Immergas VICTRIX MAIOR 35 X TT 1 ERP Operating instructions

VICTRIX MAIOR
35 X TT 1 ERP
IE
Instruction and
recommendation booklet
*1.038660ENG*

Immergas S.p.A. declines all liability due to printing or transcription errors, reserving the right to make any modications to its technical and commercial
documents without prior notice.
Dear Customer,
Our compliments for having chosen a top-quality Immergas product, able to assure well-being and safety for a long period of time. As an Immergas customer
you can also count on a qualied aer-sales service, prepared and updated to guarantee constant eciency of your boiler. Read the following pages carefully: you
will be able to draw useful suggestions regarding the correct use of the appliance, the respect of which, will conrm your satisfaction for the Immergas product.
Contact our area authorised aer-sales centre as soon as possible to request commissioning. Our technician will verify the correct functioning conditions; he
will perform the necessary calibrations and will demonstrate the correct use of the generator.
For assistance and scheduled maintenance contact Authorised Aer-Sales centres: they have original spare parts and are specically trained directly by the
manufacturer.
General recommendations
All Immergas products are protected with suitable transport packaging.
e material must be stored in dry environments protected against bad weather.
e instruction book is an integral and essential part of the product and must be consigned to the new user also in the case of transfer or succession of ownership.
It must be stored with care and consulted carefully, as all of the warnings provide important safety indications for installation, use and maintenance stages.
is instructions manual provides technical information for installing Immergas boilers. As for the other issues related to boiler installation (e.g. safety in the work
site, environment protection, injury prevention), it is necessary to comply with the provisions specied in the regulations in force and principles of good practice.
In compliance with legislation in force, the systems must be designed by qualied professionals, within the dimensional limits established by the Law. Installation
and maintenance must be performed in compliance with the regulations in force, according to the manufacturer's instructions and by an authorised company,
which has specic technical expertise in the system sector, as required by Law.
Improper installation or assembly of the Immergas appliance and/or components, accessories, kit and devices can cause unexpected problems to people, animals
and objects. Read the instructions provided with the product carefully to ensure a proper installation.
Maintenance must be carried out by an authorised company. e Authorised Aer-sales Service represents a guarantee of qualication and professionalism.
e appliance must only be destined for the use for which it has been expressly declared. Any other use will be considered improper and therefore potentially
dangerous.
If errors occur during installation, operation and maintenance, due to non compliance with technical laws in force, standards or instructions contained in this
book (or however supplied by the manufacturer), the manufacturer is excluded from any contractual and extra-contractual liability for any damages and the
appliance warranty is invalidated.
For further information regarding legislative and statutory provisions relative to the installation of gas heat generators, consult the Immergas site at the
following address: www.immergas.com.
Mauro Guareschi
Research & Development Director
Signature:
CE DECLARATION OF CONFORMITY
(according to ISO/IEC 17050-1)
e company IMMERGAS S.p.A., with registered oce in via Cisa Ligure 95 42041 Brescello (RE) whose design, manufacturing, and aer sale assistance
processes comply with the requirements of standard UNI EN ISO 9001:2008,
DECLARES that:
e VICTRIX MAIOR 35 X TT 1 ERP model boilers comply with the following European Directives and Delegated European Regulations:
“Eco-design” Directive 2009/125/EC, “Energy labelling” Directive 2010/30/EC, EU Regulation 811/2013, EU Regulation 813/2013, “Gas Appliance” Direc-
tive 2009/142/EC, “Electromagnetic Compatibility” Directive 2004/108/EC, “Performance” Directive 92/42/EC and “Low Voltage” Directive 2006/95/EC.

INDEX
USER pageINSTALLER page MAINTENANCE TECHNICIAN page
1 Boiler installation................................................ 5
1.1 Installation recommendations. ......................... 5
1.2 Main dimensions. .............................................. 6
1.3 Antifreeze protection. ........................................ 6
1.4 Gas connection.................................................... 7
1.5 Hydraulic connection......................................... 7
1.6 Electrical connection. ........................................ 8
1.7 Remote controls and room
chrono-thermostats (Optional). ....................... 8
1.8 External temperature probe (Optional)........... 9
1.9 Immergas ue systems. ...................................10
1.10 Tables of resistance factors
and equivalent lengths......................................10
1.11 Outdoor installation in a
partially protected area. ...................................12
1.12 Concentric horizontal kit installation............ 13
1.13 Concentric Vertical kit installation. ...............14
1.14 Separator kit installation.................................. 15
1.15 Adaptor C9 kit installation. ............................16
1.16 Ducting of ues or technical slots. .................17
1.17 Conguration type B, open chamber
and fan assisted for indoors.............................17
1.18 Flue gas exhaust to ue/chimney....................17
1.19 Flues, chimneys, chimney pots
and terminals..................................................... 17
1.20 Water treatment system lling........................ 18
1.21 System lling. ....................................................18
1.22 Condensate trap lling.....................................18
1.23 Gas system start-up. .........................................18
1.24 Boiler start up (ignition).................................. 18
1.25 Circulation pump..............................................19
1.26 Kits available on request. .................................19
1.27 Boiler components............................................20
2 Use and maintenance instructions ................. 21
2.1 Cleaning and maintenance.............................. 21
2.2 General warnings..............................................21
2.3 Control panel.....................................................21
2.4 Using the boiler. ................................................22
2.5 Troubleshooting................................................22
2.6 Information menu. ...........................................25
2.7 Boiler shutdown ................................................25
2.8 Restore central heating system pressure. .......25
2.9 System draining................................................ 25
2.10 Anti-freeze protection. ....................................25
2.11 Case cleaning.....................................................25
2.12 Decommissioning.............................................25
3 Boiler commissioning
(initial check).....................................................26
3.1 Boiler Hydraulic diagram. ...............................26
3.2 Wiring diagram.................................................27
3.3 Removable memory..........................................28
3.4 Troubleshooting................................................28
3.5 Converting the boiler
to other types of gas.......................................... 28
3.6 Checks following conversion
to another type of gas.......................................28
3.7 Calibration type involving
the replacement of a component. ...................29
3.8 Complete calibration function........................ 29
3.9 Adjusting the air gas ratio................................30
3.10 Fast calibration.................................................. 30
3.11 Flue test...............................................................30
3.12 Programming the P.C.B....................................31
3.13 Solar panels coupling function. ......................34
3.14 ‘’Chimney Sweep’’ function..............................34
3.15 Pump anti-block function. ..............................34
3.16 ree-way anti-block function........................34
3.17 Radiators anti-freeze function. .......................34
3.18 P.C.B. periodic self-check.................................34
3.19 Automatic vent function..................................34
3.20 Yearly appliance check and maintenance. .....35
3.21 Casing removal..................................................36
3.22 Variable heat output. ........................................38
3.23 Combustion parameters. .................................38
3.24 Technical data....................................................39
3.25 Key for data plate. .............................................40
3.26 Technical parameters for combination
boilers (in compliance with
Regulation 813/2013). ...................................... 41
3.27 Product che (in compliance
with Regulation 811/2013). ............................. 41
3.28 Parameters for lling in
the package che............................................... 42

