Immergas VICTRIX EXA 28 1 ERP User manual

VICTRIX EXA
28 1 ERP
32 1 ERP
IE
Instruction booklet and
warning
Installer
User
Maintenance Technician
*1.041694ENG*

2

3
INDEX
Dear Customer,................................................................................4
General recommendations.............................................................4
Safety symbols used......................................................................... 5
Personal protective equipment......................................................5
1 Boiler installation....................................................................6
1.1 Installation recommendations. .............................................6
1.2 Main dimensions. ...................................................................9
1.3 Minimum installation distances...........................................9
1.4 Antifreeze protection. ..........................................................10
1.5 Boiler connection unit. ........................................................10
1.6 Gas connection. ....................................................................11
1.7 Hydraulic connection...........................................................12
1.8 Electrical connection............................................................13
1.9 Remote controls and room chrono-thermostats
(Optional)..............................................................................14
1.10 External temperature probe (Optional).............................15
1.11 Immergas ue systems. ........................................................16
1.12 Tables of resistance factors and equivalent lengths of
“green range” ue system components. .............................17
1.13 Outdoor installation in partially protected area...............19
1.14 Internal installation using a recessed frame
with direct air intake ............................................................21
1.15 Concentric horizontal kit installation................................22
1.16 Concentric Vertical kit installation. ...................................24
1.17 Separator kit installation......................................................26
1.18 Adaptor C9 kit installation..................................................28
1.19 Ducting of ues or technical slots. .....................................30
1.20 Conguration type B, open chamber
and fan assisted for indoors.................................................31
1.21 Flue exhaust to ue/chimney...............................................31
1.22 Flues, chimneys, chimney pots and terminals..................31
1.23 System lling. ........................................................................31
1.24 Filling the condensate drain trap........................................31
1.25 Gas system start-up. .............................................................32
1.26 Boiler start up (ignition)......................................................32
1.27 Circulation pump..................................................................32
1.28 Circulation pump with new wave 3 electronics................35
1.29 Kits available on request. .....................................................37
1.30 Boiler components................................................................38
2 Use and maintenance instructions.....................................39
2.1 General warnings..................................................................39
2.2 Cleaning and maintenance..................................................41
2.3 Control panel.........................................................................41
2.4 Using the boiler.....................................................................42
2.5 Troubleshooting....................................................................43
2.6 Information menu. ...............................................................45
2.7 Boiler shutdown....................................................................46
2.8 Restore central heating system pressure............................46
2.9 Draining the system. ............................................................46
2.10 Draining the domestic hot water circuit............................46
2.11 Antifreeze protection. ..........................................................46
2.12 Cleaning the case. .................................................................46
2.13 Decommissioning.................................................................46
2.14 Gas system not used for periods over 12 months.............46
3 Instructions for maintenance and initial check................47
3.1 General warnings..................................................................47
3.2 Initial check. ..........................................................................47
3.3 Yearly appliance check and maintenance. .........................48
3.4 Boiler Hydraulic diagram....................................................49
3.5 Wiring diagram.....................................................................50
3.6 Troubleshooting....................................................................51
3.7 Converting the boiler to other types of gas.......................51
3.8 Checks following conversion to another type of gas........52
3.9 Calibration of number of fan revs. .....................................52
3.10 CO2adjustment.....................................................................52
3.11 Programming the P.C.B. ......................................................53
3.12 Solar panels coupling function. ..........................................56
3.13 “Chimney Sweep” function. ................................................56
3.14 Pump anti-block function. ..................................................56
3.15 ree-way anti-block function. ..........................................56
3.16 Radiators antifreeze function..............................................56
3.17 P.C.B. periodic self-check. ...................................................56
3.18 Automatic vent function......................................................56
3.19 Air ow rate control function. ...........................................56
3.20 Casing removal......................................................................57
4 Technical data........................................................................58
4.1 Variable heat output. ............................................................58
4.2 Combustion parameters. .....................................................58
4.3 Technical data table..............................................................59
4.4 Key for Data nameplate........................................................60
4.5 Technical parameters for combination boilers
(in compliance with Regulation 813/2013).......................61
4.6 Product che (in compliance with Regulation 811/2013)..62
4.7 Parameters for lling in the package che. .......................63

