Biasi RINNOVA ADAPTIVE User manual

User manual and
installation
instructions
RINNOVA ADAPTIVE

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WARNING
Congratulations on choosing this product.
Your modulating boiler is electronically adjusted and ignited.
• It is highly efficient
• It has a sealed chamber
Unlike traditional boilers, your condensing boiler makes it possible to recover energy by condensing
the water vapour contained in the flue gas. This means that, with equal heat production, it consumes
less gas, and the flue gas contains fewer substances that are harmful to the environment.
The materials used and the control systems offer safety, high levels of comfort and energy savings so
you can appreciate the maximum advantages of autonomous heating.
IMPORTANT
The manual must be read carefully to ensure rational and safe use of the boiler. It must be stored
with care as it may be necessary to consult it in the future. If the unit is transferred to another owner,
the manual must accompany the boiler.
The initial switch-on must be carried out by an Authorised Service Centre. A list of these can be
found at www.biasi.it/assistenza. The validity of the warranty starts from the date the product is
purchased (see conditions listed on the specific certificate).
The manufacturer declines all liability for translations of this manual from which incorrect interpre-
tations may result. It cannot be considered responsible for failure to observe the instructions con-
tained in this manual or the consequences of any actions that have not been specifically described.
DURING INSTALLATION
After removing the packaging, make sure that the appliance is not damaged.
If damaged do not install or start up the appliance as it may be dangerous.
Contact your retailer or the nearest authorised service centre.
Installation must be carried out by qualified personnel who are responsible for compliance with all
applicable national and local laws and standards:
• the suitability of the installation site;
• the robustness of the wall intended for installation;
• the distance of the appliance from walls and surrounding objects;
• correct hook-up to the gas system;
• correct and safe set-up of the of air supply and combustion products evacuation system;
• correct hook-up to the electrical power supply and earth circuit;
• compliance with the technical specifications.
The boiler is used to heat water to a temperature that is lower than boiling point, and must be
connected to a heating system and/or a domestic hot water distribution network that is compatible
with its performance and power.
The boiler must be supplied with Methane gas (G20) or LPG (Propane G31).
The condensate discharge must be connected to the residential condensate outlet duct and it must
be possible to inspect it (UNI 7129-5 and related standards).

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WARNING
The boiler must only be used for the purpose for which it was designed. Furthermore:
• It must not be exposed to atmospheric agents.
• The appliance can be used by children no younger than 8 years old, by people with physical, sen-
sory or cognitive disabilities, and by people lacking experience or the necessary knowledge, pro-
vided that they are supervised or have received instructions on the safe use of the appliance and
understand the inherent risks. Do not let children play with the appliance. Do not allow unsuper-
vised children to perform user maintenance and cleaning.
• Prevent incorrect use of the boiler.
• Avoid making adjustments to the sealed devices.
• Avoid contact with hot parts during operation.
DURING USE
It is prohibited and dangerous to obstruct, even partially, the air intakes for the ventilation of the
room where the boiler is installed (UNI 7129-2 and related standards);
Repairs must only be carried out by authorised service centres using original spare parts. Therefore,
in the case of a problem, deactivate the boiler only (see instructions).
If you smell gas:
• Do not turn on electric switches, the telephone or any other object that could create sparks.
• Immediately open up the doors and windows to create an air current that cleans the room.
• Close the gas cocks.
• Request the intervention of professionally qualified personnel.
Before starting the boiler, have a qualified professional check that the gas supply system:
• Is perfectly sealed.
• Is the right size for the required flow rate to the boiler.
• Is equipped with the safety and control devices required by current standards;
• Make sure that the installer has connected the safety valve drain to a outlet funnel.
The manufacturer is not responsible for damage caused by the water released when the safety
valve opens, if it is not correctly connected to a drainage system.
• Make sure that the installer has connected the condensate siphon drain to a specific outlet funnel
(UNI 7129-5 and related standards), which must be implemented in order to avoid the condensate
freezing and ensure it is correctly drained.
Near the boiler:
• there must be an all-pole disconnection switch to isolate the appliance from the electric power
supply;
• a gas shut-off valve to interrupt the flow of fuel.
Do not touch the unit with wet or damp body parts and/or in bare feet.
If performing structural work or maintenance near the flue gas ducts and/or the flue gas exhaust
devices or their accessories, turn off the unit and, when the work is complete, have a qualified tech-
nician check the efficiency.

