33
STV2I ed 11/09
VICTRIX 2 I Export
Technical Documentation
Technical Documentation
Allows the integrated P.C.B. to detect the temperature of the pri-
mary circuit flow water.
Its breakage (
signalled by relative anomaly
) blocks burner functioning
both in central heating and domestic hot water modes.
It is positioned at the outlet of the main heat exchanger.
Flow probe
(B1)
NTC probe
10 kΩ 25 °C
It allows the integrated P.C.B. to detect the temperature of the
exiting domestic hot water.
Its breakage (
signalled by relative anomaly
) however allows the
boiler to continue working in the DHW mode even though not
optimally.
It is positioned at the end of the hot water exit pipe.
N.B.:
for the VICTRIX X 2 I model it is inserted into a bulb-holder
in contact with the external wall of the storage tank.
If the DHW probe is installed, the resistance (R8) (
value 2.2 kohm
1/4 W
) must be eliminated.
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 tempe-
rature.
External probe
(B4) (
optional
)
PTC probe
1 kΩ 25 °C
Low voltage circuit.
Safety devices and controls.
Following water circulation it acts on the integrated P.C.B. enabling
boiler functioning.
System flow switch
(S40)
Contact in
Shut-off
Following withdrawal of DHW it acts on the integrated P.C.B.
causing functioning in DHW mode.
In stand-by it enables functioning in CH mode.
Domestic hot water flow switch
(S4)
(on instant version only)
Contact in
Shut-off
Depending on the position it allows:
= Low voltage circuit not powered.
(
) = DHW functioning and CAR
(optional).
(
) = DHW and CH operating.
RESET
= Release after ignition failure or overheating safety in-
tervention, allows to activate the chimney sweep function, allows
access the boiler calibration position.
Main switch
(S2)
3-position switch
+ reset position
enclosed on the
board
Allows long distance control of the generator (
SUM/WIN selector
switch, temperature adjustment and indication, alarms display, reset,
etc.
) and acts as weekly timer thermostat.
If the CAR is installed the pre-existing X40 jumper must be eli-
minated.
Comando Amico Remoto
remote control
(CAR)
(
optional
)
See Comando Ami-
co Remoto remote
control functio-
ning (CAR)
Allows boiler functioning with 3 zone valves o external pumps
controlled by the respective room thermostats.
Zone 1 is controlled
(times and temperatures)
by means of the remote
control
(if mounted),
on which the pump anti-blocking and post-
circulation, anti-freeze, chimney sweep functions etc. take place.
Zones control unit (CZ)
(
external optional
)
See zones control
unit functioning
Summary of Contents for VICTRIX 26 2 I
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