4
e manufacturer declines all liability due to printing or transcription errors, reserving the right to make any modications to its
technical and commercial documents without forewarning.
e company IMMERGAS S.p.A., with registered oce in via Cisa Ligure 95 42041 Brescello (RE), declares that the design, manu-
facturing and aer-sales assistance processes comply with the requirements of standard UNI EN ISO 9001:2015.
For further details on the product CE marking, request a copy of the Declaration of Conformity from the manufacturer, specifying the
appliance model and the language of the country.
Dear Customer,
Our compliments for having chosen a top-quality Immergas product, able to ensure well-being and safety for a long period of time. Read
the following pages carefully: you will be able to draw useful tips on the correct use of the device, compliance of which will conrm your
satisfaction with the Immergas product.
GENERAL RECOMMENDATIONS
is book contains important information for the:
Installer (section 1);
User (section 2);
Maintenance Technician (section 3).
• e user must carefully read the instructions in the specic section (section 2).
• e user must limit operations on the appliance only to those explicitly allowed in the specic section.
• e appliance must be installed by qualied and professionally trained personnel.
• e instruction booklet is an integral and essential part of the product and must be given to the new user 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.
• In compliance with the 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 professionally qualied sta, meaning sta with specic technical skills in the plant
sector, as provided for by Law.
• Improper installation or assembly of the Immergas device and/or components, accessories, kits and devices can cause unexpected
problems for people, animals and objects. Read the instructions provided with the product carefully to ensure proper installation.
• is instructions manual provides technical information for installing Immergas products. As for the other issues related to the
installation of products (e.g. safety at the workplace, environmental protection, accident prevention), it is necessary to comply
with the provisions of the standards in force and the principles of good practice.
• All Immergas products are protected with suitable transport packaging.
• e material must be stored in a dry place protected from the weather.
• Damaged products must not be installed.
• e device 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 booklet (or however supplied by the manufacturer), the manufacturer is excluded from any con-
tractual and extra-contractual liability for any damages and the device warranty is invalidated.

5
SAFETY SYMBOLS USED.
GENERIC HAZARD
Strictly follow all of the indications next to the pictogram. Failure to follow the indications can generate hazard situa-
tions resulting in possible harm to the health of the operator and user in general.
ELECTRICAL HAZARD
Strictly follow all of the indications next to the pictogram. e symbol indicates the appliance’s electrical components
or, in this manual, identies actions that can cause an electrical hazard.
MOVING PARTS
e symbol indicates the appliance’s moving components that can cause hazards.
HOT SURFACES
e symbol indicates the appliance’s very hot components that can cause burns.
SHARP SURFACES
e symbol indicates the appliance’s components or parts that can cause cuts if touched.
EARTH TERMINAL CONNECTION
e symbol identies the appliance’s earth terminal connection point.
READ AND UNDERSTAND THE INSTRUCTIONS
Read and understand the appliance’s instructions before performing any operation, carefully following the indications
provided.
INFORMATION
Indicates useful tips or additional information.
SAFETY GLOVES
PERSONAL PROTECTIVE EQUIPMENT.
SAFETY GOGGLES
SAFETY FOOTWEAR
e user must not dispose of the appliance at the end of its service life as municipal waste, but send it to appro-
priate collection centres.

