Immergas VICTRIX Zeus 26 1 I User manual

VICTRIX Zeus 26 1 I
Condensation-type wall-hung room
sealed fan-assisted boiler with
stainless steel storage tank
VICTRIX Zeus 26 1 I

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Technical Documentation Technical Documentation
VICTRIX Zeus 26 1 I
Wall-mounted, fan-assisted condensing boiler
with domestic hot water storage tank
VICTRIX Zeus 26 1 I
VICTRIX Zeus 26 1 I is a wall-mounted, sealed chamber,
fan-assisted generator (type C) for central heating and the
production of domestic hot water with storage tank.
e VICTRIX Zeus 26 1 I range is type-approved for installa-
tion outside the building in a partially protected place.
N.B.: A partially protected location is one in which the appliance
is not exposed to the direct action of the weather (rain, snow,
hail, etc..).
e boiler can also be installed in the B23 conguration using
the relevant kit (optional).
e appliance is available with useful heat output of 23,6 kW
(20.296 kW in DHW mode) in CH mode and 26 kW (22.360
kcal/h) which, thanks to condensing technology, distinguishes
itself due to its high eciency and large eld of modulation
(from 12 % to 100 % of the nominal heat output).
e boiler has a total premix combustion system that gua-
rantees particularly reduced pollutant emissions and allows
functioning with natural gas or LPG.
e regulation and control are entrusted to a P.C.B. with inte-
grated microprocessor with continuous ame modulation via 2
sensors (DHW and CH), which through a backlit display shows
the functioning state of the boiler (temperatures, safety devices,
etc.) and allows the connection (optional) to the Comando
Amico Remoto remote control, which allows to manage and
control the boiler at a distance easily, to the external probe, to
the relay interface (for coupling to any valves), to the control
unit for area systems and to the Multi-system Distribution
Manifold.
General features.
e boiler has anti-freeze safety device as per standard that
protects it to a minimum temperature of -5°C (optional to
-15°C).
e hydraulic circuit has a water-gas heat exchanger with coil
in STAINLESS STEEL and uses a hydraulic unit composite
material which, as well as the pump and electric 3-way valve
that according to necessity allow boiler water to circulate in
the CH system or in the storage tank coil for the production
of DHW, also houses the hydraulic control devices (absolute
system pressure switch, 3 bar safety valve, system adjustable
by-pass, etc...).
e VICTRIX Zeus 26 1 I boiler must be installed using the
intake/exhaust kits or the ducting systems (Ø 60 mm rigid,
Ø 80 mm rigid and Ø 80 mm exible) realised in plastic and
designed expressly for Immergas condensing boilers.

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Main dimensions ad VICTRIX Zeus 1 I connections
Key:
V - Electrical connection
G - Gas supply
SC - Condensate drain (minimum internal diameter
Ø 13 mm)
R - System return
M - System ow
RC - Domestic hot water pump (optional)
AC - Domestic hot water outlet
AF - Domestic hot water inlet
N.B.: Connection group (Optional)
Height (mm) Width (mm) Depth (mm)
890 580 380
CONNECTIONS
GAS DOMESTIC
HOT WATER SYSTEM
GAC AF R M
1/2” 1/2” 1/2” 3/4” 3/4”

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VICTRIX Zeus 1I control panel
Key:
1 - Boiler status signal display
2 - Stand-by-Domestic water / Remote Control - Domestic water and Heating-Reset Selector
3 - Domestic hot water temperature selector
4 - Central heating temperature selector
5 - Boiler manometer

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VICTRIX Zeus 1I main components
Key:
1 - System lling valve
2 - Condensate drain trap
3 - Gas valve
4 - /way valve (motorised)
5 - 3 bar safety valve
6 - System pressure switch
7 - Boiler pump
8 - Vent valve
9 - Fan
10 - Gas nozzles
11 - Venturi
12 - Detection electrode
13 - Condensation module
14 - Flue safety thermostat
15 - Air intake pipe
16 - Sample points (air A) - (ue gas F)
17 - Negative signal pressure point
18 - Burner
19 - Positive signal pressure point
20 - Manual air vent valve
21 - Ignition electrode
22 - System expansion vessel
23 - Delivery probe
24 - Safety thermostat
25 - Control panel
26 - Domestic hot water probe
27 - Stainless steel storage tank
28 - V8 bar safety valve
29 - Storage tank unit draining valve
30 - System draining valve
N.B.: Connection group (Optional)

