A
en
BUILT IN CONDENSING GAS WALL-HUNG BOILERS
Instructions manual for users and fitters
Dear Customer,
Our company is confident our new product will meet all your requirements. Buying one of our products guarantees all your
expectations: good performance combined with simple and rational use.
Please do not put this booklet away without reading it first: it contains useful information for the correct and efficient use of your
product.
Our company declares that these products are marked
in compliance with the essential requirements of the
following Directives:
- Gas Directive 2009/142/EC
- Efficiency Directive 92/42/EEC
- Electromagnetic Compatibility Directive 2014/30/EU
- Low Voltage Directive 2014/35/EU
- Ecodesign directive 2009/125/EC
- Energy labelling directive 2010/30/EU (for boilers with Power<70kW)
- Ecodesign regulation (EU) No 813/2013
- Energy labelling regulation (EU) No 811/2013 (for boilers with Power<70kW)
User & Installer (en)
Our company, constantly striving to improve the products, reserves the right to modify the details given in this documentation
at any time and without notice. These Instructions are only meant to provide consumers with use information and under no
circumstance should they be construed as a contract with a third party.
The appliance can be used by children aged 8 or over and by people with reduced
physical, sensory or mental faculties, or who do not have the required experience
or knowledge, provided they are supervised or have received instructions on using
the appliance safely and understanding its intrinsic hazards. Children must not play
with the appliance. The cleaning and maintenance operations reserved to the user
must not be performed by unsupervised children.
7689490.01 (1-09/17)
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CONTENT
3
7689490.01 (1-09/17)
User & Installer (en)
DESCRIPTION OF SYMBOLS......................................................................................................................................................................4
SAFETY WARNINGS.....................................................................................................................................................................................4
GENERAL PRECAUTIONS ..........................................................................................................................................................................5
ENERGY-SAVING TIPS.................................................................................................................................................................................5
1.
COMMISSIONING THE BOILER...................................................................................................................................................................6
1.1 SYMBOL MEANING................................................................................................................................................................................7
(SUMMER - WINTER - HEATING ONLY - OFF).......................................................................................7
1.2 DESCRIPTION OF BUTTON
(AUTOMATIC-MANUAL-OFF)................................................................................................................7
1.3 DESCRIPTION OF BUTTON
1.4 ROOM AND DOMESTIC HOT WATER (D.H.W.) TEMPERATURE ADJUSTMENT......................................................................................7
1.5 PROGRAMMING (PROGR)...........................................................................................................................................................................7
1.6 PROGRAMMING HEATING MODE OPERATION TIMES.............................................................................................................................8
1.7 PROGRAMMING DHW MODE OPERATION TIMES....................................................................................................................................9
..............................................................................................................................................9
1.8 ECONOMY - COMFORT FUNCTION
1.9 SHOWER FUNCTION...................................................................................................................................................................................9
BUTTON.....................................................................................10
1.10 TEMPERATURE VALUES MODIFICATION BY PRESSING THE
1.11 PROGRAMMABLE SWITCHING TIME FUNCTION (BUTTON )..............................................................................................................10
2.
PROLONGED SHUTDOWN. ANTI-FREEZE PROTECTION........................................................................................................................10
3.
GAS CONVERSION......................................................................................................................................................................................11
4.
TROUBLESHOOTING...................................................................................................................................................................................11
5.
SWITCHING OFF THE BOILER....................................................................................................................................................................12
6.
FILLING THE SYSTEM..................................................................................................................................................................................12
7.
ROUTINE MAINTENANCE INSTRUCTIONS................................................................................................................................................12
INSTRUCTIONS PRIOR TO INSTALLATION................................................................................................................................................13
8.
INSTALLING THE BOILER............................................................................................................................................................................13
CONTENTS OF PACK...................................................................................................................................................................................13
8.1 RECESSED INSTALLATION OUTDOORS....................................................................................................................................................14
8.2 WALL-MOUNTED INSTALLATION OUTDOORS IN PARTIALLY SHELTERED AREAS...............................................................................14
8.3 WALL-MOUNTED OPEN AIR INSTALLATION OUTDOORS........................................................................................................................15
9.
