1. No category

Instant wall-hung boilers
condensation-type
VICTRIX 24 kW X
Condensation-type wall-hung
boiler for central heating only
or with an external
storage tank
S.C HABITAT & SERVICE INSTALATII S.R.L
str. Biharia nr.67-77, sector 1, Bucuresti, ROMANIA
reparatiicentrale.com.ro
Dispecerat Non Stop
Tel.: 0729 983 578
Disp.Non-Stop: 0729.983.578
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VICTRIX 24 kW
VICTRIX 24 kW X
VICTRIX 24 kW
Disp.Non-Stop: 0729.983.578
http://reparatiicentrale.com.ro
Technical Documentation
Technical Documentation
VICTRIX 24 kW
Condensation wall hung room-sealed boiler for
central heating and the instant production of
domestic hot water.
VICTRIX 24 kW
General features.
VICTRIX 24 kW is an instantaneous wall-hung room-sealed
(type C) boiler with a nominal heating input of 24 kW (20640
kcal/h) for central heating and 26 kW (22337 kcal/h) for domestic hot water which, thanks to the condensation technology,
stands out for its particularly high performance and ample
modulation range (from 20% to 100 % of the rated output).
The boiler is equipped with a total premix combustion system
that guarantees minimal polluting emissions and it can run on
either natural gas or L.P.G.
The VICTRIX 24 kW series of boilers is type-approved for installation outside the building in a partly sheltered location.
Note: By a partly sheltered location we mean a place where the
appliance is not exposed directly to the weather (rain, snow, hail,
etc.).
The boiler is adjusted and controlled by a microprocessor
controlled p.c.b. with continuous 2-sensor flame modulation
(d.h.w. and central heating), which, by means of a backlit display, shows boiler operating status (temperatures, safety devices,
etc.) and it also allows connection (optional) to the Remote
Control, to the external probe, to the zone control unit and
to the Multi-system Distribution Manifold.
The hydraulic circuit is equipped with a water-gas exchanger
with stainless steel heating coil and uses the new hydraulic unit
made in a composite material on which the devices to control
the hydraulic circuit are housed (the system’s absolute pressure
switch, 3-bar safety valve, automatic system by-pass, etc.), besides
the circulator and 3-way electric valve which allows, according
to requirements, the circulation of boiler water in the central
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heating system or in a stainless steel plate exchanger for the
instant production of domestic hot water.
One of the boiler’s standard features is an antifreeze device
that protects against temperatures down to a minimum -5°C
(optional down to -15°C).
The VICTRIX 24 kW boiler must be installed using the intake/
outlet kits or ducting systems (60 mm Ø rigid, 80 mm Ø rigid
and 80 mm Ø flexible) made of plastic and expressly conceived
and designed for Immergas condensation boilers.
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
VICTRIX 24 kW X
Condensation wall-hung boiler for central
heating only which can be connected to a separate storage tank.
VICTRIX 24 kW X
General features.
VICTRIX 24 kW X is a wall-hung room-sealed (type C) boiler
with a nominal heating input of 24 kW (20640 kcal/h) for
central heating only and designed, thanks to a kit (optional)
to be connected to a separate Storage tank with an 80, 105,
120 or 200 litre capacity.
The boiler, thanks to the condensation technology, stands out
for its particularly high performance and ample modulation
range (from 20% to 100 % of the rated output). The boiler is
equipped with a total premix combustion system that guarantees minimal polluting emissions and can run on either
natural gas or L.P.G.
The VICTRIX 24 kW X series of boilers is type-approved for
installation outside the building in a partly sheltered location.
Note: By a partly sheltered location we mean a place where the
appliance is not exposed directly to the weather (rain, snow, hail,
etc.).
The boiler is adjusted and controlled by a microprocessor
controlled p.c.b. with continuous flame modulation which,
by means of a backlit display, shows boiler operating status
(temperatures, safety devices, etc.) and it also allows connection
(optional) to the Remote Control (with which you can easily
control the boiler remotely), to the external probe, to the zone
control unit and to the Multi-system Distribution Manifold.
The hydraulic circuit is equipped with a water-gas exchanger
with stainless steel heating coil and uses the new hydraulic unit
made in a composite material on which, besides the circulator,
the devices to control the hydraulic circuit are housed (the
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system’s absolute pressure switch, 3-bar safety valve, automatic
system by-pass, etc.).
One of the boiler’s standard features is a antifreeze device
that protects against temperatures down to a minimum -5°C
(optional down to -15°C).
The VICTRIX 24 kW X boiler must be installed using the
intake/outlet kits or ducting systems (60 mm Ø rigid, 80 mm
Ø rigid, and 80 mm Ø flexible) made of plastic and expressly
conceived and designed for Immergas condensation boilers.
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
VICTRIX 24 kW main dimensions and connections.
Height (mm)
Width (mm)
Depth (mm)
795
440
250
CONNECTIONS
GAS
Legend:
V -
G -
AC -
AF -
SC -
R -
M -
DOMESTIC
WATER
SYSTEM
G
AC
AF
R
M
3/4”*
1/2”
1/2”
3/4”
3/4”
Electrical connection
Gas supply
D.H.W. outlet
D.W. inlet
Condensation runoff (minimum inside diameter 13 mm Ø)
System return
System delivery
VICTRIX 24 kW X main dimensions and connections.
Height (mm)
795
Width (mm)
Depth (mm)
440
250
CONNECTIONS
GAS
Legend:
V -
G -
RU -
MU -
RR -
SC -
R -
M -
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3
WATER
SYSTEM
G
RR
R
M
3/4”*
1/2”
3/4”
3/4”
Electrical connection
Gas supply
Storage tank return (optional)
Storage tank delivery (optional)
System filling cock
Condensation runoff (minimum inside diameter 13 mm Ø)
System return
System delivery
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
VICTRIX 24 kW control panel.
Legend:
1 - Boiler status indicator display
2 - Stand-by - D.H.W./Remote Control - D.H.W. and C.H. - Reset selector switch
3 - D.H.W. temperature selector switch
4 - C.H. temperature selector switch
5 - Boiler manometer
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VICTRIX 24 kW Export
Technical Documentation
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VICTRIX 24 kW main components.
Legend:
1 - Electrical connection terminal block
(extra low voltage)
2 - System draining cock
3 - Condensate siphon
4 - Gas valve
5 - D.H.W. probe
6 - Voltage transformer
7 - D.H.W. exchanger
8 - Fan
9 - Gas nozzle
10 - System expansion vessel
11 - Venturi
12 - Burner
13 - Flue safety thermostat
14 - Detection electrode
15 - Air intake pipe
16 - Pressure point, negative signal
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17 -
18 -
19 -
20 -
21 -
22 -
23 -
24 -
25 -
26 -
27 -
28 -
29 -
30 -
31 -
5
Pressure point, positive signal
Testing holes (air A) - (fumes F)
Draught diverter
Condensation module
Ignition electrodes
Delivery probe
Safety thermostat
Automatic air vent
Boiler circulator
System pressure switch
3-way valve (motorised)
Automatic by-pass
3-bar safety valve
D.H.W. flow switch
System filling valve
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
VICTRIX 24 kW X main components.
Legend:
1 - Electrical connection terminal block
(extra low voltage)
2 - System draining cock
3 - Condensate siphon
4 - Gas valve
5 - Voltage transformer
6 - Fan
7 - Gas nozzle
8 - System expansion vessel
9 - Venturi
10 - Burner
11 - Flue safety thermostat
12 - Detection electrode
13 - Air intake pipe
14 - Pressure point, negative signal
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15 -
16 -
17 -
18 -
19 -
20 -
21 -
22 -
23 -
24 -
25 -
26 -
27 -
6
Pressure point, positive signal
Testing holes (air A) - (fumes F)
Draught diverter
Condensation module
Ignition electrodes
Delivery probe
Safety thermostat
Automatic air vent
Boiler circulator
System pressure switch
Automatic by-pass
3-bar safety valve
System filling valve
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
VICTRIX 24 kW hydraulic diagram.
Legend:
1 - Condensate siphon
2 - D.H.W. flow switch
3 - Flow limiter
4 - System filling valve
5 - D.H.W. probe
6 - Gas valve
7 - Gas valve outlet pressure point (P3)
8 - Venturi positive signal(P1)
9 - Venturi negative signal(P2)
10 - Venturi air/gas manifold
11 - Fan
12 - Gas nozzle
13 - Detection electrode
14 - Flue safety thermostat
15 - Air intake pipe
16 - Condensation module
17 - Draught diverter
18 - Air testing hole
19 - ∆p gas pressure point
20 - Flue testing hole
21 - Delivery probe
22 - Safety thermostat
23 - Ignition electrodes
24 - Burner
25 - Condensation module lid
26 - System expansion vessel
27 - Automatic air vent
28 - Boiler circulator
29 - System pressure switch
30 - D.H.W. exchanger
31 - 3-way valve (motorised)
32 - Automatic by-pass
33 - System draining cock
34 - 3-bar safety valve
G -
AC -
AF -
SC -
R -
M -
Gas supply
D.H.W. outlet
D.W. inlet
Condensation runoff
System return
System delivery
The hot water for heating and domestic use is produced by a
primary and secondary (D.H.W.) circuit that activated according to the request made.
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VICTRIX 24 kW Export
Technical Documentation
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VICTRIX 24 kW X hydraulic diagram.
Legend:
1 - Condensate siphon
2 - System filling valve
3 - Gas valve
4 - Gas valve outlet pressure point (P3)
5 - Venturi positive signal(P1)
6 - Venturi negative signal(P2)
7 - Venturi air/gas manifold
8 - Fan
9 - Gas nozzle
10 - Detection electrode
11 - Flue safety thermostat
12 - Air intake pipe
13 - Condensation module
14 - Draught diverter
15 - Air testing hole
16 - ∆p gas pressure point
17 - Flue testing hole
18 - Delivery probe
19 - Safety thermostat
20 - Ignition electrodes
21 - Burner
22 - Condensation module lid
23 - System expansion vessel
24 - Automatic air vent
25 - Boiler circulator
26 - System pressure switch
27 - Automatic by-pass
28 - System draining cock
29 - 3-bar safety valve
G -
RU -
MU-
RR -
SC -
R -
M -
Gas supply
Storage tank return (optional)
Storage tank delivery (optional)
System filling cock
Condensation runoff
System return
System delivery
The primary circuit and its control and safety devices start
working each time a central heating or antifreeze request is
made.
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
Primary circuit (boiler circuit).
The primary circuit with relevant control and safety devices
is triggered each time there is a request for either central
heating or domestic hot water.
This depends on the position of the motorised 3-way valve (31)
which, when idle, permits flow to the d.h.w. exchanger (30)
while, when responding to a heating request, diverts the flow
to the system delivery (M) and return (R) pipes.
Operation (see the VICTRIX 24 kW hydraulic
diagram).
Flow-head graph.
