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 qualied aer-sales service, prepared and updated to guarantee constant eciency 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 conrm your satisfaction
for the Immergas product. Contact our area authorised aer-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 specic 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 qualied 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 qualied sta, intending sta with specic 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 Aer-sales Service represents a guarantee of qualications 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 modications to its technical and commercial
documents without forewarning.
INSTALLATOR pag. MAINTENANCE pag.
DECLARATION OF CONFORMITY
For the purpose and eect of the Gas Appliance Directive 2009/142/CE, EMC Directive 2004/108/CE, Boiler Eciency 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 classication
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 qualied 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 sucient 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 qualied technician (e.g. the Immergas
Technical Assistance centre, which has specical-
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
oce condominiums such as stairs, cellars,
entrance halls, attics, los, 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
1-2
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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 eciency. Also
make sure the gas corresponds to that for which
the boiler is prepared (see boiler data-plate). If
dierent, 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 insucient 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 eciency (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
eciency 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 soeners
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
specied 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 ecient
earthing system or failure to comply with the
reference standards.
Also ensure that the electrical installation corre-
sponds to maximum absorbed power specica-
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 qualied tech-
nician (e.g. the Immergas Aer-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 dierential 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)
1-5 1-6
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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 aer 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 identied by an identica-
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 specied 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
congurations 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 sucient, 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 conguration 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 conguration,
following the assembly instructions stated on the
relative instruction sheet, is classied as type B23.
With this conguration:
- 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
1-12
1-11
1-9
C13
1-10
5
4
3
1
2
7
1
2
3
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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 conguration, 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
conguration 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 specic 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 conguration can be
extended to a max. straight vertical length of 14.4
m including the terminal. is conguration
corresponds to a resistance factor of 100. In this
case the special extensions must be requested.
C83
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1-14
1-13
1
4
79
5
5
6
7
8
3
2
S
A
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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
eciency 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 congurations,
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 dier 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 dier 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 qualied 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 specied 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 aer a
few minutes of functioning and however aer
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 aer
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;
aer 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 STARTUP.
To start up the system, refer to the Standard. is
divides the systems and therefore the start-up
operations into three categories: new systems,
modied 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 specications.
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INSTALLATORUSERMAINTENANCE
1.15 BOILER STARTUP IGNITION.
For issue of the Declaration of Conformity pro-
vided for by Italian Law, the following must be
performed for boiler start-up:
- check that the internal system is properly sealed
according to specications;
- make sure that the type of gas used corresponds
to boiler settings;
- 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. 3.18);
- check that the safety device intervenes in the
event of gas supply failure and check activation
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.
e boiler must not be started up even if only
one of the checks should be negative.
N.B.: the boiler preliminary check must be carried
out by a qualied technician. e boiler warranty
is valid as of the date of testing.
e test certicate and warranty is issued to the
user.
1.16 DOMESTIC HOT WATER STORAGE
TANK UNIT.
e “Hercules Condensing” boiler is the accumu-
lation type with a capacity of 120 litres. It contains
large coiled stainless steel heat exchanger pipes,
which allow to notably reduce hot water produc-
tion times. ese boilers built with stainless steel
casing and bottoms, guarantee long duration.
e assembly concepts and welding (T.I.G.) are
implemented to the minimum detail to ensure
maximum reliability.
e upper inspection ange ensures practical
control of the storage tank unit and the coiled
heat exchanger and easy internal cleaning.
e domestic water attachments are found on the
ange cover (cold inlet and hot outlet) and also
the magnesium anode holder cap, including the
latter, supplied as standard for internal protection
of the boiler from possible corrosion.
STORAGE TANK UNIT DRAINING VALVE
SYSTEM DRAINING VALVE
1.17 KITS AVAILABLE ON REQUEST.
• Pump kit (on request). e boiler storage tank
unit is prepared for application of the pump
kit. Immergas supplies a series of ttings and
attachments that allow connection between
the storage tank unit and domestic hot water
system. e pump probe tting is already inser-
ted on the storage unit kit and the indication of
the pump kit attachment is envisioned on the
installation template.
• System shut-o valves kit (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 particularly useful for maintenance as
it allows the boiler to be drained separately
without having to empty the entire system.
• Polyphosphate dispenser kit (on request).
The 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 application of the polyphosphate dispenser
kit.
• Zone pumps kit (on request). If the central
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 pump kits on request.
• Low temperature kit (on request). If the central
heating system is to be divided into high tem-
perature zones (radiators) and low temperature
zones (oor plants) in order to interlock them
with separate adjustments and to keep water
ow rate high for each zone, Immergas supplies
the low temperature kit on request.
• Solar panels kit (on request). If solar panels are
to be used for the production of domestic hot
water, on request Immergas supplies the solar
panels kit.
• Low temperature safety thermostat kit. With
the boiler functioning in direct low tempera-
ture (no control downstream from the boiler),
to prevent problems to the low temperature
system a safety thermostat must be inserted
onto the ow pipe.
e above-mentioned kits are supplied complete
with instructions for assembly and use.