FILLING THE SYSTEM..................................................................................................................................................................................15
10. INSTALLING THE DUCTS.............................................................................................................................................................................16
10.1 CONCENTRIC DUCTS..................................................................................................................................................................................17
10.2 SEPARATE DUCTS.......................................................................................................................................................................................17
SEPARATE DUCTS (TYPE B23)...................................................................................................................................................................17
SEPARATE DUCTS WITH SHELTER KIT (TYPE B23).................................................................................................................................17
11.
ELECTRICAL CONNECTIONS......................................................................................................................................................................18
11.1 INSTALLING THE REMOTE CONTROL ON THE WALL..............................................................................................................................19
11.2 CONNECTING TO A ZONE SYSTEM...........................................................................................................................................................20
11.3 CONNECTING THE ROOM THERMOSTAT..................................................................................................................................................21
11.4 ACCESSORIES NOT INCLUDED IN THE SUPPLY......................................................................................................................................21
12. SPECIAL FUNCTIONS..................................................................................................................................................................................22
12.1 INITIAL IGNITION..........................................................................................................................................................................................22
12.2 SYSTEM GAS EXTRACTION FUNCTION....................................................................................................................................................22
12.3 CHIMNEY SWEEPER....................................................................................................................................................................................23
12.4 COMBUSTION TEST (CO2)...........................................................................................................................................................................23
COMBUSTION ADJUSTMENT FUNCTION (CO2%).....................................................................................................................................23
13. GAS VALVE....................................................................................................................................................................................................24
13.1 GAS CONVERSION METHODS...................................................................................................................................................................24
14. BOILER INFORMATION MENU ...................................................................................................................................................................24
15. PARAMETERS SETTING..............................................................................................................................................................................25
15.1 ADJUSTING MAXIMUM HEATING POWER.................................................................................................................................................27
16. TROUBLESHOOTING SERVICE FAULTS....................................................................................................................................................27
17. ADJUSTMENT AND SAFETY DEVICES.......................................................................................................................................................29
18. PUMP CAPACITY/ HEAD..............................................................................................................................................................................29
19. POSITIONING THE ELECTRODES..............................................................................................................................................................29
20. ANNUAL SERVICING....................................................................................................................................................................................30
20.1 HYDRAULIC UNIT.........................................................................................................................................................................................30
20.2 CLEANING THE FILTERS.............................................................................................................................................................................30
20.3 DISMOUNTING THE WATER-WATER HEAT EXCHANGER........................................................................................................................30
20.4 REPLACEMENT OF PARTS..........................................................................................................................................................................31
AUTOMATIC CALIBRATION FUNCTION......................................................................................................................................................31
21. DISMANTLING, DISPOSAL AND RECYCLING............................................................................................................................................31
22. TECHNICAL SPECIFICATIONS....................................................................................................................................................................32
23. TECHNICAL PARAMETERS.........................................................................................................................................................................33
24. PRODUCT FICHE..........................................................................................................................................................................................34
DESCRIPTION OF SYMBOLS
WARNING
Risk of damage to, or malfunction of the appliance. Pay special attention to the warnings concerning
danger to people.
DANGER OF BURNS
Wait for the appliance to cool down before working on the parts exposed to heat.
DANGER - HIGH VOLTAGE
Live components - electrocution hazard.
DANGER OF FREEZING
Possible formation of ice due to low temperatures.
User & Installer (en)
IMPORTANT INFORMATION
Information to read with particular care as it is useful for the correct operation of the boiler.
GENERIC PROHIBITION
It is forbidden to do/use the things indicated alongside the symbol.
SAFETY WARNINGS
SMELL OF GAS
•
•
•
•
Switch off the boiler.
Do not activate any electrical device (such as switching on the light).
Put out any naked flames and open the windows.
Call an Authorised Service Centre.
SMELL OF COMBUSTION FUMES
• Switch off the boiler.
• Open all the doors and windows to ventilate the room.
• Call an Authorised Service Centre.
FLAMMABLE MATERIAL
Do not use and/or store highly flammable material (thinners, paper, etc.) near the boiler.
SERVICING AND CLEANING THE BOILER
Switch off the boiler before working on it.
The appliance is not intended to be used by persons with reduced physical, sensory or mental capacities, or who lack
experience or knowledge, unless, through the mediation of a person responsible for their safety, they have had the benefit
of supervision or of instructions on the use of the appliance.
Frost protection can be enabled only when the appliance is powered up, the supply of gas is active and the pressure in the
system is within the recommended range. All the shut-off valves of the boiler must remain open. Our company cannot accept
liability
when these requirements are not observed.