5
SI NO
1-1
INSTALLERUSER
MAINTENANCE TECHNICIAN
YES NO
1BOILER INSTALLATION
1.1 INSTALLATION
RECOMMENDATIONS.
e Victrix Maior 35 X TT 1 ErP boiler has been
designed for wall mounted installation only, to
heat and produce domestic hot water for domes-
tic use and similar purposes (when the boiler is
connected to an external storage tank unit).
e place of installation of the appliance and
relative Immergas accessories must have suitable
features (technical and structural) such to allow
(always in safety, efficiency and comfortable
conditions):
- installation (according to the provisions of the
technical legislation and technical regulations);
- maintenance operations (including scheduled,
periodic, routine and special maintenance);
- removal (to outdoors in the place for loading
and transporting the appliances and compo-
nents) as well as their eventual replacement
with appliances and/or equivalent components.
e wall surface must be smooth, without any
protrusions or recesses enabling access to the
rear part. ey are not designed to be installed
on plinths or oors (Fig. 1-1).
By varying the type of installation the classica-
tion of the boiler also varies, precisely:
- Type B23 or B53 boiler if installed using the
relevant terminal for air intake directly from
the room in which the boiler has been installed.
- Type C boiler if installed using concentric
pipes or other types of pipes envisioned for
sealed chamber boilers for air intake and expul-
sion of ue gas.
Note: appliance classication is provided in the
depictions of the various installation solutions
shown on the following pages.
Only professionally enabled companies are
authorised to install Immergas gas appliances.
Installation must be carried out according to
regulation standards, current legislation and in
compliance with local technical regulations and
the required technical procedures.
Before installing the appliance, ensure that it is
delivered in perfect condition; if in doubt, contact
the supplier immediately. Packing materials (sta-
ples, nails, plastic bags, polystyrene foam, etc.)
constitute a hazard and must be kept out of the
reach of children. If the appliance is installed in-
side or between cabinets, ensure sucient space
for normal servicing; therefore it is advisable to
leave clearance of at least 3 cm between the boiler
casing and the vertical sides of the cabinet. Leave
adequate space above the boiler for possible water
and ue removal connections. Keep all amma-
ble objects away from the appliance (paper, rags,
plastic, polystyrene, etc.).
Do not place household appliances underneath
the boiler as they could be damaged if the safety
valve intervenes, if the drain trap is blocked, or
if there are leaks from the hydraulic connec-
tions; otherwise, the manufacturer cannot be
held responsible for any damage caused to the
household appliances.
For the aforementioned reasons, we recommend
not placing furnishings, furniture, etc. under
the boiler.
In the event of malfunctions, faults or incorrect
operation, turn the appliance o and contact an
authorised company (e.g. the Authorised Tech-
nical Assistance centre, which has specically
trained sta and original spare parts). Do not
attempt to modify or repair the appliance alone.
Failure to comply with the above implies personal
responsibility and invalidates the warranty.
•Installation regulations:
- this boiler can be installed outdoors in a
partially protected area. A partially protected
area is one in which the appliance is not
exposed to the direct action of the weather
(rain, snow, hail, etc..).
is type of installation is only possible when
permitted by the laws in force in the appliance's
country of destination.
- Installation in places with a re risk is pro-
hibited (for example: garages, closed parking
stalls), gas appliances and relative ue ducts,
ue exhaust pipes and combustion air intake
pipes.
- Installation is prohibited on the vertical
projection of cooking hobs.
- Installation is also prohibited in places/en-
vironments that constitute common parts of
oce condominiums such as stairs, cellars,
entrance halls, attics, los, escape routes,
etc. if they are not located inside technical
compartments under the responsibility of
each individual building and only accessible
to the user (for the features of the technical
compartments, see the technical standards in
force).
Attention: wall mounting of the boiler must
guarantee stable and ecient support for the
generator
e plugs (standard supply) are only to be used
to x the appliance to the wall; they only ensure
adequate support if inserted correctly (according
to technical standards) in walls made of solid or
semi-hollow brick or block. In the case of walls
made from hollow brick or block, 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.
ese boilers are used to heat water to below
boiling temperature in atmospheric pressure.
ey must be connected to a central heating
system and hot water circuit suited to their
performance and capacity.
Attention: e storage tank unit must also be
installed in an environment in which the tem-
perature cannot fall below 0°C.

6
1-2
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.2 MAIN DIMENSIONS.
Key:
SC - Condensate drain (minimum internal
diameter Ø 13 mm)
V - Electrical connection
G - Gas supply
RR - System lling
RU - Storage tank unit return (optional)
MU - Storage tank unit ow (optional)
R - System return
M - System ow
Height
(mm) Width (mm) Depth (mm)
748 440 280
CONNECTIONS
GAS DOMESTIC SYSTEM
G RR R M
1/2” 3/4” 3/4” 3/4”
1.3 ANTIFREEZE PROTECTION.
Minimum temperature -5°C. e boiler comes
standard with an anti-freeze function that ac-
tivates the pump and burner when the system
water temperature in the boiler falls below 4°C.
In these conditions the boiler is protected against
freezing to an ambient temperature of -5°C.
Minimum temperature -15°C. In the event the
boiler is installed in a place where the tempera-
ture falls below -5°C, the appliance can freeze.
To prevent the risk of freezing follow the instruc-
tions below:
- protect the central heating circuit from freezing
by inserting a good-quality antifreeze liquid
into this circuit, which is specially suited for
central heating systems and which is manu-
facturer guaranteed not to cause damage to
the heat exchanger or other components of
the boiler. e antifreeze liquid must not be
harmful to one's health. e instructions of the
manufacturer of this liquid must be followed
scrupulously regarding the percentage neces-
sary with respect to the minimum temperature
at which the system must be kept. An aqueous
solution must be made with potential pollution
class of water 2 (EN 1717:2002).
e materials used for the central heating circuit
of Immergas boilers withstand ethylene and
propylene glycol based antifreeze liquids (if the
mixtures are prepared perfectly).
For life and possible disposal, follow the sup-
plier's instructions.
- Protect the domestic hot water circuit against
freezing by using an accessory that is supplied
on request (anti-freeze kit) comprising two
electric heating elements, the relevant cables
and a control thermostat (carefully read the
installation instructions contained in the ac-
cessory kit pack).
In these conditions the boiler is protected against
freezing to temperature of -15°C.
Boiler antifreeze protection (both -5°C and -15°C)
is thus ensured only if:
- the boiler is correctly connected to gas and elec-
tricity power supply circuits;
- the boiler is powered constantly;
- the boiler is not in “o” mode;
- the boiler is not in anomaly conditions (parag.
2.5);
- the essential components of the boiler and/or
antifreeze kit are not faulty.
e warranty does not cover damage due to inter-
ruption of the electrical power supply and failure
to comply with that stated on the previous page.
NOTE: if the boiler is installed in places where
the temperature falls below 0°C the domestic
hot water and central heating attachment pipes
must be insulated.
e water in the storage tank unit is not protected
against freezing when the boiler is switched o.

