Immergas VICTRIX 50 User manual

GB Instruction booklet
and warning
Installer
User
Technician
VICTRIX 50

Dear Customer,
Congratulations for choosing a high quality Immergas product designed to ensure lasting comfort and safety. As an Immergas
customer you can always count on a professional Authorized Service Centre and qualied and updated personnel to gua-
rantee the constant eciency of your boiler.
Carefully read the following pages as they contain useful information on correct appliance use, and observe all instructions
in order to get the most from this Immergas product.
Contact our local Authorized Assistance Centre as soon as possible to request the preliminary operational test. Our techni-
cian will check correct operating conditions, make the necessary adjustments and will show you how to use the appliance
correctly.
In the event of problems or routine maintenance requirements, contact Authorized Immergas Centres: they have original
parts as well as personnel specically trained by the maker.
General instructions
is instruction manual is an integral part of the product and must be given to the user with the appliance.
Keep the manual in a safe place and read it carefully as it contains important information regarding safe installation,
operation and maintenance.
In accordance with current regulations, heating systems with heat outputs higher than 35 kW must be designed by quali-
ed professionals. Installation and maintenance must be performed in compliance with current regulations, according to
the manufacturer’s instructions and by professionally qualied personnel having specic technical expertise in the sector
of these systems.
e manufacturer is not responsible in case of injury to persons/animals or damage to things due to incorrect installation.
Maintenance must be performed by qualied technical personnel; in this case, an Authorised Technical Service Centre
represents a guarantee of qualication and professionalism.
e appliance must only be used for its expressly intended purpose. Any other use is considered improper and therefore
hazardous.
In case of errors in installation, operation and maintenance due to non-compliance with current technical regulations,
standards or the instructions contained in this manual (or in any case supplied by the manufacturer), no contractual or
non-contractual liability is accepted for possible damage and the appliance warranty is invalidated.

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INDEX
Immergas S.p.A. declines any responsibility for printing or transcription errors, and reserves the right to make any changes to
its technical and commercial lists without prior notice.
INSTALLER pag.
USER pag.
TECHNICIAN pag.
1 Boiler installation.......................................................................................................................................................................... 3
1.1 Installation instructions. ............................................................................................................................................................... 3
1.2 Location of appliances................................................................................................................................................................... 3
1.3 Airing and ventilation of installation rooms. ................................................................................................................................. 4
1.4 External installation. ..................................................................................................................................................................... 5
1.5 Antifreeze protection..................................................................................................................................................................... 5
1.6 Main dimensions. ......................................................................................................................................................................... 6
1.7 Connections. ................................................................................................................................................................................ 7
1.8 Air intake and fume exhaust terminal installation ....................................................................................................................... 10
1.9 Boiler installation with “C” type conguration ........................................................................................................................... 13
1.10 Installing “B23 ” type single boiler with open chamber and forced draught. ............................................................................... 15
1.11 Existing ue ducting. .................................................................................................................................................................. 17
1.12 Fume exhaust with boiler in cascade. .......................................................................................................................................... 18
1.13 System lling. ............................................................................................................................................................................. 18
1.14 Filling condensate collection trap. ............................................................................................................................................... 19
1.15 Gas system start-up..................................................................................................................................................................... 19
1.16 Boiler start-up (lighting). ............................................................................................................................................................ 19
1.17 Circulating pump. ...................................................................................................................................................................... 19
1.18 VICTRIX 50 boiler components. ............................................................................................................................................... 20
1.19 Plumbing diagram for VICTRIX 50 with optionals.................................................................................................................... 21
1.20 Plumbing diagram with 2 VICTRIX 50 appliances in cascade with optionals............................................................................. 22
1.21 Plumbing diagram with 3 VICTRIX 50 appliances in cascade with optionals............................................................................. 23
1.22 Installation examples - VICTRIX 50 single boiler. ...................................................................................................................... 24
1.23 Installation examples - VICTRIX 50 boilers in cascade............................................................................................................... 25
1.24 Kits available by request.............................................................................................................................................................. 26
2 Operation and maintenance instructions .................................................................................................................................... 27
2.1 Cleaning and maintenance.......................................................................................................................................................... 27
2.2 Installation room airing and ventilation. ..................................................................................................................................... 27
2.3 General instructions.................................................................................................................................................................... 27
2.4 VICTRIX 50 - Control panel. .................................................................................................................................................... 28
2.5 Restoring heating system pressure. .............................................................................................................................................. 30
2.6 Draining the system.................................................................................................................................................................... 30
2.7 Antifreeze protection................................................................................................................................................................... 31
2.8 Casing cleaning. ......................................................................................................................................................................... 31
2.9 Decommissioning. ...................................................................................................................................................................... 31
3 Boiler start-up (preliminary check).............................................................................................................................................. 32
3.1 VICTRIX 50 wiring diagram...................................................................................................................................................... 33
3.2 VICTRIX 50 plumbing diagram................................................................................................................................................. 34
3.3 Appliance operational parameters................................................................................................................................................ 35
3.4 Operational anomalies with manual reset.................................................................................................................................... 37
3.5 Operating anomalies with electric reset. ...................................................................................................................................... 38
3.6 Converting the boiler to another type of gas. .............................................................................................................................. 39
3.7 Checks following conversion to another type of gas. ................................................................................................................... 39
3.8 Possible adjustments. .................................................................................................................................................................. 39
3.9 Air/gas ratio adjustment.............................................................................................................................................................. 39
3.10 Combustion parameters check. ................................................................................................................................................... 40
3.11 Rated heat output adjustment..................................................................................................................................................... 40
3.12 Heating min. output adjustment................................................................................................................................................. 40
3.13 Domestic circuit output adjustment............................................................................................................................................ 40
3.14 Circulating pump function mode. .............................................................................................................................................. 40
3.15 “Chimney-Sweep” function......................................................................................................................................................... 40
3.16 Pump antiblock function. ........................................................................................................................................................... 40
3.17 Radiator antifreeze function........................................................................................................................................................ 40
3.18 Max. delivery temperature value in heating................................................................................................................................. 40
3.19 Casing removal. .......................................................................................................................................................................... 42
3.20 Yearly appliance check and maintenance. .................................................................................................................................... 43
3.21 VICTRIX 50 variable heat output. ............................................................................................................................................. 43
3.22 VICTRIX 50 technical data........................................................................................................................................................ 44