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WARNING
Appliance category: II2H3P (gas G20 20 mbar, G31 37 mbar)
Destination country: JO
This unit is compliant with the following European Directives:
• Regulation (EU) 2016/426 on appliances burning gaseous fuels
• Boiler Efficiency Directive: Article 7(2) and Annex III of 92/42/EEC
• Electromagnetic Compatibility Directive 2014/30/EU
• Low Voltage Directive 2014/35/EU
• Directive 2009/125/EC Ecodesign requirements of energy-related products
• Regulation (EU) 2017/1369 Energy labelling
• Delegated regulation (EU) no. 811/2013
•Delegated regulation (EU) no. 813/2013
• Delegated regulation (EU) no. 814/2013 (where applicable)
In order to constantly improve its products, the manufacturer reserves the right to change the data provided in this
documentation at any time and without notice.
This documentation is provided for information purposes and cannot be considered as a contract with third parties.
DANGER: Instructions marked with this symbol must be observed to prevent mechani-
cal or generic accidents (e.g. injuries or bruises).
DANGER: Instructions marked with this symbol must be observed to avoid electrical
accidents (electrocution).
DANGER: Instructions marked with this symbol must be observed to avoid the risk of
fire or explosions.
DANGER: Instructions marked with this symbol must be observed to avoid heat-related
accidents (burns).
WARNING: Instructions marked with this symbol must be observed to avoid malfunc-
tions and/or material damage to the unit or other items.
WARNING: Instructions marked with this symbol contain important information that
must be read carefully.
WARNING: Risk of cutting / stabbing. Protective gloves must be worn.

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TABLE OF CONTENTS
1 BOILER DESCRIPTION .....................6
1.1 Assembly view.................................6
1.2 Shut-off valves and cocks ......................6
1.3 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 General LCD characteristics.....................8
2 USER INSTRUCTIONS .....................12
2.1 Warnings .....................................12
2.2 Ignition.......................................12
2.3 Heating circuit temperature ...................13
2.4 Domestic hot water temperature ..............14
2.5 3 star preheating function.....................14
2.6 Shutdown ....................................15
3 USEFUL TIPS .............................16
3.1 Filling the heating circuit ......................16
3.2 Heating.......................................16
3.3 Antifreeze protection .........................16
3.4 Periodic maintenance .........................17
3.5 External cleaning .............................17
3.6 Operating anomalies..........................17
3.7 Displays in INFO mode ........................18
3.8 Remote fault code ............................19
3.9 Flue gas probe and thermal fuse...............19
4 TECHNICAL SPECIFICATIONS .............21
4.1 Assembly view................................21
4.2 Schematic diagram ...........................22
4.3 Wiring diagram ...............................24
4.4 Hydraulic characteristics ......................25
4.5 Expansion vessel..............................25
4.6 Technical data M300V.2025 SM . . . . . . . . . . . . . . . . 26
4.7 Technical data M300V.3035 SM . . . . . . . . . . . . . . . . 29
5 INSTALLATION ...........................32
5.1 Warnings .....................................32
5.2 Precautions for installation ....................33
5.3 Installing the boiler bracket ...................33
5.4 Dimensions...................................34
5.5 Fittings .......................................34
5.6 Boiler assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.7 Installing the flue gas exhaust duct ............35
5.8 Flue gas outlet dimensions and lengths........36
5.9 C63 exhaust-flue pipework ....................39
5.10 Positioning the draught terminals .............40
5.11 Electrical connections .........................41
5.12 Connecting a room thermostat or zone valves . 42
5.13 Installing the external temperature sensor .....43
5.14 Electrical connection between the boiler and
the external sensor............................43
5.15 Selecting the type of external sensor ..........44
5.16 Electrical connection of the remote (optional) . 45
5.17 Enabling operation with the external sensor
and setting the K coefficient...................45
5.18 Setting pump post-circulation.................48
5.19 Selecting re-ignition frequency................49
5.20 Examples of hydraulic systems with hydraulic
separator (optional) ...........................50
6 PREPARATION FOR SERVICE ..............52
6.1 Warnings .....................................52
6.2 Sequence of operations .......................52
7 CHECKING THE GAS SETTING .............54
7.1 Warnings .....................................54
7.2 Gas operations and setting ....................54
7.3 Automatic calibration of the gas valve .........55
8 GAS CONVERSION........................57
8.1 Warnings .....................................57
8.2 Gas operations and setting ....................57
9 MAINTENANCE...........................59
9.1 Warnings .....................................59
9.2 Programming the maintenance period ........59
9.3 Removing the body panels ....................60
9.4 Reinstalling the body panels ..................61
9.5 Emptying the DHW circuit.....................61
9.6 Emptying the heating circuit ..................61
9.7 Cleaning the primary condensate exchanger
and the burner................................62
9.8 Check the pressure in the heating expansion
tank ..........................................63
9.9 Cleaning the domestic hot water exchanger ...63
9.10 Checking the flue gas expulsion duct ..........63
9.11 Checking boiler efficiency .....................63
9.12 Checking the condensate discharge siphon....64
9.13 Setting the boiler's chimney sweep function ...64
9.14 Settings for changing the control board .......66
10BOILER DISPOSAL AND RECYCLING . . . . . . . 70
Models Boiler certification code
RINNOVA ADAPTIVE 25S M300V.2025 SM
RINNOVA ADAPTIVE 35S M300V.3035 SM