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e hot water used for central heating and domestic hot water
is produced via a primary and a secondary circuit (DHW)
which are aected according to necessity.
VICTRIX Zeus 1I hydraulic diagram
Key:
1 - Condensate drain trap
2 - Stainless steel coil for storage tank
3 - Magnesium anode
4 - Stainless steel storage tank
5 - Gas valve
6 - Gas valve outlet pressure point (P3)
7 - Air/gas Venturi manifold
8 - Fan
9 - Gas nozzle
10 - Detection electrode
11 - Flue safety thermostat
12 - Air intake pipe
13 - Condensation module
14 - Manual air vent valve
15 - Flue hood
16 - Air sample point
17 - ∆p gas pressure point
18 - Flue sample point
19 - Delivery probe
20 - Safety thermostat
21 - Burner
22 - Ignition electrodes
23 - Condensation module cover
24 - Venturi negative sign (P2)
25 - Venturi positive sign (P2)
26 - System expansion vessel
27 - Boiler pump
28 - Adjustable by-pass
29 - System pressure switch
30 - System draining valve
31 - ree-way valve (motorised)
32 - Domestic hot water probe
33 - 3 bar safety valve
34 - System lling valve
35 - 8 bar safety valve
36 - Cold water inlet non-return valve
37 - Storage tank unit draining valve
G - Gas supply
SC - Condensate drain (minimum internal
diameter Ø 13 mm)
AC - Domestic hot water outlet
AF - Domestic cold water inlet
R - System return
M - System ow

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Primary circuit (boiler circuit)
e primary circuit, with relative control and safety devices,
is started every time there is a central heating or domestic
hot water request.
Operation (see hydraulic diagram).
e heat contained in the combustion products is absorbed
by the pipes of the water-gas primary heat exchanger with
coil (13) which, then gives the heat up to the water made to
circulate inside the boiler pump (27). e water is introduced
directly into the system or can be diverted inside the storage
tank coil (2).
is depends on the position of the motorised 3-way valve
A = Head available to the plant at third speed (with by-pass excluded)
B = Head available to the plant at third speed (with by-pass inserted)
C = Head available to the plant at second speed (with by-pass excluded)
D = Head available to the plant at second speed (with by-pass inserted)
Head (m c.a.)
VICTRIX Zeus 1I
Head (kPa)
Flow rate Litres/h
A
C
(31), which depending on request, allows ow towards the
system ow (M) and return (R) pipes or causes diversion
towards the coil (2).
Head-ow rate graphics.
e progress of the curve that represents the ow rate-head ratio
available to the system, depends on the functioning speed of the
pump and adjustment of the system by-pass which, according
to the position, allows to set greater or less head on he system.
e graphs below show the characteristic curves.
B
D

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Boiler pump (1).
Operates on the primary circuit return immediately after the
3-way valve to which it is connected. It is part of the integrated
multifunction unit realised in composite material.
ere is a seat on the body where the automatic air vent valve
(2) is housed.
Primary heat exchanger
(condensation module).
It is formed from a casing that contains 4 elements with a
coil shape.
Each element is made up from 5 elliptical spirals (3).
e entire module is realised in stainless steel and its internal
part makes up the sealed combustion chamber and the con-
densation chamber (2).
e rst three elements are aected directly by the action of
the cylindrical burner applied to the front, while the fourth is
arranged in the condensation chamber, which is separated from
the combustion chamber by sheet steel (see ue circuit).
PTo reduce head losses to a minimum and increase the ow rate
available to the system, the ow is made up from the parallel
connection of the rst two elements, the return, instead is made
up from the parallel connection of the last two elements.
e heat exchanger inlet is connected to the pump ow and the
outlet, on which the NTC central heating probe is positioned
(1), is connected to the primary circuit ow.
e primary circuit return and ow pipes are coupled using
threaded ttings with at gasket.
e ue hood (4) is connected to the rear using a relevant
gasket blocked 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 in the upper part of the module
(5).
FLUE GAS
RETURN
FLOW
EXHAUST
CONDENSATE
2
1
4
35
1
2

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Motorised 3-way valve.
It is an electric 3-way valve operating on he primary circuit
return that allows, according to request (DHW or CH), to
introduce boiler water into the CH system or the storage
tank coil.
is depends on the position of the shutter (5) which, closes
the passage towards the system opening it at the same time
towards the storage tank (DHW position) or vice versa (CH
position).
e shutter (5) is moved into both positions by powering the
motor (1).
e hydraulic part is made up from a group of composite
material (2) that also integrates the pump and is put into
action thanks to a motor (1) that causes movement according
to necessity.
Operation.
When it is necessary to reach the CH or DHW position, the
motor (1) is activated by the P.C.B.
Functioning of the motor leads to the movement of the shutter
(5) at every 180° rotation and compresses (CH position) or lea-
ves (DHW position) the shutter contrast spring to release (4).
Both the spring (4) and the shutter (5) are situated inside the
3-way cartridge (3).
e hydraulic arrival at the requested position, alternatively
causes the opening and closure of one of the two end run micro
switches (6) organised inside the motor box (1).
is allows to remove voltage to the motor blocking it in the
position reached and to enable motor functioning only in the
presence of a dierent request (DHW or CH signal).
Return
coil
storage tank
Flow
Pump
Return
system
RETURN
PUMP
RETURN
SYSTEM
RETURN
COIL