Immergas Hercules Condensing 26 2 E User manual

HERCULES
Condensing
26 2 E - 32 2 I
*1.032972IE*
Instruction booklet and
warning IE

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 any interventions or
routine maintenance contact Immergas Authorised Centres: these have original spare parts and boast of specic preparation directly from the manufacturer.
General recommendations
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 kept well and consulted carefully, as all of the warnings supply important indications for safety in the installation, use and maintenance
stages. 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
professionally qualied sta, intending sta with specic technical skills in the plant sector, as envisioned by the Law. Incorrect installation can cause injury
to persons and animals and damage to objects, for which the manufacturer is not liable. Maintenance must be carried out by skilled technical sta. e
Immergas Authorised Aer-sales Service represents a guarantee of qualications 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,
running and maintenance, due to the non compliance of 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
INDICE
USER pag.
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 forewarning.
INSTALLATOR pag. MAINTENANCE pag.
DECLARATION OF CONFORMITY
For the purpose and eect of the Gas Appliance Directive 2009/142/CE, EMC Directive 2004/108/CE, Boiler Eciency Directive 92/42/CE and Low
Voltage Directive 2006/95/CE.
e Manufacturer: Immergas S.p.A. v. Cisa Ligure n° 95 42041 Brescello (RE)
DECLARES THAT: the Immergas boiler model: Hercules Condensing 26 2 E - 32 2 I
is in compliance with the same European Community Directives Signature:
Mauro Guareschi
Research & Development Director
1 Boiler installation. ................................................3
1.1 Installation recommendations. ..........................3
1.2 Main dimensions. ................................................3
1.3 Attachments. ........................................................................4
1.4 Remote controls and room timer thermostats
(optional). .............................................................4
1.5 External temperature probe (optional). ............5
1.6 Immergas ue systems. .......................................6
1.7 Installation of boiler type b23open chamber and
fan assisted). .........................................................6
1.8 Installation of the air intake and
ue exhaust terminals. ........................................8
1.9 Ducting of ues or technical slots. ..................10
1.10 Flue exhaust to ue/chimney. ...........................10
1.11 Flues, chimneys and chimney caps. ................10
1.12 System lling. .....................................................10
1.13 Filling of the condensate trap. ..........................10
1.14 Gas system start-up. ..........................................10
1.15 Boiler start-up (ignition). .................................11
1.16 Domestic hot water storage tank unit. ............11
1.17 Kits available on request. ..................................11
1.18 Circulation pump. Version ‘1’ ..........................12
1.19 Circulation pump. Version ‘2’ ..........................12
1.20 Boiler components. ............................................14
2 User and maintenance instructions. ................15
2.1 Cleaning and maintenance. ..............................15
2.2 General warnings. ..............................................15
2.3 Control panel. .....................................................15
2.4 Description of functioning states. ...................16
2.5 Using the boiler. .................................................16
2.6 Fault and anomaly signals.................................17
2.7 Boiler shutdown. ................................................19
2.8 Restore central heating system pressure. ........19
2.9 System draining..................................................19
2.10 Draining the boiler. ...........................................19
2.11 Anti-freeze protection. ......................................19
2.12 Case cleaning. .....................................................19
2.13 Decommissioning. .............................................19
2.14 Parameters and information menu. ................20
3 Boiler start-up (initial check). ..........................21
3.1 Hydraulic diagram. ............................................21
3.2 Wiring diagram. .................................................22
3.3 Troubleshooting. ................................................22
3.4 Converting the boiler to other types of gas. ...22
3.5 Calibration of number of fan revs. ..................23
3.6 Adjustment of the air-gas ratio. .......................23
3.7 Checks following conversion to
another type of gas. ............................................23
3.8 Programming the p.C.B. ...................................24
3.9 “Chimney sweep function”. ...............................26
3.10 Pump anti-block function. ...............................26
3.11 ree-way anti-block function.........................26
3.12 Radiators anti-freeze function. ........................26
3.13 P.C.B. Periodical self-check. .............................26
3.14 Automatic vent function. ..................................26
3.15 Solar panels coupling function. .......................26
3.16 Yearly appliance
check and maintenance. ....................................26
3.17 Casing removal. ..................................................27
3.18 Variable heat output. .........................................29
3.19 Combustion parameters. ..................................30
3.20 Technical data. ....................................................31

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1 BOILER INSTALLATION.