7
1-3
INSTALLERUSER
MAINTENANCE TECHNICIAN
Key:
V - Electrical connection
1 - System lling valve
2 - System draining valve
3 - 3-bar safety valve drain tting signal
1.4 GAS CONNECTION.
Our boilers are designed to operate with methane
gas (G20) and LPG. Supply pipes must be the
same as or larger than the 3/4”G boiler tting.
Before connecting the gas line, carefully clean
inside all the fuel feed system pipes to remove
any residue that could impair boiler eciency.
Also make sure the gas corresponds to that for
which the boiler is prepared (see boiler data
name plate). If dierent, the appliance must be
converted for operation with the other type of
gas (see converting appliance for other gas types).
The dynamic gas supply (methane or LPG)
pressure must also be checked according to the
type used in the boiler, which must comply with
the technical standards in force, as insucient
levels can reduce generator output and cause
malfunctions.
Ensure correct gas cock connection. e gas sup-
ply pipe must be suitably dimensioned according
to current regulations in order to guarantee cor-
rect gas ow rate to the burner even in conditions
of maximum generator output and to guarantee
appliance eciency (technical specications).
e coupling system must conform to technical
standards in force.
Fuel gas quality. e appliance was designed
to operate with combustible gas free of impuri-
ties; otherwise it is advisable to t special lters
upstream of the appliance to restore the purity
of the fuel.
Storage tanks (in case of supply from LPG
depot).
- New LPG storage tanks may contain residual
inert gases (nitrogen) that degrade the mixture
delivered to the appliance casing functioning
anomalies.
- 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.
1.5 HYDRAULIC CONNECTION.
Attention: in order not to void the condensa-
tion module warranty, before making the boiler
connections, carefully wash the heating system
(pipes, radiators, etc.) with special pickling or
descaling products to remove any deposits that
could compromise correct boiler operation.
A chemical treatment of the thermal system
water is required, in compliance with the tech-
nical standards in force, in order to protect the
system and the appliance from deposits (e.g.,
lime scale), slurry or other hazardous deposits.
In order not to void the heat exchanger warranty,
you are required to comply with what has been
prescribed in paragraph 1.20.
Water connections must be made in a rational
way using the couplings on the boiler template.
Attention: Immergas declines all liability in the
event of damage caused by the inclusion of auto-
matic lling that is not its own brand.
In order to meet the system requirements es-
tablished by the technical regulation in force in
relation to the pollution of drinking water, we
recommend installing the IMMERGAS anti-
backow kit to be used upstream of the cold
water inlet connection of the boiler. It is also
recommended that the heat transfer uid (e.g.
water +glycol) entered in the primary circuit
of the boiler (heating circuit), complies with the
local regulations in force.
Attention: to preserve the duration and the ef-
ciency features of the appliance, in the presence
of water whose features can lead to the deposit of
scale, installation of the “polyphosphate dispenser”
kit is recommended.
3-bar safety valve. Discharge of the safety valve
has been conveyed to the condensate drain trap.
Consequently, in the event of valve intervention,
the discharged liquid will end up in the sewer
system through the drainpipe of the condensate
drain trap.
e appliance has anyhow been provided with
a drain tting (ref. 3 g. 1-3) with a relative cap
to check the presence of liquid in the drainage
circuit and to check the 3-bar safety valve.
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, with an internal Øof
at least 13 mm. e system connecting the appli-
ance to the drainage system must be carried out
in such a way as to prevent freezing of the liquid
contained in it. Before appliance ignition, ensure
that the condensate can be correctly removed.
Aer rst ignition, check that the drain trap is
lled with condensate (para. 1.22). Also, comply
with national and local regulations on discharg-
ing waste waters.
1
2
3
V

8
1-5
2
b
a
2
1
1
a
3
c
d
1-4
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.6ELECTRICAL CONNECTION.
e appliance has an IPX5D protection degree,
electrical safety of the appliance is reached only
when it is connected properly to an ecient
earthing system as specied by current safety
standards.
Attention: Immergas S.p.A. declines any respon-
sibility for damage or physical injury caused by
failure to connect the boiler to an ecient earth
system or failure to comply with the reference
standards.
•Open the control panel connections compart-
ment (Fig. 1-5).
To carry out electrical connections, all you have
to do is open the connections compartment as
follows.
- Remove the front panel (Fig. 3-15b).
- Remove the cover (b g. 1-4).
1) Loosen the two screws (a).
2) Press the two hooks on the cover (b).
3) Remove the cover (b) from the control
panel (c).
- At this point, it is possible to access the terminal
board (d).
Also ensure that the electrical installation cor-
responds to maximum absorbed power speci-
cations as shown on the boiler data nameplate.
Boilers are supplied complete with an “X” type
power cable without plug. e power supply
cable must be connected to a 230V 10% / 50Hz
mains supply respecting L-N polarity and earth
connection; , this network must also have a
multi-pole circuit breaker with class III over-
voltage category.
To protect from possible dispersions of DC
voltage one must provide a type A dierential
safety device.
When replacing the power supply cable, contact
a qualied rm (e.g. the Authorised Aer-Sales
Technical Assistance Service). e power cable
must be laid as shown (Fig. 1-3).
In the event of mains fuse replacement on the
P.C.B., use a 3.15A quick-blow fuse. For the main
power supply to the appliance, never use adapt-
ers, multiple sockets or extension leads.
N.B.: connect terminals 36 and 37 to electrically
connect the boiler to the storage tank unit, elimi-
nating resistance R8 in the boiler (Fig. 3-2).
Installation with system operating at direct
low temperature. e boiler can directly supply
a low-temperature system by setting the ow
temperature adjustment range “t0” and “t1”
(Par. 3.12). In this situation it is good practice
to insert a relevant safety kit (optional) made up
from a thermostat (with adjustable temperature).
Execute connection to terminal boards 14 and 15,
eliminating jumper X70 (Fig. 3-2). e thermo-
stat must be positioned on the system ow pipe
at a distance of at least 2 metres from the boiler.
1.7REMOTE CONTROLS AND
ROOM CHRONO THERMOSTATS
(OPTIONAL).
e boiler is prepared for the application of room
chrono-thermostats or remote controls, which
are available as optional kits (Fig. 1-5).
All Immergas chrono-thermostats are connected
with 2 wires only. Carefully read the user and
assembly instructions contained in the acces-
sory kit.
•On/O Immergas digital chrono-thermostat.
e chrono-thermostat allows:
- set two room temperature value: one for
daytime (comfort temperature) and one for
night-time (reduced temperature);
- set a weekly program with four daily switch
on and switch o times;
- select the required operating mode from the
various possible alternatives:
•manual operation (with adjustable tempera-
ture).
•automatic operation (with set programme).
•forced automatic operation (momentarily
changing the temperature of the automatic
programme).
e chrono-thermostat is powered by two 1.5V
LR 6 type alkaline batteries.
•Comando Amico Remoto Remote Control De-
vice V2 (CARV2) with climate chrono-thermostat
function. In addition to the functions described
in the previous point, the CARV2 panel enables
the user to control all the important informa-
tion regarding operation of the appliance and
the heating system with the opportunity to eas-
ily intervene on the previously set parameters,
without having to go to where the appliance
is installed. e panel is provided with self-
diagnosis to display any boiler functioning
anomalies. The climate chrono-thermostat
incorporated into the remote panel enables
the system ow 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. e CARV2 is
fed directly by the boiler by means of the same 2
wires used for the transmission of data between
the boiler and device.
Important: If the system is divided into zones
using the relevant kit, the CARV2 must be used
with its climate thermostat function disabled, i.e.
it must be set to On/O mode.
Comando Amico Remoto Remote Control V2
or On/O chrono-thermostat electrical con-
nections (Optional). e operations described
below must be performed aer having removed
the voltage from the appliance. Any thermostat
or On/O environment chrono-thermostat must
be connected to clamps 40 and 41 eliminating
jumper X40 (Fig. 3-2). Make sure that the On/
O thermostat contact is of the “clean” type, i.e.
independent of the mains voltage, otherwise the
P.C.B. would be damaged. Any Comando Amico
Remoto Remote Control V2 must be connected to
clamps 44 and 41 eliminating jumper X40 on the
P.C:B., paying attention not to invert the polarity
in the connections (Fig. 3-2).
Important: if the Comando Amico Remoto
Remote Control V2 or any other On/O chrono-
thermostat is used, arrange two separate lines in
compliance with current regulations regarding
electrical systems. No boiler pipes must ever be
used to earth the electric system or telephone
lines. Ensure elimination of this risk before mak-
ing the boiler electrical connections.

9
1-6 1-7
45
31
58
INSTALLERUSER
MAINTENANCE TECHNICIAN
Position of the central heating tem-
perature user adjustment
MAX
MIN
EXTERNAL PROBE
Correction law of the ow temperature depending on the external temperature
and user adjustments of the central heating temperature.
1.8 EXTERNAL TEMPERATURE PROBE
(OPTIONAL).
e boiler is designed for the application of the
external temperature probe (Fig. 1-6), which is
available as an optional kit. Refer to the relative
instruction sheet for positioning of the external
probe.
e probe can be connected directly to the boiler
electrical system and allows the max. system
ow temperature to be automatically decreased
when the external temperature increases, in
order to adjust the heat supplied to the system
according to the change in external temperature.
e external probe always operates when con-
nected, regardless of the presence or type of room
chrono-thermostat used and can work in combi-
nation with Immergas chrono-thermostats. e
correlation between system ow temperature
and external temperature is determined by the
position of the central heating selector switch on
the boiler control panel (or on the CARV2 control
panel if connected to the boiler) according to
the curves shown in the diagram (Fig. 1-7). e
electric connection of the external probe must be
made on clamps 38 and 39 on the terminal board
in the boiler control panel (Fig. 3-2).