OK
1
6
INSTALLER
USER
MAINTENANCE TECHNICIAN
1BOILER INSTALLATION
1.1 INSTALLATION RECOMMENDATIONS.
ATTENTION:
operators who install and service the
appliance must wear the personal
protective equipment required by ap-
plicable law.
e Victrix EXA boiler has been designed for wall
mounted installation only, to heat and produce domes-
tic hot water for domestic use and similar purposes.
e place of installation of the appliance and relative
Immergas accessories must have suitable features
(technical and structural), such as to allow for (always
in safe, ecient and comfortable conditions):
- installation (according to the provisions of technical legisla-
tion and technical regulations);
- maintenance operations (including scheduled, periodic,
routine, special);
- removal (to outdoors in the place for loading and transport-
ing the appliances and components) as well as the eventual
replacement of those 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).
By varying the type of installation the classication 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 the sealed chamber boiler for intake
of air and expulsion of ue gas.
Only professionally enabled companies are authorised to install
Immergas gas appliances.
Installation must be carried out according to regulation stand-
ards, current legislation and in compliance with local technical
regulations and the required technical procedure.
ATTENTION:
it is not permitted to install boilers that
are removed and decommissioned from
other systems. e manufacturer declines all li-
ability for damages caused by boilers removed
from other systems or for any non-conformi-
ties of such equipment.
ATTENTION:
check the environmental operating
conditions of all parts relevant to in-
stallation, referring to the values shown in the
technical data table in this booklet.
ATTENTION:
installation of the Victrix EXA boiler
when powered by LPG must comply
with the rules regarding gases with a greater
density than air (remember, as an example,
that it is prohibited to install plants powered
with the above-mentioned gas in rooms where
the oor is at a lower quota than the country
level).
ATTENTION:
if installing a kit or servicing the ap-
pliance, always empty the system’s
domestic hot water circuit rst so as not to
compromise the appliance’s electrical safety
(Par. 2.9 and 2.10).

7
INSTALLER
USER
MAINTENANCE TECHNICIAN
Before installing the appliance, ensure that it is de-
livered in perfect condition; if in doubt, contact the
supplier immediately. Packing materials (staples, nails,
plastic bags, polystyrene foam, etc.) constitute a hazard
and must be kept out of the reach of children.
If the appliance is installed inside or between cabinets, ensure
sucient space for normal servicing; for the minimum instal-
lation distances refer to Fig. 3.
It is just as important that the intake grids and exhaust
terminals are not obstructed.
It is recommended to check that no ue gas recircula-
tion is found in the air sample points (0.5% maximum
permitted CO2).
Keep all ammable objects away from the appliance (paper,
rags, plastic, polystyrene, etc.).
e minimum distance for exhaust pipes from ammable
materials must be at least 25 cm.
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
connections; otherwise, the manufacturer cannot be held re-
sponsible 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 immediately and contact an authorised
company.
Do not attempt to modify or repair the appliance alone.
Any modication to the appliance that is not explicitly indicated
in this section of the booklet is forbidden.
Installation Standards:
-this boiler can be installed outdoors
in a partially protected area. A par-
tially protected area is one in which the
boiler is not exposed to the direct ac-
tion 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 of gas appliances, ue exhaust
pipes and combustion air intake pipes is for-
bidden in places with a re risk (for example:
garages, closed parking stalls), and in poten-
tially dangerous places.
-Installation is prohibited on the verti-
cal projection of the cooking surface.
-Installation is forbidden in places/
rooms that constitute public areas of apart-
ment buildings, internal stairways or other
escape routes (e.g. oor landings, entrance
halls, etc.).
-Installation is also forbidden in places/rooms
that constitute public areas of apartment
buildings such as cellars, entrance halls, at-
tics, los, etc., unless otherwise provided for
by local regulations in force.
-ese boilers are not suitable for installation
on walls made of combustible material.
N.B.: wall mounting of the boiler must guarantee
stable and ecient support for the boiler. e
plugs (standard supply) are only to be used to x
the boiler 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.
e hex head screws supplied in the blister pack are
to be used exclusively to x the relative mounting
bracket to the wall.
ese boilers are used to heat water to below boiling
temperature in atmospheric pressure.
ey must be connected to a central heating system
and domestic hot water circuit suited to their perfor-
mance and capacity.