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BOILER DESCRIPTION
1 BOILER DESCRIPTION
1.1 Assembly view
The boiler model and serial number are print-
ed on the warranty certificate.
Figure 1.1
1
1 Control panel
1.2 Shut-off valves and cocks
Install a shut-off cock for the DHW
inlet.
The figures in this manual only
show one of the possible ways of
installing cocks, pipes and fittings.
Figure 1.2
2
4
11
5 6 7
9
10
3
8
2 Gas supply label
3 Heating circuit filling cock
4 Condensate outlet pipe
5 Heating delivery pipe
6 Domestic hot water outlet pipe
7 Gas cock
8 Heating circuit safety valve discharge pipe
9 Domestic hot water inlet cock
10 Heating return pipe
11 Heating circuit drain cock

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BOILER DESCRIPTION
1.3 Control panel
Figure 1.3
12
13
14
15
16
17
12 Domestic hot water temperature increase
button
13 Domestic hot water temperature decrease
button
14 Reset/Stand-by/Winter/Summer button
15 Heating temperature decrease button
16 Heating temperature increase button
17 LCD display
The RESET that restores all param-
eters to the factory settings occurs
only by setting "parameter
P30=04". When the reset is com-
plete, this is shown by all the sym-
bols on the display turning on.

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BOILER DESCRIPTION
1.4 General LCD characteristics
For the boiler technical specifications, consult
the section "TECHNICAL SPECIFICATIONS" on
page 21.
Figure 1.4
KEY
All symbols with lines radiat-
ing from them indicate that the
symbol is flashing.
Stays on: DHW function enabled.
Flashing: DHW function in prog-
ress.
Constantly illuminated: solar
control unit connected.
Flashing: solar pump operating.
Stays on: heating function en-
abled (winter).
Flashing: heating function in
progress.
Constantly illuminated: 3 star
preheating function active.
Flashing: 3 star preheating func-
tion in progress.
Stays on: for 15s only after sys-
tem loading.
Flashing: in the case of low sys-
tem pressure or if viewing the
pressure from the INFO menu.
Stays on: flame present
Flashing: drain upon ignition in
progress.
AStays on: maintenance due
pre-warning.
Flashing: maintenance required
or maintenance due.
bStays on: lockout error. The boil-
er can be restarted by the user,
by pressing the reset button.
Stays on: remote control con-
nected.
Flashing: request from remote
control in progress.
LCD SIGNALS
LCD FUNCTION
E01 + bSafety lockout due to
failed ignition.
E02 + bLockout due to safety
thermostat.
E03 + bGeneric lockout.
E04 + APump circulation failure,
insufficient system pres-
sure or water pressure
sensor not connected.
E05 + AControl anomaly:
fan.
E06 + ANTC heating delivery
probe failure.
E07 + ADHW NTC probe failure
/ Hot water tank sensor
failure.
E08 + AExternal NTC probe fail-
ure.
E10 + ALockout due to tripping
of the flue gas probe and
thermal fuse.