Storage tank unit disassembly. To disassemble
the storage tank unit, empty the boiler system
by acting on the relevant drain tting. Before
carrying out this operation, make sure that the
lling valve is closed. Close the cold water inlet
valve and open any domestic hot water valve.
Loosen the nuts on the system ow and return
pipes (3) and the cold inlet and hot outlet nuts
present on the storage tank unit (1). Loosen the
bracket xing screws (2) Remove the screws
(4) with the relative retainer brackets and slide
the storage tank unit outwards on the relevant
guides. Work in reverse order to assemble the
storage tank unit.
N.B.: every year a skilled technician (e.g.
Immergas Authorised After-sales Service),
must check the eciency of the storage tank
unit Magnesium Anode. e storage tank unit
is prepared for introduction of the domestic hot
water pump tting.
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INSTALLATORUSERMAINTENANCE
1.18 CIRCULATION PUMP.
VERSION ‘1’ FIG. 118
e “Hercules Condensing” range boilers are
supplied with 2 types of pump, both with variable
speed adjuster.
ese settings are suitable for most systems.
• Boiler pump. It has 3-position electric speed
control. e boiler does not operate correctly
with the circulation pump in rst speed. For
optimal boiler functioning of the boiler, use
the pump at maximum speed (max. head).
e circulation pump is already tted with a
capacitor.
Pump release. If the pump should be blocked
aer a long period of inactivity, it must be re-
leased. Loosen the front cap, making sure that
the liquid that escapes cannot cause injury/
damage to persons/objects and turn the mo-
tor sha very carefully using a screwdriver so
as not to damage the latter. Once the pump is
released, close the vent cap.
• Zone 1 pump. The pump is ideal for the
requirements of each heating system in a do-
mestic and residential environment. In fact, the
pump is equipped with electronic control that
allows the advanced functions to be set.
Programme P (P-V) - Proportional curve
(Green LED). is allows the pressure level
(head) to be proportionally reduced as the
system heat demand decreases (ow rate reduc-
tion). anks to this function, the electrical
consumption of the pump will be all the more
reduced: the energy (power) used by the pump
decreases together with the pressure level and
ow rate. With this setting, the pump guar-
antees optimal performance in most heating
systems, thereby being particularly suitable
in single-pipe and two-pipe installations. Any
noise of the water ow in the pipes, valves and
radiators is eliminated by reducing the head.
Optimum conditions for thermal comfort and
acoustic well-being.
Programs C3 and C4 (P-C) - Constant curve
(White or Orange LED). e pump maintains
the pressure level (head) constant as the system
heat demand decreases (ow rate reduction).
With these settings, the pump is suitable for
all oor systems where all the circuits must be
balanced for the same drop in head.
MIN-MAX Program (Blue LED). e pump
is distinguished by adjustable operating curves
by positioning the selector in any point between
the Min and Max positions, thereby satisfying
any installation requirement (from a simple
single-pipe to more modern and sophisticated
systems) and always guarantee optimum per-
formance. e precise working point can be
selected in the entire eld of use by gradually
adjusting the speed.
Adjustments. Turn the selector and set it on
the desired curve to adjust the pump.
Diagnostics in real time: a bright LED (in
various colours) provides information regard-
ing the pump operating status.
Program LED
P (ΔP-V) green
C3 (ΔP-C) - H=3 m white
C4 (ΔP-C) - H=4 m orange
Min - Max blue
ATTENTION! The pump is
blocked but still live. red
Possible pump release. e pump block is
indicated by a xed red LED switching on. Turn
the selector up to the MAX position, discon-
nect and reconnect the power to restart the
automatic release process. e pump will then
activate the procedure that will last a maximum
of 15 minutes and the LED will ash upon each
restart. It then turns blue for a few seconds and
goes back to red if the attempt to restart is not
successful. Once the process is complete, set
the selector back to the desired curve and if
the problem has not bee resolved, perform the
manual release procedure as described below.
- Disconnect the power to the boiler (the LED
goes o).
- Close the system ow and return and let the
pump cool down.
- Empty the system circuit via the relative valve.
- Remove the motor and clean the impeller.
- Once the release is complete, remount the
motor.
- Fill the primary circuit; restore the power of
the boiler and set the desired curve.
Important: there lies a burns hazard in the
presence of high uid temperature and pres-
sure. Burns hazard from coming in contact.
1.19 CIRCULATION PUMP.
VERSION ‘2’ FIG. 119
e “Hercules Condensing kW” range boilers
are supplied with 2 types of pump, both with
variable speed adjuster.
ese settings are suitable for most systems.
• Boiler pump. It has 3-position electric speed
control. e boiler does not operate correctly
with the circulation pump in rst speed. For
optimal boiler functioning, it is advised to use
the pump at maximum speed (max. head). e
pump is already tted with a condenser.
Pump release. If the pump should be blocked
aer a long period of inactivity, it must be rele-
ased. Loosen the front cap, making sure that the
liquid that escapes cannot cause injury/damage
to persons/objects and turn the motor sha
very carefully using a screwdriver so as not to
damage the latter. Once the pump is released,
close the vent cap.