8
INSTALLER
USER
MAINTENANCE TECHNICIAN
Riskofdamageduetocorrosioncaused byunsuitable
combustion air and environment.
Spray, solvents, chlorine-based detergents, paints, glue,
ammonium compounds, powders and similar cause
product and ue duct corrosion.
- Check that combustion air power supply is free from
chlorine, sulphur, powders, etc.
- Make sure that no chemical substances are stored in the place
of installation.
- If you want to install the product in beauty salons, paint
workshops, carpenter’s shop, cleaning companies or
similar, choose a separate installation area that ensures
combustion air supply that is free from chemical substances.
- Make sure the combustion air is not fed from chimneys that
were used with gas boilers or other heating devices. In fact, these
may cause an accumulation of soot in the chimney.
Risk of material damageaer usingspraysandliquids
to search for leaks
Leak sprays and liquids clog the reference hole PR (Ref.
4 Fig. 40) of the gas valve, damaging it irreparably.
During installation and maintenance, do not use spray
or liquids in the upper area of the gas valve (side refer-
ring to the electric connections)
Filling the condensate drain trap.
on rst lighting of the boiler, ue gas may
come out from the condensate drain; aer
a few minutes’ operation, check that this no lon-
ger occurs. is means that the drain trap is lled
with condensate to the correct level preventing
the passage of ue gas.
ATTENTION:
-type B open chamber boilers must not
be installed in places where commer-
cial, 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 damaging for the components
of the appliance and jeopardise functioning.
-Unless otherwise provided for by local reg-
ulations in force, congurations B23 and B53:
the boilers must not be installed in bedrooms,
bathrooms or bedsits. ey must neither be
installed in rooms containing solid fuel heat
generators nor in rooms communicating with
said rooms.
-e installation rooms must be permanently
ventilated, in compliance with the local reg-
ulations in force (at least 6cm2for every kW
of installed heat input, except in the event of
any increases needed for electro-mechanical
vacuum cleaners or other devices that could
put the installation room under vacuum).
-Installation of appliances in B23 and B53 con-
guration is recommended in non-residential
premises and which are permanently ventilat-
ed.
ATTENTION:
failure to comply with the above implies
personal responsibility and invalidates
the warranty.

2
3
9
INSTALLER
USER
MAINTENANCE TECHNICIAN
Key:
A - 450 mm
B - 350 mm
C - 30 mm
D - 30 mm
E - 350 mm
1.2 MAIN DIMENSIONS.
1.3 MINIMUM INSTALLATION DISTANCES.
Key:
V - Electrical connection
G - Gas supply
AC - Domestic hot water outlet
ACV- Solar valve kit D.H.W. inlet (optional)
AF - Domestic cold water inlet
SC - Condensate drain (minimum internal diameter Ø 13 mm)
R - System return
M - System ow
Height
(mm)
Width
(mm)
Depth
(mm)
763 440 303
CONNECTIONS
GAS DOMESTIC
HOT WATER SYSTEM
GAC AF R M
3/4” 1/2” 1/2” 3/4” 3/4”

4
V1
2
3
10
INSTALLER
USER
MAINTENANCE TECHNICIAN
1.4 ANTIFREEZE PROTECTION.
Minimum temperature -5°C.
e boiler comes standard with an antifreeze function
that activates 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.
If the boiler is installed in a place where the temperature drops
below -5°C, the appliance can freeze.
To prevent the risk of freezing follow the instructions 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
manufacturer 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 scrupu-
lously regarding the percentage necessary with respect to the
minimum temperature at which the system must be kept.
Attention: the excessive use of glycol could jeopardise the
proper functioning of the appliance.
- An aqueous solution must be made with potential pollution
class of water 2 (EN 1717:2002 or local standards in force).
- e materials used for the central heating circuit of Immergas
boilers withstand ethylene and propylene glycol based anti-
freeze liquids (if the mixtures are prepared perfectly).
- For life and possible disposal, follow the supplier’s instruc-
tions.
- Protect the domestic hot water circuit against freezing by
using an accessory that is supplied on request (antifreeze kit)
comprising two electric heating elements, the relevant wir-
ing and a control thermostat (carefully read the installation
instructions contained in the accessory 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 electricity 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 interruption of the
electrical power supply and failure to comply with that stated
on the previous pages.
N.B.: if the boiler is installed in places where the
temperature falls below 0°C the domestic hot wa-
ter and central heating attachment pipes must be
insulated.
Note: the antifreeze systems described in this chap-
ter are only to protect the boiler. e presence of
these functions and devices does not exclude the possibility
of parts of the system or domestic hot water circuit outside
the boiler from freezing.
1.5 BOILER CONNECTION UNIT.
e connection unit, which is composed of all the required ac-
cessories to connect the appliance’s hydraulic and gas system, is
furnished as an optional kit. Execute connections as indicated in
the relative instructions che by using the connections represented
in g. 4.
Attention: when installing the connection kit (optional), it is com-
pulsory to insert a at gasket on the gas and hot water outlet ttings.
Key:
V - Electrical connection
1 - Filling cock
2 - Draining valve
3 - Air vent valve drain