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BOILER DESCRIPTION
LCD FUNCTION
E11 + bParasite flame.
E12 + AReturn NTC probe failure.
E13 + ADelta T M-R > 40K.
E14 + bPump fault or prima-
ry temperature above
105°C.
E14 + ATemperature gradi-
ent circulation failure
(>2K/s).
E18 + bNo ∆T heating at start-
up.
E19 + AAuxiliary Input Probe
Anomaly.
E20 + bEVG lockout (valve pilot-
ing hardware failure).
E21 + bEVG lockout (valve con-
trol Relay Failure).
E22 + bEVG lockout (flame after
closing valve Ref. EVG).
E23 + AGas valve modulator dis-
connected.
E25 + bFlame loss for more than
6 consecutive times.
E26 + AMaximum deviation
fault between the 2 heat-
ing NTC probes.
LCD FUNCTION
E42 + AButtons fault.
E44 + bFault of cumulative gas
valve timeout without
flame.
E50 + AOT communication fault.
E62 + ACalibration request.
E89 + b
Internal error (usually
hardware) or problems
with the mains electrical
supply (excessive distor-
tion of waveform).
E91 + bMaximum number of
lockouts reached.
E96 Incorrect network fre-
quency.
E97 Power supply voltage
low.
E99 Card not configured.
L1 Primary limitation in
DHW mode.
Boiler stand-by, the dash-
es light up in sequence
to simulate a scrolling
motion (antifreeze pro-
tection activated).
When powering ON the
boiler, all icons and digits
light up (for 2 seconds)
to check operation of the
LCD.
If the pressure is not
correct the value is dis-
played with the flashing
symbol.

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BOILER DESCRIPTION
LCD FUNCTION
Next maintenance due
date (factory setting 12
months). In the event of
an error, this has greater
priority than mainte-
nance due date.
Maintenance overdue.
In the event of an error,
this has greater priority
than maintenance due
date.
Pump active for the
post-circulation phase
(flashing PO + flashing
temperature).
Boiler in antifreeze phase
(flashing bP + flashing
temperature).
Boiler with DHW power
request.
The DHW temperature is
displayed.
Boiler with central heat-
ing request via room
thermostat.
LCD FUNCTION
Boiler with central heat-
ing power request with
connected remote.
Heating set temperature
(all other symbols are
disabled).
DHW set temperature
(all other symbols are
disabled).
Delay burner ignition
due to system setting
(flashing uu + flashing
temperature).
Boiler in chimney sweep
function.
To activate the chimney
sweep function, set "pa-
rameter P32=1 ... 4". The
following is displayed:
LP = minimum DHW
hP = minimum output in
heating mode
cP = maximum output in
heating mode
dP=maximum DHW.
The transition occurs
with buttons 16 (in-
crease) and 13 (decrease)
DHW temperature.

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BOILER DESCRIPTION
LCD FUNCTION
3 star preheating func-
tion active.
When the symbol
flashes, the function is in
process.
Constantly illuminated:
solar control unit con-
nected.
When the symbol
flashes, the solar circuit
pump is in operation.

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USER INSTRUCTIONS
2 USER INSTRUCTIONS
2.1 Warnings
Check that the heating circuit is
correctly filled with water, even if
the boiler is only used for produc-
ing domestic hot water.
If it is not, proceed with filling; see section
"Filling the heating circuit" on page 16.
All boilers have an antifreeze system that is
activated if the temperature falls below 5°C;
therefore do not turn off the boiler.
If the boiler is not used during cold periods,
with the resulting risk of freezing, proceed as
described in section "Antifreeze protection" on
page 16.
2.2 Ignition
• The boiler cocks and the cocks used during
installation must be open (Figure 2.1).
Figure 2.1
Open
position
• Power the boiler by turning on the two-way
switch fitted during installation. The LCD
display shows the boiler status (last stored)
Figure 2.2.
Figure 2.2
Stand-by
The dashes light up in
sequence to simulate
a scrolling motion
Winter
Summer
When the boiler is in Winter or Summer mode
and there is no heat request, the display shows
the pressure in the heating circuit (e.g. 1.3 bar
in Figure 2.2).
Heating/DHW operation
• Press button 14 for 1 seconds until both
symbols and appear on the dis-
play (Figure 2.3).
Figure 2.3
12
13
14
15
16
17
The LCD display shows the boiler temperature
(primary circuit) and the symbols and
(Figure 2.4).