1.1 INSTALLATION
RECOMMENDATIONS.
e Hercules Condensing boiler has been de-
signed uniquely for oor-installation, for the
heating of rooms for domestic use and similar. By
varying the type of installation the classication
of the boiler also varies, precisely:
- Type B boiler23 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 fumes.
Only professionally qualied heating/plumbing
technicians are authorised to install Immergas
gas appliances.
Installation must be carried out according to the
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 30 cm on the right of
the boiler in order to open the lateral hatch and a
space of 3 cm between the remaining sides of the
boiler and the sides of the cabinet. Leave adequate
space above the boiler for possible water and
fume removal connections. Keep all ammable
objects away from the appliance (paper, rags,
plastic, polystyrene, etc.).
In the event of malfunctions, faults or incorrect
operation, turn the appliance o immediately and
contact a qualied technician (e.g. the Immergas
Technical Assistance centre, which has specical-
ly 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 Standards:
- Installation in places with a re risk is pro-
hibited (for example: garages, box), gas ap-
pliances and relative ue ducts, ue exhaust
pipes and combustion air intake pipes.
- 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,
1.2 MAIN DIMENSIONS.
Key
RA3 - Zone 3 high temperature system
return G 3/4” (optional)
MA3 - Zone 3 high
temperature system ow G 3/4” (optional)
RA2 - Zone 2 high
temperature system return G 3/4” (optional)
MA2 - Zone 2 high
temperature system ow G 3/4” (optional)
RB2 - Zone 2 low
temperature system return G 1” (optional)
MB2 - Zone 2 low
temperature system ow G 1” (optional)
RB1 - Zone 1 low
temperature system return G 1” (optional)
MB1 - Zone 1 low
temperature system ow G 1” (optional)
RA1 - Zone 1 high
temperature system return G 3/4”
MA1 - Zone 1 high
temperature system ow G 3/4”
G - Gas supply G 1/2”
AC - DHW output G 3/4”
AF - DHW input G 3/4”
RC - Recirculation G 1/2” (optional)
RP - Solar panels return G 3/4” (optional)
MP - Solar panels ow G 3/4” (optional)
SC - Condensate drain
(minimum internal diameter Ø 13 mm)
etc. if they are not located inside technical
compartments under the responsibility of
each individual building and only accessible
to the user.
Important: these 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. ey must be
installed in rooms where the temperature can-
not fall below 0°C and must not be exposed to
atmospheric agents.

CAVO ALIMENTAZIONE
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INSTALLATORUSERMAINTENANCE
1.3 ATTACHMENTS.
Gas connection (Appliance category II2H3B/P).
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-plate). If
dierent, the appliance must be converted for
operation with the other type of gas (see conver-
ting appliance for other gas types). e dynamic
gas supply (methane or LPG) pressure must also
be checked according to the type used in the
boiler, as insucient levels can reduce generator
output and cause malfunctions. Ensure correct
gas cock connection.
e gas supply pipe must be suitably dimensio-
ned according to current regulations in order to
guarantee correct gas ow 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.
Fuel gas quality. e appliance has been desig-
ned to operate with gas free of impurities; other-
wise it is advisable to t special lters upstream
from the appliance to restore the purity of the gas.
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 causing 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.
Hydraulic connection.
Important: in order not to void the warranty
before making the boiler connections, carefully
clean the heating system (pipes, radiators, etc.)
with special pickling or de-scaling products to
remove any deposits that could compromise
correct boiler operation.
In compliance with Standards in force it is man-
datory to treat the water in the heating system
chemically in order to protect the system and
appliance from deposits of lime scale.
Water connections must be made in a rational
way using the couplings on the boiler template.
e boiler safety valves outlet must be connected
to a draining funnel. Otherwise, the manufactu-
rer declines any responsibility in case of ooding
if the drain valve cuts in.