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1 BOILER INSTALLATION
1.1 Installation instructions.
Immergas gas appliances must be installed exclusively by a
professionally qualied and authorized technician.
“VICTRIX 50” Range boilers can be installed outside or in
a suitable room (heating station).
Installation must meet the provisions of current standards
and all applicable laws and regulations.
Important: ese boilers are designed exclusively for wall
mounting.
ese boilers must be used for room and similar heating.
ese boilers are used to heat water to below boiling point at
atmospheric pressure; therefore they must be connected to a
heating system suitable for their performance and power.
Before installing the appliance, ensure that it is delivered
in perfect condition; if in doubt, contact the supplier im-
mediately.
Packaging materials (staples, nails, plastic bags, polystyrene
foam, etc.) constitute a potential hazard and must be kept
out of the reach of children.
Keep all ammable objects (paper, rags, plastic, polystyrene,
etc.) away from the appliance.
In case of anomalies, faults or imperfect operation, the ap-
pliance must be deactivated; call a qualied technician (e.g.
the Immergas Technical Assistance Centre, which has specic
technical expertise and original replacement parts).
erefore do not carry out any operation or try to repair
the appliance.
Failure to observe the above implies personal responsibility
and invalidates the warranty.
• Installation rules: ese boilers are not designed to be
installed on plinths or oors (see gure), but exclusively
for wall mounting. e wall surface must be smooth,
without any protrusions or recesses enabling access to the
rear part. Wall mounting of the boiler must guarantee
stable and eective support for the generator. e plugs
supplied standard with the appliance ensure adequate
support only if inserted correctly (according to technical
standards) in walls made of solid or cavity bricks. With
walls made from bricks or cavity bricks, partitions with
limited static properties, or in any case walls other than
those indicated, a static test must be carried out to ensure
adequate support. e boilers must be installed is such a
way as to avoid any knocking or tampering.
1.2 Location of appliances.
“VICTRIX 50” range boilers can be installed:
- outdoors;
- in external rooms, also adjacent to the building being
served, located on an uncovered area provided it is struc-
turally separated and without common walls, or situated on
the at roof of the building served, always with common
walls;
- in buildings intended for other uses or in rooms included
within the building.
Such rooms must only be used for the heating systems.
Caution: Installation of appliances fed by gas at a density
higher than 0.8 (LPG) is only allowed in above ground
rooms, possibly communicating with rooms that are also
above ground. In both cases the treadable surface must not
have depressions or hollows able to create gas pockets deter-
mining hazardous conditions.
Height of installation room.
Installation of a single appliance: the room must be at least
2 m high.
Installation of several appliances in cascade (2 or 3 VICTRIX
50 appliances): considering the size of the boiler, the fume
exhaust manifold (to be installed with 3% slope) and the
water manifolds, the room must at least 2.30 m high.
e above heights enable correct installation of the appli-
ances.
Arrangement of appliances in room.
Single appliance: the distances between any external part of
the boiler and the vertical and horizontal walls of the room
must allow access to the adjustment, safety and control parts
and also routine maintenance operations.
Several appliances not connected together but installed in the
same room: there must be a distance of at least 200 mm be-
tween several generators installed on the same wall, in order
to allow access to the adjustment, safety and control parts and
also routine maintenance of all the appliances installed.
Installation in cascade (2 or 3 VICTRIX 50 appliances): see
instructions on page 18.