The trend of the curve that represents the system flow-head
ratio depends on the speed at which the circulator is working
and whether or not the automatic system by-pass is on which
makes it possible to set the system for a bigger or small head.
The following graph shows the characteristic curves.
The heat contained in the fumes produced by combustion is
absorbed by the pipes of the water-gas coil exchanger fitted in
the condensation module (16) which, in turn transfers it to the
water circulating inside thanks to the boiler pump (28).
The water is then transferred directly into the system or else
can be diverted inside a stainless steel instantaneous plate
exchanger (30).
Head (m H2O)
Head (kPa)
VICTRIX 24 kW - VICTRIX 24 kW X
A
B
Flow Litres/h
A = Head available to the system on maximum speed with the by-pass off
C = Head available to the system on maximum speed with the by-pass on
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VICTRIX 24 kW Export
Technical Documentation
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Boiler circulator (1).
It works on the primary circuit return and is part of the pump
body made with a composite material.
The automatic air vent (2) is housed directly on the body.
2
1
Primary exchanger
(condensation module).
FUMES
It consists of a casing containing 4 coil shaped elements.
In turn, each element consists of 5 elliptic pipe spirals (3).
The whole module is made of stainless steel and the inner
part is the sealed combustion chamber and condensation
chamber (2).
The first three elements are involved directly in the action of
the cylindrical burner, fitted on the front, while the fourth is
inside the condensation chamber which is separated from the
combustion chamber by a metal plate (see flue circuit).
To minimise head losses and increase the flow available to the
system, the delivery has the first two elements connected in
parallel while the return has the last two elements connected
in parallel.
The exchanger inlet is connected to the circulator delivery and
the outlet, on which the NTC heating sensor (1) is positioned,
is connected to the primary circuit delivery.
The primary circuit’s delivery and return pipes are connected
by means of threaded fittings and a flat seal.
The draught diverter (4) is connected at the back by means of
a seal locked by a metal ring.
Condensation is drained from the bottom.
4
3
2
1
RETURN
DELIVERY
CONDENSATION
RUNOFF
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VICTRIX 24 kW Export
Technical Documentation
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Motorised 3-way valve for combined versions.
It consists of an electric motor (1) connected to the 3-way unit
(2) by means of a fork.
According to the request made (d.h.w. or central heating), this
valve allows boiler water to flow into the central heating system
or in the d.h.w. plate exchanger.
This depends on the position of the shutter (4) which closes
passage to the system while simultaneously opening it to the
d.h.w. exchanger (d.h.w. position) or vice versa (central heating
position).
The motor (1) is made to work by the electronic board and,
with each 180° rotation, the shutter (4) moves into both positions (d.h.w. or central heating).
The hydraulic part consists of a brass unit (2).
Exchanger
delivery
Exchanger
return
2
Operation in the central heating mode.
The shutter’s (4) contrasting spring (3) is not compressed
(central heating position), keeping passage to the d.h.w. plate
exchanger closed and passage to system delivery open.
Both the spring (3) and shutter (4) are located inside the 3way brass body (2).
Operation in the d.h.w. mode.
The hydraulic unit is always in the d.h.w. mode. The electric
motor (1) pushes the rod (5) to which the shutter (4) is connected which closes passage to the system, simultaneously
opening it to the d.h.w. plate exchanger, the shutter’s (4)
contrasting spring (3) is compressed (d.h.w. position).
Both the spring (3) and shutter (4) are located inside the 3way brass body (2).
1
D.h.w.
exchanger
delivery
System
delivery
5
4
3
EXCHANGER
DELIVERY
D.H.W.
EXCHANGER
DELIVERY
SYSTEM
DELIVERY
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VICTRIX 24 kW Export
Technical Documentation
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Safety devices and checks for combined versions.
Automatic system by-pass (4).
This device guarantees the circulation of water in the primary
circuit (between delivery and return) also when it would be
prevented by the high resistance of the system.
It is mounted between the circulator body and the 3-way
unit.
It can be opened or closed by the screw (4) accessible at the
front: with the screwdriver slot horizontal the by-pass is on
(open), with the screwdriver cut vertical it is off (closed).
5
2
6
System filling cock (7).
It is positioned between the boiler circuit and the domestic cold
water inlet and is used to pressurise the heating system.
The filling unit is connected to the d.h.w. flow switch (6) by
means of a threaded fitting and connected to the pump unit
(2) by means of an O ring.
System pressure switch (5).
It detects the pressure inside the primary circuit.
It is housed in the circulator body (2) and connected to a microswitch that prevents the burner working when the pressure
measured is lower than 0.3 bar.
It prevents the primary exchanger from overheating.
7
1
Automatic air vent (1).
It automatically expels any gaseous substances there may be
in the boiler circuit.
It is mounted on the circulator delivery directly on the circulator body (2).
2
3-bar safety valve (3).
It prevents the safety pressure (3 bar) from being exceeded in
the primary circuit.
It is at the front of the circulator body (2) and fixed with a
fork.
When this valve trips it causes water to come from the boiler
return.
3
System expansion vessel (8).
It offsets volume variations resulting from water heating thus
restricting pressure variations.
It has an 8-litre capacity (5.7 actual litres) and a pre-load pressure of 1.0 bar.
It is located on the right side of the boiler, by the side of the
combustion chamber and a copper pipe connects it to the cold
water inlet manifold.
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VICTRIX 24 kW Export
Technical Documentation
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Motor for the 3-way valve (optional) for central
heating versions only.
It is an electric motor (1) connected to the 3-way unit (2) and
locked by a fork that allows, according to the request made
(d.h.w. or central heating) boiler water to flow into the central
heating system or in the d.h.w. exchanger (separate Storage Tank
with a 80, 105, 120 or 200 litre capacity).
This depends on the position of the shutter (4) which closes
passage to the system while simultaneously opening it to the
d.h.w. exchanger (d.h.w. position) or vice versa (central heating
position).
The shutter (4) is moved in either position by powering the
motor (1) (optional).
The hydraulic part consists of a brass unit (2).
Exchanger
delivery
Exchanger
return
2
Operation in the central heating mode.
The hydraulic unit is always in the system heating mode position; the shutter’s (4) contrasting spring (3) is not compressed
(central heating position), keeping passage to the d.h.w. exchanger (storage tank heating coil) closed and passage to system
delivery open.
Both the spring (3) and shutter (4) are located inside the 3way brass body (2).
System
delivery
1
4
Storage
tank
heating coil
delivery
3
5
Operation in the d.h.w. mode.
The electric motor (1) pushes the rod (5) to which the shutter
(4) is connected which closes passage to the system, simultaneously opening it to the d.h.w. exchanger (storage tank heating
coil), the shutter’s (4) contrasting spring (3) is compressed
(d.h.w. position).
Both the spring (3) and shutter (4) are located inside the 3way brass body (2).
EXCHANGER
DELIVERY
CAP
SYSTEM
DELIVERY
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VICTRIX 24 kW Export
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Safety devices and checks for central heating
versions only.
Automatic system by-pass (4).
This device guarantees the circulation of water in the primary
circuit (between delivery and return) also when it would be
prevented by the high resistance of the system.
It is mounted between the circulator body and the 3-way
unit.
It can be opened or closed by the screw (4) accessible at the
front: with the screwdriver slot horizontal the by-pass is on
(open), with the screwdriver cut vertical it is off (closed).
5
2
System filling cock (7).
It is a ball cock positioned between the boiler circuit and the
domestic cold water inlet and is used to pressurise the heating
system.
The cock is connected to a fill-up coupling (6) which, in turn,
is connected to the circulator body (2).
6
7
System pressure switch (5).
It detects the pressure inside the primary circuit.
It is housed in the circulator body (2) and connected to a microswitch that prevents the burner working when the pressure
measured is lower than 0.3 bar.
It prevents the primary exchanger from overheating.
1
Automatic air vent (1).
It automatically expels any gaseous substances there may be
in the boiler circuit.
It is mounted on the circulator delivery directly on the circulator body (2).
2
3-bar safety valve (3).
It prevents the safety pressure (3 bar) from being exceeded in
the primary circuit.
It is at the front of the circulator body (2) and fixed with a
fork.
When this valve trips it causes water to come from the boiler
return.
3
System expansion vessel (8).
It offsets volume variations resulting from water heating thus
restricting pressure variations.
It has an 8-litre capacity (5.7 actual litres) and a pre-load pressure of 1.0 bar.
It is located on the right side of the boiler, by the side of the
combustion chamber and a copper pipe connects it to the
fill-up fitting (6) which, in turn, is connected to the circulator body (2).
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VICTRIX 24 kW Export
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Secondary circuit (D.H.W. Circuit) only for combined versions.
Operation.
When domestic water is drawn, cold water flows inside the
d.h.w. flow switch (1) which closes the electrical contact coupled to it (see the electrical circuit).
As a result, the integrated board starts the d.h.w. priority phase
that ignites the burner and, if there’s an ongoing central heating
request, switches the 3-way valve (2) moving it into the working
position (see operation of the hydraulic 3-way valve).
This causes the delivery pipe (M) to close and simultaneously
opens passage to the d.h.w. exchanger (3).
In this way circulation in the central heating system is prevented while it is allowed in the plate exchanger, inside which
the domestic cold water absorbs the heat from the primary
circuit water (see d.h.w. exchanger).
So in this phase central heating is off, domestic hot water
having priority.
The water/water heat exchange takes place inside the d.h.w.
exchanger (3) which is fastened to the d.h.w. inlet (1) and
outlet (2) body with screws.
The top of the body on the left allows cold domestic water to
enter, while at the bottom it allows primary circuit return.
Likewise, the top part of the body on the right allows the outlet
of domestic hot water while at the bottom it allows primary
circuit delivery.
The d.h.w. probe (4) is mounted on the d.h.w. outlet pipe (5)
which allows the integrated board to measure the temperature
of the domestic hot water.
5
4
Domestic hot
water outlet
Domestic cold
water inlet
3
1
Primary
circuit return
Domestic hot
water outlet
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Primary
circuit delivery
2
VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
D.H.W. flow switch (2).
Whenever domestic hot water is drawn at a rate of at least 1.5
l/min and with a dynamic pressure of 0.3 bar, the flow switch
(2) enables the boiler to work in the d.h.w. mode.
This is done by means of a magnet that, rising when hit by the
flow of domestic cold water, moves near to an electrical contact
(reed relay) causing it to move thanks to the magnetic effect.
When the contact closes, located outside the pipe through
which the water flows, it enables the adjustment board to start
the domestic hot water priority phase.
It consists of two parts (one in brass and one in plastic) that are
coupled together and locked with a pin.
The G1/4” thread on its body connects it to the system filling
cock (3).
A 7.0 l/min (at 2 bar) flow limiter (1) is installed on the flow
switch output.
1
2
3
D.c.w.
inlet
D.H.W. exchanger.
It is a water-water exchanger made in stainless steel with 16
plates one on top of the other and on whose surface the boiler
circuit water and the domestic cold water flow in counter current and through which heat exchange takes place between the
two lots of water.