• Zone 1 pump. The speed selector switch is
factory-set in the position marked with a dot.
Whenever performance is insufficient, pro-
gressively increase the value set. If performance
should be excessive or noise occurs due to the
speed of the circulating uid, reduce the speed
progressively. Modify pump performance (head)
by turning the potentiometer on the pump using
a at screwdriver.
Diagnostics. e pump is equipped with a LED
indicator that supplies information regarding the
functioning status of the same.
- Green light: indicates correct functioning.
- Flashing green light: the LED indicates that the
pump is modulating its performance during a
setting change.
- Red light: the pump is blocked.
Pump release. If the pump should be blocked
aer a long period of inactivity (Red LED on),
it must be released. Turn the speed selector
switch positioned on the pump at will to start
the automatic release process (Flashing green
LED), repeat the operation several times. If
the problem persists, remove the power supply
from the boiler, leave the pump to cool, loosen
the front cap, making sure that the liquid that
escapes cannot cause injury/damage to persons/
objects and turn the motor sha very carefully
using a screwdriver so as not to damage the
latter. Once the pump is released, close the vent
cap and re-set the selector switch in the correct
position.
1-18
A
B
C
D
E
F
G
H
I
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1-19
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C
13 - IE
INSTALLATORUSERMAINTENANCE
Total head available to the system.
Version ‘1’
A = Head available to the system with zone pump at maximum speed
B = Head available to the system with zone pump at minimum speed
C = Pump power at maximum speed
D = Pump power at minimum speed
Power (W)
Flow rate (l/h)
Head (kPa)
E = Head available to the system with pump selector in position C4 (standard setting)
F = Head available to the system with pump selector in position P
G = Head available to the system with pump selector in position C3
H = Pump power with selector in position C4 (standard setting)
I = Pump power with selector in position P
L = Pump power with selector in position C3
Power (W)
Flow rate (l/h)
Head (kPa)
A = Available head in the system with zone circulator speed set to maximum
B = Available head in the system with zone circulator speed set to 4,5
C = Available head in the system with zone circulator speed set to 3
Head (m H2O)
Flow rate (l/h)
Head (kPa)
Total head available to the system.
Version ‘2’
1-20
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INSTALLATORUSERMAINTENANCE
1.20 BOILER COMPONENTS.
Key
1 - Stainless steel storage tank
2 - DHW recirculation pump (optional)
3 - 3-way valve (motorised)
4 - Zone 1 one-way valve
5 - Zone 1 pump
6 - Safety thermostat (Low temperature)
(optional)
7 - Flow probe (Low temperature) (optional)
8 - Zone 2 pump (optional)
9 - Mixing valve (optional)
10 - Condensation module
11 - Flue safety thermostat
12 - Burner
13 - Ignition electrode
14 - Detection electrode
15 - Venturi
16 - Gas nozzle
17 - Fan
18 - Domestic water inlet cock
19 - 8 bar safety valve
20 - Air intake pipe
21 - 3 bar safety valve
22 - Domestic hot water expansion vessel
23 - System lling valve
24 - Condensate drain trap
25 - Polyphosphate dispenser (optional)
26 - Domestic hot water probe
27 - Storage tank draining valve
28 - Sample points (air A) - (ue gases F)
29 - Positive signal pressure point
30 - Negative signal pressure point
31 - Manual air vent valve
32 - Air vent valve
33 - Zones management electrical
connection box (optional)
34 - Hydraulic manifold
35 - System expansion vessel
36 - Flow probe
37 - Safety thermostat
38 - Collector draining valve
39 - System pressure switch (absolute)
40 - Boiler Pump
41 - Sealed chamber
42 - Gas valve
43 - System draining valve
2-1
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INSTALLATORUSERMAINTENANCE
2 USER AND MAINTENANCE
INSTRUCTIONS.
2.1 CLEANING AND MAINTENANCE.
Important: the heating plants must undergo
periodical maintenance (regarding this, see in
the section dedicated to the technician, relative
to “yearly control and maintenance of the ap-
pliance”) and regular checks of energy eciency
in compliance with national, regional or local
provisions in force.
is ensures that the optimal safety, performance
and operation characteristics of the boiler remain
unchanged over time.
We recommend stipulating a yearly cleaning and
maintenance contract with your zone technician.
2.2 GENERAL WARNINGS.
Never expose the suspended boiler to direct
vapours from a cooking surface.
Use of the boiler by unskilled persons or children
is strictly prohibited.
For safety purposes, check that the concentric
air intake/flue exhaust terminal (if fitted), is
not blocked.
If temporary shutdown of the boiler is required,
proceed as follows:
a) drain the water system if anti-freeze is not
used;
b) shut-o all electrical, water and gas supplies.
In the case of work or maintenance to structures
located in the vicinity of ducting or devices for
ue extraction and relative accessories, switch o
the appliance and on completion of operations
ensure that a qualied technician checks ecien-
cy of the ducting or other devices.