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1.3 Airing and ventilation of installation rooms.
e rooms must have one or more permanent ventilation
openings on the external walls. e vents can be protected
with metal grills, nets and/or anti-rain ns provided they do
not reduce the net ventilation area.
e ventilation openings must be executed and located so that
they do not form gas pockets, irrespective of the conformation
of the covering.
Ventilation for installation in external rooms. e mini-
mum free surfaces, according to total heating power, must
not be less than (the values are rounded o to the highest
gure):
a) rooms above ground
S > 510 cm 2 for 1 VICTRIX 50 single
S > 1020 cm 2 for 2 VICTRIX 50 appliances
in cascade
S > 1530 cm 2 for 3 VICTRIX 50 appliances
in cascade
b) basements and cellars up to -5 m from the reference
level.
S > 765 cm 2 for 1 VICTRIX 50 single
S > 1530 cm 2 for 2 VICTRIX 50 appliances
in cascade
S > 2290 cm 2 for 3 VICTRIX 50 appliances in cas-
cade
c) cellars at a distance of between -5 m and -10 m from
the reference level.
S > 5000 cm 2 for all congurations
In any case the net area of each opening must not be less
than 100 cm 2.
Important: When installing appliances fed with gas at
densities higher than 0.8 (LPG) in external rooms, above
ground, at least 2/3 of the ventilation surface must be ush
with the treadable level, with a min. height of 0.2 m.
e ventilation openings must be at least 2 m away from
hollows, depressions or openings communicating with rooms
located below the treadable level or drainage ducts, for heat-
ing powers of not more than 116 kW and 4.5 m for higher
heating powers.
Ventilation for installation in buildings also intended for
other uses or in rooms located within the building served.
e ventilation area must not be less than 3000 cm 2 in case
of natural gas and not less than 5000 cm 2 for LPG.
Fume exhaust.
e “VICTRIX 50” boiler must be connected to an ecient
single ue.
N.B.: With single installation, the “VICTRIX 50” can be
connected to the Ø 80 mm exible ducting system for
condensing boilers (point 1.11 of this manual).
Alternatively, the “VICTRIX 50” boiler can exhaust the
fumes directly outside, using the special fume exhaust kits
described in this manual (points 1.9 and 1.10).
When installing “VICTRIX 50” boilers in cascade, the fume
exhaust manifold (supplied by Immergas) must be connected to
an ecient ue of suitable size (see page 18).

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1.4 External installation.
e “VICTRIX 50” boiler has IPX5D protection rating and
can also be installed outside, without requiring additional
protection.
Important: All the optional kits that can be connected to
the boiler must be protected according to their electrical
protection rating.
1.5 Antifreeze protection.
Min. temperature -5°C. e boiler comes standard with an
antifreeze function that switches on the pump and burner
when the system water temperature in the boiler falls below
3°C.
However, the antifreeze function is guaranteed only if:
- the boiler is correctly connected to the gas and electricity
supply circuits;
- the main switch is on;
- the boiler is not in ignition “block”;
- the main boiler components are ecient.
In these conditions the boiler is protected against freezing to a
room temperature of -5°C.
Min. temperature -15°C. If the boiler is installed in a place
where the temperature falls below -5°C and in the event
there is no gas, or the boiler goes on ignition “block”, the
appliance may freeze.
To avoid the risk of freezing, comply with the following
instructions:
- Protect the heating circuit from freezing by introducing
a good quality antifreeze liquid, carefully following the
manufacturer’s instructions regarding the amount required,
and respect the minimum temperature required for pre-
serving the system.
e materials the boilers are made from are resistant to ethylene
and propylene glycol-based antifreeze liquids.
For life and possible disposal, follow the supplier’s instruc-
tions.
- Protect the condensate drain trap and electronic card
against freezing by using an accessory suppliable by request
(antifreeze kit) comprising two electric heating elements,
the relevant cables and a control thermostat (carefully read
the installation instructions contained in the accessory kit
pack).
Boiler antifreezing protection is thus ensured only if:
- the boiler is correctly connected to the electrical feed circuit;
- the main switch is on;
- the antifreezing kit components are ecient.
In these conditions the boiler is protected against freezing to a
temperature of -15°C.
e warranty does not cover damage due to interruption of the
electrical power supply and non-compliance with that given on
the previous page.

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1.6 Main dimensions.
Height (mm) Width (mm) Depth (mm)
950 600 525
Connections
GAS SYSTEM
G R D
3/4” 1”1/2 1”1/2
Key:
V - Electrical connection
G - Gas supply
R - System return
M - System delivery
SC - Condensate drain
(min. internal diameter Ø 13 mm)