11
INSTALLER
USER
MAINTENANCE TECHNICIAN
1.6GAS CONNECTION.
Our boilers are designed to operate with methane gas (G20) and
L.P.G. Supply pipes must be the same as or larger than the 3/4”G
boiler tting.
ATTENTION:
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 nameplate). If dierent, the boiler
must be converted for operation with the other
type of gas (see converting appliance for other
gas types). It is also important to check the dy-
namic pressure of the mains (methane or LPG)
used to supply the boiler, which must comply
with EN 437and its attachment, as insucient
levels may reduce generator output and cause
discomfort to the user.
According to local regulations in force,
make sure that a gas cock is installed
upstream of each connection between
the appliance and the gas system. is cock,
if supplied by the appliance’s manufacturer,
can be directly connected to the appliance
(i.e. downstream from the pipes connecting
the system to the appliance), according to the
manufacturer’s instructions.
e Immergas connection unit, supplied as
an optional kit, also includes the gas cock,
whose installation instructions are provided
in the kit.
In any case, make sure the gas cock is connect-
ed properly.
e gas supply pipe must be suitably dimensioned according to
current regulations in order to guarantee correct 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 standards in force (EN 1775).
ATTENTION:
the appliance is designed to operate with
fuel gas free from impurities; 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 (nitro-
gen) 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 caloric value of the
mixture delivered to the appliance, with subsequent change in
its performance.

12
INSTALLER
USER
MAINTENANCE TECHNICIAN
1.7HYDRAULIC CONNECTION.
In order not to void the condensation module war-
ranty before making the boiler connections, carefully
clean the heating system (pipes, radiators, etc.) with
special pickling or descaling products to remove
any deposits that could compromise correct boiler
operation.
A treatment of the heating and water system water is required,
in compliance with the technical standards in force, in order to
protect the system and the appliance from deposits (e.g. 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 (Par. 1.23).
Water connections must be made in a rational way using the
couplings on the boiler template.
ATTENTION:
the manufacturer declines all liability
in the event of damage caused by the
installation of an automatic lling system.
In order to meet the system requirements established by EN 1717
in terms of 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..
To preserve the duration of appliance eciency fea-
tures, in the presence of water whose features can
lead to the deposit of lime scale, installation of the
“polyphosphate dispenser” kit is recommended .
3 bar safety valve.
e boiler safety valve outlet must be connected to a draining
funnel. Otherwise, the manufacturer declines any responsibility
in case of ooding 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, with an internal Øof at least 13 mm. e system
connecting the appliance to the drainage system must be carried
out in such a way as to prevent occlusion and freezing of the liquid
contained in it. Before appliance ignition, ensure that the con-
densate can be correctly removed. Aer rst ignition, check that
the drain trap is lled with condensate (Para. 1.24). Also, comply
with national and local regulations on discharging waste waters.
In the event condensate is not discharged into the wastewater
drainage system, a condensate neutraliser must be installed to
ensure compliance with the parameters established by the legis-
lation in force.

5
1
d
a1
b
2
c
a
e
13
INSTALLER
USER
MAINTENANCE TECHNICIAN
1.8 ELECTRICAL CONNECTION.
e appliance has an IPX5D protection degree; electrical safety of
the appliance is achieved only when it is connected properly to an
ecient earthing system, as specied by current safety standards.
ATTENTION:
the manufacturer declines any respon-
sibility for damage or physical injury
caused by failure to connect the boiler
to an ecient earthing system or failure
to comply with the CEI reference standards.
•Open the control panel connections compartment (Fig. 5).
To carry out electrical connections, all you have to do is open the
connections compartment as follows.
- Disassemble the grid (1) (Fig. 41).
- Remove the caps, loosen the fastening screws and pull the front
panel (5) towards you (Fig. 42).
- Remove the cover (b g. 5).
1) Loosen the screws (a).
2) 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 corresponds to maxi-
mum absorbed power specications as shown on the boiler data
nameplate. e boilers are supplied complete with a “X” type
power cable without plug.
ATTENTION:
the power supply cable must be connect-
ed to a 230V ±10%/50Hz mains supply
respecting L-N polarity and earth con-
nection; this network must also have
a multi-pole circuit breaker with class
III overvoltage category in compliance
with installation regulations.
To protect from possible dispersions of DC voltage, it is necessary
to provide a type A dierential safety device.
It is recommended to contact a qualied company for replacement
to avoid a hazard. e power cable must be laid as shown (Fig. 4).
If the network fuse on the integrated P.C.B. needs replacing, this
must also be done by qualied personnel: use a 3.15 A F (fast) 250
V fuse (size 5 x 20).
For the main power supply to the appliance, never use adapters,
multiple sockets or extension leads.
Installation with system operating at direct low temperature.
e boiler can directly feed a low-temperature system by acting
on parameters “S5” and S6” (Par. 3.11). In this situation it is good
practice to insert a relevant safety kit (optional) made up from a
thermostat (with adjustable temperature). e thermostat must
be positioned on the system ow pipe.