The hydraulic coupling is done using four O rings (1) so it
can be connected directly to the d.h.w. inlet and d.h.w. outlet
bodies.
1
D.c.w.
inlet
1
Primary
circuit
return
D.h.w.
outlet
Primary
circuit
delivery
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VICTRIX 24 kW Export
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Technical Documentation
Air-gas circuit.
Gas valve.
The gas valve is equipped with two main coils controlled by
the electric circuit and with a pneumatic unit that modulates
the outlet gas pressure in 1:1 ratio to the pressure (P1) detected
on the inlet of the Venturi pipe.
The calibration of the ratio between the air and gas pressures
are carried out on the valve (off-set) (see gas regulations).
Electrical coils (4).
There are two ON-OFF coils that are powered (230 V AC) by
an integrated P.C.B. when the burner must be ignited.
They are connected in series and powered by the mains voltage
rectified by means of a jumper of diodes arranged inside the
connector (3).
Pneumatic unit (2).
Allows to vary the outlet pressure in 1:1 ratio with the pressure
(P1) detected at the inlet of the Venturi pipe that is taken back
to the valve using a small silicone pipe (1).
Thanks to this system, the percentages in the air-gas mixture
are maintained constant at optimal values on the entire range
of modulation, thus guaranteeing a more or less constant
combustion efficiency.
The air-gas ratio calibration can be performed using the off-set
adjusting screw (2).
This is necessary only when, after having performed flue
analysis, incorrect combustion parameter values are detected
(see air-gas ratio regulation).
The circuit consists of a total premix combustion system composed of a fan (5), a pneumatic gas valve (7), a Venturi pipe
(3) and a special cylindrical burner (8) that operates inside the
condensation module.
Functioning.
The fan (5) is controlled by the integrated P.C.B. that varies
its speed depending on the output requested.
Its functioning allows to withdraw combustion agent air from
outside of the sealed chamber and introduce it into a pipe
where a Venturi pipe is inserted (3).
At the inlet to the Venturi (3) there is a positive pressure signal
(P1) variable in a directly proportional manner to the amount
of air taken in by the fan (5) and which is detected by a pressure
point connected to the pneumatic gas valve (7).
The electric power supply of the valve main coils causes both
internal shutters to open and allows the passage of gas, whose
outlet pressure is regulated by the same pneumatic valve in a
1:1 ratio to pressure “P1”.
The gas is injected at the entry of the Venturi pipes (3) through
a nozzle (4), where the premix starts with the combustion
agent air.
The mixture obtained in this way is ignited on the surface
of the cylindrical burner (8) by the discharge of the ignition
electrodes (9).
Dungs
1
2
3
4
VK 4115
1
2
3
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Fan.
Operates upstream from the combustion chamber and is
positioned under the condensation module.
It is controlled by the integrated P.C.B. with a positive square
wave signal with variable ON-OFF ratio (duty-cycle).
Its speed is adjusted (from about 1100 to about5100 rpm)
depending on the power requested and is controlled using a
sensor with Hall effect, which detects the number of revs.
The fan withdraws the combustion agent air in the upper
part of the sealed chamber through a plastic pipe (1), which
contributes to reducing the noise and optimises burner
ignition.
The variation of the air flow rate that s introduced into the
mixing pipe, leads to the change of the pressure signal (P1) at
the inlet of the Venturi pipe and allows the pneumatic valve
to regulate the pressure of the outlet gas.
1
Venturi.
The Venturi pipe (1) is inserted into a sealed pipe, inside which
the combustion agent air and the gas are mixed.
The air is introduced by the fan in the lower area of the pipe,
while the gas exiting the valve is injected by a nozzle (2) in
correspondence with the Venturi pipe inlet (1).
The passage of air in the pipe creates a depression (“Venturi
effect”) which, through the 4 holes (3) present at its base, allow
to “drag” the gas inside and to mix it with the air.
The nozzle (2) has a different diameter depending on whether
natural gas or LPG is used as, working with both gases with
more or less constant pressure, its section establishes the correct
gas flow rate.
There are two pressure points at the ends of the Venturi pipe,
used to detect the inlet (P1) and outlet (P2) signals.
Using two small silicon pipes, these signals are taken respectively
to the pneumatic gas valve, which must regulate the gas pressure
and to the negative pressure point (P2) arranged in the upper
part of the sealed chamber.
AIR
ARIA
4
9
6
2
Burner.
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1
It is a cylindrical burner (5) made up from 2 concentric sheet
steel sections, appropriately perforated and built using a
special steel that is particularly resistent to high temperatures
and corrosion.
It is inserted inside the condensation module, in a sealed
combustion chamber closed by a flange (4) onto which the
burner is fixed, which in the meantime guarantees its direct
connection to the air-gas mixing pipe (6).
The premixing, the lack of secondary air and the construction
features of the burner ensure high combustion efficiency and
particularly reduced pollutant emissions (see technical data).
The material's high resistance to temperature, allows to work
with a very low flame to a minimum power of 4.7 kW (4,042
kcal/h) (20 % of the heat output).
Ignition takes place by means of an integrated P.C.B. that
controls the ignition (7) and detection electrodes (9).
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7
3
P1
P2
GAS
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Ignition electrodes (7).
They are controlled by an igniter (activated by the integrated
P.C.B.) that causes an electrical discharge between the two
electrodes on which, on contact, the air-gas mixture ignites.
The electrode (8) has no ceramic insulation and is connected
directly to earth (blind electrode).
They are positioned on the right side of the burner and fixed
onto the flange (4) of the same.
Note: If the igniter must be replaced, for correct connection
of the ignition electrodes, follow the lay-out given below
(otherwise no discharge is obtained).
AIR
ARIA
4
9
5
6
Detection electrode (9).
It is controlled by the the integrated P.C.B. and detects ignition of the burner.
It also acts as a flue safety device when any air intake problems
or problems with the evacuation of combustion products make
the burner function below minimum output.
In this case the flame block due to no detection by the
electrode.
In order to protect the combustion circuit, the same type of
block prevents the module from filling with water when there
is difficulty draining condensate (trap blocked, etc).
It is fixed onto the left side of the burner flange (4).
Note: In the case of ignition block, check the distances of the
ignition and detection electrodes keeping to the heights stated
in the figure below.
2
8
1
7
3
P1
P2
GAS
IGNITER DRAWING
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Disassembly of combustion circuit main components.
2
3
1
8
9
15
14
13
12
7
6
5
10
11
4
18 17
16
19
26
20
21
23
24
9
7
22
Before disassembling the components, make sure the gas cock
is closed.
N.B.: when restoring the connection between condensation
module and flue hood, pay particular attention to the correct
positioning of the lip gasket (6) and the seal seating (5).
Gas nozzle replacement (19).
Loosen the gas pipe (16) in order to access the gas nozzle (19)
positioned at the entry of the Venturi pipe, then replace it with
the gas nozzle that has the suitable diameter for the type of gas
(see gas transformation).
N.B.: on re-assembly of the nozzle (19) pay particular attention
to the correct positioning of the gas gasket.
Flue hood disassembly (1).
Loosen the two nuts (4) that fix the flue hood to the
condensation module support sheet steel (3), then separate
the flue hood from the flange with sample points, pulling
downward.
N.B.: when re-mounting the flue hood and restoring the
connection between flue hood and flange with sample
points, check the status of the flue gasket (2) and its correct
positioning.
Burner disassembly (10).
Loosen the gas pipe (16) and unscrew the two screws (21)
that fix the collector to the fan, then loosen the 6 blind nuts
(15) that block the gas collector flange to the condensation
module (8). To replace the burner graphite gasket (11) loosen
the 4 screws (24).
N.B.: on re-mounting the burner unit/collector pay particular
attention to the correct positioning of the cord packing (23),
gas gasket (25), gas pipe gasket (16) and gasket between fan
flange and gas collector (13).
Disassembly and replacement of ignition and detection
electrodes.
Loosen the two fixing screws on the ignition electrodes unit
(22) or (26). Loosen the two fixing screws on the detection
electrode (14).
N.B.: when re-mounting the detection electrode (14) and the
ignition electrode (22) be sure to re-mount the O-ring while
for the dummy electrode (26) be sure to remount the gasket
correctly. For all electrodes, scrupulously follow the minimum
heights stated in the diagram in the page at the side.
Condensation module disassembly (8).
Before carrying out the operation drain off all water present
inside the module.
Loosen the tightening bolts on the system flow and return
pipes positioned in the lower part of the module. Loosen the
two screws (7) and (9) that fix the condensation module to
the support back using brackets and sheet steel.
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Air-gas adjustments.
Calibration of the total pre-mix combustion system envisages,
whenever there is the need, adjustment of the nominal heat
output and air-gas ratio (off-set).
The two operations are normally only required after a gas
conversion, after extraordinary maintenance work (replacing
a component part of the air-gas circuit, replacing the integrated
modulating board, etc.) or when the appliance needs recalibrating.
Note: The rated output has to be adjusted anyway also
during the initial check.
- turn the main selector switch round to the Reset position
for 15 seconds and then let it go when the message “Id”
(identification) appears on the boiler panel display
- once you have accessed the calibration menu, the display
shows the anomaly symbol and the flame symbol with the
upper and lower segments flashing alternately.
Adjusting nominal and minimum heat output.
The availability of maximum output is related to the length of
the intake and outlet pipes. If it is extended, there is a slight
reduction in the quantity (flow) of inlet air and consequently,
also of pressure of the burnt gas.
The boiler is factory set for operation with a horizontal concentric kit, 60/100 Ø, 1 m long, and consequently the use of
flue accessories with higher load losses requires the nominal
output to be checked and adjusted if necessary.
D.h.w.
C.h.
Note: If identification does not occur within 15 seconds,
the boiler goes into the Stand-by status and error code E08
is displayed, meaning “Reset selector knob broken”; to reset
boiler operation turn the main selector switch round to the
(Stand-by) position.
- at this point maximum power in domestic hot water can
be varied using the d.h.w. adjustment selector, adjusting
fan speed from 4500 to 5400 revs until you have a pressure
value (P1-P2) that corresponds to the rated output (notch
no. 9 corresponds to maximum speed = 5400 revs, notch no. 0
corresponds to minimum speed = 4500 revs ).
Note: While adjusting maximum d.h.w. power, the central
heating selector must be set on maximum (notch no. 9).
P1
D.h.w.
maximum nominal
speed adjustment
P2
- once maximum d.h.w. power is set maximum central heating power has to be set with the central heating adjustment
selector. The central heating power adjustment range varies
from maximum (set at that moment by the d.h.w. selector)
to minimum. In this way fan speed can be adjusted until
a pressure value is reached (P1-P2) that corresponds to the
rated output in central heating (see heat output data). While
you are making the adjustment, fan speed is shown on the
display in hundreds of revs a minute.