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1.7 Connections.
Gas connection (Appliance category II 2H3+).
Our boilers are built to operate on methane gas (G20) and
LPG. Supply pipes must be the same as or larger than the
3/4” G boiler tting.
N.B.: the gas supply pipe must be suitably dimensioned
according to current regulations in order to guarantee correct
gas ow to the boiler even in conditions of max. generator
output and to guarantee appliance eciency (technical data).
e coupling system must conform to standards.
Before connecting the gas line, ensure that all system gas
pipelines are perfectly clean, and remove any residues that
could impair boiler eciency. Also make sure the gas supply
corresponds to that for which the boiler is arranged (see boiler
dataplate). If dierent, the appliance should be converted for
operation with the specic type of gas required (see convert-
ing appliance to another type of gas). e dynamic gas supply
pressure must also be checked (methane or LPG) according to
the type used in the boiler, as insucient levels could reduce
generator power and cause malfunctions.
Ensure correct gas cock connection as shown in the assembly
sequence given in the gure.
A quick closing manual on/o valve with 90° turning and
stopping at end of travel in the fully open/closed positions
must be installed in a visible and easily accessible position
on the gas supply piping outside the room where the appli-
ance is installed.
Combustible gas quality. e appliance is designed to
operate on gas free of impurities; otherwise it is advisable
to t special lters ahead of the appliance for restoring the
purity of the gas.
Storage tanks (in case of supply from LPG depot).
- New LPG storage tanks may contain residuals of inert
gases (nitrogen) that impoverish the mixture delivered to
the appliance, causing anomalous operation.
- Due to the composition of the LPG mixture, layering
of the mixture components may occur during the period
of storage in the tanks. is can cause a variation in the
heating power of the mixture delivered to the appliance,
with subsequent change in its performance.
Water connection. Before making the water connections,
all system piping must be carefully cleaned to remove any
residues that could impair boiler eciency. It is advisable to
arrange a lter on the system for collection and separation of
any impurities present in the system (sludge lter). In order
to avoid scaling in the heating system, the provisions given
in the regulations on water treatment in heating systems
for civil use must be respected. Water connections must be
made in a rational way using the connections on the boiler
template. e boiler safety valve outlet must be connected to
a drain funnel, which is present in the boiler but not installed,
and in turn connected to a drainage pipe. Otherwise, the
manufacturer declines any responsibility in case of ooding
of the room if the drain valve cuts in.
Condensate drain. To drain the condensate produced by the
appliance, it is necessary to connect to the drainage system
by means of acid condensate resistant pipes having an
internal diameter of at least 13 mm. e system connecting
the appliance to the drainage system must be carried out in
such a way as to prevent freezing of the liquid contained in
it. Before appliance start-up, ensure that the condensate can
be correctly removed. Also, comply with national and local
regulations on discharging waste waters.
Electrical connection. e electrical system must be carried
out in accordance with the law. e entire “VICTRIX 50”
boiler has IPX5D protection rating. Electrical safety of the
unit is guaranteed when correctly connected to an ecient
earthing system as specied by current safety standards.
Important: Immergas S.p.A. declines any responsibility for
damage or physical injury caused by failure to connect the
boiler to an ecient earthing system or failure to observe
the reference standards.
Key:
1 - Gas valve
2 - Flat seal
3 - Gas pipe
4 - Nut

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Also ensure that the electrical installation complies with the
maximum absorbed power specied on the boiler dataplate.
Boilers are supplied complete with an “X” type power cable
without plug. e power cable must be connected to a 230V
±10% / 50Hz mains supply respecting the pole sequence L-N
and earth connection , the mains power supply must also
be equipped with a multi-pole circuit breaker with contact
opening gap of at least 3 mm. e main switch must be
installed in a marked and accessible position outside the
rooms. When replacing the power supply cable, contact a
qualied technician (e.g. the Immergas Technical Assistance
Service). e power cable must be laid as shown.
In case of mains fuse replacement on the connection terminal
board, use a 2A quick-blow fuse. Do not use adapters,
multiple sockets or extension leads for the main power
supply to the appliance.
If correct L-N polarity is not respected during connection,
the boiler will not detect the ame and inhibits ignition.
Important: also, whenever L-N polarity is not respected, if
the neutral is live with temporary residual voltage over 30V,
the boiler could operate just the same (but only temporarily).
Carry out voltage readings with suitable instruments; do not
use a mains tester screwdriver.
ermoregulation controls (Optional).
e boiler is arranged for application of the zone and cascade
regulator, zone manager and external sensor.
ese components are available as separate kits to the boiler
and are supplied by request.
Carefully read the use and assembly instructions contained
in the accessory kit.
• e zone and cascade regulator is connected to the boiler
by just 2 wires and is fed with 230 V, and allows the fol-
lowing:
- management of a water circuit with 2 mixed zones (mixer
valve); 1 direct zone; 1 generator unit and relevant cir-
culating pumps;
- system self-diagnosis for displaying any boiler opera-
tional anomalies;
- setting of two room temperature values: one for day
(comfort temperature) and one for night (lower tem-
perature);
- management of domestic hot water temperature (in
combination with a generator unit);
- management of boiler delivery temperature according
to the external temperature;
- selecting the required function mode from the various
possible alternatives for each single water circuit:
- permanent operation in comfort temp.;
- permanent operation in lower temp.;
- permanent operation in adjustable antifreeze temp.

