can be varied proportionally to the external
temperature.
External probe
(B4) (optional)
PTC probe
1 kΩ 25 °C
When the pressure of the boiler circuit is below 0.3 bar it determines
burner switch-off.
System pressure switch
(S5)
Open =
No pressure
Closed =
Pressure OK
It enables functioning in CH mode when the room temperature is
below that requested.
If the CAR or Super CAR is installed, the room thermostat must be
disconnected without restoring the pre-existing jumper X40.
Room thermostat
(S20)
(optional)
Open = Central
heating OFF
Closed = Central
heating ON
When the flue safety temperature is exceeded (110 °C) remove the
power supply to the main coils of the gas valve.
The board displays the "02" error code.
It is positioned on the condensation module.
Flue safety thermostat
(E6)
Klixon thermostat
with normally
closed contact
Depending on the position it allows:
= Low voltage circuit not powered.
(
) = DHW functioning and CAR (optional).
(
) = DHW and CH function.
RESET
= Release after ignition failure or overheating safety in-
tervention, allows to activate the chimney sweep function, allows
access the boiler calibration position.
Main selector
(S2)
3-position switch
+ reset position
enclosed on the
board
When the safety temperature is exceeded (100 °C) remove the power
supply to the main coils of the gas valve.
The board displays the "02" error code.
It is positioned on the flow pipe at the outlet of the primary heat
exchanger.
Safety thermostat
(E4)
Klixon thermostat
with normally
closed contact
Summary of Contents for VICTRIX Zeus 26 1 I
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