40
STV2I ed 11/09
VICTRIX 2 I Export
Technical Documentation
Technical Documentation
Inputs.
It sends SUMMER/WINTER selector switch, DHW and CH temperature adjustment
and CH request signals to the board
(time, room temperature, error codes, etc...).
Comando Amico Remoto
(CAR)
(optional)
(see CAR functioning)
It is a resistance that can be varied proportionally to the external
temperature.
It allows the integrated P.C.B. to vary the system flow temperature
depending on the external temperature.
External probe (B4)
(
optional
)
PTC probe
1 kΩ 25 °C
It is a resistance that can be varied in an inversely proportional
manner to the temperature of the primary circuit flow water.
It is also used as a limit thermostat (90 °C).
Flow probe
(B1)
NTC probe
10 kΩ 25 °C
It is a resistance that can be varied in an inversely proportional manner
to the output temperature of the DHW.
N.B
.: For the VICTRIX X 2 I model it is a resistance that can be varied
in an inversely proportional manner to the temperature of the DHW
contained in the storage tank.
It is connected to the clamps where the resistance is connected (R8), which
with the coupling to the Storage tank unit, must be eliminated.
Domestic hot water probe
(B2)
NTC probe
10 kΩ 25 °C
It is a signal that indicates that the flame has been detected.
It allows the board to increase or decrease the fan speed after having limited it during the
ignition phase.
Flame detection
(E2)
Indicates that a DHW request is in progress.
Following withdrawal of DHW it enables boiler functioning in the
DHW mode, which is given priority with respect to the system
CH mode.
Domestic hot water flow
switch (S4)
(on instant version only)
Closed = DHW
request
It is a signal which, by means of an opto-isolator, indicates the power supply of the main
coils of the gas valve (Y1).
Gas valve signal
(N1)
It is a switch that allows to power the low voltage circuit (24 V DC) of the integrated
P.C.B. It also allows to activate the functioning mode, to perform manual re-arm of the
integrated P.C.B. (
Reset
) and access boiler calibration.
Main switch
(S2)
It is a clean contact switch that sends a signal (
in low voltage
) to
the board enabling functioning in the CH mode when the room
temperature is lower than that requested.
Room thermostat
(S20)
(
external optional
)
Open = Central
heating OFF
Closed = Central
heating ON
Following water circulation it enables boiler functioning.
System flow switch
(S40)
Closed = presence
of water circula-
tion
Summary of Contents for VICTRIX 26 2 I
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