The operation must be performed in the following way and observing the values given in the heat output adjustment table:
- connect a differential pressure gauge to pressure points P1
(positive point) and P2 (negative point) located at the top of
the sealed chamber (in this way the pressure difference can be
read at the ends of the Venturi pipe (P1-P2) and a pressure signal
is measured that corresponds to the actual air-gas mix flow to
the burner).
- access the calibration function by positioning the d.h.w.
adjustment knob on notch no. 6 and the heating adjustment
knob on notch no. 9.
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maximum
nominal speed
adjustment
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it decreases by turning the screw counter clockwise.
Calibrating CO2 maximum.
- put the C.H. temperature selector switch on the control
panel on maximum and check to see if the measured carbon
dioxide (CO2) value is the same as that indicated in the table
for the rated output (see table).
- if the values are incorrect, restore them to the limits by
means of the gas valve’s gas flow regulating switch (12). By
turning it clockwise the CO2 value drops while by turning
it counter clockwise it rises.
Attention: power referring to operating in the d.h.w. mode
can be adjusted up to a value equal to 26 kW, while power for
operating in the central heating mode must never exceed 24
kW (see technical data relevant to thermal power).
Note: minimum power is adjusted when the rated output is
calibrated. The integrated board, in fact, automatically adjusts
fan speed control so as to maintain the modulation field up to
the minimum power of 4042 kcal/h.
- to confirm and store the settings made, turn the main
selector switch round to the Reset position for at least 2
seconds, the boiler goes to the chimneysweep function and
it is now possible to verify the calibration values with the
burner lit or exit the chimneysweep function, turning the
main selector switch round to the
(Stand-by) position.
Note: If you do not confirm the values set, the calibration
values will not be changed (the previous ones are still active), to
modify the values you have to repeat the sequence from the
beginning.
Air-gas ratio adjustment (off-set).
Correct air-gas ratio adjustment (1:1) is done in the factory and
should be finely adjusted only when carbon dioxide (CO2)
values are found in the fumes that do not correspond to
optimum values.
For this purpose, during the initial inspection or after extraordinary maintenance jobs, a fumes analysis must be
performed at maximum and minimum power that certifies
combustion complies with the values indicated in the following table:
Legend:
1 - Gas valve inlet pressure point
2 - Gas valve outlet pressure point
3 - Off-set adjustment screw
12- Outlet gas flow regulator
VICTRIX 24 kW
CO2 at rated output
(central heating)
CO2 at minimum power
(central heating)
G 20
9.35% ± 0.2
8.90% ± 0.2
G 30
12.25% ± 0.2
11.90% ± 0.2
G 31
10.45% ± 0.2
10.20% ± 0.2
To check correctly and if necessary adjust the air-gas ratio,
proceed as follows:
Gas valve DUNGS.
(up to serial number 3778312)
Calibrating CO2 minimum.
- start the boiler in the chimneysweep mode and set the C.H.
temperature selector switch on the control panel on minimum.
- take some samples of the products of combustion by inserting
the test probe as far as it will go.
- check to see if the carbon dioxide (CO2) value is within the
limits indicated in the table for the minimum power (see
table).
- if the values are incorrect, restore them to the limits by
turning the gas valve’s offset adjustment screw (3).
By turning the screw clockwise the CO2 value increases while
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Gas transformation.
VK 4115 gas valve
(from the serial number 3778313)
Calibration of maximum CO2.
- start the boiler in chimney sweep mode and adjust the
C.H. temperature selector, present on the control panel, to
maximum.
- withdraw the combustion products by inserting the analyser
probe fully home.
- check whether the value of carbon dioxide (CO2) is within
the limits indicated in the table regarding the nominal heat
output (see table.
- if the values are incorrect, take them back within the limits
by acting on the gas flow rate adjusting screws (12) of the
gas valve. By turning in a clockwise direction the CO2 value
decreases, by turning it in an anti-clockwise direction it
increases.
Calibration of minimum CO2.
- take the C.H. temperature selector, present on the control
panel, to minimum and check the correspondence of the
carbon dioxide (CO2) value measured with that indicated in
the table regarding the minimum heat output (see table).
- if the values are incorrect, take them within the limits by
acting on the off-set adjusting screws (3) of the gas valve.
By turning in a clockwise direction the CO2 value increases,
by turning in an anti-clockwise direction, it decreases.
The adaptation to the type of gas different to that for which
the boilers are prepared as per standard is performed using the
relevant kit (methane or LPG).
The transformation consists in the replacement of the burner
nozzles positioned in correspondence with the inlet of the
Venturi pipe and adjustment of the maximum heat output
(see nominal and minimum heat output regulation).
Finally, check the carbon dioxide value (CO2) at maximum
and minimum power output, which must be corrected if
necessary by regulating the off-set signal (see air-gas ration
regulation).
Key:
1 - Gas valve inlet pressure point
2 - Gas valve outlet pressure point
3 - Off-Set adjusting screw
12- Outlet gas flow rate regulator
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Flue circuit.
Flue exhaust
1
13
12
Gas
Air
Condensate
drain
Functioning.
The functioning of the fan positioned at the entry of the airgas mixing pipe, guarantees the fan-assisted expulsion of the
fumes produced by combustion.
These directly hit the three elements of the primary heat
exchanger inserted in the sealed combustion chamber (6) which
has a sheet steel section on its base (7) that divides it from the
condensation chamber (2) and diverts the flow of fumes to the
outside of the module.
In this way the flue gases, before entering the condensation
chamber (2), it the fourth element (3) of the heat exchanger
inside which primary circuit return water runs.
This cools the combustion products further and makes their
condensation easier before escape from the flue hood (1).
The water condensate formed inside the heat exchanger, in
the flue hood and also in the evacuation pipes flows into the
lower part of the module from where, before being discharged,
is conveyed into a siphon (4). Any water formed in the intake
pipes is collected in a valley gutter (13) and by means of a
silicone pipe (10) is conveyed into the siphon (4) to then be
drained away.
4
10
when the temperature detected on the condensation module
exceeds110 °C.
Condensate drain trap (4).
Collects the condensate that forms during boiler functioning
from the bottom of the module.
Its outlet is connected to the draining pipe (11) towards which
the passage of water is allowed but not the passage of fumes,
which could occur following obstruction of the evacuation
pipes.
The height of the column of water in the siphon is in fact
greater than the pressure detected inside the sealed chamber
(module) with the fan at maximum speed and the evacuation
pipes blocked at functioning limits.
This, however, prevents the draining of combustion products
into the sewers.
On commissioning fumes may escape from the exhaust pipe
(11) which disappear after a few minutes of functioning when
the condensate has reached a sufficient height. If this should
take too long, fill the siphon with water manually (4).
Flue hood (1).
It is connected to the rear part of the condensation module
and conveys the combustion products towards the drain fitting
present in the upper part of the appliance.
It s affected by the passage of fumes and water condensate
formed inside it or in the exhaust pipes.
It is constructed in plastic, resistant to the corrosive effects of
the condensate and can work to a temperature of 130 °C (max.
flue temp with flow 85 °C = 78 °C).
A flue safety thermostat is inserted onto the condensation
module (12), to protect the flue hood (1) and which intervenes
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Intake and outlet systems.
(see the intake and outlet flue terminal instructions).
La caldaia VICTRIX kW è predisposta per l’allacciamento
The VICTRIX kW boiler is designed for connecting to the
push-fitting intake/outlet pipes and can be installed either
inside or outside the home (in a partly sheltered location) in
the following configurations:
Outdoors (in a partly sheltered location):
- sealed-chamber, fan-assisted with direct intake (type C) using
the (optional) compulsory top cover kit;
- sealed-chamber, fan-assisted (type C) using the vertical or
horizontal concentric kits, keeping the side caps on, the top
cover kit not compulsory.
Indoors:
- open chamber, fan-assisted (type B23) using the (optional)
compulsory top cover kit;
- sealed-chamber and fan-assisted (type C) using either the
vertical or horizontal concentric kits or the 80/80 Ø separator kit.
As far as the head losses are concerned for each accessory
and the various possible combinations, please see the intake
and outlet flue terminal instructions (boiler instruction
handbook).
Boilers with the condensation technology have to be installed
utilising the specific set of intake and outlet pipes, conceived
for coupling exclusively to the Immergas condensation
boilers.
The flue fittings of the “GREEN SERIES” are made of plastic
material (PPS = self-extinguishing polypropylene) suitable for
resisting the corrosive action of acid condensation.
A
1
2
The flange (2) is used to connect the 80 mm diameter outlet
pipes, used in split systems.
By using the relative accessories we can have either a horizontal
(A) or vertical (B) outlet.
To avoid condensation problems the outlet pipe should be
limited to 30 straight metres.
Using a specific cover (1) to place on the top of the sealedchamber, the boiler can then be installed outdoors in a partly
sheltered spot.
Open chamber and fan-assisted configuration
(type B23) for installation indoors (see figure
above).
Intake.
The cover kit described above is used for this configuration.
By removing the side caps at the top of the sealed chamber and
using the plate (3) to cover the right-hand intake hole, air is
taken directly from the room where the boiler is installed.
Fumes are discharged either through specific 80 mm diameter
pipes in a single chimney or directly outside.
To mount the cover (1) the two caps closing the holes at the
top of the sealed chamber have to be removed and a plate (3)
used to close the right-hand intake hole.
Combustion air is taken directly from the environment, exploiting the gap between the bottom of the cover (1) and the
top of the boiler.
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Outlet.
Sealed-chamber and fan-assisted configuration
with indirect intake (type C) for installation
outdoors in a partly sheltered location (see
figure on the right).
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Sealed chamber and fan-assisted configuration
(type C).
Outlet.
60 /100 push-fit horizontal eccentric kit
The PPS outlet pipe (60 mm Ø) is fitted inside the aluminium
intake pipe (100 mm Ø).
Connection to the boiler is done using a 90° curve (2) which
can be positioned in any direction and which, by means of
the necessary extensions, is connected to the intake and outlet
flue terminal (3).
The overall maximum length permitted beyond the first curve
(2) is 12.9 straight horizontal metres.
Connection to the outlet pipes is by means of a flange (1) or
a flanged curve to fix to the fitting (4) at the top of the sealed
chamber, placing a specifically shaped sealed in between (6).
The flange differs according to whether the system is split or
concentric.
In the first case, the passage for the intake of combustion air
(5) is closed while in the second case it is used.
Intake.
2
Using the split system, connection to the intake pipes is exactly
the same as for the outlet pipes, connecting to the 80 mm
diameter hole (2) at the top of the sealed chamber.
The hole that is not used is closed with one of the caps (3)
supplied with the boiler.
If coaxial pipes are used, air is taken in through the concentric
hole outside the outlet pipe (5).
3
4
5
1
Intake and outlet kits.
The kits with relative accessories permit the use of tree concentric systems, a split system and two specific systems for ducting
(60 Ø rigid, 80 Ø rigid or 80 Ø flexible).
As far as the head losses are concerned for each accessory and
the various possible combinations, please follow the intake
and outlet flue terminal instructions (see the boiler instruction handbook).