Never clean the appliance or connected parts
with highly ammable substances.
Never leave containers and ammable substances
in the same environment as the appliance.
• Attention: the use of components that employ
electrical power requires some fundamental
rules to be observed:
- do not touch the appliance with wet or moist
parts of the body; do not touch when barefo-
ot;
- never pull electrical cables or leave the ap-
pliance exposed to atmospheric agents (rain,
sunlight, etc..);
- the appliance power cable must not be repla-
ced by the user;
- in the event of damage to the cable, switch o
the appliance and only contact qualied sta
for replacement;
- if the appliance is not to be used for a certain
period, disconnect the main power switch.
N.B.: the temperatures indicated by the display
have a tolerance of +/- 3°C due to environmental
conditions that cannot be blamed on the boiler.
Key
- Stand-by - On Button
A - Summer ( ) and winter ( ) functioning mode selection button
B - DHW priority button ( )
C - (RESET) /menu exit (ESC) reset button
D - Menu entry button (MENU)/ data conrmation (OK)
1 - Domestic hot water temperature selector switch
2 - Domestic hot water temperature set
3 - Central heating temperature selector switch
2.3 CONTROL PANEL.
4 - Central heating temperature set
4 - Presence of anomalies
6 - Display of boiler functioning status
8 - Flame presence symbol and relative
power scale
9 and 7 - Primary heat exchanger output
water temperature
10 - Boiler in stand-by
11 - Boiler connected to remote control
(Optional)
12 - Functioning in summer mode
13 - Anti-freeze function in progress
14 - Functioning in winter mode
15 - Domestic hot water priority functioning
active
16 - Presence of external connected devices
17 - Display of menu items
18 - Functioning with external temperature
probe active
19 - Display of data conrmation or menu
access
20 and 7 - External temperature display with external
probe connected (optional)
21 - Display of reset or exit menu request
22 - Chimney sweep function in progress
23 - Boiler manometer
24 - Multi-function display
2-2
2-3
2-4
2-5
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INSTALLATORUSERMAINTENANCE
2.4 DESCRIPTION OF FUNCTIONING
STATES.
Below nd a list of boiler functioning states that
appear on the multifunction display (24) by me-
ans of the indicator (6) with a brief description.
Refer to the instruction book for a complete
explanation.
2.5 USING THE BOILER.
Before ignition make sure the central heating sy-
stem is lled with water and that the manometer
(23) indicates a pressure of 1 - 1.2 bar;
Open the gas cock upstream from the boiler.
With the boiler o, only the stand-by symbol
(10) appears on the display. By pressing the ( )
button the boiler switches on.
Once the boiler is on, by pressing button “A”
repeatedly, the functioning mode changes and
pass alternatively from summer functioning
mode ( ) and winter functioning mode ( ).
• Summer ( ): in this mode the boiler fun-
ctions only to heat domestic hot water. e
temperature is set using the selector switch
(1) and the relative temperature is shown on
the display (24) by means of the indicator (2)
and the “SET” indication appears (Fig. 2-2). By
turning the selector switch (1) in a clockwise
direction the temperature increases and in an
anti-clockwise direction it decreases.
During the heating of the domestic hot water
“DHW ON” appears on the display (24) on
the status indicator (6) and at the same time
as burner ignition the ame presence indicator
switches on (8) with relative power scale and
the indicator (9 and 7) with the instantaneous
outlet temperature from the primary heat
exchanger.
• Winter ( ): in this mode the boiler functions
both for heating domestic hot water and hea-
ting the environment. e temperature of the
domestic hot water is always adjusted using
the selector switch (1), the central heating tem-
perature is adjusted using the selector switch
(3) and the relative temperature is shown on
the display (24) using the indicator (4) and
the “SET” indication appears (Fig. 2-4). By
turning the selector switch (3) in a clockwise
direction the temperature increases and in an
anti-clockwise direction it decreases.
During the request for central heating “CH
ON” appears on the display (24) on the status
indicator (6) and at the same time as burner
ignition the ame presence indicator switches
on (8) with relative power scale and the indi-
cator (9 and 7) with the instantaneous outlet
temperature from the primary heat exchanger.
In the central heating phase, if the temperature
of the water contained in the plant is sucient
to heat the radiators, the boiler can only fun-
ction with the activation of the boiler pump.
Adjustment of domestic hot water
Functioning in Summer mode with domestic
hot water heating.
Adjustment of the system ow temperature
Winter functioning mode with room central
heating
Display (6) Description of functioning states
SUMMER Summer functioning mode without request in progress.
Boiler in stand-by for domestic hot water request.
WINTER Winter functioning mode without request in progress.
Boiler in stand-by for domestic hot water or central heating request.
DHW ON Domestic hot water mode in progress.
Boiler functioning, domestic hot water heating in progress.
CH ON Central heating mode in progress.
Boiler functioning, central heating in progress.
F3 Anti-freeze mode in progress.
Boiler functioning to restore the minimum safety temperature against boiler freezing.
CAR OFF Remote Control (Optional) o.