10
(A)
(B)
1-8
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.9 IMMERGAS FLUE SYSTEMS.
Immergas supplies various solutions separately
from the boilers regarding the installation of
air intake terminals and ue exhaust, which are
fundamental for boiler operation.
Attention: the boiler must be installed ex-
clusively with an original Immergas “Green
Range” inspectionable air intake device and
fumes extraction system made of plastic, as
required by the regulations in force.
e plastic pipes cannot be installed outdoors,
for tracts longer than 40 cm, without suitable
protection from UV rays and other atmos-
pheric agents.
is system can be identied by an identica-
tion mark and special distinctive marking
bearing the note: “only for condensing boilers”.
•Resistance factors and equivalent lengths. Each
ue component has a Resistance Factor based
on experimental tests and specied in the table
below. e Resistance Factor for individual
components is independent from the type of
boiler on which it is installed and has a dimen-
sionless size. It is however, conditioned by the
temperature of the uids that pass through the
pipe and therefore, varies according to applica-
tions for air intake or ue 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, can
be obtained from the ratio between the relative
Resistance Factors.
All boilers have an experimentally obtainable
maximum Resistance Factor equal to 100.e
maximum Resistance Factor allowed cor-
responds to the resistance encountered with
the maximum allowed pipe length for each
type of Terminal Kit. is information allows
calculations to be made to verify the possibility
of setting up various ue congurations.
•Positioning the gaskets (black) for “green
range” ue systems. Position the gasket cor-
rectly (for bends and extensions) (Fig. 1-8):
- gasket (A) with notches, to use for bends;
- gasket (B) without notches, to use for exten-
sions;
N.B.: if necessary, to ease the push-fitting,
spread the elements with commonly-used talc.
•Coupling extension pipes and concentric
elbows. To install push-tting extensions with
other elements of the ue, proceed as follows:
Install the concentric pipe or elbow with the
male side (smooth) on the female side (with lip
seal) to the end stop on the previously installed
element in order to ensure sealing eciency of
the coupling.
Attention: if the exhaust terminal and/or
concentric extension pipe needs shortening,
consider that the internal duct must always
protrude by 5 mm with respect to the external
duct.
•N.B.: for safety purposes, do not obstruct the
boiler intake/exhaust terminal, even temporar-
ily.
•N.B.: when installing horizontal pipes, a mini-
mum inclination of 3% must be maintained and
a section clip with pin must be installed every
3 metres.
1.10 TABLES OF RESISTANCE FACTORS
AND EQUIVALENT LENGTHS.
TYPE OF DUCT
Resistance
Factor
(R)
Equivalent length
in m of concentric
pipe Ø80/125
Concentric pipe Ø80/125 m 1 2.1 1
Concentric bend 90° Ø80/125 3.0 1.4
Concentric bend 45° Ø80/125 2.1 1
Terminal complete with concentric
horizontal intake-exhaust Ø80/125 2.8 1.3
Terminal complete with concentric
vertical intake-exhaust Ø80/125 3.6 1.7
Concentric bend 90° Ø80/125 with
inspection 3.4 1.6
Stub pipe with inspection Ø80/125 3.4 1.6

11
INSTALLERUSER
MAINTENANCE TECHNICIAN
TYPE OF DUCT
Resistance
Factor
(R)
Equivalent length
in m of concentric
pipe Ø60/100
Equivalent
length in metres
of pipe Ø80
Equivalent length
in metres of pipe
Ø60
Equivalent length
in m of concentric
pipe Ø80/125
Concentric pipe Ø60/100
m 1
Intake and
Exhaust 6.4 m 1 Intake m 7.3 Exhaust m 1.9 m 3.0
Exhaust m 5.3
Concentric bend 90° Ø
60/100
Intake and
Exhaust 8.2 m 1.3 Intake m 9.4 Exhaust m 2.5 m 3.9
Exhaust m 6.8
Concentric bend 45° Ø
60/100
Intake and
Exhaust 6.4 m 1 Intake m 7.3 Exhaust m 1.9 m 3.0
Exhaust m 5.3
Terminal complete with
concentric horizontal
intake-exhaust Ø60/100
Intake and
Exhaust 15 m 2.3
Intake m 17.2
Exhaust m 4.5 m 7.1
Exhaust m 12.5
Concentric horizontal
intake- exhaust terminal
Ø60/100
Intake and
Exhaust 10 m 1.5
Intake m 11.5
Exhaust m 3.0 m 4.7
Exhaust m 8.3
Terminal complete with
concentric vertical intake-
exhaust Ø60/100
Intake and
Exhaust 16.3 m 2.5
Intake m 18.7
Exhaust m 4.9 m 7.7
Exhaust m 13.6
Concentric vertical intake-
exhaust terminal Ø60/100
Intake and
Exhaust 9 m 1.4
Intake m 10.3
Exhaust m 2.7 m 4.3
Exhaust m 7.5
Pipe Ø80 m 1 Intake 0.87 m 0.1 Intake m 1.0 Exhaust m 0.4
m 0.4
m 0.5
Exhaust 1.2 m 0.2 Exhaust m 1.0
Complete intake terminal
Ø80 m 1 Intake 3 m 0.5 Intake m 3.4 Exhaust m 0.9 m 1.4
Intake terminal Ø80
Exhaust terminal Ø80
Intake 2.2 m 0.35 Intake m 2.5 Exhaust m 0.6
m 1
m 0.9
Exhaust 1.9 m 0.3 Exhaust m 1.6
Bend 90° Ø80 Intake 1.9 m 0.3 Intake m 2.2 Exhaust m 0.8
m 0.9
m 1.2
Exhaust 2.6 m 0.4 Exhaust m 2.1
Bend 45° Ø80 Intake 1.2 m 0.2 Intake m 1.4 Exhaust m 0.5
m 0.5
0.7
Exhaust 1.6 m 0.25 Exhaust m 1.3
Pipe Ø60 m 1 for ducting Exhaust 3.3 m 0.5 Intake 3.8 Exhaust m 1.0 m 1.5
Exhaust 2.7
Bend 90° Ø60 for ducting Exhaust 3.5 m 0.55 Intake 4.0 Exhaust m 1.1 m 1.6
Exhaust 2.9
Reduction Ø80/60 Intake and
Exhaust 2.6 m 0.4 Intake m 3.0 Exhaust m 0.8 m 1.2
Exhaust m 2.1
Terminal complete with
exhaust
vertical Ø60 for ducting
Exhaust 12.2 m 1.9
Intake m 14
Exhaust m 3.7m 5.8
Exhaust m 10.1