Important: to preserve the duration of appliance
eciency features, in the presence of water whose
features can lead to the deposit of lime scale,
installation of the “polyphosphate dispenser” kit
is recommended. On the basis of the Standards in
force, it is mandatory to treat the water with over
25 French degrees in the heating circuit and over
15 French degrees for DHW using conditioning
chemicals for powers < 100 kW or with soeners
for powers > 100 kW.
Condensate drain. To drain the condensate pro-
duced by the appliance, it is necessary to connect
to the drainage system by means of acid conden-
sate resistant pipes having an internal diameter
of at least 13 mm. e system connecting the
appliance to the drainage system must be carried
out in such a way as to prevent freezing of the
liquid contained in it. Before appliance start-
up, ensure that the condensate can be correctly
removed. Also, comply with national and local
regulations on discharging waste waters.
Electrical connection: e “Hercules Conden-
sing” boiler has an IPX5D protection rating
for the entire appliance. Electrical safety of the
appliance is reached only when it is correctly
connected to an efficient earthing system as
specied by current safety standards.
Important: Immergas S.p.A. declines any re-
sponsibility for damage or physical injury caused
by the failure to connect the boiler to an ecient
earthing system or failure to comply with the
reference standards.
Also ensure that the electrical installation corre-
sponds to maximum absorbed power specica-
tions as shown on the boiler data-plate.
e 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. When replacing
the power supply cable, contact a qualied tech-
nician (e.g. the Immergas Aer-Sales Technical
Assistance Service).
e power cable must be laid as shown.
In the event of mains fuse replacement on the
control card, use a 3.15A quick-blow fuse. For
the main power supply to the appliance, never
use adapters, multiple sockets or extension leads.
1.4 REMOTE CONTROLS AND
ROOM TIMER THERMOSTATS
OPTIONAL.
e boiler is prepared for the application of room
timer thermostats or remote controls, which are
available as optional kits.
All Immergas timer thermostats are connected
with 2 wires only. Carefully read the user and
assembly instructions contained in the acces-
sory kit.
• On/O digital timer thermostat (Fig. 1-3). e
timer thermostat allows:
- to set two room temperature values: one for
day (comfort temperature) and one for night
(lower temperature);
- to set up to four on/o dierential weekly
programs;
- to select the required operating mode from
the various possible alternatives:
• permanent functioning in comfort temp.
• permanent functioning in reduced temp.
• permanent functioning in adjustable anti-
freeze temp.
e timer thermostat is powered by two 1.5V
LR 6 type alkaline batteries;
• ere are two types of remote controls availa-
ble: Comando Amico Remoto remote controlV2
(CARV2) (Fig. 1-3) and Super Comando Amico
Remoto remote control (Super CAR) (Fig. 1-4)
both with room timer thermostat functioning.
In addition to the functions described in the
previous point, the timer thermostat panels
enable the user to control all the important
information regarding operation of the ap-
pliance and the central heating system with
the opportunity of easily intervening on the
previously set parameters without having to go
to the place where the appliance is installed. e
panel is provided with self-diagnosis to display
POWER SUPPLY CABLE
On/O digital timer thermostat.
Comando Amico Remoto remote controlV2 (CARV2)Super Comando Amico Remoto remote control
(Super CAR)

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INSTALLATORUSERMAINTENANCE
EXTERNAL PROBE:
Correction law of the ow temperature depending on the external tem-
perature and user adjustments of the central heating temperature.
any boiler functioning anomalies. e climate
timer 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 timer thermostat is fed directly by
the boiler by means of the same 2 wires used
for the transmission of data between boiler and
timer thermostat.
Important: if the system is subdivided into
zones using the relevant kit the CARV2 and the
Super CAR must be used with its climate ther-
mostat function disabled, i.e. it must be set to
On/O mode.
CARV2, Super CAR or On/O timer thermostat
electrical connection (Optional). e operations
described below must be performed aer having
removed the voltage from the appliance. e even-
tual On/O environment timer 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 supply, otherwise the
electronic adjustment card would be damaged.
Any CARV2 or Super CAR must be connected
by means of terminals IN+ and IN- to terminals
42 and 43 on the P.C.B. (in boiler), eliminating
jumper X40 and respecting polarity (Fig. 3-2).