The connection between the various accessories (curves, extensions, terminals) is the push-fit type and sealing is ensured by
EPDM peroxide lip seals, resistant to the action of condensation.
60 /100 push-fit vertical concentric kit
The PPS outlet pipe (60 mm Ø) is fitted inside the aluminium
intake pipe (100 mm Ø).
Connection to the boiler is done using a concentric flange
60/100 (2) which, by means of extensions if necessary, is connected to the intake and outlet flue terminal 60 /100 (5) with
an aluminium tile (4).
Maximum overall permitted length is 14.4 straight vertical
metres.
5
4
1
3
5
6
4
7
6
2
3
2
1
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80/80 push-fit separator kit
Both the suction and exhaust pipes (6 and 9) are made in PPS
with an 80 mm diameter.
Connections to the boiler are done using the two relative
flanges that allow discharge (4) from the central connection
fitting and intake (3) from one of the two side holes.
Maximum permitted length (intake + outlet) is 36 straight
horizontal metres and 41 straight vertical metres.
Note: It is compulsory to install an optimiser plate (5) inside
the flange (4) before the outlet pipe.
Ducting system - 60 rigid.
With this kit it is possible to duct 60 mm Ø pipes of existing
stacks/flues/technical slots to be used with one Immergas
condensation appliance only.
It is connected to the outlet pipe of the appliance by means
of a 90° curve (5) which, by means of the necessary vertical
extensions (2), is connected to the relative flue terminal (1).
Pipe clamps (4) will also be used to fix the various accessories
besides the push-fit method with EPDM peroxide seals.
These should be alternated with clamps with spacer fins (3) so
that the outlet pipe can be centred inside the old stack.
The system can be inspected through the hatch (6) on the
opening that connects to the boiler’s fumes extraction pipe.
By using an 80/80 split kit (1 curve + 1 m in both intake and
outlet) with intake grid, the maximum permitted length is 22
straight vertical metres.
10
6
8
6
7
8
A
9
5
B
4
1
3
2
1
2
3
2
4
6
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System for ducting 80 rigid.
It is a kit that allows ducting Ø 80 mm of existing flues/
chimneys/technical slots to be used exclusively with a unique
Immergas condensing appliance.
Fit a 90° bend (5) to the appliance exhaust pipe which, using
the necessary vertical extensions (2), must be connected to the
relevant exhaust terminal (1).
Coupling of the various accessories envisions, as well as fitting
with gaskets in EPDM peroxide, also fastening using pipe
clamps (4).
These must be alternated with clips with spacer fins (3), which
allow centring of the exhaust pipe inside the old flue.
The system can be inspected through the hatch (6) positioned
at the mouth of the fitting with the boiler flue evacuation
pipe.
Using a divided kit 80/80 (1 bend + 1 m in intake and exhaust)
with intake grid, the maximum length allowed is 30 straight
vertical metres.
System for ducting 80 flexible.
It is a kit that allows ducting Ø 80 mm of existing flues/
chimneys/technical slots to be used exclusively with a unique
Immergas condensing appliance.
Fit an 87° bend (4) to the appliance exhaust pipe which, using
the necessary vertical extensions (3), must be connected to the
relevant exhaust terminal (1).
Remember to insert a spacer with fins every now and again
(2), which allows the centring of the exhaust pipe inside the
old flue.
The system can be inspected through the hatch (5) positioned
at the mouth of the fitting with the boiler flue evacuation
pipe.
Using a divided kit 80/80 (1 bend + 1 m in intake and exhaust
+ two variations of the vertical tract) with intake grid, the maximum length allowed is 30 straight vertical metres.
1
1
2
3
2
2
3
4
2
4
6
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
Electric circuit.
Orange
Orange
Blue
Blue
White
White
Red
Blue
Black
White
Orange
Red
Pink
Pink
Grey
Grey
Supply
230 Vac
50 Hz
Orange
Orange
White
White
Blue
Green
Red
Black
Orange
Antifreeze
kit
Violet
Grey
Blue
Brown
Brown
Blue
Black
White (c.h.)
Red (d.h.w.)
Grey
Black
Orange
Red
White
Brown
Blue
Black
Black
ZONES BOARD
(Optional)
No.
FAN REVS
Brown
Key:
A4
B1
B2
B4
CAR
CZ
E1
E2
E4
E6
F1
F2
G2
M1
M20
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Blue
Optional kit
ONE RELAY
BOARD
Display board
Flow probe
Domestic hot water probe
External probe (optional)
Comando Amico Remoto remote control (optional)
Zones control unit (optional)
Ignition electrodes
Detection electrode
Safety thermostat
Flue thermostat
Phase fuse
Transformer fuse
Igniter
Boiler circulating pump
Fan
Orange
Red
Black
M30
S2
S4
S5
S7
S9
S10
S13
S20
T2
U1
X40
Y1
-
-
-
-
-
-
-
-
-
-
-
-
-
Three-way valve
Selector switch functioning
Domestic hot water flow switch
System pressure switch
Central heating timer selector switch
Domestic hot water mode selector switch
Pump mode selector switch
Central heating temperature range selector switch
Room thermostat (optional)
Low voltage transformer
Rectifier inside the gas valve connector
Room thermostat jumper
Gas valve
The control and safety devices partly operate at network voltage
(230 V AC) and partly at low voltage.
The electric circuit of the VICTRIX 24 kW is completely interlocked to a P.C.B. with integrated microprocessor , which
controls the functions of the generator.
230 V AC circuit.
Safety devices and controls.
Detection electrode
(E2)
Line fuse
(F1)
STVkW ed 07/08
Detects burner ignition.
It is connected to the detection circuit of the integrated P.C.B.
Cuts off the power supply to the circuit when the current absorbed
exceeds 3.15A.
It is inserted onto the integrated P.C.B.
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Fuse
3,15 AF 250 V
VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
Transformer fuse
230V / 24V
(F2)
Cuts the power supply to the circuit transformer off (230V/24V)
in low voltage when the current absorbed exceeds 315mA.
It is inserted onto the integrated P.C.B.
315 mAT 250 V
delayed fuse
Safety thermostat
(E4)
When the safety temperature is exceeded (100 °C) remove the
power supply to the main coils of the gas valve.
It is positioned on the flow pipe at the exit of the primary heat
exchanger.
Klixon thermostat
with normally
closed contact
Flue thermostat
(E6)
When the flue safety temperature is exceeded (110 °C) remove the
power supply to the main coils of the gas valve.
It is positioned on the condensation module.
Klixon thermostat
with normally
closed contact
Loads.
Igniter
(G2)
It is controlled by the integrated P.C.B. when burner ignition is requested.
It makes the ignition spark.
It is organised inside the sealed chamber in the area under the condensation module at
the side of the expansion vessel.
Ignition electrodes
(E1)
They cause an electric spark, on the contact of which the air-gas mix ignites.
One electrode is connected to the igniter G2 while the other electrode is connected to
earth.
Pump
(M1)
Integrated P.C.B.
Allows the circulation of water in the primary circuit.
It is powered by the integrated P.C.B. with a DHW, CH or anti-freeze request.
It is always powered and enables functioning of the boiler only when the main switch
(estate) is positioned in (summer) or
(winter) (see integrated P.C.B. functioning).
Transformer
(T2)
It is a 230V/24V transformer that powers the low voltage adjustment circuit. It is located
inside the sealed chamber in the lower left area.
Three-way valve
(M30)
(version kW X optional)
It allows the diversion of the water flow of the primary circuit of the CH system to the
DHW plate heat exchanger and vice versa.
It is powered by the integrated P.C.B.
Gas valve (Y1)
(main coils)
It is powered by the integrated P.C.B. when burner ignition is necessary.
It is powered at network voltage rectified by means of a diode jumper (U1) contained
inside the gas valve connector.
Allows the passage of gas to the burner.
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
Low voltage circuit.
Safety devices and controls.
Comando Amico Remoto
remote control
(CAR)
(optional)
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
eliminated.
See Comando Amico Remoto remote
control functioning
(CAR)
Domestic hot water flow
switch
(S4)
(on combi version only)
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.
Contact in
cut-off
System pressure switch
(S5)
When the pressure of the boiler circuit is below 0.3 bar it determines
burner switch-off.
Contact in
cut-off
Zones control unit (CZ)
(external optional)
Allows boiler functioning with 3 zone valves or 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 postcirculation, anti-freeze, chimney sweep functions etc. take place.
See zones control
unit functioning
Main selector switch
(S2)
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 intervention, allows to activate the chimney sweep function, allows
access to the boiler calibration position.
3-position switch
+ reset position
enclosed on the
board
External probe
(B4) (optional)
Detects the external temperature and allows the integrated P.C.B.
to vary the flow temperature depending on the external temperature.
PTC probe
1 kΩ 25 °C
Flow probe
(B1)
Allows the integrated P.C.B. to detect the temperature of the primary 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 exit of the main heat exchanger.
NTC probe
10 kΩ 25 °C
Domestic hot water probe
(B2)
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.
NTC probe
10 kΩ 25 °C
N.B.: for the VICTRIX 24 kW X model it must be 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.
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VICTRIX 24 kW Export
Technical Documentation
Room thermostat (S20)
(external optional)
Technical Documentation
Enables functioning in CH mode when the room temperature is
below that requested.
If the CAR is installed, the room thermostat must be disconnected
without restoring the pre-existing jumper X40.
Contact in
cut-off
Loads.
P.C.B. to a relay
(optional)
Allows the control of 1 additional zone valve by means of CAR, which must be set in On/Off
mode (see CAR functioning).
Display board
(A4)
Displays the functioning values and error codes intervening on the boiler. Moreover, it indicates the status and functioning mode of the boiler by means of appropriate symbols.
Fan
(M20)
Guarantees the flow of air in the air-gas mixing pipe and the escape of combustion products.
It is powered by the integrated P.C.B.
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
Electric circuit.
CH mode.
CIRCUIT WITH VERY LOW SAFETY VOLTAGE
On
Winter
Car
(optional)
domestic
hot water
sanitario
ZONES CONTROL
UNIT (optional)
CONTROL LOGIC MICROPROCESSOR
P.C.B. TO A
RELAY
(optional)
riscaldamento
Central heating
Reset
P.C.B. TO A
RELAY
(optional)
N° OF
FAN REVS.
Operating with room thermostat.
control.
The main selector switch (S2) in "WINTER" position enables
functioning in the CH mode.
On closure of the room thermostat contact (S20), the integrated P.C.B. powers the boiler pump (M1) by means of the contact
of the K2 relay. The motor (M) of the 3-way valve is powered
simultaneously through the diversion of the K4 relay contact
(M30). The motor functions until the limit switch "2" opens
in when the central heating position has been reached.
If the contact of the system pressure switch (S5) is closed (pressure detected in the primary circuit higher than minimum value)
and if the temperature detected using the central heating flow
NTC probe (B1) is lower than that set on the control panel
with the central heating potentiometer, the low voltage circuit
starts the fan (M20) and successively closes the contact of the
K3 relay request.