12
1-11
1-9
1-10
INSTALLERUSER
MAINTENANCE TECHNICIAN
e cover kit includes:
N° 1 ermoformed cover
N°1 Gasket clamping plate
N°1 Gasket
N°1 Gasket tightening strap
N°1 Intake hole covering plate
e terminal kit includes:
N° 1 Gasket
N° 1 Discharge ange Ø 80
N° 1 Bend 90° Ø 80
N° 1 Drain pipe Ø 80
N° 1 Wall sealing plate
1.11 OUTDOOR INSTALLATION IN A
PARTIALLY PROTECTED AREA.
N.B.: a partially protected area is one in which the
appliance is not exposed to the direct action of the
weather (rain, snow, hail, etc.).
is type of installation is only possible when
permitted by the laws in force in the appliance's
country of destination.
•Conguration type B, open chamber and
forced draught.
Using the special coverage kit one can achieve
direct air intake (Fig. 1-9) and fumes exhaust in
a single ue or directly outside. In this congura-
tion it is possible to install the boiler in a partially
protected place. In this conguration the boiler
is classied as type B23.
With this conguration:
- air intake takes place directly from the envi-
ronment in which the appliance is installed
(outside);
- the fumes exhaust must be connected to its own
single ue (B23) or ducted directly outside via
a vertical terminal for direct exhaust (B53) or
via an Immergas ducting system (B53).
The technical regulations in force must be
respected.
•Coverage kit assembly (Fig. 1-10). Remove
the two plugs and the gaskets present from
the two lateral holes with respect to the central
one. Now cover the right intake hole using the
relevant plate, xing it onto the le side using
the 2 previously-removed screws. Install the
Ø80 outlet ange on the central hole of the
boiler, taking care to insert the gasket supplied
with the kit and tighten by means of the screws
provided. Install the upper cover, xing it using
the 4 screws present in the kit, positioning the
relevant gaskets. Engage the 90° Ø80 bend
with the male end (smooth) in the female end
(with lip seal) of the Ø80 ange unit until it
stops. Introduce the gasket, making it run along
the bend. Fix it using the sheet steel plate and
tighten by means of the straps present in the
kit, making sure to block the 4 gasket aps. Fit
the male end (smooth) of the exhaust terminal
into the the female end of the bend 90° Ø80,
making sure that the relevant wall sealing plate
is already tted; this will ensure hold and join-
ing of the elements making up the kit.
Max. length of exhaust duct. e ue pipe (both
vertical or horizontal) can be extended to a max.
length of 30linear metres.
•Coupling of extension pipes. To install push-
tting extensions with other elements of the
ue, proceed as follows: Couple the pipe or
elbow with the male side (smooth) in the fe-
male side (with lip seal) to the end stop on the
previously installed element. is will ensure
sealing eciency of the coupling.
•Conguration without cover kit in a partially
protected location (type C boiler)
By leaving the side plugs tted it is possible
to install the appliance externally without the
cover kit. Installation takes place using the
Ø60/100, Ø80/125 and separator Ø80/80
concentric intake/ exhaust kits. Refer to the
paragraph relative to indoor installation. In
this conguration the upper cover kit guaran-
tees additional protection for the boiler. It is
recommended but not compulsory.

13
1-12 1-13
1-14 1-15
5
4
3
1
2
1
2
3
45
6
C13
C13 C13
C13
INSTALLERUSER
MAINTENANCE TECHNICIAN
e kit includes:
N° 1 - Gasket (1)
N° 1 - Concentric bend Ø 60/100 (2)
N° 1 - Int./exhaust concentric terminal Ø 60/100 (3)
N° 1 - Internal wall sealing plate (4)
N° 1 - External wall sealing plate (5)
e adaptor kit includes:
N° 1- Gasket (1)
N° 1 - Adaptor Ø 80/125 (2)
e Kit Ø 80/125 includes:
N° 1- Concentric bend Ø 80/125 a 87° (3)
N° 1 - Int./exhaust concentric terminal
Ø 80/125 (4)
N° 1 - Internal wall sealing plate (5)
N° 1 - External wall sealing plate (6)
e remaining kit components must not be
used
Max. 32000 mm)
Max. 31956 mm)
Max. 12900 mm)
Max. 12790 mm)
1.12 CONCENTRIC HORIZONTAL KIT
INSTALLATION.
Type C configuration, sealed chamber and
fan assisted.
e position of the terminal (in terms of dis-
tances from openings, overlooking buildings,
floor, etc.) must be in compliance with the
regulations in force.
is terminal is connected directly to the outside
of the building for air intake and ue exhaust. e
horizontal kit can be installed with the rear, right
side, le side or front outlet. For installation with
frontal outlet, one must use the xing plate and
a concentric bend coupling in order to ensure
sucient space to carry out the tests required
by law upon commissioning.
•External grid. Both the Ø60/100 and Ø80/125
intake/exhaust terminal, if properly installed, is
pleasant to look at on the outside of the build-
ing. Make sure that the external silicone wall
sealing plate is properly inserted in the wall.
N.B.: for proper system operation the terminal
with grid must be installed correctly ensuring
that, the "high" indication on the terminal is
observed during installation.
Horizontal intake-exhaust kit Ø60/100. Kit
assembly (Fig. 1-12): install the bend with ange
(2) on the central hole of the boiler, positioning
gasket (1) with the circular projections down-
wards in contact with the boiler flange, and
tighten using the screws present in the kit. Fit
the Ø60/100 (3) concentric terminal pipe with
the male side (smooth) to the female side of the
bend (2) up to the end stop; making sure that the
internal and external wall sealing plate have been
tted, this will ensure sealing and joining of the
elements making up the kit.
•Extensions for Ø60/100 horizontal kit (Fig.
1-13). e kit with this conguration can be
extended up to a max. 12.9horizontal m in-
cluding the terminal with grid and excluding
the concentric bend leaving the boiler. is
conguration corresponds to a resistance factor
of 100. In this case the special extensions must
be requested.
Immergas also provides a Ø60/100 simplied
terminal, which in combination with its exten-
sion kits allows you to reach a maximum exten-
sion of 11.9 metres.
Horizontal intake-exhaust kit Ø80/125. Kit
assembly (Fig. 1-14): to install the kit Ø80/125
one must use the anged adapter kit in order
to install the ue system Ø80/125. Install the
anged adaptor (2) on the central hole of the
boiler, positioning gasket (1) with the circular
projections downwards in contact with the boiler
ange, and tighten using the screws contained in
the kit. Engage the bend (3) with the male side
(smooth) to the end stop on the adapter (1). Fit
the Ø80/125 (5) concentric terminal pipe with
the male side (smooth) to the female side of the
bend (4) (with lip seals) up to the end top; making
sure that the internal (6) and external wall sealing
plate (7) have been tted, this will ensure sealing
and joining of the elements making up the kit.
•Extensions for horizontal kit Ø80/125 (Fig.
1-15). e kit with this conguration can be
extended up to a max. length of 32 m, includ-
ing the terminal with grid and excluding the
concentric bend leaving the boiler. If addi-
tional components are assembled, the length
equivalent to the maximum allowed must be
subtracted. In this case the special extensions
must be requested.