There must be a gas shut-off valve at a point upstream of the appliance where it can be found and accessed with ease.
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GENERAL PRECAUTIONS
This boiler has been designed to heat water to a temperature lower than boiling point at atmospheric pressure. It must be
connected to a central heating system and to a domestic hot water supply system according to its performance and power output.
Before having the boiler installed by a qualified service engineer, make sure the following operations are performed:
• Make sure that the boiler is adjusted to use the type of gas delivered by the gas supply. To do this, check the markings on the
packaging and the data label on the appliance. • Make sure that the flue terminal draft is appropriate, that the terminal is not obstructed and that no exhaust gases from other
appliances are expelled through the same flue duct, unless the latter has been specially designed to collect exhaust gas from
more than one appliance, in compliance with current laws and regulations.
• Make sure that, if the boiler is connected to existing flue ducts, these have been thoroughly cleaned as residual products of
combustion may detach from the walls during operation and obstruct the flow of fumes.
• To ensure correct operation and maintain the warranty, observe the following precautions:
1. DHW circuit
1.1 If the water is harder than 20 °F (1 °F = 10 mg calcium carbonate per litre of water), install a polyphosphate dispenser or an
equivalent treatment system, compliant with current regulations.
1.2 Thoroughly flush the system after installation of the appliance and before use.
1.3 The materials used for the DHW circuit comply with Directive 98/83/EC.
2. Heating circuit
2.2 Existing system: Before installing the boiler, drain the system and clean it to remove sludge and contaminants, using suitable
proprietary products. Recommended cleaning products are: SENTINEL X300 or X400 and FERNOX regenerator for heating
circuits. Use these products in strict compliance with the manufacturers' instructions. Remember that the presence of foreign
bodies in the heating system can adversely affect boiler operation (e.g. overheating and excessive noise of the heat exchanger).
Initial lighting of the boiler must be carried out by an authorised Service Engineer who must first ensure that:
• The rated data correspond to the supply (electricity, water and gas) data.
• That the installation complies with current regulations.
• The appliance is correctly connected to the power supply and earthed. Failure to observe the above will render the warranty null and void. Prior to commissioning, remove the protective plastic
coating from the boiler. Do not use any tools or abrasive detergents to do this as you may damage the painted surfaces.
Do not leave any packaging (plastic bags, polystyrene, etc.) within the reach of children as they are a potential source of danger.
ENERGY-SAVING TIPS
Adjustment in the heating mode Adjust the boiler flow temperature depending on the kind of system. For systems with radiators, set a maximum heating water
flow temperature of approximately 60°C and increase this value if the required room temperature is not reached. For systems with
radiant floor panels, do not exceed the temperature indicated by the system designer. Use the External Sensor and/or Control
Panel to automatically adjust the flow temperature to atmospheric conditions or the indoor temperature. This ensures that no more
heat than that effectively necessary is produced. Adjust the room temperature without overheating the rooms. Every extra degree
centigrade means consuming approximately 6% more. Also room ambient temperature depending on how the rooms are used.
For example, the bedroom or the least used rooms can be heated to a lower temperature. Use the programmable timer and set the
night-time room temperature at approximately 5°C lower than that during the day. There is no appreciable saving to be achieved
by setting it any lower. Only in case of a prolonged absence, such as a holiday, should the temperature setpoint be lowered. Do
not cover radiators as this prevents the air from circulating correctly. Do not leave the windows partially open to ventilate the rooms
but open them completely for a short period.
Domestic hot water Setting the domestic hot water at the required temperature without mixing it with cold water saves a lot of money. Additional
heating wastes energy and creates additional scale.
BAXI a leading European manufacturer of hi-tech boilers and heating systems, has developed
CSQ-certified quality management (ISO 9001), environmental (ISO 14001) and health and
safety (OHSAS 18001) systems. This means that BAXI S.p.A. includes among its objectives the
safeguarding of the environment, the reliability and quality of its products, and the health and
safety of its employees.
Through its organisation, the company is constantly committed to implementing and improving
these aspects in favour of customer satisfaction.
