Immergas VICTRIX ZEUS 20 Manuale utente
VICTRIX Zeus
Condensation-type wall-hung
room sealed fan-assisted boiler
with stainless steel storage tank.
VICTRIX Zeus
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Technical Documentation
Technical Documentation
VICTRIX ZEUS
Condensation-type wall-hung room sealed
fan-assisted boiler with Gaudium Ma-
gnum device.
VICTRIX Zeus 20
VICTRIX Zeus 27
General features.
VICTRIX Zeus is a condensation-type wall-hung room sea-
led fan-assisted boiler featuring a “Gaudium Magnum” devi-
ce for fully exploiting the characteristics of this 54 l boiler in
Aisi 316L stainless steel.
ere are two versions in the range with working outputs of
23.5 kW (20210 kcal/h) and 31.4 kW (27000 kcal/h) and
both feature an innovative total premix combustion system
that ensures very low pollutant emissions and enables the boi-
ler to run on natural gas and LPG.
e high energy output has been awarded the 4-star mark
(´´´´) in conformity with P.D. 660/96.
e appliance is regulated and controlled by means of a prin-
ted microprocessor control board which, through a monitor,
displays the state of boiler operation (temperature, safety devi-
ces, etc.) and enables it to be connected (optional) to the Ami-
co Remote Control, to the area unit and to the Multisystem
Water Disconnector.
e hydraulic circuit features a coil water-gas exchanger in
STAINLESS steel, a 3-way electric valve and a 2 l d.h.w.
expansion vessel.
VICTRIX Zeus must be installed using the aspiration/drai-
nage kit or the piping system (Ø 60 mm rigid and Ø 80 mm
flexible) made of plastic material and expressly conceived for
Immergas condensation boilers.
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Technical Documentation
Technical Documentation
VICTRIX Zeus main dimensions.
VICTRIX Zeus control panel.
Legend:
G - Gas supply
R - System return
M - System delivery
RC - Recirculation (optional)
U - D.h.w. outlet
E - D.h.w. inlet
V - Power connection
S - Condensation runoff (minimum internal
diameter of Ø 13 mm)
Legend:
1 - Heating operating indicator
2 - Heating temperature switch
3 - D.h.w. temperature switch
4 - D.h.w. operating indicator
5 - Switch 0 - D.h.w. and remote control - D.h.w. and heating
6 - Gaudium Magnum operating switch
7 - Gaudium Magnum operating indicator
8 - Storage tank thermometer
9 - Boiler pressure gauge
10 - Reset
11 - Temperature and diagnostic display
12 - Burner operating indicator
Height (mm) Width (mm) Depth (mm)
900 600 450
CONNECTIONS
GAS SYSTEM DOMESTIC
HOT WATER
G R M U E
1/2” 3/4” 3/4” 1/2” 1/2”
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VICTRIX Zeus main components.
Legend:
1 - Intake sockets (air A) - (fumes F)
2 - Fume thermostat
3 - Condensation module lid
4 - Ignition electrodes
5 - Detection electrode
6 - Heating adjustment and limit NTC probe
7 - Sleeve with housing for Venturi
8 - Air inlet pipe
9 - Overtemperature safety thermostat
10 - Air outlet valve
11 - Circulator
12 - Motorised three-way valve
13 - Gas valve
14 - System filling cock
15 - Expansion vessel
16 - Combustion chamber
17 - Stainless steel storage tank 316L
18 - Condensation module
19 - Air fan
20 - Electronic control unit
21 - Maximum flow limit thermostat
22 - D.h.w. NTC probe
23 - Voltage transformer
24 - Water trap syphon
25 - Circulator safety flow switch
26 - System 3-bar safety valve
27 - D.h.w. 8-bar safety valve
28 - Gaudium Magnum device
29 - Storage tank emptying cock
30 - Draught diverter
31 - Positive signal pressure point
32 - Negative signal pressure point
33 - Burner
34 - Gas valve outlet pressure test
35 - D.h.w. expansion vessel
36 - System emptying cock
37 - Adjustable by-pass
(from the serial number 2753798 for VICTRIX Zeus 20)
(from the serial number 2731813 for VICTRIX Zeus 27)
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Hydraulic circuit.