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• Zone manager.
In addition to the functions described in the previous
point, the zone manager panel enables the user to control
and have at hand all the important information regarding
operation of the appliance and the heating system with
the opportunity of easily intervening on the previously
set parameters without having to go to the place where
the zone and cascade regulator is installed. e climate
chronothermostat incorporated in the remote panel ena-
bles the system delivery temperature to be adjusted to the
actual needs of the room being heated, in order to obtain
the desired room temperature with extreme precision and
therefore with evident saving in running costs. It also ena-
bles the room temperature and actual external temperature
(if the external sensor is present) to be displayed. e zone
manager is fed directly by the cascade thermoregulator by
means of 2 wires.
• External temperature sensor. is sensor can be connected
directly to the boiler electrical system and allows the max.
system delivery temperature to be automatically decreased
when the outside temperature increases, in order to adjust
the heat supplied to the system according to the change in
external temperature. e external sensor always operates
when connected regardless of the presence or type of
thermoregulator used and can work in combination with
both thermoregulators. The external sensor electrical
connection must be made to the G and J terminals on the
boiler X86 connection terminal board (see g. page 8).
Zone and cascade regulator or On/O chronothermostat
(Optional) electrical connection. e following operations
must be carried out after disconnecting the electrical power sup-
ply. e possible thermostat or On/O room chronothermo-
stat must be connected to terminals “E” and “F” eliminating
jumper X40 (see g. page 8). Make sure that the On/O
thermostat contact is of the “clean” type, i.e. independent of
the mains supply, otherwise the electronic adjustment card
would be damaged. e possible zone and cascade regula-
tor must be connected by means of terminals 37 and 38 to
terminals “M” and “O” on terminal board X86 (in boiler)
respecting the polarity, (see g. page 8) however, connection
with wrong polarity will not damage the thermoregulator but
prevents its operation.
Important: if the zone and cascade regulator is used, two
separate lines must be arranged in accordance with current
regulations on electrical systems. Boiler pipes must never
be used to earth the electric or telephone lines. erefore,
ensure that this does not occur, before making the boiler
electrical connections.
Installation with system operating at low temperature.
e boiler can directly feed a low temperature system, varying
the max. delivery temperature of the generator and setting a
value of between 20 and 85 °C. To vary the generator max.
delivery temperature, modify the generator max. delivery
temperature of parameter No. 4 according to the “parameter
mode” procedure.
In this mode it is advisable to include a safety in series with
the boiler circulating pump, formed of a thermostat having
a limit temperature of 55 °C. e thermostat must be po-
sitioned on the system delivery pipe at more than 2 metres
from the boiler.

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1.8 Air intake and fume exhaust terminal installation
Immergas supplies various solutions, separately from the
boilers, for the installation of air intake and fume exhaust
terminals without which the boiler cannot work.
Important: the boiler must be installed exclusively with
an original Immergas “Green Range” air intake and fume
extraction system in plastic, as required by current regula-
tions. is system is identiable by a special distinctive
marking giving the note: “for condensing boilers only”.
• Resistance factors and equivalent lengths Each fume ex-
haust system component has a Resistance Factor obtained
from experimental testing and specied in the table below.
e resistance factor for individual components does not
depend on the type of boiler on which they are installed
and is a dimensional value. It depends on the temperature
of uids owing through the ducts and therefore varies
according to applications for air intake or fume exhaust.
Each single component has a resistance corresponding to a
certain length in metres of pipe of the same diameter; the
so-called equivalent length. All boilers have an experimen-
tally obtainable maximum Resistance Factor equal to 100.
e maximum permissible resistance factor corresponds
to the resistance measured with the maximum permissible
pipe length with each type of Terminal Kit. is informa-
tion enables calculations for verifying the possibility of ex-
ecuting various congurations of fume exhaust systems.
Positioning of double lip seals. For correct positioning
of lip seals on elbows and extensions, follow the assembly
direction given in the gure.

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Resistance factors and equivalent lengths tables.
TYPE OF DUCT
Resistance
Factor
(R)
Equivalent
length in metres of
concentric pipe
Ø 80/125
Equivalent
length
in metres of pipe
Ø 80
Concentric pipe Ø 80/125 m 1 Intake
and
exhaust
4.9
1.0 m Exhaust
4.0 m
90° bend concentric Ø 80/125 Intake
and
exhaust
9.5
1.9 m Exhaust
7.9 m
45° bend concentric Ø 80/125 Intake
and
exhaust
6.8
1.4 m Exhaust
5.6 m
Terminal complete with concentric horizontal intake-
exhaust Ø 80/125 Intake
and
exhaust
26.8
5.5 m Exhaust
22.3 m
Terminal complete with concentric horizontal intake-
exhaust Ø 80/125 Intake
and
exhaust
22.9
4.7 m Exhaust
19.0 m
Terminal complete with concentric vertical intake-ex-
haust Ø 80/125
Intake
and
exhaust
16.7
3.4 m Exhaust
13.9 m
Concentric vertical
intake-exhaust terminal Ø 80/125 Intake
and
exhaust
13.3
2.7 m Exhaust
11.0 m