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USER INSTRUCTIONS
Figure 2.4
Operation with production of hot water
only
• Press button 14 for 1 second until the symbol
appears on the display (Figure 2.5).
Figure 2.5
12
13
14
15
16
17
The LCD display shows the boiler temperature
(primary circuit) and the symbol (Figure
2.6).
Figure 2.6
2.3 Heating circuit temperature
The heating delivery temperature of the hot
water can be adjusted using the buttons 15 (de-
crease) and 16 (increase) (Figure 2.5) to between
a minimum of approx. 25°C and a maximum of
approx. 80°C. The first time one of those but-
tons is pressed, the "set" value is displayed. The
second time it is pressed this can be changed.
Signal on the LCD display:
• the “set” value of the heating delivery hot
water temperature and the symbol flash.
The display background lights up (Figure
2.7).
Figure 2.7
Adjusting the heating temperature based
on the outdoor temperature (without ex-
ternal sensor)
Adjust the heating delivery hot water tem-
perature as follows:
• between 25 and 35 with an external tem-
perature between 5 and 15°C
• from 35 to 60 with an outdoor temperature
of between -5°C and +5°C
• from 60 to 80 with an outdoor temperature
of below -5°C.
Your qualified installer may suggest more suit-
able settings for your system.
The set temperature has been reached when
the symbol is not visible on the LCD display.
Heating power demand
When the boiler receives a heating power re-
quest, the display shows the symbol fol-
lowed by an increase in the heating delivery
water temperature. The symbol flashes
(Figure 2.8).
Figure 2.8

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USER INSTRUCTIONS
Adjusting the heating temperature with an
external sensor installed
When the optional external sensor is installed,
your boiler will automatically adjust the heat-
ing system's delivery water temperature ac-
cording to the outdoor temperature.
In this case, the boiler must be set by a quali-
fied installer (see "Enabling operation with the
external sensor and setting the K coefficient"
on page 45).
If the room temperature is not comfortable,
you can increase or decrease the heating sys-
tem delivery temperature by ± 15°C using the
15 (decrease) and 16 (increase) buttons (Figure
2.5).
2.4 Domestic hot water temperature
The domestic hot water temperature can be
adjusted using the 12 (increase) and 13 (de-
crease) buttons (Figure 2.5) from a minimum
of approx. 35°C to a maximum of approx.
60°C. The first time one of these two buttons
is pressed, the “set” value is displayed. The
second time it is pressed, the value can be
changed.
Signal on the LCD display:
• the“set”value of the domestic hot water and
the symbol flash. The display back-
ground lights up (Figure 2.7).
Figure 2.9
Adjustments
Adjust the temperature of the domestic hot
water to a value that suits your needs.
Limit the need to mix hot water with cold wa-
ter.
In this way, you can take full advantage of the
automatic setting.
If the water is particularly hard, we recommend
setting the boiler temperature to below 50°C.
In such cases, we recommend installing a wa-
ter softener in the DHW system.
If the maximum flow rate of the domestic hot
water is too high for a sufficient temperature
to be reached, contact an authorised support
technician to install a flow rate limiter.
Domestic hot water demand
When the boiler receives a request for domes-
tic hot water, the display shows the symbol
followed by an increase in the temperature
of the domestic hot water. The symbol
flashes (Figure 2.10).
Figure 2.10
2.5 3 star preheating function
This function reduces consumption of the do-
mestic hot water supply at the time of with-
drawal, preparing the boiler temperature at
the requested temperature.
To activate the 3 star preheating function press
keys 12 and 13 together (Figure 2.12) until the
symbol appears on the LCD display.
When the symbol flashes, the function is in
process.
Figure 2.11
N.B.: should the power to the boiler fail, wait
at least one minute before activating the func-
tion upon reactivation.
To disable the 3 star preheating function press
keys 12 and 13 (Figure 2.12) until the symbol
disappears from the LCD display.