5
7689490.01 (1-09/17)
User & Installer (en)
2.1 New system: Before installing the boiler, the system must be cleaned and flushed to eliminate residual thread-cutting swarf,
solder and any solvents, using suitable off-the-shelf non-acid and non-alkaline products that do not damage metal, plastic and
rubber parts. To protect the system from scale, use inhibitors such as SENTINEL X100 and FERNOX protector for heating circuits.
Use these products in strict compliance with the manufacturers' instructions.
1.
COMMISSIONING THE BOILER
To correctly light the boiler proceed as follows:
• Provide power supply to the boiler.
• Open the gas cock.
button (following figure) to set the gas boiler mode as described in section "DESCRIPTION OF BUTTON
• Press the
(Summer - Winter - Heating only - Off)".
If summertime mode is setting
, the boiler will light only during a D.H.W. demand.
• To adjust the CH and D.H.W. temperature, press the +/- respective buttons as described in section "ROOM AND DOMESTIC
HOT WATER (D.H.W.) TEMPERATURE ADJUSTMENT".
USER Section (en)
1
2
8
3
7
4
6
5
s
e
r
q
p
o
n
m
f
l
a
b
c
d
g
h
i
1
Information/Programming button
5
2
3
4
Timing function
Central Heating temperature regulation
Confirmation button
6
7
8
Setting programmed operation in heating mode
Manual/Automatic/Off
Economy-Comfort button
Enabling Summer-Winter-Heating only-Off
Domestic Hot Water temperature regulation
a
b
c
d
e
f
g
h
D.H.W. mode
CH mode
Standby
Timing mode
Manual mode
Delayed mode
Time format / displaying information
Week days
l
m
n
o
p
q
r
s
Pcb (boiler) parameters
Burner lighted
Fault in progress
Modulating flame level (boiler power level)
Communication with the gas boiler in progress
Reduced setpoint temperature mode
Comfort setpoint temperature mode
Time switch program histogram
i
Battery level
7689490.01 (1-09/17)
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1.1 SYMBOL MEANING
There are 4 power levels displayed during boiler operation, relevant to the gas boiler modulation, as shown in figure to side.
1.2 DESCRIPTION OF BUTTON
(Summer - Winter - Heating only - Off)
Press this button to set the following boiler operation modes:
• SUMMER
• WINTER
• HEATING ONLY
• OFF
is shown on the display. The boiler only meets DHW demands; heating mode is not enabled
In SUMMER mode the symbol
(frost protection function is enable).
In WINTER mode the symbols
are shown on the display. The boiler meets DHW and heating mode demands (frost
protection function activated).
In HEATING ONLY mode the symbol
is shown on the display. The boiler only meets heating mode demands (frost protection
function is enable).
If OFF is selected, neither of the two symbols
is displayed. In this mode only the frost protection function is enabled and
any other demands in DHW or heating mode are not met.
1.3 DESCRIPTION OF BUTTON
(AUTOMATIC-MANUAL-OFF)
By pressing this button it is possible to set one of the following Heating modes:
AUTO - MANUAL - OFF as describe below.
)
AUTO (displayed symbol
The Heat request depends on the type of the “Time Programs” set (COMFORT room temperature " " or reduced room temperature
" "). See section "PROGRAMMING HEATING MODE OPERATION TIMES" to set the programming heating mode.
MANUAL (displayed symbol )
This function disables the “Time Programming” in Heating mode. Press the +/- button to set the room temperature value.
OFF (displayed symbol
)
This function disables the Heating mode and the display shows the
symbol (the frost protection is enabled).
1.4 ROOM AND DOMESTIC HOT WATER (D.H.W.) TEMPERATURE ADJUSTMENT
The room
and D.H.W.
temperature adjustment are carried out by pressing the relative +/- buttons (see figure in section
"COMMISSIONING THE BOILER"). When the burner is lighted the display shows the symbol as described in section " SYMBOL MEANING".
CENTRAL HEATING (CH)
During a CH mode, the display shows a CH
symbol and the room temperature value °C.
During a temperature regulation, the display shows “AMB”.
DOMESTIC HOT WATER (D.H.W.)
During a D.H.W. request, the display shows a D.H.W.
symbol and the room temperature value (°C).
During a temperature regulation, the display shows "HW SP".
if an external water tank is connected to the gas boiler, during a domestic hot water request, the display shows a
and the room temperature value (°C).
symbol
1.5 PROGRAMMING (PROGR)
SETTING THE DATE-TIME
Press the IP button: the display shows (briefly) the message PROGR and the time starts flashing.