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Resistance factors and equivalent lengths tables.
TYPE OF DUCT
Resistance
Factor
(R)
Equivalent length
in m of concentric pipe
Ø 80/125
Equivalent length
in m of pipe
Ø 80
Pipe Ø 80 m 1
Exhaust
1.2 0.24 m Exhaust 1.0 m
Complete exhaust terminal Ø 80 m 1
Exhaust
3.1 0.63 m Exhaust
2.6 m
Exhaust terminal Ø 80
Exhaust
1.9 0.38 m Exhaust 1.6 m
90 ° bend Ø 80
Exhaust
2.6 0.53 m Exhaust 2.1 m
45 ° bend Ø 80
Exhaust
1.6 0.32 m Exhaust 1.3 m
Complete vertical
exhaust terminal Ø 80
Exhaust
3.6 0.73 m Exhaust 3 m

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1.9 Boiler installation with “C” type conguration
“VICTRIX 50” boilers leave the factory with “B 23” type
conguration (open chamber and forced draught), to change
the conguration to “C” type (sealed chamber and forced
draught), remove the Ø 80 adapter, the bracket and gasket
present on the boiler cover.
Horizontal intake kits Ø 80/125.
Kit assembly: t the Ø 80/125 adapter (1) up to the stop
on the central hole of the boiler. Slide the gasket (2) along
the adapter (1) up to the special groove, then x it to the
cover by means of the previously removed sheet plate (3).
Fit the male end (smooth) of the bend (4) up to the stop on
the adapter (1). Fit the male end (smooth) of the Ø 80/125
concentric terminal pipe (5) up to the stop on the female end
of the bend (4) (with lip seals), making sure that the relevant
internal (6) and external (7) rings are tted; this will ensure
hold and joining of the elements making up the kit.
• Coupling extension pipes and concentric elbows Ø 80/
125. To install possible coupling extensions with other
elements of the boiler assembly, proceed as follows: t the
male end (smooth) of the concentric pipe or elbow up to
the stop on the female end (with lip seals) of the previously
installed element; this will ensure hold and correct joining
of the elements.
e Ø 80/125 kit can be installed with the rear, right side,
left side and front outlet.
• Extensions for horizontal kit. e horizontal intake-
exhaust kit Ø 80/125 can be extended up to a max.
horizontal distance of 14 m, including the grill terminal
and excluding the concentric bend leaving the boiler. is
conguration corresponds to a resistance factor of 100. In
this case special extensions must be requested.
N.B.: when installing the ducts a min. slope of 3% must be
maintained and a section clamp with pin must be installed
every 3 metres.
• External grill. N.B.: for safety purposes, do not even
temporarily obstruct the boiler intake/exhaust terminal.
2
1
3
47
5
6
e kit comprises:
1 - Adapter Ø 80/125 (1)
1 - Gasket (2)
1 - 87° concentric bend
Ø 80/125 (4)
1 - Concentric intake/exhaust
terminal Ø 80/125 (5)
1 - Internal ring (6)
1 - External ring (7)

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Vertical kit with aluminium tile Ø 80/125.
Kit assembly: Fit the Ø 80/125 adapter (1) up to the stop
on the central hole of the boiler. Slide the gasket (2) along
the adapter (1) up to the special groove, then x it to the
cover by means of the previously removed sheet plate (3).
Imitation aluminium tile installation: replace the tile with
the aluminium sheet (5), shaping it to ensure that rainwater
runs o. Position the xed half-shell (6) on the aluminium
tile and insert the intake/exhaust terminal (7). Fit the male
end (smooth) of the Ø 80/125 concentric terminal up to
the stop on the female end of the adapter (1) (with lip seals),
making sure that the ring (4) is already tted; this will ensure
hold and joining of the elements making up the kit.
• Coupling extension pipe ttings and concentric elbows
Ø 80/125. To install possible coupling extensions with
other elements of the fume exhaust system, proceed as
follows: t the male end (smooth) of the concentric pipe
or elbow down the stop on the female end (with lip seals)
of the previously installed element; this will ensure hold
and correct joining of the elements.
Important: if the exhaust terminal and/or concentric
extension pipe needs shortening, consider that the internal
conduit must always protrude by 5 mm with respect to the
external conduit.
is particular terminal enables fume exhaust and air intake
necessary for combustion, in a vertical direction.
e Ø 80/125 vertical kit with aluminium tile enables instal-
lation on terraces and roofs with maximum slopes of between
25% and 45% (24°), the height between the terminal cap
and half-shell (260 mm) must always be respected.
e vertical kit with this conguration can be extended to
a max. vertical length of 18 m, including the terminal. is
conguration corresponds to a resistance factor of 100. In
this case special coupling extensions must be requested.
2
1
3
4
5
8
7
6
e kit comprises:
1 - Adapter Ø 80/125 (1)
1 - Gasket (2)
1 - Ring (4)
1 - Aluminium tile (5)
1 - Fixed half-shell (6)
1 - Concentric intake/exhaust
terminal Ø 80/125 (7)
1 - Movable half-shell (8)

