Immergas Victrix Zeus 25 User manual

Customer Service
VICTRIX ZEUS 25
Condensing wall hung boiler with built-in storage tank
➢VICTRIX ZEUS 25
20 kW for CH; 25 kW for DHW
➢VICTRIX ZEUS 32
28 kW for CH; 32 kW for DHW

Customer Service
➢Main features
➢Hydraulic circuit
➢Gas and flue circuit
➢Control panel
➢Electronic board and parameters setting
➢Calibration
➢Main options
VICTRIX ZEUS

Customer Service
Main features
➢Stainless steel primary heat exchanger with aluminum shell
➢45 liters stainless steel storage tank
➢Advanced electronics - Capable to fit any gases changing PCB parameters
➢Electronic gas valve
➢Modulation range from 14÷100%
➢Low consumption modulating pump
➢ICHS hydraulic group, 3-way valve with stepper motor
➢DHW expansion vessel (2 litres)
➢Control panel with digital display - Electric control box
➢IPX5D electrical insulation
➢Ecofriendly - low NOx emissions (class 6)
➢“Green series” flue pipe for condensing boilers
➢Remote control via Smartphone o Tablet (DOMINUS)
➢Prearranged for the connection with following optional:
- CARV2; CARV2 wireless
- External probe
- DIM ErP, Multi-zones control board and relay board kit

Customer Service
Energy label

Customer Service
Dimensions and connections
Height
(mm)
Width
(mm)
Depth
(mm)
900 580 410
Connections
Gas DHW System
GAC AF R M
3/4"
1/2"
1/2" 3/4" 3/4"
Key:
V - Voltage supply
G - Gas supply
SC - Condensate drain (min. Ø13 mm)
R - System return
M - System delivery
RC - DHW recirculation pump (optional)
AC - DHW outlet
AF - DHW inlet

Customer Service
Key:
1 - Filling valve system
2 - Draining valve system
3 - Bypass
4 - 3-way valve (motorised)
5 - 3 bar safety valve
6 - Gas valve
7 - Boiler pump
8 - Air intake pipe
9 - Flow probe
10 - Return probe
11 - Air / gas manifold
12 - Flue probe
13 - Flue gas sample points (air-flue gas )
14 –DHW expansion vessel
15 - System expansion vessel
16 - Condensation module
17 - Burner
18 - Ignition/detection electrodes
19 - Fan
20 - Air / gas mixer
21 - Gas nozzle
22 - D.H.W. probe
23 - Air vent valve
24 - Stainless steel storage tank
25 - System pressure switch
26 - Condensate drain trap
27 - Control panel
28 - 8 bar safety valve
29 - Storage tank draining fitting
Main components

Customer Service
Electrical connections
Removing the aesthetic frame and the cover, it is possible to access to the external electrical
connection of the PCB.
38-39 External probe
14-15 Safety thermostat Low temp.
44-41 CARV2
40-41 Room thermostat
21 State signal
Electrical supply
230Vac 50Hz

Customer Service
➢Main features
➢Hydraulic circuit
➢Gas and flue circuit
➢Control panel
➢Electronic board and parameters setting
➢Calibration
➢Main options
VICTRIX ZEUS

Customer Service
Hydraulic circuit
Key:
1 - Gas valve
2 - Condensate drain trap
3 - 3 bar safety valve
4 - System draining cock
5 - System expansion vessel
6 - Air / gas mixer
7 - Fan
8 - Return probe
9 - Ignition/detection electrode
10 - Flue probe
11 - Flue hood
12 - Flue sample point
13 - Air sample point
14 - Burner
15 - Air / gas manifold
16 - Flow probes
17 - Air intake pipe
18 - Air vent valve
19 - Boiler pump
20 - System pressure switch
21 - Stainless steel storage tank
22 - Magnesium anode
23 - 3-way valve (motorised)
24 - Domestic hot water expansion vessel
25 - D.H.W. probe
26 - Stainless steel coil for storage tank
27 - 8 bar safety valve
28 - Cold water inlet non-return valve
29 - Storage tank draining valve
30 - System filling cock
31 - Bypass