DHW OFF
With domestic hot water priority disabled (indicator 15 o), the boiler only functions
in room central heating mode for duration of 1 hour, however keeping the domestic hot
water at minimum temperature (20°C), aer which the boiler goes back to the normal
functioning, previously set.
In the case of use with Super CAR in concomitance with the functioning period in redu-
ced D.H.W. Timer mode, DHW OFF will appear on the display and indicators 15 and 2
switch o (see Super CAR instructions manual).
F4
Postventilation in progress.
Fan in function aer a request for domestic hot water or central heating in order to evacua-
te residual fumes.
F5
Postcirculation in progress.
Pump in function aer a request for domestic hot water or central heating in order to cool
the primary circuit.
P33
With Remote Control (Optional) or environment thermostat (TA) (Optional) in block,
the boiler functions all the same in central heating mode. (Can be activated through the
“Customisation” menu. It allows to activate the central heating even if the Remote Control
or TA are out of order).
STOP
Reset attempts nished
Wait for 1 hour to re-acquire 1 attempt.
(See Ignition block).
ERR xx Anomaly present with relative error code.
e boiler does not work. (see troubleshooting paragraph).
SET During the rotation of the domestic hot water temperature selector switch (1 Fig. 2-1) view
the state of the adjustment of the domestic hot water temperature in progress.
SET During rotation of the central heating selector switch (3 Fig. 2-1) the adjustment status of
the boiler ow temperature for central heating is displayed.
SET
In presence of the external probe (optional) replace the “SET” item.
e value that appears is the correction of the ow temperature with respect to the functio-
ning curve set by the external probe. See OFFSET on external probe graphics (Fig. 1-6).
F8
System deaeration in progress.
During this phase, which lasts 18 hours, the boiler pump is started at pre-established
intervals, thus allowing deaeration of the central heating system.
F9
Only in the case of use with Super CAR, does it allow to activate the anti-legionella fun-
ction, which takes the temperature of the water in the storage tank to 65°C for 15 minutes.
(see Super CAR instruction manual).
2-6
2-7
17 - IE
INSTALLATORUSERMAINTENANCE
• Operation with Comando Amico Remoto
remote controlV2 (CARV2) (Optional). In the
case of connection to the CARV2, the boiler
automatically detects the display and the
( ). ymbol appears on the display. From
this moment all controls and adjustments are
referred to the CARV2. e stand-by button
“ ”, the reset button “C”, the menu entry
button “D” and the DHW priority button “B”
however remain activ.
Important: if the boiler is put into stand-by
(10) the “CON” connection error symbol will
appear on the CAR
V2
. e CARV2 is however
powered constantly so as not to loose memo-
rised programs.
• Operation with Super Comando Amico
Remoto remote control (Super CAR) (Op-
tional). In the case of connection to the Super
CAR, the boiler automatically detects the
display and the ( ). symbol appears on
the display. From this moment it is possible to
make adjustments indierently from the Super
CAR or the boiler. Except for the central hea-
ting temperature that is shown on the display
but managed by the Super CAR.
Important: if the boiler is put into stand-by
(10) the “ERR>CM” connection error symbol
will appear on the Super CAR. e Super CAR
is however powered constantly so as not to
loose memorised programs.
• Domestic hot water priority function By pres-
sing button “B” the D.H.W. priority function is
deactivated, which is marked by the switch-o
of the symbol (15) on the display (24). e
disabled function keeps the water contained in
the storage tank at a temperature of 20°C for 1
hour, giving the functioning priority to room
central heating.
• Functioning with external probe (Fig. 2-6)
optional. In the case of a system with optional
external probe, the boiler ow temperature
for room central heating is managed by the
external probe depending on the external
temperature measured (Par. 1.6 and par. 3.8
under “P66”). It is possible to modify the ow
temperature from -15°C to +15°C with respect
to the adjustment curve (Fig. 1-6 Oset value).
is correction, which can be activated using
selector switch (3) is kept active for any exter-
nal temperature measured. e modication
of the oset temperature is displayed using
the indicator (7). The indicator (4) shows
the current ow temperature and aer a few
seconds from the modication it is updated
with the new correction. e “SET” indication
appears on the display (Fig. 2-6). By turning the
selector switch (3) in a clockwise direction the
temperature increases and in an anti-clockwise
direction it decreases.
During the request for central heating “CH
ON” appears on the display (24) on the status
indicator (6) and at the same time as burner
ignition the ame presence indicator switches
on (8) with relative power scale and the indi-
cator (9 and 7) with the instantaneous outlet
temperature from the primary heat exchanger.
In the central heating phase, if the temperature
of the water contained in the plant is sucient
to heat the radiators, the boiler can only fun-
ction with the activation of the boiler pump.
From this moment the boiler functions automa-
tically. With no demand for heat (central heating
or domestic hot water production) the boiler goes
to “stand-by” function, equivalent to the boiler
being powered without presence of ame.