This makes sure the ignition is powered (G2), which allows
to start the ignition cycle by powering the ignition electrodes
(E1).
In the meantime, the low voltage circuit excites the relay K1
causing the closure of the 2 contacts. With the consent of the
flue safety thermostat (E6) and the overheating safety thermostat (E4), they power 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).
The main selector switch (S2) in "SUMMER and CAR" position 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 temperature adjustment higher than that detected by the central heating
flow probe (B1), room temperature adjustment higher than that
detected), regolazione temperatura ambiente superiore a quella
rilevata), the P.C.B. powers the boiler pump (M1) by means of
the K2 relay and ignition takes place as described previously.
N.B.: In both cases, at every switch-off owing to the temperature being reached, the integrated P.C.B. blocks burner functioning in CH mode for 180 seconds, which can be reduced
to 30 seconds by operating on the relevant "S7" jumper (see
integrated P.C.B. functioning).
Operating with Comando Amico Remoto remote
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
Electric circuit.
DHW mode
CIRCUIT WITH VERY LOW SAFETY VOLTAGE
On
Winter
Car
(optional)
domestic
hot water
sanitario
ZONES CONTROL
UNIT (optional)
CONTROL LOGIC MICROPROCESSOR
P.C.B. TO A
RELAY
(optional)
riscaldamento
Central heating
Reset
P.C.B. TO A
RELAY
(optional)
N° OF
FAN REVS.
Operating.
The main selector switch (S2) in "SUMMER or WINTER"
position enables functioning in the DHW mode.
A withdrawal of DHW cause the contact to close (S4). If the
temperature detected by the DHW NTC probe (B2) is below
that set on the control panel (or on the CAR if mounted), the
integrated P.C.B. powers the boiler pump (M1) by means of
the K2 relay. The motor (M) of the 3-way valve is powered
simultaneously through the diversion of the K4 relay contact
(M30). The motor functions until the limit switch "3" opens
in when the DHW position has been reached.
If the contact of the system pressure switch (S5) is closed (pressure detected in the primary circuit higher than minimum value),
the low voltage circuit starts the fan (M20) and successively
closes the contact of the K3 relay request.
This makes sure the ignition is powered (G2), which allows
to start the ignition cycle by powering the ignition electrodes
(E1).
In the meantime, the low voltage circuit excites the K1 relay
causing the closure of the 2 contacts. With the consent of the
flue safety thermostat (E6) and the overheating safety thermostat (E4), they power 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).
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
Integrated P.C.B.
(Serial number 3731157 / Software V1.02 MB - V1.00CB)
Fusibile
TRANSFORMER
FUSE
trasformatore
Fusibile
linea
PHASE FUSE
MAIN
SWITCH
N°N°
FANgiri
REVS.
ventilatore
Selettore
temporizzatore
C.H. TIMER
SELECTOR
PUMP MODE
Selettore riscaldamento
SELECTOR
modalità
Selettore
range
C.H. RANGE
circolatore
SELECTOR
riscaldamento
S10 S9 S7 S13
D.H.W.
Operating.
Central heating request.
The main selector switch (S2) in "WINTER" position enables
functioning in the CH mode.
On closure of the room thermostat contact (S20), the integrated P.C.B. powers the boiler pump (M1) by means of the
contact of the K2 relay. The motor (M) of the 3-way valve is
powered simultaneously through the diversion of the K4 relay
contact (M30). The motor functions until the limit switch "2"
opens when the central heating position has been reached.
If the contact of the system pressure switch (S5) is closed (pressure detected in the primary circuit higher than minimum value)
and if the temperature detected using the central heating flow
NTC probe (B1) is lower than that set on the control panel
with the central heating potentiometer, the low voltage circuit
starts the fan (M20) and successively closes the contact of the
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Selettore
D.H.W. MODE
modalità
SELECTOR
sanitario
K3 relay request.
This makes sure the ignition is powered (G2), which allows
to start the ignition cycle by powering the ignition electrodes
(E1).
In the meantime, the low voltage circuit excites the K1 relay
causing the closure of the 2 contacts. With the consent of the
flue safety thermostat (E6) and the overheating safety thermostat (E4), they power both the coils of the gas valve (Y1).
During the ignition phase the fan works at a speed equal to half
the maximum speed set (see heat output adjustment).
The ignition of the burner is detected by the integrated P.C.B.
by means of the ionisation electrode (E2).
In the first seconds after flame presence detection, fan speed is
taken to minimum, after which the speed is varied (modulated)
in a directly proportional manner to the difference between the
temperature set using the CH selector switch and that detected
by the CH flow probe (B1) and, if necessary, in 8.5 minutes it
reaches the maximum adjusted value (maximum output).
When the set temperature is exceeded (+5°C) the K3 relay
contact is opened with consequent switch off of the burner.
Re-ignition for the same request is prevented for 180 seconds,
which can be reduced to 30 seconds by operating on the relevant jumper (see central heating timer selector switch).
Inside the control panel the boiler is equipped with a P.C.B.
with integrated microprocessor for control of the appliance's
electric devices, which takes care of linear modulation of
burner power.
The display shows the status and functioning mode of the
appliance, indicating any intervention of the safety devices,
with which it is supplied.
The P.C.B. supplied with all models, whether with storage
tank or instant (VICTRIX 24 kW, VICTRIX 24 kW X) is
the same, The different type of boiler functioning is recognised
automatically by means of the appliance's wiring.
The integrated P.C.B. is always powered independently from
the selection made on the main selector switch (S2).
STVkW ed 07/08
CENTRAL
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
DHW request for instant boilers.
temperature selector switch and the temperature detected by
the DHW probe (B2).
When the temperature measured by the DHW probe (B2) exceeds the value requested (set temperature), the K1 and K3 relays
are opened (burner switch-off) and after the post-functioning
time also relay K2 (pump).
When the temperature of the DHW contained in the storage
tank drops by 3°C with respect to the temperature set by the
DHW temperature selector switch, the K1 and K3 relays are
closed again in order to start a new ignition cycle.
If, during functioning, the flow probe (B1) measures a temperature exceeding 90°C, the contact of relays K1 and K3 are
opened and are closed again when the temperature drops to
75°C.
Following closure of the DHW flow switch (S4) the burner
ignites in the same way as the central heating mode.
When the flame has been detected, the fan speed is increased
in a way to immediately reach (if requested) the maximum
adjusted value.
Successively, modulation takes place with reference to the
difference between the temperature set using the DHW temperature selector switch and the temperature detected by the
DHW sensor (B2).
With selector switch S9 present (closed = fixed off):
When the DHW probe (B2) measures a temperature of 65
°C the K3 relay contact is opened (burner switch-off), It is
closed again when the temperature drops to 64 °C (burner
ignition).
Central heating anti-freeze request.
With selector switch S9 absent (open = solar function):
the boiler is prepared to receive pre-heated water from a system
of solar panels up to a maximum temperature of 65°C.
In the case of use with higher temperatures it is recommended
to install a mixing valve on the hydraulic circuit upstream
from the boiler.
When the water exiting the boiler is at the same temperature as
that set by the DHW selector switch (sDHW set-point +5°C),
the burner is switched off.
If the exit temperature increases (for more than 5 seconds), or
does not fall below the DHW set-point (+4 °C) in 10 seconds,
the pump is also switched off.
The boiler is kept in the DHW status, displayed on the boiler
control panel.
The boiler will exit the solar mode when the active withdrawal
is terminated or when the temperature decreases (+2°C) with
respect to the DHW set-point.
Independently from the presence of the DHW mode selector
switch (S9), if during functioning the central heating flow
probe (B1) measures a temperature exceeding 80 °C, the fan
speed is decreased and adjusted to maintain a flow temperature
of 80 °C.
If this exceeds 90 °C, the K3 relay contact is opened and is
closed again when the temperature drops to 80 °C.
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
(summmer) or
(winter) position.
DHW anti-freeze request.
If the temperature detected by the DHW probe (B2) falls
below 4 °C, the board gives consent for boiler ignition and
keeps the generator working with the burner at minimum
output until a temperature of 10 °C is reached. Post-circulation
is then activated in the central heating mode with duration
of 60 seconds.
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) or
(winter) position.
"Chimney sweep" request.
With the boiler in
(Stand-by) position (Stand-by), turn
the main selector switch (S2) to the Reset position for at least
8 seconds (the "chimney sweep" symbol will appear on the display
), On its release the board will give consent for ignition
of the generator and keeps it working for the duration of 15
minutes at the power determined by the position of the CH
adjustment selector switch (notch N° 9 corresponds to maximum
output, notch N°0 corresponds to minimum output).
The function is signalled by the flashing "chimney sweep" 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 temperature
range 25 °C - 85 °C and 55 °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.
DHW request for boilers with storage tank
(optional if the Storage tank unit coupling kit is
installed).
If the temperature detected by the DHW NTC probe (B2),
positioned on the storage tank, is lower than that set using the
DHW temperature selector switch, the integrated P.C.B. powers the motor (M) of the 3-way valve (M30) by means of the
contact of the K4 relay. This goes into the DHW position and
simultaneously, by means of the K2 relay contact, powers the
pump (M1). If the contact of the switch (S5) is closed (pressure
detected in the primary circuit higher than minimum value), the
low voltage circuit starts the fan (M20). Successively, burner
ignition takes place as in the CH mode.
When the flame has been detected, the fan speed is increased
in a way to immediately reach (if requested) the maximum
adjusted value.
Successively, flame modulation takes place with reference to
the difference between the temperature set using the DHW
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
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).
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
Inputs.
Comando Amico Remoto remote
control (CAR) (optional)
(see CAR functioning)
It sends SUMMER/WINTER selector switch, DHW and CH temperature adjustment
and CH request signals to the board (time, room temperature, error codes, etc...).
Domestic hot water
flow switch
(S4)
(on instant version only)
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.
System pressure switch
(S5)
When the pressure of the primary circuit is lower than 0.3 bar it
removes the power supply to the K3 relay, thus preventing burner
ignition.
Closed = DHW
request
Open =
No pressure
Closed =
Pressure OK
Flame detection
(E2)
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.
Gas valve signal
(N1)
It is a signal which, by means of an opto-isolator, indicates the power supply of the main
coils of the gas valve (Y1).
Main selector switch
(S2)
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.
External probe (B4)
(optional)
It is a resistance that can be varied proportionally to the external
temperature.
It allows the integrates P.C.B. to vary the system flow temperature
depending on the external temperature.
PTC probe
1 kΩ 25 °C
Flow probe
(B1)
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).
NTC probe
10 kΩ 25 °C
Domestic hot water probe
(B2)
It is a resistance that can be varied in an inversely proportional manner to the exit temperature of the DHW.
N.B.: For the VICTRIX 24 kW X 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 coupling to the Storage tank unit, must be eliminated.
NTC probe
10 kΩ 25 °C
Room thermostat
(S20)
(external optional)
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.