Connection with the wrong polarity prevents
functioning, but without damaging the CARV2
e boiler can only be connected to one remote
control.
Important: if the Comando Amico Remoto
remote controlV2 is used, arrange two separate
lines in compliance with current regulations
regarding electrical systems. Boiler pipes must
never be used to earth the electric or telephone
lines. Ensure elimination of this risk before ma-
king the boiler electrical connections.
Installation with system operating at direct
low temperature. e boiler can directly feed a
low temperature system by acting on parameter
“P66” (Par. 3.8) and setting the ow temperature
adjustment range“P66/A” and “P66/B”. In this si-
tuation it is good practice to insert a safety device
in series with the power supply and boiler. is
device is made up from a thermostat with a tem-
perature limit of 60°C. e thermostat must be
positioned on the system ow pipe at a distance
of at least 2 metres from the boiler.
1.5 EXTERNAL TEMPERATURE PROBE
OPTIONAL.
e boiler is prepared for the application of the
external probe (Fig. 1-5), which is available as an
optional kit. e probe can be connected directly
to the boiler electrical system and allows the
max. system ow temperature to be automati-
cally 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 timer thermostat used and can
work in combination with Immergas timer
thermostats. e correlation between system
ow temperature and external temperature is
determined by the parameters set in menu “M5”
under “P66” according to the curves represented
in the diagram (Fig. 1-6). e electric connection
of the external probe must be made on clamps 38
and 39 on the boiler P.C.B. (Fig. 3-2).
TM-MAX/MIN = Selected ow
temp. range.
TE = External temperature.

(A)
(B)
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1.6 IMMERGAS FLUE SYSTEMS.
Immergas supplies various solutions separately
from the boiler regarding the installation of air
intake terminals and ue exhaust; fundamental
for boiler operation.
Important: the boiler must be installed ex-
clusively with an original Immergas “Green
Range” air intake and fume extraction system
in plastic, as envisioned.
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 extraction system component has a
Resistance Factor based on experimental tests
and specied in the table below. e resistance
factor for individual components does not
depend either on the type of boiler on which
it is installed or the actual dimensions. 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 individual component has
a resistance corresponding to a certain length
in metres of pipe of the same diameter; the
so-called equivalent length, 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 corre-
sponds to the resistance encountered with the
maximum allowed pipe length for each type
of Terminal Kit. This information enables
calculations to verify the possibility of various
congurations of ue extraction systems.
Positioning of the gaskets (black) for “green
range” ue extraction systems. Position the
gasket correctly (for bends and extensions)
(Fig. 1-7):
- gasket (A) with notches, to use for bends;
- gasket (B) without notches, to use for exten-
sions.
N.B.: if component lubrication (already carried
out by the manufacturer) is not sucient, remove
the residual lubricant using a dry cloth, then to
ease tting spread the elements with common or
industrial talc, supplied in the kit.
1.7 INSTALLATION OF BOILER TYPE
B23OPEN CHAMBER AND FAN
ASSISTED.
In this conguration the relevant terminal “1”
must be used (present in the appropriate intake
kit for the installation in question) to be placed
on the intake hole above the sealed chamber
(Fig. 1-8). Air intake takes place directly from the
environment and ue exhaust in individual ue
or to the outside. e boiler in this conguration,
following the assembly instructions stated on the
relative instruction sheet, is classied as type B23.
With this conguration:
- air intake takes place directly from the environ-
ment in which the boiler is installed and only
functions in permanently ventilated rooms;
- the ue exhaust must be connected to its own
individual ue or channelled directly into the
external atmosphere.
- 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, sol-
vents, combustibles, etc.), as well as dusts (e.g.
dust deriving from the working of wood, coal
nes, cement, etc.). ese may be damaging for
the components of the appliance and jeopardise
functioning.
The technical regulations in force must be
respected.
Max. length of exhaust duct. The flue pipe
(vertical or horizontal) can be extended to a max.
length of 30 straight metres.

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INSTALLATORUSERMAINTENANCE
Tables of Resistance Factors and Equivalent Lengths.