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Using the Ø 80 vertical terminal for direct fume exhaust, the
terminal must be shortened (see note below); even in this
case the xing ring (1) must be inserted, tting it up to the
stop on the boiler cover.
1.10 Installing “B23 ” type single boiler with open
chamber and forced draught.
“VICTRIX 50” boilers leave the factory in “B23“ type con-
guration (open chamber and forced draught).
Air is drawn directly from the place where the boiler is
installed, by means of special slots obtained in the back
of the appliance and fumes are exhausted into a single ue
or directly to the outside. In this conguration the boiler is
classied B23 type.
With this conguration:
- air is drawn directly from the place where the boiler is
installed;
- the fume exhaust must be connected to its own single ue
or ducted directly to the outside.
Ø 80 vertical kit.
Kit assembly: Fit the Ø 80 terminal (2) up to the stop on
the central hole of the boiler, making sure to t the ring (1);
this will ensure hold and joining of the elements making
up the kit.
• Coupling of extension pipes and elbows. To install possible
coupling extensions with other elements of the fume ex-
haust system, proceed as follows: t the male end (smooth)
of the pipe or elbow up to the stop on the female end (with
lip seals) of the previously tted element; this will ensure
hold and correct joining of the elements.
• Extensions for vertical exhaust kit. e max. vertical
straight length (without bends) usable for Ø 80 exhaust
pipes is 30 metres.
2
1
e kit comprises:
1 - Ring (1)
1 - Exhaust terminal Ø 80 (2)

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Ø 80 horizontal kit with exhaust in ue. Kit assembly:
Fit the male end of the Ø 80 bend (1) up to the stop on
the central hole of the boiler. Fit the male end (smooth) of
the exhaust pipe (2) up to the stop on the female end of the
bend (1), making sure that the internal ring (3) is tted;
this will ensure hold and joining of the elements making
up the kit.
• Coupling of extension pipes and elbows. To install possible
coupling extensions with other elements of the fume ex-
haust system, proceed as follows: t the male end (smooth)
of the pipe or elbow up to the stop on the female end (with
lip seals) of the previously installed element; this will ensure
seal and correct joining of the elements.
• Extensions for exhaust kit. e max. horizontal straight
length (without exhaust bend) usable for Ø 80 exhaust
pipes is 30 metres (see gure on page 17).
N.B.: to favour the removal of possible condensate forming
in the exhaust pipe, tilt the pipes towards the boilers with a
min. slope of 1.5% (see gure on page 17). When installing
the Ø 80 ducts, a section clamp with pin must be installed
every 3 metres.
e kit comprises:
1 - 90° bend Ø 80 (1)
1 - Exhaust pipe Ø 80 (2)
1 - Internal ring (3)
Ø 80 horizontal kit with wall exhaust.
Kit assembly: Fit the male end of the Ø 80 bend (1) up to
the stop on the central hole of the boiler. Fit the male end
(smooth) of the exhaust terminal (2) up to the stop on the
female end of the bend (1), making sure that the relevant
internal (3) and external (4) rings are tted; this will ensure
hold and joining of the elements making up the kit.
• Coupling of extension pipes and elbows. To install possible
coupling extensions with other elements of the fume ex-
haust system, proceed as follows: t the male end (smooth)
of the pipe or elbow up to the stop on the female end (with
lip seals) of the previously installed element; this will ensure
hold and correct joining of the elements.
e kit comprises:
1 - 90° bend Ø 80 (1)
1 - Exhaust terminal Ø 80 (2)
1 - Internal ring (3)
1 - External ring (4)

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1.11 Existing ue ducting.
Ducting is an operation through which, within the context
of restructuring a system and with the introduction of one or
more special ducts, a new system is executed for evacuating
the fumes of a gas appliance, starting from an existing ue
(or a chimney) or a technical hole. Ducting requires using
conduits declared suitable for the purpose by the manufac-
turer, following the installation and operation instructions
provided by the manufacturer, and the requirements of the
standard.
Immergas Ø 80 mm ducting system. e “Green Range”
Ø 80 exible ducting system must only be used with Immergas
condensing boilers.
In any case, ducting operations must respect the provisions
contained in the standard and in current technical
regulations; in particular, the declaration of conformity must
be compiled at the end of work and on commissioning of the
ducted system. e instructions in the project or technical
report must likewise be followed, in cases provided for by
the standard and current technical regulations. e system
or components of the system have a technical life complying
with current standards, provided that:
- it is used in average atmospheric and environmental condi-
tions, according to current regulations (absence of fumes,
dusts or gases that can alter the normal thermophysical
or chemical conditions; existence of temperatures coming
within the standard range of daily variation, etc.).
- Installation and maintenance are performed according to
the manufacturer’s instructions and the provisions of cur-
rent regulations.
- e max. possible length of the Ø 80 exible ducting verti-
cal section is equal to 30 m. is length is obtained consid-
ering the complete exhaust terminal, 1m of Ø 80 pipe in
exhaust, two 90° Ø 80 bends at boiler outlet for connecting
to the ducting system and two direction changes of the
exible tube inside the ue/technical hole.