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•Comando Amico Remoto Remote Control V2 or On/Off
chrono-thermostat electrical connections (Optional).
e operations described below must be performed aer having
removed the voltage from the appliance.
Any thermostat or On/Off environment chrono-thermostat
must be connected to clamps 40 and 41 eliminating jumper X40
(Fig. 39). 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. CARV2 must be connected to terminal
boards 41 and 44, eliminating jumper X40 on the terminal board
(located in the control panel) (Part. e - Fig. 5) paying attention not
to invert the polarity connections (Fig. 39). Connection with the
wrong polarity prevents functioning, but without damaging the
CARV2 e boiler can only be connected to one remote control.
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 regu-
lations regarding electrical systems. No boiler pipes
must ever be used to earth the electric system or telephone
lines. Ensure elimination of this risk before making the boiler
electrical connections.
1.9 REMOTE CONTROLS AND ROOM CHRONO-
THERMOSTATS (OPTIONAL).
e boiler is prepared for the application of room chrono-ther-
mostats or remote controls, which are available as optional kits
(Fig. 6).
All Immergas chrono-thermostats are connected with 2 wires
only. Carefully read the user and assembly instructions contained
in the accessory kit.
ATTENTION:
disconnect power to the appliance be-
fore any electrical connection.
• On/O Immergas digital chrono-thermostat.
e chrono-thermostat allows:
- set two room temperature value: one for day (comfort temper-
ature) and one for night (reduced temperature);
- set a weekly programme with four daily switch on and switch
o times;
- selecting the required function mode from the various possible
alternatives:
• manual mode (with adjustable temperature).
• automatic mode (with set programme).
• forced automatic mode (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 Device 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 easily intervene on the previously set pa-
rameters, without having to go to where the appliance is installed.
e panel is provided with self-diagnosis to display any boiler
functioning anomalies. e climate chrono-thermostat incorpo-
rated 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.
If the system is subdivided 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.

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1.10 EXTERNAL TEMPERATURE PROBE (OPTIONAL).
e boiler is designed for the application of the external temper-
ature probe (Fig. 7), which is available as an optional kit. Refer to
the relative instruction che for positioning of the external probe.
The probe can be connected directly to the boiler electrical
system and allows the max. system ow temperature to be au-
tomatically 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 connected, regardless of the presence or type of
room chrono-thermostat used and can work in combination 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. 8). 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. 39).
EXTERNAL PROBE
Correction law of the ow temperature depending on the external temperature
and user adjustment of the central heating temperature.
Position of the central heating
temperature user adjustment