DUCT TYPE Resistance Factor
(R)
Equivalent length
in m of concentric pipe Ø
60/100
Equivalent length
in metres of pipe Ø 80
Equivalent length
in metres of pipe Ø 60
Concentric pipe Ø 60/100 m 1 Intake and
Exhaust 6,4 m 1 Intake m 7,3 Exhaust m1,9
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
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
Exhaust m 5,3
Terminal complete with concentric horizon-
tal intake-exhaust Ø 60/100 Intake and
Exhaust 15 m 2,3
Intake m 17,2
Exhaust m 4,5
Exhaust m 12,5
Concentric horizontal
intake- exhaust terminal Ø 60/100 Intake and
Exhaust 10 m 1,5 Intake m 11,5 Exhaust m 3,0
Exhaust m 8,3
Terminal complete with concentric
vertical intake-exhaust Ø 60/100 Intake and
Exhaust 16,3 m 2,5
Intake m 18,7
Exhaust m 4,9
Exhaust m 13,6
Concentric vertical intake-exhaust
terminal Ø 60/100 Intake and
Exhaust 9 m 1,4
Intake m 10,3
Exhaust m 2,7
Exhaust m 7,5
Pipe Ø 80, 1 m Intake 0,87 m 0,1 Intake m 1,0 Exhaust m 0,4
Exhaust 1,2 m 0,2 Exhaust m 1,0
Complete intake terminal Ø 80, 1 m
Intake 3 m 0,5 Intake m 3,4 Exhaust m 0,9
Intake terminal Ø 80
Drain terminal Ø 80 Intake 2,2 m 0,35 Intake m 2,5 Exhaust m 0,6
Exhaust 1,9 m 0,3 Exhaust m 1,6
Bend 90° Ø 80 Intake 1,9 m 0,3 Intake m 2,2 Exhaust m 0,8
Exhaust 2,6 m 0,4 Exhaust m 2,1
Bend 45° Ø 80 Intake 1,2 m 0,2 Intake m 1,4 Exhaust m 0,5
Exhaust 1,6 m 0,25 Exhaust m 1,3
Pipe Ø 60 m 1 for ducting
Exhaust 3,3 m 0,5 Intake 3,8 Exhaust m 1,0
Exhaust 2,7
Bend 90° Ø 60 for ducting
Exhaust 3,5 m 0,55 Intake 4,0 Exhaust m 1,1
Exhaust 2,9
Reduction Ø 80/60 Intake and
Exhaust 2,6 m 0,4 Intake m 3,0 Exhaust m 0,8
Exhaust m 2,1
Terminal complete with exhaust
vertical Ø 60 for ducting
Exhaust 12,2 m 1,9
Intake m 14
Exhaust m 3,7
Exhaust m 10,1

C13
C33 C33
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MAX. LENGTH 14400 mm
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 white wall sealing
plate (4)
N° 1 - External grey wall sealing
plate (5)
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
terminal Ø 60/100 (5)
N° 1 - Fixed half-shell (6)
N° 1 - Mobile half-shell (7)
1.8 INSTALLATION OF THE AIR
INTAKE AND FLUE EXHAUST
TERMINALS.
• Type C conguration, sealed chamber and
fan assisted.
Horizontal intake - exhaust kit Ø 60/100.
Assembly kit (Fig. 1-9): install the bend with
ange (2) on the most internal hole of the boiler,
placing the gasket (1) (which does not require
lubrication); positioning it with the circular
projections downwards in contact with the boiler
ange and tighten using the screws present in the
kit. Fit the Ø 60/100 (3) concentric terminal pipe
with the male end (smooth) to the female end
of the bend (2) up to the stop; making sure that
the internal and external wall sealing plates have
been tted, this will ensure sealing and joining
of the elements making up the kit.
N.B.: for correct functioning of the system the
terminal with grid must be installed correctly
ensuring that, the “high” indication present on
the terminal is respected on installation.
• Coupling extension pipes and concentric
elbows Ø 60/100. To snap-t extensions with
other elements of the fume extraction elements,
operate as follows Engage the concentric pipe
or elbow with the male side (smooth) on the
female section (with lip seal) to the end stop
on the previously installed element. is will
ensure sealing and joining of the elements
correctly.
e kit Ø 60/100 can be installed with the rear,
right side, le side or front outlet.