Open = Central
heating OFF
Closed = Central
heating ON
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VICTRIX 24 kW Export
Technical Documentation
Fan speed
Technical Documentation
It is a square wave signal detected with a Hall effect sensor inserted into the fan. It allows
the board to measure the speed and correct it if it does not comply with the requested
value.
Outputs.
Igniter
(G2)
It raises the voltage (greater than 16 kV) causing an electrical spark at the ends of the ignition electrodes, positioned on the burner.
Comando Amico Remoto remote control (CAR) (optional)
(see CAR functioning)
It is a signal (BUS) that shows boiler temperature, functioning in DHW and CH mode,
the alarm codes that have intervened and the temperature detected by any external probe
on the remote control display.
Pump Relay
(K2)
It is a unipolar relay for pump control (M1) that is excited when its functioning is requested.
Relay Request
(K3)
It is a unipolar relay that is excited when burner ignition is necessary.
The boiler is ignited by means of its contact.
Three-way valve relay
(K4)
(on combi version only)
It is a unipolar relay that allows to power the motor (M) of the electric 3-way valve
(M30).
It is excited with a central heating request and remains in stand-by with a domestic hot
water request.
Gas valve relay
(K1)
It is a bipolar relay that allows to power the gas valve coils, with consent of the safety
thermostat and the flue safety thermostat.
P.C.B. to a relay
(optional)
Allows the control of 1 additional zone valve by means of CAR, which must be set in On/Off
mode (see CAR functioning).
Zones control unit (CZ)
(external optional)
It is a signal that allows the zone control unit to know the functioning status of the appliance (domestic hot water/central heating) and, if mounted to recognise the CAR as the
room thermostat in zone 1 (see Zones control unit technical board functioning).
Igniter signal
(N3)
It is a signal coming from the integrated P.C.B. By means of an opto-isolator it allows
the ignition spark.
Fan
It is a positive square wave signal with variable ON-OFF relationship (duty-cicle) that
controls the fan.
It allows to vary the air flow rate to the Venturi pipe and therefore the gas pressure to the
burner.
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Adjustments.
Pump mode selector switch
(S10)
With the SUM/WIN selector switch in the WINTER position, it
allows the pump to function continuously or only on request of
the room thermostat.
Absent =
Continuous func.
Present =
RT request func
Domestic hot water mode
selector switch
(S9)
(serial number 3731157)
In the DHW mode with the selector switch present. the burner
switches off at 65 °C (fixed), With the selector switch absent the
burner switches off at the set temperature +5 °C (solar function).
N.B.: for models with storage (Storage tank unit), the presence or
not of the jumper does not affect boiler functioning.
Absent =
Solar function
Present =
Fixed off
Central heating temperature range selector switch
(S13)
Depending on the position, it allows the central heating potentiometer to adjust the temperature from 25 °C to 85 °C (range 1) or
from 25 °C to 50 °C (range 2).
Inserted = Range 1
Absent = Range 2
Central heating timer selector switch
(S7)
At every switch-off due to the temperature being reached in CH
mode a delay of 3 minutes/30 seconds is inserted until the successive re-ignition for the same request.
Absent = 30 s
Present = 3 min
Safety devices.
Pump anti-block device
The pump (M1) is made to function for 30 seconds after:
- 24 hours of inactivity with the main selector switch in SUMMER position.
- 3 hours of inactivity with the main selector switch in WINTER position.
Three-way valve anti-block device
(on combi version only)
After 24 hours from the last activation, independently from the boiler functioning status
(Summer or Winter), the 3-way valve (M30) is made to function for 10 seconds.
Ignition 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 intervention is signalled with the relative flashing of an error on the boiler control
panel.The main selector switch (S2) must be turned to the Reset position in order to
restore functioning of the appliance.
Parasite flame block
(serial number 3731157)
In the case of dispersion of the detection circuit or anomaly in the flame control that
generates 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.
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Technical Documentation
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Safety thermostat block
If the contact of the water overheating safety thermostat is opened (temperature of the
primary circuit exceeding 100 °C), boiler functioning is blocked. The intervention of the
safety device is signalled on the boiler control panel display with the error code 02.
The main selector switch (S2) must be turned to the Reset position in order to restore
functioning of the appliance.
Flue safety thermostat
block
If the contact of the flue safety 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 intervention of the safety device is signalled on the boiler control panel display with
the error code 02.
The main selector switch (S2) must be turned to the Reset position in order to restore
functioning of the appliance.
Insufficient circulation
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.
Dynamic hysteresis function
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.
Pump post-circulation
To prevent overheating of the water-gas heat exchanger, at the end of CH (room thermostat
opening), anti-freeze or "chimney sweep" request, the pump (M1) is kept working for a
period of 60 seconds.
Sealed chamber post-ventilation
The combustion chamber is washed after switch-off of the burner at the end of any request
and the fan works for 55 seconds at minimum set speed.
Sealed chamber post-ventilation following overheating safety block intervention
After burner switch-off following an overheating block (water or fumes), the fan is made to
work for 600 seconds (10 min) at maximum set speed in order to dispose of the residual
heat.
Breakage of the NTC flow
probe (B1)
Breakage of the NTC DHW
probe (B2)
(version kW X optional)
Breakage of the CH flow probe (B1) prevents functioning in central heating and domestic
hot water modes.
The intervention is signalled with the error code 05 on the boiler control panel.
The breakage of the DHW probe (B2) is signalled on the boiler control panel display with
the relative error code (06 for instant boilers and 12 for boilers with storage tank). The boiler
however continues to function in DHW mode.
Fan safety speed
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 intervention is signalled with the error code 16 on the boiler control panel.
The main selector switch (S2) must be turned to the Reset position in order to restore
functioning of the appliance.
Flow over-heating ventilation
To prevent overheating of the water-gas heat exchanger, if the boiler temperature detected
by the NTC flow probe (B1) exceeds 105 °C, the fan is made to work until the temperature
drops below 100 °C.
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VICTRIX 24 kW Export
Technical Documentation
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Fault and anomaly signals.
The VICTRIX kW boiler signals the functioning status of the
appliance by symbols on the digital display and any anomaly
by the flashing relative error code.
Key of control panel display symbols
Description
Symbol
Numerical characters to indicate temperature,
any error code or optional external probe temperature correlation factor
Degrees symbol
External probe connection symbol
Connection to Comando Amico Remoto
remote control symbol
Summer symbol (production of DHW only)
Winter symbol (production of DHW and room
central heating)
DHW production phase symbol active
Room central heating active phase symbol
Chimney sweep function symbol
Anomaly presence symbol (coupled to error
code)
Flame presence symbol
Burner power scale symbol
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VICTRIX 24 kW Export
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Functioning anomaly signalled
Flashing Code
Remote display
Ignition block
01
E01
Safety thermostat block (overheating), flue thermostat or flame
control anomaly
02
E02
NTC flow probe anomaly
05
E05
Domestic hot water NTC probe anomaly (for instant boilers)
06
E06
Reset selector switch fault
08
E08
Calibration function active (displayed only on CAR)
E09
Insufficient system pressure
10
E10
Cylinder probe anomaly (for boilers with cylinder)
12
E12
Configuration error *
15
E15
Fan anomaly
16
E16
Parasite flame block *
20
E20
Insufficient circulation
27
E27
CAR offline or not compatible anomaly
31
E31
Low power supply voltage *
37
* (Serial number 3731157)
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VICTRIX 24 kW Export
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VICTRIX 24 kW functioning sequence.
CH mode
DHW mode
Voltage applied
Main selector switch in winter position
Voltage applied
Main selector switch in summer or winter position


Enabling of integrated P.C.B. functioning
The closure of the main selector switch contacts (winter
position) enables the functioning in central heating mode
Enabling of integrated P.C.B. functioning
The closure of the main selector switch contacts (summer
position) enables the functioning in DHW mode


Closure of room thermostat switch/CAR functioning
request
Request of the room thermostat or the CAR (if mounted)
detects conditions that require functioning in CH mode
Closure of the DHW flow switch
Withdrawal of DHW


Pump and 3-way valve power supply
The integrated P.C.B. powers the boiler pump and the electric 3-way valve. The valve is taken to the CH position
Pump and 3-way valve power supply
The integrated P.C.B. powers the boiler pump and the electric 3-way valve. The valve is taken to the DHW position

Closure of system pressure switch micro switch
The pressure in the primary circuit that is higher than the minimum cut-off value causes the closure of the system pressure
switch contact

Fan power supply
The integrated P.C.B. powers the fan

Ignition electrodes power supply
The integrated P.C.B. powers the ignition electrode by means of the ignition sub-unit.

Gas valve coil power supply
With the consent of the overheating safety thermostat and the flue safety thermostat, the integrated P.C.B. powers the gas
valve coils

Burner ignition (slow)
The integrated P.C.B. keeps the fan functioning at the ignition speed

Flame detection
The integrated P.C.B. detects burner ignition by means of the ionisation electrode

Boiler operating
The burner functions at a variable power depending on the type of request, the adjustments/settings made and the temperatures detected by the NTC probes
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VICTRIX 24 kW Export
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Technical Data.
VICTRIX 24 kW technical data.
Domestic hot water nominal heating power
Central heating nominal heating power
Minimum heat input
Domestic hot water nominal heat output (useful)
Central heating nominal heat output (useful)
Minimum heat output (useful)
Efficiency 80/60 Nom./Min.
Efficiency 50/30 Nom./Min.
Efficiency 40/30 Nom./Min.
Heat loss at casing with burner On/Off (80-60°C)
Heat loss at flue with burner On/Off (80-60°C)
Central heating circuit max. operating pressure
Central heating circuit max. operating temperature
Adjustable central heating temperature Pos 1
Adjustable central heating temperature Pos 2
System expansion vessel total volume
Expansion vessel factory-set pressure
Water content in generator
Total head available with 1000/h flow rate
Hot water production useful heat output
Domestic hot water adjustable temperature
Domestic hot water circuit flow limiter at 2 bar
Min. pressure (dynamic) domestic hot water circuit
Domestic hot water circuit max. operating pressure
*Flow rate “D” according to EN 6625
Continuous flow rate (∆T 30°C)
Weight of full boiler
Weight of empty boiler
Power supply connection
Power input
Installed electric power
Pump consumption
Fan consumption
Equipment electrical system protection
NOX class
Weighted NOX
Weighted CO
kW (kcal/h)
26,4 (22701)
kW (kcal/h)
24,3 (20914)
kW (kcal/h)
4,9 (4210)
kW (kcal/h)
26,0 (22360)
kW (kcal/h)
24,0 (20640)
kW (kcal/h)
4,7 (4042)
%
98,7 / 96,0
%
106,5 / 106,0
%
107,0 / 107,0
%
0,05 / 1,50
%
0,15 / 2,00
bar
3
°C
90
°C
25 - 85
°C
25 - 50
l
5,7
bar
1
l
3,4
20,50 (2,09)
kPa (m H2O)
kW (kcal/h)
26,0 (22360)
°C
30 - 60
l/min
7,0
bar
0,3
bar
10
l/min
12,4
l/min
12,8
kg
48,4
kg
45,0
V/Hz
230/50
A
0,6
W
130
W
78
W
23
IPX4D
5
mg/kWh
37
mg/kWh
58
C13 / C23 / C33 / C43 / C53 / C83 / B23p
/ B33p
II2H3B/P
Type of appliance
Category
- The flue temperature values refer to the inlet air temperature of
15°C and flow temperature of 50° C.