N.B.: the boiler may start-up automatically if the
anti-freeze function is activated.(13). Moreover,
the boiler can function for a brief period of time
aer a withdrawal of domestic hot water in order
to take the domestic hot water temperature back
into temperature.
Important: with the boiler in stand-by mode
( ) hot water cannot be produced and the sa-
fety systems cannot be guaranteed, such as: pump
anti-block, anti-freeze and three way anti-block.
2.6 FAULT AND ANOMALY SIGNALS.
The Hercules Condensing boiler signals any
anomalies by the flashing symbol (5) along
with the “ERRxx” indication on the indicator
(6) where “xx” corresponds to the error code
described in the following table. On the eventual
remote control the error code will be displayed by
means of the same numerical code represented
according to the following example (e.g. RFC =
Exx, Super RFC = ERR>xx).
Anomaly signalled Error
code
No ignition block 01
Safety thermostat block (over-heat-
ing), ame control anomaly 02
Flue safety thermostat block 03
Contacts resistance block 04
Flow probe anomaly 05
Insucient system pressure 10
Storage tank probe anomaly 12
Conguration error 15
Fan anomaly 16
Parasite ame block 20
General alarm 22
Return probe anomaly 23
Push button control panel anomaly 24
Insucient circulation 27
Loss of remote control communica-
tion 31
Low temperature zone 2 probe
anomaly 32
Low temperature zone 3 probe
anomaly 33
Low temperature zone 2 safety
thermostat intervention 34
Low temperature zone 3 safety
thermostat intervention 35
IMG Bus communication loss 36
Low power supply voltage 37
Loss of ame signal 38
Important: the error codes 31 to 38 are not
shown on the CARV2 and Super CAR display.
Ignition block. e boiler ignites automatically
with each demand for room central heating or
hot water production. If this does not occur
within 10 seconds, the boiler remains in stand-
by for 30 seconds, try again and if the second
attempt fails it will go into “ignition block”
(ERR01). To eliminate “ignition block” the Reset
button “C” must be pressed. e Anomaly can
be reset 5 times consecutively, aer which the
function in inhibited for at least one hour. One
attempt is gained every hour for a maximum of
5 attempts. By switching the appliance on and
o the 5 attempts are re-acquired. On commis-
sioning or aer extended inactivity it may be
necessary to eliminate the “ignition block”. If
this phenomenon occurs frequently, contact a
qualied technician for assistance (e.g. Immergas
Aer-Sales Technical Assistance Service).
Safety thermostat block (over-heating). During
operation, if a fault causes excessive overheat-
ing internally, or an anomaly occurs in the
ame control section, an overheating block is
triggered in the boiler (ERR02). To eliminate
“over-temperature block” the Reset button “C”
must be pressed. If this phenomenon occurs
frequently, contact a qualied technician for
assistance (e.g. Immergas Aer-Sales Technical
Assistance Service).
Flue safety thermostat block is occurs in
the case of partial internal obstruction (due to
the presence of lime scale or mud) or external
blocking should occur (combustion residues)
to the condensation module. To eliminate the
“ue thermostat block” the Reset button “C”
must be pressed. Call an authorised technician
to remove the obstructions (e.g. Immergas Aer-
sales Service).
Contacts resistance block. is occurs in the
case of faults to the safety thermostat (over-
temperature) or anomaly in the ame control.
e boiler does not start and a technician must
be called (e.g. Immergas Aer-Sales Service).
Flow probe anomaly.If the board detects an
anomaly on the system NTC delivery probe, the
boiler will not start; contact a qualied technician
for assistance (e.g. Immergas Aer-Sales Service).
System ow temperature adjustment
external probe(optional)
Functioning in winter mode
with external probe (optional)
2-8
1
2
3
18 - IE
INSTALLATORUSERMAINTENANCE
Insucient system pressure. Water pressure
inside the central heating system that is sucient
to guarantee the correct functioning of the boiler
is not detected. Check on the boiler manometer
(1) that the system pressure is between 1÷1.2
bar and restore the correct pressure if necessary.
Storage tank probe anomaly. If the board detects
an anomaly on the storage tank probe, the boiler
cannot produce domestic hot water. A qualied
technician must be called (e.g. Immergas Aer-
Sales Service).
Conguration error. If the board detects an
anomaly or incongruency on the electric wiring,
the boiler will not start. If normal conditions are
restored the boiler restarts without having to be
reset. If this anomaly persists, contact a qualied
technician for assistance (e.g. Immergas Aer-
Sales Technical Assistance Service).
Fan anomaly. is occurs if the fan has a me-
chanical or electrical fault. To eliminate the “fan
anomaly” the Reset button “C” must be pressed.
If this anomaly persists, contact a qualied tech-
nician for assistance (e.g. Immergas Aer-Sales
Technical Assistance Service).
Parasite ame block.is occurs in case of a leak
on the detection circuit or anomaly in the ame
control unit. e boiler can be reset in order to
allow a new ignition attempt. If the boiler does
not start, contact a qualied technician for assist-
ance (e.g. Immergas Aer-Sales Service).