• Extensions for horizontal kit. e horizontal
intake-exhaust kit Ø 60/100 can be extended
up to a max. horizontal distance of 12.9 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 these cases the special extensions
must be requested.
N.B.: when installing the ducts, a section clamp
with pin must be installed every 3 metres.
• External grill. N.B.: for safety purposes, do not
even temporarily obstruct the boiler intake/
exhaust terminal.
Vertical kit with aluminium tile Ø 60/100.
Kit assembly (Fig. 1-11): install the concentric
ange (2) on the most internal hole of the boi-
ler, positioning the gasket (1) (which does not
require lubrication); with the circular projections
downwards in contact with the boiler ange and
tighten using the screws present in the kit.
Imitation aluminium tile installation: replace the
tile with the aluminium sheet (4), shaping it to
ensure that rainwater runs o. Position the xed
half-shell (6) and insert the intake-exhaust pipe
(5). Fit the Ø 60/100 (3) concentric terminal pipe
with the male end (5) (smooth) into the ange (2)
up to the 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.
• Coupling extension pipes and concentric el-
bows. To install snap-t extensions with other
elements of the ue extraction elements assem-
bly, proceed as follows: engage the concentric
pipe or elbow with the male side (smooth)
on the female section (with lip seal) up to the
stop on the previously installed element. is
will ensure sealing and joining of the elements
correctly.
Important: if the exhaust terminal and/or exten-
sion concentric pipe needs shortening, consider
that the internal pipe must always protrude by 5
mm with respect to the external pipe.
is specic terminal enables ue exhaust and
air intake, necessary for combustion, in a vertical
direction.
N.B.: the vertical kit Ø 60/100 with aluminium
tile enables installation on terraces and roofs
with maximum slope of 45% (24°) and the
height between the terminal cap and half-shell
(374 mm) must always be respected (Fig. 1-12).
e vertical kit with this conguration can be
extended to a max. straight vertical length of 14.4
m including the terminal. is conguration
corresponds to a resistance factor of 100. In this
case the special extensions must be requested.

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INSTALLATORUSERMAINTENANCE
minimum slope 1.5%
e kit includes
N° 1 - Exhaust gasket (1)
N° 1 - Flange seal (2)
N° 1 - Female intake ange (3)
N° 1 - Female exhaust ange (4)
N° 2 - Bend 90° Ø 80 (5)
N° 1 - Intake terminal Ø 80 (6)
N° 2 - Internal white wall sealing
plates (7)
N° 1 - External grey wall sealing
plate (8)
N° 1 - Exhaust pipe Ø 80 (9)
Separator kit Ø 80/80. e Ø 80/80 separator
kit allows separation of the exhaust ues and air
intake pipes according to the diagram shown in
the gure. Combustion products 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). Both ducts
can be routed in any direction.
• Kit assembly (Fig. 1-13): install the ange (4) on
the most internal hole of the boiler, positioning
the gasket (1) (which does not require lubrica-
tion), with the circular projections downwards
in contact with the boiler ange and tighten
using the hex screws with at end present in the
kit. Remove the at ange present in the most
external hole 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 section (smooth) in the female section of
the bend (5) up to the stop, ensuring that the
internal and external wall sealing plates are
tted. Fit the exhaust pipe (9) with the male end
(smooth) to the female end of the bend (5) up
to the stop; making sure that the internal wall
sealing plate has been tted. is will ensure
sealing and joining of the elements making up
the kit.
• Coupling of extension pipes and elbows. To
install snap-t extensions with other elements
of the ue extraction elements assembly, pro-
ceed as follows: engage the pipe or elbow with
the male side (smooth) in the female section
(with lip seal) up to the stop on the previously
installed element. This will ensure sealing
eciency of the coupling.
• Installation clearance (Fig. 1-14). e mini-
mum installation clearance measurements of
the Ø 80/80 separator terminal kit have been
stated in some limit conditions.
• Extensions for Ø 80/80 separator kit. The
maximum vertical straight length (without
bends) that can be used for Ø 80 intake and
exhaust pipes is 41 metres, independently to
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 Ø 80 intake and exhaust pipes is 36
metres independently to 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 boilers with a min. slope of 1.5%.
