Immergas VICTRIX 50 User manual

VICTRIX 50
Caldaie murali
a condensazione solo riscaldamento
predisposte per bollitore esterno
VICTRIX 50

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STV50 ed 09/08 VICTRIX 50 Rev. 002
VICTRIX 50
Condendensing wall-hung open chamber
fan assisted or room-sealed fan-assisted
boiler for central heating only
VICTRIX 50
VICTRIX 50 is a condensing wall-hung open chamber fan
assisted or room-sealed fan assisted boiler for central heating
only. With a special kit (optional) this boiler can be combined
with an external storage tank for the production of domestic
hot water with capacities of 80, 105, 120 and 200 litres.
e boiler is approved for installation both inside a heating
station and outside the building and can be installed single or
in cascade by which we mean the installation of a maximum
of 3 boilers in battery on the same system.
Special hydraulic kits are available as optionals to complete
the installation such as the ISPESL safety kit, the distribu-
tion manifold with lter kit, the 3-way diverter valve kit for
coupling the storage tank and the hydraulic manifolds kits for
connecting two or three boilers in cascade.
anks to the condensation technology, VICTRIX 50 is distin-
guished for its high operating performance and wide modula-
tion range (from 20 % to 100 % of its nominal output).
e boiler has a heat output of 50 kW (43,000 kcal/h) and
features an innovative total premix combustion system that
ensures minimal pollution emissions. It can work with natural
gas or LPG.
e appliance is regulated and controlled by means of a mi-
croprocessor controlled p.c.b. which, via a display, shows the
General features.
state of boiler operation (temperatures, safety devices, etc.). e
hydraulic circuit features a water-gas coil exchanger stainless
steel made.
All boilers are tted with an antifreeze device for temperatures
of -5 °C.
e VICTRIX 50 boiler must be installed using specic ue
kits (green series) made in plastic and especially for the VIC-
TRIX 50 boiler whether it is installed in a single conguration
or in a battery (up to a maximum of 3 boilers).
e plastic (80 mm Ø exible) ducting ue system can also be
used, designed specically for Immergas condensing boilers.
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STV50 ed 09/08 VICTRIX 50 Rev. 002
VICTRIX 50 main dimensions.
Legend:
V - electrical connection
G - Gas supply
R - System return
M - System delivery
SC - Condensate discarge (minimum
internal diameter 13 mm Ø)
Height (mm) Width (mm) Depth (mm)
950 600 525
Connections
GAS SYSTEM
G R M
3/4” 1”1/2 1”1/2
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STV50 ed 09/08 VICTRIX 50 Rev. 002
Legend:
1 - P.C.B.
2 - Flow manifold
3 - System pressure switch
4 - Air intake pipe
5 - Fan
6 - Gas nozzle
7 - Venturi
8 - Detection electrode
9 - Cover of condensing module
10 - Sleeve with Venturi housing
11 - Condensing module
12 - Air/ue sample points (air A) - (fumes F)
13 - Flue hood
14 - System return NTC probe
15 - Flue safety thermostat
16 - Manual vent valve
17 - System ow NTC probe
18 - Overtemperature safety thermostat
19 - Ignition plug
20 - Burner
21 - Current transformer
22 - Automatic vent valve
23 - Pump
24 - Condensate syphon
25 - Gas valve
26 - 4-bar safety valve
27 - Drain funnel
(from the serial number 3918687)
VICTRIX 50 main components.
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STV50 ed 09/08 VICTRIX 50 Rev. 002
VICTRIX 50 Control Panel.
Legend:
1- Main switch
2- User interface display
3- Boiler manometer
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STV50 ed 09/08 VICTRIX 50 Rev. 002
Legend:
1 - Transparent funnel outlet
2 - ISPESL-approved 4 bar safety valve
3 - Boiler unloading cock
4 - System pressure switch (absolute)
5 - Flow manifold
6 - Condensate siphon
7 - Gas valve
8 - Air intake pipe
9 - Air fan
10 - Gas nozzle
11 - Detection electrode
12 - Condensing module cover
13 - Condensing module
14 - Flue safety thermostat
15 - Flue hood
16 - Air sample point
17 - Flue sample point
18 - System ow adjusting probe
19 - Manual vent valve
20 - System return adjusting probe
21 - Overheating safety thermostat
22 - Ignition electrode
23 - Burner
24 - Venturi positive signal (P1)
25 - Air/gas Venturi manifold
26 - Automatic vent valve
27 - Pump
M - System delivery
SC - Condensate discharge
G - Gas supply
R - System return
(from the serial number 3918687)
VICTRIX 50 hydraulic circuit.
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STV50 ed 09/08 VICTRIX 50 Rev. 002
Primary circuit (boiler circuit).
e primary circuit with relevant control and safety devices
is triggered each time there is a request for central heating
or antifreeze.
Operation.
e heat contained in the ue produced by combustion is ab-
sorbed by the pipes of the coil water-gas exchanger tted in the
condensation module (13), which, in turn, transfers it to the
water circulating inside thanks to the boiler circulator (28).