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1.12 Fume exhaust with boiler in cascade.
“VICTRIX 50” boilers installed in cascade and composed
of 2 or 3 generators, can be joined by manifold to a single
ue going the chimney.
Immergas supplies a suitable and original fume exhaust
system separately from the boilers.
However, for correct assembly of the kit the following indica-
tions must be taken into consideration.
- there must be a distance of 800 mm between generators
(either 2 or 3) (see gure above);
- the generators must be arranged on the same horizontal
line;
- the Ø 125 exhaust manifold must have a min. slope of 3%;
- the drain for condensate produced by the appliances must
be run into a drainage system;
- the fume exhaust manifold kit cannot be installed on
the outside (the tubing must not be exposed to UV sun-
light).
N.B.: check and if necessary adjust the heating power of each
single appliance (see adjustments page 40).
Kit assembly: Fit the various sections with fume damper
(1-2 and 3) up to the stop on the central hole of each single
boiler. Fit the various bends with inspection (4-5 and 6) on
the relevant sections with damper from the shortest to longest
so that the bend closest to the ue is the highest (see gure
above), then t pipe (7) on bend (4). Cut pipes (8) and (9)
to size in order to respect the centre distance of 800 mm
between the boilers (see gure above).
Install pipe (8) on bend (5) and then t everything on pipe
(7).
Install pipe (9) on bend (6) and then t everything on pipe
(8).
Cut pipe (12) to size for correct connection between the
ue and pipe (9).
Fit pipe (10) up to the stop on pipe (7). Fit the condensate
drain section with trap (11) up to the stop on pipe (10).
1.13 System lling.
After the boiler is connected, proceed with lling the system.
Filling must be done slowly to ensure the release of air bub-
bles in the water via the boiler and heating system vents.
e boiler is equipped with an automatic air valve located on
the circulating pump. Check that the cap is loosened. Open
the relief valves on the radiators. Close the relief valves only
when water comes out.
N.B.: During this operation, start the circulating pump at
intervals by means of the main switch on the control panel.
Vent the circulating pump by unscrewing the front cap and
keeping the motor running. Tighten the cap on completion.
N.B.: e “VICTRIX 50” boiler does not have an expansion
tank on the system. A closed expansion tank must be installed
to guarantee correct boiler operation. e expansion tank
must comply with current regulations in the country of
installation. e dimensions of the expansion tank depend
on the data relevant to the heating system; install a tank with
capacity meeting the requirements of current regulations.

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A = Head available at system at max. speed with single boiler
B = Head available at system at second speed with single boiler
C = Head available at system at max. speed with non-return valve for boilers in cascade
D = Head available at system at second speed with non-return valve for boilers in cascade
1.14 Filling condensate collection trap.
On rst lighting of the boiler fumes may come out the
condensate drain; after a few minutes’ operation check that
fumes no longer come out. is means that the trap is lled
with condensate to the correct level preventing the passage
of fumes.
1.15 Gas system start-up.
To start up the system proceed as follows:
- open windows and doors;
- avoid the presence of sparks or naked ames;
- vent all air from pipes;
- check gas supply tightness with the boiler gas ON/OFF
cock closed, no gas ow must be indicated on the meter
for 10 minutes;
1.16 Boiler start-up (lighting).
For issue of the Declaration of Conformity provided for by
Italian Law, the following must be done for boiler start-up:
- check the gas supply circuit tightness with the 0n/O valve
closed and subsequently open with gas valve closed; no gas
ow must be indicated on the meter for 30 minutes;
- ensure that the type of gas used corresponds to that for
which the boiler is arranged;
- switch on the boiler and ensure correct ignition;
- make sure that the gas ow and pressure values correspond
to those given in the manual (see page 43);
- check intervention of the safety device in case of no gas and
check activation time;
- check activation of the main switch ahead of the boiler
and on the unit;
- check that the concentric intake/exhaust terminal (if tted)
is not blocked.
If any of these checks gives negative results, do not start
the boiler.
N.B.: the boiler preliminary check must be carried out by a
qualied technician. e boiler warranty is valid as of the date
of testing.
e test and warranty certicate is issued to the user.
1.17 Circulating pump.
“VICTRIX 50” Range boilers are supplied with a built-in
circulating pump with 3-position electric speed control. e
boiler does not operate correctly with the circulating pump
on rst speed. To ensure optimal boiler operation, in case
of new systems (single pipe and modul) use the circulating
pump at maximum speed. e circulating pump is already
tted with a capacitor.
Pump release. If, after a prolonged period of inactivity, the
circulating pump is blocked, unscrew the front cap and turn
the motor shaft using a screwdriver. Take great care during
this operation to avoid damage to the motor.
System pump head.
Head (m H2O)
A
Flow rate (l/h)
B
C
Head (kPa)
D