14
C33
C33
C33
C33
1-17
1-191-18
7
46
5
1
2
3
1
2
3
4
5
6
7
1-16
INSTALLERUSER
MAINTENANCE TECHNICIAN
e Kit includes:
N° 1 - Gasket (1)
N° 1 - Female concentric ange (2)
N° 1 - Wall sealing plate (3)
N° 1 - Aluminium tile (4)
N° 1 - Int./exhaust concentric pipe
Ø 60/100 (5)
N° 1 - Fixed half-shell (6)
N° 1 - Mobile half-shell (7)
e adaptor kit includes:
N° 1 - Gasket (1)
N° 1 - Adaptor Ø 80/125 (2)
e Kit Ø 80/125 includes:
N° 1 - Wall sealing plate (3)
N° 1 - Aluminium tile (4)
N° 1 - Fixed half-shell (5)
N° 1 - Mobile half-shell (6)
N° 1 - Int./exhaust concentric
pipe Ø 80/125 (7)
e remaining kit components
must not be used
1.13 CONCENTRIC VERTICAL KIT
INSTALLATION.
Type C configuration, sealed chamber and
fan assisted.
Concentric vertical intake and exhaust kit. is
vertical terminal is connected directly to the out-
side of the building for air intake and ue exhaust.
N.B.: the vertical kit with aluminium tile enables
installation on terraces and roofs with a maxi-
mum slope of 45% (approx 25°) and the height
between the terminal cap and half-shell (374 mm
for Ø60/100 and 260 mm for Ø80/125) must
always be observed.
Vertical kit with aluminium tile Ø60/100.
Kit assembly (Fig. 1-16): install the concentric
ange (2) on the central hole of the boiler, posi-
tioning gasket (1) with the circular projections
downwards in contact with the boiler ange, and
tighten using the screws contained in the kit.
Installation of the fake aluminium tile: replace
the tiles with the aluminium sheet (4), shaping
it to ensure that rainwater runs o. Position
the xed half-shell (6) on the aluminium tile
and insert the intake-exhaust pipe (5). Fit the
Ø60/100 (3) concentric terminal pipe with the
male side (5) (smooth) into the ange (2) up to
the end stop; making sure that the wall sealing
plate has been tted (3), this will ensure sealing
and joining of the elements making up the kit.
NOTE: when the boiler is installed in areas where
very cold temperatures can be reached, a special
anti-freeze kit is available that can be installed as
an alternative to the standard kit.
•Extensions for vertical kit Ø60/100 (Fig. 1-17).
e kit with this conguration can be extended
to a max. straight vertical length of 14.4 m,
including the terminal. This configuration
corresponds to a resistance factor of 100. In
this case specic extensions must be requested.
Vertical kit with aluminium tile Ø80/125.
Kit assembly (Fig. 1-18): to install the kit Ø
80/125 one must use the anged adapter kit in
order to install the ue system Ø80/125. Install
the anged adaptor (2) on the central hole of the
boiler, positioning gasket (1) with the circular
projections downwards in contact with the boiler
ange and tighten using the screws contained
in the kit. Installation of the fake aluminium
tile: replace the tiles with the aluminium sheet
(4), shaping it to ensure that rainwater runs o.
Position the xed half-shell (5) on the aluminium
tile and insert the intake-exhaust pipe (7). Fit the
Ø80/125 concentric terminal pipe with the male
side (smooth) to the female side of the adapter (1)
(with lip gaskets) up to the end stop; making sure
that the wall sealing plate (3) has been tted, this
will ensure sealing and joining of the elements
making up the kit.
•Extensions for vertical kit Ø80/125 (Fig. 1-19).
e kit with this conguration can be extended
up to a max. length of 32 m including the ter-
minal. If additional components are assembled,
the length equivalent to the maximum allowed
must be subtracted. In this case specic exten-
sions must be requested.
Max. 14400 mm)
Max. 45%
Max. 32000 mm)
Max. 45%

15
C83
1-22
C43
1-211-20
1
4
79
556
7
8
3
2
S
A
C53*- C83
INSTALLERUSER
MAINTENANCE TECHNICIAN
e kit includes:
N° 1 - Exhaust gasket (1)
N° 1 - Flange seal gasket (2)
N° 1 - Female intake ange (3)
N° 1 - Female drain ange (4)
N° 2 - Bend 90° Ø 80(5)
N° 1 - Intake terminal Ø 80(6)
N° 2 - Internal wall sealing plates (7)
N° 1 - External wall sealing plate (8)
N° 1 - Drain pipe Ø 80(9)
*to er complete C53 conguration also provide for a roof discharge termi-
nal.
minimum slope 1.5%
1.14 SEPARATOR KIT INSTALLATION.
Type C configuration, sealed chamber and
fan assisted.
Separator kit Ø80/80. is kit allows air to come
in from outside the building and the fumes to exit
from the chimney or ue through divided ue
exhaust and air intake pipes. Combustion prod-
ucts are expelled from pipe (S) (in plastic, so as
to resist acid condensate). Air is taken in through
duct (A) for combustion (this is also in plastic).
e intake pipe (A) can be installed either on the
right or le hand side of the central exhaust pipe
(S). Both ducts can be routed in any direction.
•Kit assembly (Fig. 1-20): install ange (4) on
the central hole of the boiler, positioning gasket
(1) with the circular projections downwards
in contact with the boiler ange, and tighten
using the hex screws with at tip contained in
the kit. Remove the at ange present in the
lateral hole with respect to the central one (ac-
cording to needs) and replace it with the ange
(3), positioning the gasket (2) already present in
the boiler and tighten using the supplied self-
threading screws. Fit the male end (smooth) to
the bends (5) in the female end of the anges
(3 and 4). Fit the intake terminal (6) with the
male side (smooth) in the female side of the
bend (5) up to the end stop, ensuring that the
internal and external wall sealing plates are
tted. Fit the exhaust pipe (9) with the male
side (smooth) to the female side of the bend
(5) up to the end stop; making sure that the
internal wall sealing plate has been tted, this
will ensure sealing and joining of the elements
making up the kit.
•Installation clearances (Fig. 1-21). e mini-
mum installation clearance measurements of
the Ø80/80 separator terminal kit have been
stated in some limit conditions.
•Extensions for separator kit Ø80/80. The
maximum vertical straight length (without
bends) that can be used for Ø80 intake and
exhaust pipes is 41 metres, regardless from
whether they are used for intake or exhaust.
e maximum horizontal straight length (with
bend in suction and in exhaust) that can be
used for Ø80 intake and exhaust pipes is 36
metres, regardless from whether they are used
for intake or exhaust.
N.B.: to favour the removal of possible conden-
sate forming in the exhaust pipe, tilt the pipes
towards the boiler with a minimum slope of
1.5% (Fig. 1-22).

16
12
3
3
3
4567
689
A
10
11
12
12
1-24
1-23
A
B
A
C
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.15 ADAPTOR C9 KIT INSTALLATION.
is kit allows an Immergas boiler to be installed
in "C93" conguration, with combustion air intake
directly from the sha where the ue gas exhaust
is, obtained by means of a ducting system.
System composition.
e system must be combined with the following
components (sold separately) to be functional
and complete:
- kit C93 Ø100 or Ø125 version
- ducting kit Ø60 or Ø80
- fumes exhaust kit Ø60/100 or Ø80/125 con-
gured according to the installation and type
of boiler.
Kit Assembly.
- Mount the components of kit "C9" on the door
(A) of the ducting system (Fig. 1-24).
- (Version Ø125 only) mount the anged adap-
tor (11) interposing the concentric gasket (10)
on the boiler, tting it with the screws (12).
- Mount the ducting system as described in the
relative instructions sheet.
- Calculate the distances between the boiler drain
and the bend of the ducting system.
- Prepare the boiler ue system, making sure that
the internal pipe of the concentric kit is tted
properly in the bend of the ducting system
(quota "X" g. 1-25), while the external pipe
must be tted on the adaptor until it stops (1).
N.B.: to encourage the removal of possible
condensate forming in the exhaust pipe, tilt
the pipes towards the boiler with a minimum
slope of 1.5%.
- Mount the cover (A) complete with adaptor (1)
and caps (6) on the wall and assemble the ue
system to the ducting system.
N.B.: (version Ø125 only) before assembly
check the gaskets are in the right position. In
the event component lubrication (already car-
ried out by the manufacturer) is not sucient,
remove the residual lubricant using a dry cloth,
then to ease tting coat the parts with common
or industrial talc.
Once all components have been assembled prop-
erly, the exhaust fumes will be expelled via the
ducting system; the combustion air for normal
boiler operation will be aspirated directly by the
sha (Fig. 1-25).
Technical data.
- e dimensions of the shas must ensure a
minimum gap between the outer wall of the
smoke duct and the inner wall of the sha: 30
mm for circular section shas and 20 mm in
the event of a square section sha (Fig. 1-23).
- Maximum 2 changes of direction are allowed
on the vertical section of the ue system with
a maximum clearance angle of 30° with respect
to the vertical.
- e maximum vertical extension using a Ø60
ducting system is 13 m, the maximum exten-
sion includes 1 bend Ø60/10 at 90°, 1 m of
horizontal pipe 60/100, 1 90° ducted bend Ø
60 and the roof terminal for ducting.
To determine the C93 ue system in congura-
tions other than that described (Fig. 1-25)
one must consider that 1 metre of ducted pipe
according to the indications described has a
resistance factor equal to 4.9.
- e maximum vertical extension using a Ø80
ducting system is 28 m, the maximum exten-
sion includes 1 adapter 60/100 to 80/125, 1 87°
bend Ø80/125, 1 m of horizontal pipe 80/125,
1 90° ducted bend Ø80 and the roof terminal
for ducting.
To determine the C93 ue system in congura-
tions other than that described (Fig. 1-25) one
must consider the following pressure drops:
- 1 m of concentric pipe Ø80/125 = 1 m of
ducted pipe;
- 1 87° bend = 1.4 m of ducted pipe;
Consequently one must subtract the equivalent
length of the part added to the 28 m available.
Kit composition:
Ref. Qty Description
1 1 Door adaptor Ø100 or Ø125
2 1 Door gasket made of neoprene
3 4 Screws 4.2 x 9 AF
4 1 Hex headed screw M6 x 20
5 1 Flat nylon washer M6
6 2 Door hole closure metal-sheet plate
plug
7 1 Plug gasket made of neoprene
8 1 Toothed washer M6
9 1 Nut M6
10 1 (kit 80/125) Concentric gasket Ø60-100
11 1 (kit 80/125) Flanged adapter Ø80-125)
12 4 (kit 80/125) Hex headed screws M4 x 16 slotted
- 1 (kit 80/125) Bag of lubricating talc
Installation drawings key:
Unique identication of the component in
the kit
Identication of the component not supplied
in this kit
1
A
Supplied separately:
Ref. Qty Description
A 1 Ducting kit door
Rigid Ø80
ducting (A)
mm
SHAFT
(B) mm
SHAFT
(C) mm
86 126 146
Flexible Ø80
ducting (A)
mm
SHAFT
(B) mm
SHAFT
(C) mm
90 130 150
Rigid Ø60
ducting (A)
mm
SHAFT
(B) mm
SHAFT
(C) mm
66 106 126