Customer Service
New primary heat exchanger with stainless steel single coil and aluminium shell
➢No manifolds
➢Internal section wide and constant
➢High water flow
➢Frontal access for servicing
Condensing module

Customer Service
Condensing module
N°
DESRIPTION
MATERIAL
1
Upper
half-shell
Alluminium
2
FRONT flange
Alluminium
3
SPIRAL
Steel
4
Rear
insulation
Vermiculite
5
Rear
deflector
Alluminium
6
Hydraulic
connections
XYRON
7
Lower
half-shell
Alluminium

Customer Service
PROTECTIVE
TREATMENT
➢To protect the inside of the aluminum module casing from the condensate connection, the rear
deflector and the lower half-shell are treated with a PTFE (Teflon) coating process:
➢The rear deflector is covered throughout the surface facing outwards from the combustion chamber,
so as to resist the attack of the condensate that may come from the flue gas discharge pipe;
➢The lower half-shell is treated on the inside, as it collects all the condensate produced
Condensing module

Customer Service
•Increase in useful power by varying only the height of the coil tube, the external
dimensions are the same for the different powers dimensional compactness;
•The large and constant internal section allows you to limit deposits, with less risk
of clogging in the presence of impurities in the water;
•Low hydraulic pressure drops (no restrictions).
Condensing module

Customer Service
Same shelle dimensions for both echanger (25 kW and 32 kW), baut with
different coil height.
The height of the
tube reduces the
space between
the shell
and the coil
25 kW
32 kW
Condensing module

Customer Service
25 kW 32 kW
The module have the same external dimension for both exchanger (25 kW e32 kW)
but different length of coil.
Different colour:
Black for 25 kW
Grey for 32 kW
Condensing module

Customer Service
Hydraulic group
Pump group in composite material designed in collaboration with Grundfos
Low consumption modulating
circulator 6mwc
3 bar relief
valve
Automatic air vent
valve
3-way valve motor
System by-pass Filling
valve

Customer Service
Double NTC probe
Functions related to ΔT between flow and return probe:
1. Proportional power limitation
ΔT = 30°C →Proportional power limitation ON
ΔT = 40°C →Maximum power limitation (boiler works at minimum power)
Not enabled during “chimney sweep” mode
2. High ΔT between the flow and return probes (E45)
Function enabled only during a request in every functioning mode
ΔT > 40°C →Burner OFF, circulator ON
ΔT < 38°C →Burner ON, circulator ON
3. Overheating (E02)
It occurs when one of the probes reach 105°C.

Customer Service
Flow rate l/min.
Circulator graphic –ZEUS 25
A+B = Available head to the system with closed by-pass
B = Available head to the system with opened by-pass
C+D = Absorbed power with opened by-pass
D = Absorbed power with closed by-pass
Head (kPa)
Circulator pump absorbed power (W)

Customer Service
Circulator graphic –ZEUS 32
Flow rate l/min.
A+B = Available head to the system with closed by-pass
B = Available head to the system with opened by-pass
C+D = Absorbed power with opened by-pass
D = Absorbed power with closed by-pass
Circulator pump absorbed power (W)
Head (kPa)

Customer Service
In DHW mode the pump always runs at maximum speed.
In heating mode, the pump speed can be set in 3 different ways by changing the
parameters A3, A4 and A5:
➢FIXED SPEED
setting parameter A3 and A4 to the same value
➢CONSTANT ΔT (Standard, parameter A5=15)
the circulating pump automatically works at the proper speed in order to keep
constant the difference in temperature (ΔT) between flow and return (default
ΔT 15 ºC, settable from 5 to 25 ºC - Parameter A5).
➢PROPORTIONAL (parameter A5=0)
the circulating pump automatically change its speed according to the burner
power.
Max power →Max speed
Min power →Min speed
Modulating pump