Legend:
1 - Storage tank emptying valve
2 - One way valve
3 - Stainless steel coil for storage tank
4 - Water trap syphon
5 - Stainless steel storage tank 316L
6 - Magnesium anode
7 - Gas valve
8 - Gas valve outlet pressure point (P3)
9 - Air fan
10 - Gas nozzle
11 - Detection electrode
12 - Burner
13 - Condensation module lid
14 - Condensation module
15 - Fume thermostat
16 - Draught diverter
17 - Air analyser trap
18 - Fume analyser trap
19 - ∆p gas pressure point
20 - Heating adjustment and limit NTC probe
21 - Ignition electrode
22 - Air inlet pipe
23 - Venturi air/gas manifold
24 - Venturi negative signal (P2)
25 - Venturi positive signal (P1)
26 - Max drawing limit thremostat
27 - Overtemperature safety thermostat
28 - Expansion vessel
29 - Automatic air outlet valve
30 - Circulator
31 - Pump pressure switch microswitch
32 - Pump pressure switch
33 - D.h.w. NTC probe
34 - System emptying cock
35 - Motorised 3-way valve
36 - System filling valve
37 - Adjustable by-pass
38 - 3 bar safety valve
39 - D.h.w. expansion vessel
40 - 8 bar safety valve
41 - Gaudium Magnum device
42 - Cold water inlet filter
G - Gas supply
S - Condensate discharge
U - D.h.w. outlet
E - D.h.w. inlet
R - System return
M - System delivery
(from the serial number 2753798 for VICTRIX Zeus 20)
(from the serial number 2731813 for VICTRIX Zeus 27)
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Technical Documentation
Technical Documentation
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
domestic hot water.
Operation.
e heat contained in the products produced by combustion
is absorbed by the pipes of the coil water-gas exchanger fitted
in the condensation module (14) which, in turn, transfers
this to the water circulating inside thanks to the boiler pump
(30).
When the boiler is working for water heating only, water en-
ters the system directly. is depends on the position of the
3-way electric valve (35) which, depending on the type of
request, permits flow through the flow pipe (M) and return
pipe (R) of the system or else deviates flow through the sto-
rage tank coil (3).
Flow-head graph.
e trend of the curve that represents the flow-head ratio, de-
pends on how the system by-pass is adjusted. Depending on the
position, it provides the system with a higher or smaller head.
e following graph are the curves for every pump speed.
Circulator.
e circulator works on the primary circuit return and it is phy-
sically located on the electric three-way valve brass assembly.
It is connected to the enbloc and primary circuit exchanger by
means of a threaded connecting pieces.
e casing features a threaded union used to directly secure
the automatic release valve (1).
A = Head available to the system on maximum speed with the by-pass
off (adjustment screw fully tightened)
B = Head available to the system on maximum speed (screw tightened
4.5 turns compared to the screw completely loose)
C = Head available to the system on maximum speed with the by-pass
open (adjustment screw completely loose)
A
B
C
A
B
C
A = Head available to the system on maximum speed with the by-pass
off (adjustment screw fully tightened)
B = Head available to the system on maximum speed (screw tightened
4.5 turns compared to the screw completely loose)
C = Head available to the system on maximum speed with the by-pass
open (adjustment screw completely loose)
VICTRIX Zeus 20
VICTRIX Zeus 27
VICTRIX Zeus 20
VICTRIX Zeus 27
1
1
Flow Litres/h
Head (kPa)
Head (m H2O)
Flow Litres/h
Head (kPa)
Head (m H2O)
e hot water for heating and domestic use is produced by
a primary and a secondary (d.h.w.) circuit used according to
needs.
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Primary exchanger
(condensation module).