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USER INSTRUCTIONS
2.6 Shutdown
Press button 14 (Figure 2.12) for 5 seconds un-
til the symbol appears on the display
(the dashes light up in sequence to simulate a
scrolling motion) (Figure 2.13).
Figure 2.12
12
13
14
15
16
17
Figure 2.13
If the boiler will be inactive for a long period
of time:
• Disconnect the boiler from the electric pow-
er supply;
• Close the boiler cocks Figure 2.14;
Figure 2.14
Closed
position
• If necessary, empty the hydraulic circuits (see
section "Emptying the DHW circuit" on page
61 and section "Emptying the heating cir-
cuit" on page 61).

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USEFUL TIPS
3 USEFUL TIPS
3.1 Filling the heating circuit
Figure 3.1
OPEN
CLOSED
Heating circuit filling
cock
Press keys 15 and 16 at the same time to access
the "INFO" menu (information).
The index value "J00" will be shown on the dis-
play in alternation with the pressure value "13"
(1.3 bar). The number indicating the pressure
is displayed without a decimal point, and the
letter indicates the unit of measure (bar) (Fig-
ure 3.2).
Figure 3.2
Open the filling cock in Figure 3.1 located un-
der the boiler and at the same time check the
heating circuit pressure on the display.
The pressure must be between 1 bar and 1.5
bar (e.g. 1.3 bar in Figure 3.2).
When the operation is complete, close the fill-
ing cock and bleed any air from the radiators.
3.2 Heating
For rational and economical service, have a
room thermostat installed.
Never turn off the radiator in the room where
the room thermostat is installed.
If a radiator (or convector) does not heat up,
check if there is any air in the system and make
sure that the cock is open.
If the room temperature is too high, do not
adjust the radiator cocks but decrease the
heating temperature setting using the room
thermostat or the heating control buttons 15
and 16 (Figure 3.3).
Figure 3.3
12
13
14
15
16
17
3.3 Antifreeze protection
The antifreeze system, and any additional pro-
tective devices, safeguard the boiler against
possible damage due to freezing.
This system does not guarantee protection for
the entire hydraulic system.
Where the outdoor temperature could fall be-
low 0°C, it is recommended to leave the entire
system on, setting the room thermostat to a
low temperature.
The antifreeze function is active even if the
boiler is in stand-by (Figure 3.4).

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USEFUL TIPS
Figure 3.4
If the boiler is turned off, have a qualified tech-
nician empty the boiler (heating and DHW
circuit) and empty the heating system and the
DHW system.
3.4 Periodic maintenance
For efficient and regular boiler operation, it is
recommended that the boiler be serviced and
cleaned at least once a year by a technician
from an authorised service centre.
During this check, the most important boiler
components are inspected and cleaned. This
check may be performed within the scope of
a maintenance contract.
3.5 External cleaning
Before performing any cleaning
operation, disconnect the boiler
from the electric mains supply.
To clean, use a cloth soaked in soap and water.
Do not use: Solvents, flammable substances
or abrasive substances.
3.6 Operating anomalies
If the boiler is not operating and a code ap-
pears on the LCD display that is preceded by
the letter "E" and the message RESET (see
"General LCD characteristics" on page 8)
the boiler is in lockout. The background of the
display will flash (Figure 3.5).
Figure 3.5
To restore operation, press the reset button 14
(Figure 3.3) on the boiler control panel.
Frequent safety lockouts should
be reported to an authorised ser-
vice centre.
After three reset attempts made by pressing
the reset key 14 (Figure 3.3), code “E91” and
the symbol A(Figure 3.6) appear on the
LCD display. The boiler is in lockout mode.
Figure 3.6
To restore boiler operation, disconnect the
electrical power supply. Then, reconnect it and
press buttons 12, 13 and 14 (Figure 3.3) on the
boiler control panel at the same time for at
least 5s.
Other possible anomalies shown on the LCD
display
If the LCD display shows a code preceded by
the letter Eand the symbol Athe boiler has
an anomaly that cannot be reset.
The background of the display will flash (Fig-
ure 3.7).