Flow-head graph.
e trend of the curve that represents the ow-head ratio
depends on circulator speed.
A = Head available to the system at maximum single boiler speed
B = Head available to the system at second single boiler speed
C = Head available to the system at maximum speed with check valve for boilers in cascade (battery)
D = Head available to the system at second speed with check valve for boilers in cascade (battery)
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Circulator.
e circulator works on the primary circuit return and is it
physically coupled to the components supporting plate.
A threaded tting on the body is used to x the automatic air
vent (1) directly.
Head (kPa)
A
Flow Litres/h
B
C
D
Head (H2O)
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STV50 ed 09/08 VICTRIX 50 Rev. 002
Primary exchanger (condensation module).
It consists of a casing containing 11 coil shaped elements.
Each element is made of 5 elliptic pipe spirals (3).
e whole module is made of stainless steel and the inner part
comprises a sealed combustion chamber and condensation
chamber (2).
e rst eight elements are involved directly in the action of the
cylindrical burner, tted to the front, while the last three are
inside the condensation chamber which is separated from the
combustion chamber by a metal plate (see the ue circuit).
To minimise load losses and increase the ow available for
the system, the delivery consists of the parallel connection of
the rst six elements while the return consists of the parallel
connection of the last ve elements.
e exchanger inlet is connected to the boiler circulator deliv-
ery on which the system return NTC probe is positioned (5)
while the outlet, on which the system delivery (6) NTC probe
is positioned, is connected to the primary circuit delivery.
readed ttings and a at seal are used to couple the delivery
and return pipes of the primary circuit.
e overheating safety thermostat (1) is installed on the system
delivery pipe.
e draught diverter (4) is connected at the back by means of
a seal locked by a metal ring.
e condensate drain is also found in the lower part.
To ease the escape of any air bubbles still present in the coils,
there is a manual air vent (7) in the upper part of the mod-
ule.
Safety devices and controls.
System pressure switch (2).
is switch detects the pressure inside the primary circuit.
It is housed on the delivery manifold body and coupled to a
microswitch that prevents the burner working when pressure
is below 0.3 bar.
It prevents the main exchanger from overheating.
ISPESL type approved 4 bar safety valve (3).
It prevents the safety pressure from being exceeded in the
circuit (4 bar).
It is located at the front of the delivery manifold body to
which it is coupled.
When this valve trips it causes water to come through the sys-
tem delivery pipe to which an extension pipe (4) is connected
that ends with a collection funnel (5).
5
2
3
4
1
1
4
6
5
2
3
7
System
delivery
System
return
Condensate
discharge
Flue
System
delivery
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STV50 ed 09/08 VICTRIX 50 Rev. 002
Air-gas circuit.
e circuit consists of a total pre-mix combustion system
comprising a fan (7), a pneumatic type gas valve (9), a Venturi
pipe (5) and a special cylindrical burner (4) that works inside
the condensation module.
Operation.
e fan (7) is controlled by the microprocessor driven p.c.b.
that varies speed according to the output required.
By means of this fan, combustion air is taken from the draught
diverter (3), which is in contact with outside and sent through
a duct where a Venturi pipe (5) is installed.
A positive pressure signal (P1) is located at the Venturi (5) inlet
and varies in a way directly proportional to the quantity of air
extracted by the fan (7) and which is detected by means of a
pressure point connected to the pneumatic gas valve (9).
e energising of the main valve coils causes both internal
shutters to open and the gas to ow through, whose outlet
pressure is regulated by the same pneumatic valve with a 1:1
ratio at pressure “P1”.
rough nozzle (6), gas is injected at the inlet of the Venturi
pipe (5) where pre-mixing begins with the combustion air.
e resulting mix is ignited on the cylindrical burner surface
(4) by a spark of the ignition electrodes (10).
Gas valve.
e gas valve features two main coils controlled by the inte-
grated board and a pneumatic control unit that modulates the
exiting gas pressure at a 1:1 ratio at pressure (P1) detected at
the Venturi pipe inlet.
e ratio between air and gas pressures (o-set) are set on this
valve (see gas regulations).
Electrical coils (4).
Two ON-OFF type coils that are powered by the integrated
board (24 V DC) when the burner has to be ignited.
ey are connected in series and energised at a voltage of 24
V through a connector (3).
Pneumatic unit (2).
Outlet pressure can be varied with this unit at a 1:1 ratio at
pressure (P1) detected at the Venturi pipe inlet which is re-
turned to the valve through a silicone pipe (1).
anks to this system, the percentages in the air-gas mix remain
constant at optimum values on the entire modulation eld thus
ensuring an almost constant combustion performance.
By means the o-set screw (2) the air-gas ratio can be adju-
sted.
is is only necessary if, after having analysed the ue,
incorrect combustion values are found (see air-gas ratio ad-
justment).
1
2
3
4
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