17
1-26
C53 C93
1-25
X
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.16DUCTING OF FLUES OR
TECHNICAL SLOTS.
Ducting is an operation through which, via
the introduction of one or more relevant pipes,
one achieves a system for the evacuation of the
combustion products of a gas appliance, made up
from the coupling of an existing or new ducting
pipe with a chimney, ue or technical slot (also
in new buildings) (Fig. 1-26). Ducting requires
ducts declared to be suitable for the purpose by
the manufacturer, following the installation and
user instructions, provided by the manufacturer
and the requirements of the standards in force.
Immergas ducting system. e Ø 60rigid and
Ø 80exible “Green Range” ducting systems must
only be used for domestic use and 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 environ-
mental conditions, according to current regula-
tions (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 must be per-
formed according to the indications supplied
by the manufacturer and in compliance with
the provisions in force.
- e max. possible length of the Ø60 exible
ducting vertical section is equal to 22 m. is
length is obtained considering the complete
Ø80 exhaust terminal, 1m of Ø80 pipe in
exhaust, two 90° Ø80 bends at boiler outlet.
- e max. possible length of the Ø80 exible
ducting vertical section is equal to 30 m. is
length is obtained considering the complete
exhaust terminal, 1m of Ø80 pipe in exhaust,
two 90° Ø80 bends at boiler outlet for connect-
ing to the ducting system and two direction
changes of the exible hose inside the chimney/
technical slot.
- e maximum possible length of the Ø80 rigid
ducting vertical section is equal to 30 m. is
length is obtained considering the complete
Ø80 exhaust terminal, 1m of Ø80 pipe in ex-
haust, two 90° Ø80 bends on the boiler outlet.
1.17CONFIGURATION TYPE B, OPEN
CHAMBER AND FAN ASSISTED FOR
INDOORS.
e appliance can be installed inside buildings
in 23 or B53 mode; in this case, all technical rules
and national and local regulations in force, must
be complied with.
- Type B open chamber boilers must not be
installed in places where commercial, artisan
or industrial activities take place, which use
products that may develop volatile vapours
or substances (e.g. acid vapours, glues, paints,
solvents, combustibles, etc.), as well as dusts
(e.g. dust deriving from the working of wood,
coal nes, cement, etc.), which may be harm-
ful for the components of the appliance and
jeopardise operation.
- In B23 and B53 conguration, the boilers must
not be installed in bedrooms, bathrooms or in
studio ats.
- e installation of appliances in B23 and B53 con-
gurations are only recommended outdoors (in
a partially-protected place) or in places that
are not lived in and which are permanently
ventilated.
e suitable kit referred to in paragraph 1.11
must be used for installation.
1.18 FLUE GAS EXHAUST TO FLUE/
CHIMNEY.
Flue exhaust does not necessarily have to be
connected to a branched type traditional ue.
e ue exhaust, for boiler clots installed in C
conguration, can be connected to a special LAS
type multiple ue. For B congurations, exhaust
is only allowed into individual chimney or di-
rectly into the external atmosphere via a suitable
terminal. e multiple ues and the combined
ues must also only be connected to type C ap-
pliances of the same type (condensing), having
nominal heat inputs that do not dier by more
than 30% less with respect to the maximum that
can be attached and powered by the same fuel.
e thermo-uid dynamic features (ue ow
rate, % of carbon dioxide, % humidity etc....) of
the appliances attached to the same multiple ues
or combined ues, must not dier by more than
10% with respect to the average boiler attached.
Multiple and combined ues must be specially
designed according to the calculation method
and requirements of the technical standards
in force, by a professionally qualied company.
Chimney or ue sections for connection of the
ue exhaust pipe must comply with requisites of
technical standards in force.
1.19 FLUES, CHIMNEYS, CHIMNEY POTS
AND TERMINALS.
e ues, chimneys and chimney pots for the
evacuation of combustion products must be in
compliance with applicable standards. Chimneys
and roof-installed exhaust terminals must com-
ply with the outlet height and with the distance
from technical volumes set forth by the technical
standards in force.
Positioning the wall ue exhaust terminals. e
wall ue exhaust terminals must:
- be installed on external perimeter walls of the
building;
- be positioned according to the minimum dis-
tances specied in current technical standards.
Combustion products exhaust of natural
draught or fan assisted appliances in open-top
closed environments. In spaces closed on all
sides with open tops (ventilation pits, court-
yards etc.), direct combustion product exhaust
is allowed for natural draught or fan assisted gas
appliances with a heat input range from 4 to 35
kW, provided the conditions as per the current
technical standards are respected.