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USEFUL TIPS
Figure 3.7
Another possible notification occurs when the
DHW exchanger is not able to exchange all the
power delivered by the boiler.
E.g. DHW exchanger blocked by lime scale.
This occurs only when domestic hot water is
requested from the boiler.
Code L1 appears on the LCD display. The back-
ground of the display will flash (Figure 3.8).
Figure 3.8
To restore correct boiler operation,
contact a technician from an au-
thorised service centre.
Air bubble noises
Check the pressure of the heating circuit and
fill it if necessary, see section "Filling the heat-
ing circuit" on page 16.
Low system pressure
Add more water to the heating system.
To do this, refer to section "Filling the heating
circuit" on page 16.
The user is responsible for periodically check-
ing the pressure of the heating system.
If water needs to be added too often, have the
technical support centre check if there are any
leaks in the heating system or the boiler itself.
Water leaks from the safety valve
Check if the filling cock is closed tightly (see
"Filling the heating circuit" on page 16).
Check on the pressure gauge that the heating
circuit pressure is not close to 3 bar. Should
this be the case, drain a part of the water from
the system through the air relief valves in the
radiators in order to reduce the pressure to a
normal value.
In the case of malfunctions other
than those described above, shut
down the boiler as described in
section "Shutdown" on page 15
and call a technician from the au-
thorised service centre.
3.7 Displays in INFO mode
INFO mode is used to view boiler status infor-
mation. In the case of a boiler malfunction,
provide this information to the service centre
so that they can work out its causes.
To access the INFO mode, press keys 15 and
16 (Figure 3.9) together until the index "J00"
is shown on the display in alteration with the
parameter value (Figure 3.10).
Figure 3.9
12
13
14
15
16
17

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USEFUL TIPS
Figure 3.10
To scroll through the values, press the 13 key
(previous INFO) and 15 key (next INFO).
To exit INFO mode, simply:
• wait 15 minutes without pressing any key;
• switch off the electric power supply;
• press and hold the 13 and 15 keys simulta-
neously for 5 seconds (Figure 3.9) (one level
up).
The table summarises the possible values visi-
ble in INFO mode.
Value shown Table of
contents
Primary circuit pressure J00 + value
Outdoor temperature J01 + value
K curve value configured on
site J02 + value
Offset climatic curve value J03 + value
Calculated heating set point
(with climatic curve or set
configured)
J04 + value
Delivery NTC temperature J05 + value
Return NTC temperature J06 + value
DHW set J07 + value
DHW inlet temperature (if
foreseen) J08 + ---
DHW outlet temperature J09 + value
DHW capacity J10 + value
Flue gas temperature
(if foreseen) J11 + ---
Fan speed J12 + value
Flue gas pressure transducer
(if foreseen) J13 + ---
Ionisation current value J14 + value
Number of months to main-
tenance J15 + value
3 star status
(ON=01, OFF=00) J16 + value
Modulation percentage J17 + value
Pump modulation percent-
age J18 + value
Delivery 2 temperature
(if foreseen) J19 + value
M.B. version J20 + value
Main SW version J21 + value
3.8 Remote fault code
If the optional remote is connected to the boil-
er, a code can be shown on the central part of
the display that indicates a boiler anomaly.
The current anomaly is indicated by a numeric
code followed by the letter E.
The anomaly codes sent to the remote are the
same as those shown on the display (see "LCD
SIGNALS" on page 8).
3.9 Flue gas probe and thermal fuse
Thermofuse tripping involves a
safety lockout, and requires reset-
ting by an Authorised Service Cen-
tre.
The flue gas probe and thermal fuse 18 indicat-
ed in Figure 3.11 are safety devices.
The flue gas probe and 18 are triggered when
the flue gas temperature exceeds 110°C, acti-
vating the boiler safety lockout, shutting it off.
To reset normal boiler operation simply press
the button 14 (Figure 3.9).

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USEFUL TIPS
If the flue probe 18 does not trip and, therefore
does not send the boiler into safety lockout,
the thermal fuse 18 activates as a further mea-
sure to protect the flue gas outlet.
To restore the normal operation of the boiler,
contact the Authorised Service Centre.
Figure 3.11
18