- The data relative to the DHW performance refer to a dynamic input
pressure of 2 bar and an input temperature of 15°C; the values are
detected immediately on exit from the boiler considering that to
obtain the data declared it must be mixed with cold water.
- The maximum sound pressure emitted during boiler functioning
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is < 55dBA. The measurement of the sound pressure refers to tests
in a semi-anechoic chamber with boiler functioning at maximum
heat output, with extension of the flue system according to product
standards.
- * Flow rate “D”: DHW flow rate corresponding to an average
temperature increase of 30 K, which the boiler can supply in two
consecutive withdrawals.
45
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
VICTRIX 24 kW X technical data.
D.h.w. nominal heat input (optional)
C.H. nominal heat input
Minimum heat input
D.h.w. nominal heat output (working) (optional)
C.H. nominal heat output (working)
Minimum heat output (working)
Working heat performance 80/60 Nom./Min.
Working heat performance 50/30 Nom./Min.
Working heat performance 40/30 Nom./Min.
Loss of heat at shell with burner Off/On (80-60°C)
Loss of heat at stack with burner Off/On (80-60°C)
26.4 (22701)
24.3 (20914)
4.9 (4210)
26.0 (22360)
24.0 (20640)
4.7 (4042)
98.7 / 96.0
106.5 / 106.0
107.0 / 107.0
0.05 / 1.50
0.15 / 2.00
kW (kcal/h)
kW (kcal/h)
kW (kcal/h)
kW (kcal/h)
kW (kcal/h)
kW (kcal/h)
%
%
%
%
%
Gas nozzle diameter
Supply pressure
mm
mbar (mm H2O)
G20
5.30
20 (204)
G30
3.85
29 (296)
bar
°C
°C
°C
l
bar
l
kPa (m H2O)
l/min
l/min
l/min
l/min
l/min
kg
kg
3
90
25 - 85
25 - 50
5.7
1.0
3.4
20.50 (2.09)
20.2
22.0
25.3
35.9
12.8
45
48.3
Electrical connection
Rated power input
Installed electrical power
Power absorbed by the circulator
Power absorbed by the fan
Appliance electrical system cutout
V/Hz
A
W
W
W
-
230/50
0.60
130
78
23
IPX4D
Rated power fume mass flow
Minimum power fume mass flow
CO2 at Q. Nom./Min.
CO at 0% of O2 at Q. Nom./Min.
NOX at 0% of O2 at Q. Nom./Min.
Fumes temperature at nominal output (50/30)
Fumes temperature at minimum output (50/30)
kg/h
kg/h
%
ppm
ppm
°C
°C
Max. operating pressure of the heating circuit
Max operating temperature of the heating circuit
Adjustable heating temperature (range 1)
Adjustable heating temperature (range 2)
Total volume of the heating expansion vessel
Heating expansion vessel preload
Boiler water content
Available head with a flow rate of 1000 l/h
*Specific flow “D” Immergas ST 80 litres (∆T 30°C) according to EN 625
* Specific flow “D” Immergas ST 105 litres (∆T 30°C) according to EN 625
* Specific flow “D” Immergas ST 120 litres (∆T 30°C) according to EN 625
* Specific flow “D” Immergas ST 200 litres (∆T 30°C) according to EN 625
Continuous flow rate capacity with Immergas ST (∆T 30°C)
Full boiler weight
Empty boiler weight
G20
Max. temperature of exhaust gases
NOX class
NOX weighted
CO weighted
Type of appliance
G30
G31
35
40
7
8
12.25 / 11.9 10.45 / 10.2
575 / 7
180 / 5
80 / 27
20 / 15
60
55
52
48
°C
75
mg/kWh
mg/kWh
5
37
58
B23 / B33 / C13x / C33x / C43x / C53x / C83x
Category
II2H3+
- The maximum sound level emitted during boiler operation is <
55dBA. The sound level value is referred to semianechoic chamber
tests with boiler operating at max. heat output, with extension of
fume exhaust system according to product standards.
- Fume temperature values refer to an air inlet temperature of
15°C.
- The data relevant to domestic hot water performance refer to a
dynamic inlet pressure of 2 bar and an inlet temperature of 15°C;
the values are measured directly at the boiler outlet considering that
to obtain the data declared mixing with cold water is necessary.
STVkW ed 07/08
40
8
9.35 / 8.9
195 / 5
20 / 9
54
47
G31
3.85
37 (377)
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VICTRIX 24 kW Export
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VICTRIX 24 kW / 24 kW X combustion parameters
Gas nozzle diameter
supply pressure
Flue flow rate at max heat output
Flue flow rate at min heat output
CO2 at Nom Q./Min.
CO with 0% O2 at Nom Q /Min.
NOX with 0% O2 at Nom Q /Min.
Flue temperature at nominal output
Flue temperature at minimum output
mm
mbar (mm H2O)
kg/h
kg/h
%
ppm
ppm
°C
°C
G20
5,30
20 (204)
42
8
9,40 / 8,90
195 / 5
20 / 9
56
48
G30
3,85
29 (296)
37
7
12,25 / 11,90
575 / 7
80 / 27
62
54
G31
3,85
37 (377)
43
8
10,40 / 10,20
180 / 5
20 / 15
56
49
VICTRIX 24 kW / 24 kW X variable heat output.
METHANE (G20)
HEAT OUT- HEAT OUTPUT
PUT
(kW)
(kcal/h)
26,0
22360
25,0
21500
24,0
BURNER GAS
FLOW RATE
BUTANE (G30)
PRESS. BURNER
NOZZLES
BURNER GAS
FLOW RATE
PROPANE (G31)
PRESS. BURNER
NOZZLES
BURNER GAS
FLOW RATE
PRESS. BURNER
NOZZLES
(m3/h)
(mbar)
(mm H2O)
(kg/h)
(mbar)
(mm H2O)
(kg/h)
(mbar)
(mm H2O)
2,79
7,80
79,5
2,08
8,07
82,3
2,05
9,14
93,2
2,68
7,22
73,7
2,00
7,43
75,7
1,97
8,40
85,6
20640
2,57
6,67
68,0
1,92
6,81
69,4
1,89
7,69
78,4
23,0
19780
2,46
6,15
62,7
1,84
6,23
63,5
1,81
7,02
71,6
22,0
18920
2,36
5,64
57,5
1,76
5,67
57,8
1,73
6,38
65,1
21,6
18543
2,31
5,43
55,4
1,72
5,44
55,4
1,70
6,12
62,4
20,0
17200
2,14
4,70
48,0
1,60
4,65
47,4
1,57
5,21
53,2
19,0
16340
2,04
4,27
43,5
1,52
4,18
42,6
1,49
4,68
47,7
18,0
15480
1,93
3,85
39,3
1,44
3,74
38,1
1,42
4,17
42,5
17,0
14620
1,82
3,46
35,3
1,36
3,32
33,9
1,34
3,70
37,7
16,0
13760
1,72
3,08
31,4
1,28
2,94
29,9
1,26
3,26
33,2
15,0
12900
1,61
2,73
27,8
1,20
2,57
26,3
1,18
2,84
29,0
14,0
12040
1,51
2,39
24,4
1,12
2,24
22,8
1,11
2,46
25,1
13,0
11180
1,40
2,08
21,2
1,05
1,93
19,6
1,03
2,11
21,5
12,0
10320
1,30
1,78
18,2
0,97
1,64
16,7
0,95
1,78
18,2
11,0
9460
1,19
1,50
15,3
0,89
1,38
14,1
0,87
1,49
15,2
10,0
8600
1,08
1,24
12,7
0,81
1,14
11,7
0,80
1,22
12,4
9,0
7740
0,98
1,00
10,2
0,73
0,93
9,5
0,72
0,98
10,0
8,0
6880
0,87
0,78
8,0
0,65
0,75
7,6
0,64
0,77
7,9
7,0
6020
0,77
0,58
5,9
0,57
0,59
6,0
0,56
0,59
6,0
6,0
5160
0,66
0,40
4,1
0,49
0,45
4,6
0,48
0,44
4,5
5,0
4300
0,55
0,23
2,4
0,41
0,34
3,5
0,40
0,32
3,3
4,7
4042
0,52
0,19
1,9
0,39
0,31
3,2
0,38
0,29
3,0
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D.H.W.
CENT
HEAT.
+
DHW.
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
List of VICTRIX 24 kW accessories and optionals.
Super Comando Amico Remoto remote control
code 3.016577
Comando Amico Remoto remote control
code 3.011236
Telephone control
code 3.013305
External Probe
code 3.014083
Digital weekly timer-thermostat
code 3.014438
Radio timer-thermostat (wireless)
code 3.014439
GSM telephone control kit
code 3.017182
Relay interface kit (for zone valve coupling)
code 3.017331
Zones control unit kit
code 3.011668
Additional system expansion vessel kit (2 litres)
code 3.017514
Connection unit kit.
code 3.017494
Top cover kit
code 3.017330
Polyphosphate dispenser kit (indoor only)
code 3.017323
Anti-freeze electric resistance kit (-15°C)
code 3.017324
Cut-off cocks kit
code 3.5324
Cut-off cocks with filter kit
code 3.015854
System cut-off kit
code 3.016301
The boiler is prepared for coupling to the DIM (multi-system distribution manifold), available in 5 recess kits.
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VICTRIX 24 kW Export
Technical Documentation
Technical Documentation
List of VICTRIX 24 kW X accessories and optionals.
Super Comando Amico Remoto remote control
code 3.016577
Comando Amico Remoto remote control
code 3.011236
Telephone control
code 3.013305
External Probe
code 3.014083
Digital weekly timer-thermostat
code 3.014438
Radio timer-thermostat (wireless)
code 3.014439
GSM telephone control kit
code 3.017182
Relay interface kit (for zone valve coupling)
code 3.017331
Zones control unit kit
code 3.011668
Additional system expansion vessel kit (2 litres)
code 3.017514
Storage tank unit coupling kit
code 3.017500
Connection unit kit.
code 3.017495
Anti-freeze electric resistance kit (-15°C)
code 3.017324
Top cover kit
code 3.017330
Cut-off cocks kit
code 3.5324
Cut-off cocks with filter kit
code 3.015854
Column attachment kit (UB 105 and UB 200)
code 3.017325
The boiler is prepared for coupling to the DIM (multi-system distribution manifold), available in 5 recess kits.
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