General alarm. is type of error is displayed
on the CARV2 or Super CAR in the case of break-
down or anomalies of the P.C.B. or components
not directly connected to boiler management:
anomaly on the zone control unit, substation or
solar circuit. For this anomaly, contact a qualied
technician for assistance (e.g. Immergas Aer-
Sales Service).
Return probe anomaly. In this condition the
boiler does not correctly control the pump if set
as “Auto”. e boiler continues functioning but
to eliminate the anomaly, contact a qualied
technician for assistance (e.g. Immergas Aer-
Sales Service).
Push button control panel anomaly. is occurs
when the circuit board detects an anomaly on the
push button control panel. If normal conditions
are restored the boiler restarts without having
to be reset. If this anomaly persists, contact a
qualied technician for assistance (e.g. Immergas
Aer-Sales Technical Assistance Service).
Insufficient circulation This occurs if there
is overheating in the boiler due to insucient
water circulating in the primary circuit; the
causes can be:
- low system circulation; check that no shut-o
devices are closed on the heating circuit and
that the system is free of air (deaerated);
- circulating pump blocked; free the circulating
pump.
If this phenomenon occurs frequently, contact a
qualied technician for assistance (e.g. Immergas
Aer-Sales Technical Assistance Service).
Loss of remote control communication. is
occurs in the case of connection to a remote
control that is not compatible or if there is a
loss of communication between the boiler and
CARV2 or Super CAR. Try the connection pro-
cedure again by turning the boiler o and then
back on again. If the Remote Control is still not
detected on re-starting the boiler will switch to
local operating mode, i.e. using the controls on
the boiler itself. In this case the boiler cannot
activate the “Central heating” function. To make
the boiler function in “Heating” mode, activate
the “Emergency” function present inside the
“Customisations” menu. If this phenomenon oc-
curs frequently, contact a qualied technician for
assistance (e.g. Immergas Aer-Sales Technical
Assistance Service).
Low temperature zone 2 probe anomaly.If the
board detects an anomaly on the low temperature
zone 2 probe, the boiler cannot function in the
interested zone. A qualied technician must be
called (e.g. Immergas Aer-Sales Service).
Low temperature zone 3 probe anomaly.If the
board detects an anomaly on the low temperature
zone 3 probe, the boiler cannot function in the
interested zone. A qualied technician must be
called (e.g. Immergas Aer-Sales Service).
Low temperature zone 2 safety thermostat
intervention.During operation, if a fault causes
excessive over-heating internally on the low
temperature zone 2, the boiler does not satisfy
the requests of the interested zone. If normal
conditions are restored the boiler restarts without
having to be reset. A qualied technician must
be called (e.g. Immergas Aer-Sales Service).
Low temperature zone 3 safety thermostat
intervention.During operation, if a fault causes
excessive over-heating internally on the low
temperature zone 3, the boiler does not satisfy
the requests of the interested zone. If normal
conditions are restored the boiler restarts without
having to be reset. A qualied technician must
be called (e.g. Immergas Aer-Sales Service).
IMG Bus communication loss. If due to an
anomaly on the boiler control unit, the com-
munication is lost between the control units on
the zones control unit or on the IMG Bus, the
boiler does not satisfy the room central heating
requests. A qualied technician must be called
(e.g. Immergas Aer-Sales Service).
Low power supply voltage is occurs when the
power supply voltage is lower than the allowed
limits for the correct functioning of the boiler.
If normal conditions are restored, the boiler
re-starts without having to be reset. If this phe-
nomenon occurs frequently, contact a qualied
Key:
1 - Gas cock
2 - Cold water inlet valve
3 - System lling valve
technician for assistance (e.g. Immergas Aer-
Sales Technical Assistance Service).
Loss of ame signal. is occurs when the boiler
is ignited correctly and the burner ame switches
o unexpectedly; a new attempt at ignition is
performed and if normal conditions are restored,
the boiler does not have to be reset (this anomaly
can be checked in the list of errors P19 present
in the “M1” menu). If this phenomenon occurs
frequently, contact a qualied technician for
assistance (e.g. Immergas Aer-Sales Technical
Assistance Service).
Signalling and diagnostics - Display of the
Remote Controls (Optional). During normal
boiler functioning the remote control display
shows (CARV2 or Super CAR) the room tem-
perature value; in the case of malfunctioning
or anomaly, the display of the temperature is
replaced by the relative error code present in
the table (Par. 2.6).
19 - IE
INSTALLATORUSERMAINTENANCE
2.7 BOILER SHUTDOWN.
Switch the boiler o by pressing the “ ”, but-
ton, disconnect the onmipolar switch outside of
the boiler and close the gas cock upstream from
the appliance. Never leave the boiler switched on
if le unused for prolonged periods.
2.8 RESTORE CENTRAL HEATING
SYSTEM PRESSURE.
Periodically check the system water pressure.
e boiler pressure gauge should read a pressure
between 1 and 1.2 bar.
If the pressure falls below 1 bar (with the circuit
cold) restore normal pressure via the valve located
in the right side of the boiler and accessible from
the lateral hatch (Fig. 2-8).