(A)
(B) 9
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1.11 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 exclusive-
ly with an original Immergas “Green
Range” inspectionable air intake system and
ue gas extraction system made of plastic,
with the exception of the C6conguration, as
required by the regulations in force and by the
product’s approval.
is ue can be identied by an identication
mark and special distinctive marking bearing
the note "only for condensation boilers".
e plastic pipes cannot be installed outdoors,
for tracts longer than 40 cm, without suitable
protection from UV rays and other atmos-
pheric agents.
•Resistance factors and equivalent lengths.
Each ue component has a Resistance Factor based on exper-
imental 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 dimensionless size. It
is however, conditioned by the temperature of the uids that pass
through the pipe and therefore, varies according to applications
for air intake or ue exhaust. Each single component has a resist-
ance 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 Re-
sistance Factor equal to 100.
e maximum Resistance Factor allowed corresponds to the
resistance encountered with the maximum allowed pipe length
for each type of Terminal Kit. is information allows calcula-
tions to be made to verify the possibility of setting up various
ue congurations.
Note: to dimension the ue ducting using commercial components,
refer to the table of combustion parameters (Paragraph 4.2).
• Positioning the gaskets (black) for “green range” ue systems.
Position the gasket correctly (for bends and extensions) (Fig. 9):
- gasket (A) with notches, to use for bends;
- gasket (B) without notches, to use for extensions.
N.B.: if necessary, to ease the push-tting, spread the elements
with commonly-used talc.
• Extension pipes and concentric elbows push-ttings.
To install push-tting extensions with other elements of the ue
extraction elements assembly, proceed as follows: Install the con-
centric 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.
N.B.: if the exhaust terminal and/or extension concentric 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 temporarily.
e various parts of the ue system must be checked
to ensure that they have been laid in such a way as
to prevent the coupled parts from detaching, in par-
ticular, the ue exhaust duct in the Ø80 separator kit
conguration. Should the aforesaid condition not be
adequately guaranteed, it will be necessary to use the
special clamp ring nut clip kit.
N.B.: when installing horizontal pipes, a minimum inclination
of 3% towards the boiler must be maintained, and a section clip
with pin must be installed every 3 metres.
• Installation inside the recessed frame. In this mode, install the
ue according to your needs using the appropriate pre-sections
in the frame to exit from its clearances.

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MAINTENANCE TECHNICIAN
TYPE OF DUCT
Resistance
Factor
(R)
Equivalent
length in metres of
concentric pipe Ø
80/125
Concentric pipe 80/125 Øm 1 2.1 1
90°concentric bend 80/125 Ø3.0 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
90°concentric bend Ø80/125 with inspection 3.4 1.6
Stub pipe with inspection Ø80/125 3.4 1.6
1.12 TABLES OF RESISTANCE FACTORS AND EQUIVALENT LENGTHS OF “GREEN RANGE” FLUE SYSTEM
COMPONENTS.

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MAINTENANCE TECHNICIAN
TYPE OF DUCT
Resistance
Factor
(R)
Equivalent
length in metres
of concentric
pipe Ø60/100
Equivalent
length in metres
of a Ø80 pipe
Equivalent
length in metres
of a Ø60 pipe
Equivalent
length in metres
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
90°concentric bend Ø60/100 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°
Ø60/100
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

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1.13 OUTDOOR INSTALLATION IN PARTIALLY
PROTECTED AREA.
A partially protected location is a place where the
appliance is not exposed to the direct eects of the
weather (rain, snow, hail, etc.).
If the appliance is installed in a place where the am-
bient temperature drops below -5°C, use the optional
antifreeze kit, checking the ambient operating temper-
ature range shown in the technical data table in this
instruction booklet.
•Configuration type B, open chamber and fan assisted.
(B23 or B53).
Using the special coverage kit one can achieve direct air intake
(Fig. 10) and ue gas exhaust in a single chimney or directly
outside. In this conguration 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 environment in which
the appliance is installed (external);
- the ue gas exhaust must be connected to its own single chimney
(B23) or ducted directly outside via a vertical terminal for direct
exhaust (B53) or via an Immergas ducting system (B53).
e technical regulations in force must be respected.
Cover kit assembly (Fig. 11).
- Remove the two plugs and the gaskets present from the two
lateral holes with respect to the central one. Now cover the le
intake hole using the relevant plate, xing it onto the right 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 to the end stop.
Introduce the gasket, making it run along the bend. Fix it using
the metal sheet plate and tighten by means of the clips present
in the kit, making sure to block the 4 gasket aps.
- Fit the male end (smooth) of the exhaust pipe into the female end
of the 90°Ø80 bend, making sure that the relevant wall sealing
plate is already tted.
is will ensure hold and joining 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 30 linear 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 female 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 loca-
tion (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 and Ø80/125 concentric intake/ exhaust kits. Refer to
the paragraph on indoor installation. In this conguration the
upper cover kit guarantees additional protection for the boiler. It is
recommended but not compulsory. e Ø80/80 separating device
cannot be used in this conguration (coupled with the cover kit).

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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