Immergas VICTRIX 50 Manuel utilisateur

VICTRIX 50

Caldaie murali

a condensazione solo riscaldamento

predisposte per bollitore esterno

VICTRIX 50

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.

Technical Documentation Technical Documentation

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

Technical DocumentationTechnical Documentation

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.

Technical Documentation Technical Documentation

STV50 ed 09/08 VICTRIX 50 Rev. 002

VICTRIX 50 Control Panel.

Legend:

1- Main switch

2- User interface display

3- Boiler manometer

Technical DocumentationTechnical Documentation

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.

Technical Documentation Technical Documentation

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)

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)

Flow Litres/h

Head (H2O)

Technical DocumentationTechnical Documentation

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).

System

delivery

System

return

Condensate

discharge

Flue

System

delivery

Technical Documentation Technical Documentation

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).

Technical DocumentationTechnical Documentation

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