(Fig. 1-15). When installing the Ø 80 ducts, a
section clamp with pin must be installed every
3 metres.

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INSTALLATORUSERMAINTENANCE
1.9 DUCTING OF FLUES OR
TECHNICAL SLOTS.
Ducting is an operation through which by the
introduction of one or more relevant pipes, a
system is realised for the evacuation of the com-
bustion 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. 1-16). Ducting requires the use of
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.
Immergas ducting system. e Ø60 rigid and
Ø80 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 perfor-
med according to the indications supplied by
the manufacturer and in compliance with the
provisions in force.
- e max. possible length of the Ø 60 exible
ducting vertical section is equal to 22 m. is
length is obtained considering the complete Ø
80 exhaust terminal, 1m of Ø 80 pipe in exhaust,
two 90° Ø 80 bends at boiler outlet.
- e max. possible length of the Ø 80 exible
ducting vertical section is equal to 30 m. is
length is obtained considering the complete
exhaust terminal, 1m of Ø 80 pipe in exhaust,
two 90° Ø 80 bends at boiler outlet for connec-
ting to the ducting system and two direction
changes of the exible tube inside the ue/
technical hole.
- e max. possible length of the Ø 80 exible
ducting vertical section is equal to 30 m. is
length is obtained considering the complete
exhaust terminal Ø80, 1m of Ø 80 pipe in
exhaust, two 90° Ø 80 bends at boiler outlet.
1.10 FLUE EXHAUST TO FLUE/CHIMNEY.
Flue gas exhaust does not necessarily have to be
connected to a branched type traditional ue.
e ue exhaust, for boiler clots installed in C
configuration, can be connected to a special
LAS type multiple ue. For B23 congurations,
exhaust is only allowed into individual ue or di-
rectly into the external atmosphere via a relevant
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 at-
tached. Multiple and combined ues must be
specially designed according to the calculation
method and requirements of the standards, by
professionally qualied technical sta. Chimney
or ue sections for connection of the exhaust
pipe must comply with requisites of technical
standards in force.
1.11 FLUES, CHIMNEYS AND CHIMNEY
CAPS.
e ues, chimneys and chimney caps for the
evacuation of combustion products must be in
compliance with applicable standards.
Positioning the exhaust terminals. e exhaust
terminals must:
- be installed on external perimeter walls of the
building;
- be positioned according to the minimum di-
stances specied in current technical standards.
Combustion products exhaust of fan assisted
appliances in open-top closed environments. In
spaces closed on all sides with open tops (ven-
tilation pits, courtyards 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.
1.12 SYSTEM FILLING.
Once the boiler is connected, ll the system via
the lling valve (Fig. 2-8). Filling is performed
at low speed to ensure release of air bubbles
in the water via the boiler and central heating
system vents.
e pump may be noisy on start-up due to the
presence of air. is noise should stop aer a
few minutes of functioning and however aer
having correctly bled the air contained in the
hydraulic circuit.
e boiler incorporates an automatic vent valve
positioned on the boiler pump and one positio-
ned on the hydraulic manifold. Make sure that the
hoods are loosened. Open the radiator vent valves.
Close radiator vent valves when only water
escapes from them.
Close the lling valve when the boiler manometer
indicates approx. 1.2 bar.
N.B.: during these operations, start-up the
circulation pump at intervals, acting on the
main switch positioned on the control panel.
Vent the circulation pump by loosening the front
cap and keeping the motor running and assuring
that the liquid that escapes cannot cause injury/
damage to persons/objects. Tighten the cap aer
the operation.
Important: to carry out the lling procedure
correctly, activate the “automatic vent” function,
see paragraph 3.14.
1.13 FILLING OF THE CONDENSATE
TRAP.
On commissioning of the boiler combustion
products may escape from the condensate drain;
aer a few minutes operation check that fumes no
longer escape. is means that the trap is lled
with condensate to the correct level preventing
the passage of combustion products.
1.14 GAS SYSTEM STARTUP.
To start up the system, refer to the Standard. 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 naked ames;
- bleed all air from pipelines;
- check that the internal system is properly sealed
according to specications.