N.B.: close the valve aer the operation.
If pressure values reach around 3 bar the safety
valve may be activated.
In this case contact a professional technician
for assistance.
In the event of frequent pressure drops, contact
qualified staff for assistance to eliminate the
possible system leakage.
2.9 SYSTEM DRAINING.
To drain the boiler, use the special draining valve
(Fig. 1-17).
Before draining, ensure that the lling valve is
closed.
2.10 DRAINING THE BOILER.
To drain the boiler, use the special draining valve
(Fig. 1-17).
N.B.: before performing this operation close the
boiler cold water inlet cock and open hot water
cock in the domestic water system in order to
allow water to enter the boiler.
2.11 ANTIFREEZE PROTECTION.
e boiler comes standard with an anti-freeze
function that activates the pump and burner
when the system water temperature in the boiler
falls below 4°C.
e anti-freeze function is only guaranteed if:
- the boiler is correctly connected to gas and elec-
tricity power supply circuits;
- the boiler is powered constantly;
- the boiler is not in stand-by( )
- the boiler is not in no ignition block;
- the boiler essential components are not faulty.
In the case of prolonged inactivity (second
home), we also recommend to:
- disconnect the electric power supply;
- the drain the central heating circuit and boiler
domestic hot water circuit. In systems that
are drained frequently, lling must be carried
out with suitably treated water to eliminate
hardness that can cause lime-scale.
2.12 CASE CLEANING.
Use damp cloths and neutral detergent to clean
the boiler casing. Never use abrasive or powder
detergents.
2.13 DECOMMISSIONING.
In the event of permanent shutdown of the boiler,
contact professional sta for the procedures and
ensure that the electrical, water and gas supply
lines are shut o and disconnected.
20 - IE
INSTALLATORUSERMAINTENANCE
2.14 PARAMETERS AND INFORMATION
MENU.
By pressing the button “D” it is possible to access
a menu divided into three main parts:
- “M1” information
- “M3” customisations
- “M5” congurations, menu reserved for the
technician and for which a password is required
(See “Technician” chapter).
By turning the central heating temperature se-
lector switch (3) scroll through the menu items.
By pressing button “D” access the various levels
of the menu and the choice of parameters is
conrmed. Press button “C” to go back one level.
1° Level Button 2° Level Button 3° Level Button Description
M1
D
C
P11 D
C
View the management soware version of the P.C.B. installed in the
boiler
P12 View the total functioning hours of the boiler
P13 View the number of burner ignitions
P14
(with optional
external probe
present)
- - -
(without external
probe (optional)
D
C
P14/A View the current external temperature (if optional external probe
present)
P14/B View the minimum external temperature recorded (if optional exter-
nal probe present)
P14/C View the maximum external temperature recorded (if optional exter-
nal probe present)
RESET
D
x
select
C
By pressing button “D” the MIN and MAX temperatures measured
are zeroed
P15
D
C
No display on this boiler model
P17 View the speed in instantaneous revs. of the fan
P18 e value displayed does not aect this model
P19
View the last 5 events that caused boiler shutdown. Indicator (6)
shows the sequential number from 1 to 5 and on indicator (7) the
relative error code.
By pressing button “D” repeatedly it is possible to view the functio-
ning time and the number of ignitions at which the anomaly occurred
Information Menu. is menu contains the various information relative to boiler functioning:
Customisation menu. is menu contains all
functioning options that can be customised.
(e rst item of the various options that appears
inside the parameter is that selected by default).
Important: if the international language is to be
restored (A1), proceed as follows:
- press button “D” to enter the conguration
menu.
- turn selector switch “3” to “PERSONAL”.
- press button “D” to conrm.
- turn selector switch “3” to “DATI”.
- press button “D” to conrm.
- turn selector switch “3” to “LINGUA”.
- press button “D” to conrm.
- turn selector switch “3” to “A1”.
- press button “D” to conrm.
At this point the international items indicated in
the menu tables appear on the display.
1° Level Button 2° Level Button 3° Level Button 4° Level Button Description
M3
D
C
P31
D
C
AUTO
(Default) D
x
select
C
e display lights up when the burner is
ignited and when the controls are acces-
sed, it remains on for 5 seconds aer the
last operation performed
ON e display is always lit up
OFF
e display only lights up when the
controls are accessed and remains on for 5
seconds aer the last operation performed
P32
D
C
P32/A
D
C
P32/A.1
(Default) D
x
select
C
e indicator (7) displays the output tem-
perature from the primary heat exchanger
P32/A.2
e indicator (7) displays the current ex-
ternal temperature (with optional external
probe)
P32/B
D
C
ITALIANO All descriptions are given in Italian
A1
(Default)
All descriptions are given in alphanume-
rical format
P33
D
C
OFF
D
x
select
C
In winter mode, by activating this fun-
ction it is possible to activate the room he-
ating function even if the eventual Remote
Control or TA are out of service.
ON
RESET
D
x
select
C
By pressing button “D” the customisations
made are zeroed, restoring the values set
in the factory
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