18
1-27
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.20 WATER TREATMENT SYSTEM
FILLING.
As already mentioned in the previous para-
graphs, a chemical treatment of the thermal
system water is required, in compliance with the
local standards in force.
e parameters that inuence the duration and
proper operation of the heat exchanger are the
water's PH, hardness, conductivity, and oxygen,
together with the system's processing residues
(any welding residues), any oil present and cor-
rosion products that can, in turn, cause damage
to the heat exchanger.
In order to prevent this from happening, you are
recommended to:
- Before installation on new systems as well as
old ones, clean the system with clean water to
eliminate solid residues contained therein.
- Clean the system with a chemical treatment:
- Clean the new system with a suitable cleaning
device (for example Sentinel X300, Fernox
Cleaner F3 or Jenaqua 300) combined with
thorough washing.
- Clean the old system with a suitable cleaning
device (for example Sentinel X400 or X800,
Fernox Cleaner F3 or Jenaqua 400) combined
with thorough washing.
- Check the maximum hardness and quantity
of lling water referring to the graphics (Fig.
1-27). If the contents and hardness of the water
are below the indicated curve, no specic treat-
ment is required; otherwise, to limit the content
of calcium carbonate, you must provide for
water-lling treatment.
- For lling, you are not allowed to use water
soened with the use of ionic-exchange resins
or distilled water.
- Should you be required to provide for water
treatment, this should be carried out by
completely desalinating the lling water. As
opposed to the complete soening process,
desalinating the water completely not only
removes hardening agents (Ca, Mg), but also
eliminates all other minerals to reduce water-
lling conductivity up to 10 microsiemens/
cm. Given its low conductivity, desalinated
water does not only prevent the formation of
lime scale, but also serves as protection against
corrosion.
- Insert a suitable inhibitor / passivator (for
example Sentinel X100, Fernot Protector F1,
or Jenaqua 100); if required, also insert appro-
priate antifreeze (such as for example Sentinel
X500, Fernox Alphi 11 or Jenaqua 500).
- Check electrical conduction of the water, which
should be higher than 2000 µs/cm in the case
of treated water and lower than 600 µs/cm in
the case of non-treated water.
- To prevent corrosion, the water system's PH
should be between 6.5 and 8.5.
- Check the maximum content of chlorides,
which should be less than 250 mg/l.
N.B.: for quantities and methods of use of water-
treatment products, refer to the instructions
provided by their manufacturer.
1.21 SYSTEM FILLING.
Once the boiler is connected, proceed with
system lling via the lling cock (Fig. 1-29 and
1-3). Filling is performed at low speed to ensure
release of air bubbles in the water via the boiler
and heating system vents.
e boiler has a built-in automatic venting valve
on the circulator. Check if the cap is loose. Open the
radiator vent valves.
Close radiator vent valves when only water
escapes from them.
Close the lling cock when the boiler pressure
gauge indicates approx. 1.2 bar.
N.B.: during these operations, enable the au-
tomatic vent functions on the boiler (active on
rst ignition).
1.22 CONDENSATE TRAP FILLING.
On rst lighting of the boiler, ue gas may come
out the condensate drain; aer a few minutes’
operation check that this no longer occurs. is
means that the drain trap is lled with conden-
sate to the correct level preventing the passage
of ue gas.
1.23 GAS SYSTEM START UP.
To start up the system, refer to the technical
standard in force: is divides the systems and
therefore the start-up operations into three
categories: new systems, modied systems, re-
activated systems.
In particular, for new gas systems:
- open windows and doors;
- avoid presence of sparks or open ames;
- bleed all air from the pipelines;
- check that the internal system is properly sealed
according to the specications set forth by
technical regulations in force.
1.24 BOILER START UP (IGNITION).
In order to issue the Declaration of Conformity
required by the laws in force, the following re-
quirements must be fullled to commission the
boiler (the operations listed below must only be
performed by a qualied rm and without any
unauthorised persons):
- check that the internal system is properly sealed
according to the specications set forth by
technical regulations in force;
- ensure that the type of gas used corresponds to
the boiler settings (the type of gas appears on
the display on rst electrical supply voltage, or
by checking the relative parameter “G”);
- check connection to a 230V-50Hz power
mains, correct L-N polarity and earthing con-
nection;
- check that there are external factors that may
cause the formation of fuel pockets;
- switch the boiler on and check correct ignition;
- make sure that the gas ow rate and relevant
pressure values comply with those given in the
manual (Par. 3.22);
- ensure that the safety device intervenes in the
event of gas supply failure and check the relative
intervention time;
- check the intervention of the main switch
located upstream from the boiler and in the
boiler;
- check that the intake/exhaust concentric ter-
minal (if tted) is not blocked.
- Carry out the flue test and set the relative
parameter "F0".
e boiler must not be started up even if only
one of the checks should be negative.
N.B.: only upon completing commissioning by
an installer, may an authorised rm carry out an
initial inspection of the boiler, which is required to
activate the Immergas warranty. e test certicate
and warranty is issued to the user.
N.B.: the graph refers to the
entire life cycle of the system.
erefore, also consider sched-
uled and unscheduled mainte-
nance, which involves emptying
and lling the said system.
Water hardness °F
System water litres

19
1-28
B
A
C
D
INSTALLERUSER
MAINTENANCE TECHNICIAN
Head (kPa)
A+B =Head available with by-pass closed
B =Head available with by-pass open
C+D =Power absorbed by the pump with by-pass open (dotted area)
D =Power absorbed by the pump with by-pass closed (dotted area)
Circulator pump absorbed power (W)
Flow rate (l/h)
Total head available to the system.
Speed 9
Speed 9
Speed 5
1.25 CIRCULATION PUMP.
e boilers are supplied with a variable speed
circulator pump.
In the central heating mode, the following op-
erating modes are available and can be selected
from the “P.C.B. programming” menu.
NOTE.: the ∆T can be controlled compatibly
with the characteristics of the central heating
system and of the boiler.
•Proportional head (∆T =0): the circulator
speed varies according to the power emitted
by the burner, the greater the power the greater
the speed.
•∆T Constant (∆T =5 ÷25 K): the pump speed
varies to maintain the ∆T constant between the
system ow and return according to set value
K (∆T =15 Default).
•Fixed (5 ÷9): by setting parameters “A3” and
“A4” at the same value, the pump operates at
constant speed.
N.B.: for the boiler to work properly, it is not
allowed to drop below the minimum value
indicated above.
In domestic hot water mode, the circulator pump
always runs at full speed.
Pump release. If, aer a prolonged period of
inactivity, the circulation pump is blocked, turn
the motor sha using a screwdriver. Take great
care during this operation to avoid damage to
the motor.
By-pass Regulation (part. 21 Fig. 1-29). e
boiler leaves the factory with the by-pass open.
If necessary, the by-pass can be regulated to
system requirements from minimum (by-pass
closed) to maximum (by-pass open). Adjust
using a at head screwdriver, turn clockwise
and open the by-pass, anticlockwise it is closed.
1.26KITS AVAILABLE ON REQUEST.
•System shut-off valve kits with or without
inspection lter (on request). e boiler is
designed for installation of system interception
cocks to be placed on ow and return pipes
of the connection assembly. is kit is very
useful for maintenance because it allows to
empty just the boiler without having to empty
the entire system. Moreover, the version with
lter preserves the functioning characteristics
of the boiler thanks to its inspectionable lter.
•System zone control unit kit (on request). If
the heating system is to be divided into several
zones (max. three), in order to interlock them
with separate adjustments and to keep water
ow rate high for each zone, Immergas supplies
zone system kits by request.
•External storage tank unit coupling kit (on
request). If the production of DHW is required
as well as room central heating, on request Im-
mergas supplies a kit made up from an external
cylinder unit and everything necessary for
adaptation of the boiler
•Polyphosphate dispenser kit (on request). e
polyphosphate dispenser reduces the formation
of lime-scale and preserves the original heat
exchange and domestic hot water production
conditions. e boiler is prepared for applica-
tion of the polyphosphate dispenser kit.
•Relay board (on request). e boiler is prepared
for the installation of a relay card that allows
to increase the features of the appliance and
therefore functioning possibilities.
•Cover kit (on request). If installed outdoors in a
partially protected place with direct air intake,it
is compulsory to mount the appropriate top
protection cover for the correct functioning
of the boiler and to protect it from adverse
weather conditions.
•Cycloidal lter kit (on request). e magnetic
cycloidal lter is able to detect the ferrous resi-
dues present in the system's water. anks to
the two cocks in the kit, it facilitates mainte-
nance by cleaning the lter without having to
empty the circuit.
e above-mentioned kits are supplied complete
with instructions for assembly and use.

20
1-29
INSTALLERUSER
MAINTENANCE TECHNICIAN
1.27BOILER COMPONENTS.
Key:
1 - System draining valve
2 - Storage tank return ow by-pass
3 - Gas valve
4 - Condensate drain trap
5 - System expansion vessel
6 - Air / gas mixer
7 - Manual air vent valve
8 - Delivery probe
9- Ignition / detection electrode
10- Flue probe
11 - Sample points (air A) - (ue gas F)
12 - Burner cover
13 - Safety ow probe
14 - Condensation module
15 - Fan
16 - Return probe
17 - System pressure switch
18 - Vent valve
19- Boiler circulator pump
20- 3 bar safety valve
21 - By-pass
22 - 3-way valve (motorised)
23 - 3-bar safety valve drain tting signal
24 - System lling valve