It consists of a casing containing 5 or 6 coil elements (depend-
ing on the model).
In turn, each element consists of 5 elliptic pipe spirals.
e whole module is made of stainless steel and the inner part
comprises a sealed combustion chamber and condensation
chamber (2).
VICTRIX Zeus 20.
e first four elements are, in fact, involved directly in the ac-
tion of the cylindrical burner, fitted to the front, while the fifth
is located in the condensation chamber which is separated from
the combustion chamber by a metal plate (see fumes circuit).
VICTRIX Zeus 27.
e first five elements are involved directly in the action of the
cylindrical burner, fitted to the front, while the sixth is located
in the condensation chamber which is separated from the
combustion chamber by a metal plate (see fumes circuit).
To minimise load losses and increase the flow available for the
system, the delivery consists of the parallel connection of the
first three elements (VICTRIX Zeus 20) or first four elements
(VICTRIX Zeus 27), while the return consists of a parallel
connection of the last two elements.
e exchanger inlet is connected to the pump delivery and the
outlet, on which the NTC heating sensor (1) is positioned, is
connected to the primary circuit delivery.
Connection to the delivery and return pipes of the primary
circuit is of the coupling type with an O ring seal.
e draught diverter (3) is connected at the back by means of
a seal locked by a metal ring.
Condensation is drained from the bottom.
FUMES
CONDENSATION
RUNOFF
DELIVERY
RETURN
3
2
1
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Safety devices and controls.
System adjustable by-pass (6).
is ensures water circulation in the primary circuit (between
delivery and return) even when this is prevented by the high
resistance of the system.
It is mounted on the delivery supply header and it can be
adjusted by means of a screw accessible from the bottom part
of the valve support plate.
System filling unit (5).
is cock is positioned between the boiler circuit and the do-
mestic cold water inlet and makes it possible to pressurise the
heating system.
Downstream of the cock is an one way valve (“2” hydraulic
circuit) that prevents water accidentally passing from the pri-
mary circuit to the water mains (d.h.w. circuit).
Its housing is in the bottom part of the enbloc to which it is
screwed.
No-water pressure switch (2).
is reads the pressure difference at the ends of the circula-
tor.
It is housed on the delivery manifold unit (1) and is coupled
to a microswitch (3) that prevents boiler operation when the
pump is blocked or there is no water in the boiler circuit.
is way overheating of the main exchanger is prevented.
Automatic air vent (7).
For automatic release of any gaseous substances in the boiler
circuit.
It is secured to the pump supply directly on the casing.
3-bar safety valve (4).
is prevents safety pressure being exceeded in the circuit (3
bar).
It is fitted on the front to the outer side by means of a socket-
head screw.
Operation of this valve causes water to exit from the delivery
pipe.
Expansion vessel (8).
Offsets volume changes resulting from water heating thereby
restricting pressure changes.
It has a capacity of 10 l and an 1.0 bar pre-load pressure.
It is located in front of the storage tank in the front section
of the appliance.
System
delivery
7
8
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STVZ ed 02/06 VICTRIX Zeus
Technical Documentation
Technical Documentation
Secondary circuit (domestic hot water circuit).
e d.h.w. circuit is engaged every time the temperature of
the water in the storage tank (2) has to be brought to the
desired value. is is measured by means of the d.h.w. NTC
sensor (9).
is can occur both when d.h.w. drawing is run and to make
good losses caused by heat dispersion.
Operation.
Following a d.h.w. request, the modulation board starts the
boiler pump (7) and drives the motor of the 3-way electric
valve (8).
e consequent movement of the valve in d.h.w. position (see
3-way electric valve operation) causes the return pipe (R) to
close and, at the same time, the opening of access towards the
storage tank coil (4).
is way, circulation is prevented in the heating system, while
it is allowed in the coil (4) which, through its walls, permits
the cold water to absorb the heat from the water in the pri-
mary circuit.
At this stage, the heating function is disengaged because the
production of d.h.w. has priority.
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