If no button is pressed the function ends automatically after approx. 1 minute.
• Use the buttons +/- to set the hour;
• Press the OK button;
to set the minutes;
• Use the buttons +/- • Press the OK button;
to set the day of the week "Day" (1…7 corresponding to Monday…Sunday);
• Use the buttons +/- Press the IP button to exit DATE-TIME setting.
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7689490.01 (1-09/17)
USER Section (en)
1.6 PROGRAMMING HEATING MODE OPERATION TIMES
To enable the function, press the
button (the display shows the
symbol).
Time period programming allows the setting of boiler automatic operation in heating mode in fixed time slots and on fixed days of
the week. Boiler operation settings can be made for single days or groups of consecutive days.
1.6.1 Single days
Four time bands (4 boiler activation and deactivation periods in heating mode even with different times from day to day) are
available for every day selected, as shown in the following table:
USER Section (en)
MONDY
TUEDY
WEDDY
THUDY
FRIDY
SATDY
SUNDY
DAY 1
DAY 2
DAY 3
DAY 4
DAY 5
DAY 6
DAY 7
(monday)
(tuesday)
(wednesday)
(thursday)
(friday)
(saturday)
(sunday)
On 1
Of 1
On 2
06:00
08:00
11:00
FACTORY SETTINGS
Of 2
On 3
13:00
17:00
Of 3
On 4
Of 4
23:00
24:00
24:00
To set a single time band, proceed as follows:
• Press the IP button and then the button ;
;
• choose a day of the week (1…7) by repeatedly pressing the buttons +/- • press the OK button;
• the display shows the message on 1 and the 4 digits of the time flashing, as shown in the
figure to side;
to set the boiler lighting time;
• use the buttons +/- • press the OK button;
• the display shows the message of 1 and the 4 digits of the time flashing;
to set the boiler switching off time;
• use the buttons +/- • press the OK button;
• repeat the same operations from point 4 to set the remaining three time bands;
• press the IP button to exit the function.
2
1 Programming in HEATING MODE
PROGRAMMED TIME BAND
2
09:00 - 12:00
3 Day of the week: Monday
1
By setting the lighting time "on…" equal to the
switching off time "of…", the time band is cancelled and
the program goes to the next time slot. (ex. on1=09:00
– of1=09:00 he programme “skips” time band 1 and continues
with on2…).
3
1.6.2 Groups of days
This function enables the programming of 4 common boiler activation and deactivation time slots for several days or the entire
week (see the summary table below).
To set a single time band, proceed as follows:
• Press the IP button and then the button
;
;
• Select a GROUP of days by repeatedly pressing the buttons +/- • press the OK button;
• repeat the operations described in points 4-10 of paragraph "Single days".
Summary table of available groups of days
Group “MO-FR”
DAY
1
2
3
4
5
Group “SA-SU”
DAY
Group “MO-SA”
DAY
1
2
3
4
5
6
Group “MO-SU”
DAY
1
2
3
4
5
6
from Monday to Friday
6
7
Saturday and Sunday
from Monday to Saturday
7
every day of the week
7689490.01 (1-09/17)
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FACTORY SETTINGS
As per table in paragraph “Single
days”.
07:00 – 23:00
As per table in paragraph “Single
days”.
As per table in paragraph “Single
days”.
1.7 PROGRAMMING DHW MODE OPERATION TIMES
(only for boilers connected to an external heater)
This function enables the programming of four boiler DHW mode operation time slots in the
span of a week (the programmed time slots are the same for every day of the week).
To set the programming of DHW mode operation times, proceed as follows:
• Press the IP button and then the button
to enter the programming (heating and
DHW modes);
;
• Select the DHW programme “HW PR” by repeatedly pressing the buttons +/- • Press the OK button;
• Set the time slots in which you can enable DHW mode operation by repeating the operations described in points 4-10 of
paragraph "Single days" (factory setting 06:00 - 23:00).
the installer has to set “HW PR” parameter = 2, as described in section "INFORMATION AND ADVANCED SETTING MODE".
1 Programming in DHW MODE
PROGRAMMED TIME BAND
2
09:00 - 12:00
3 Days of the week
2
1
DAY
1234567
DAY
1234567
3
1.8 ECONOMY - COMFORT FUNCTION
This function enables the user to set two different room temperature setpoints:
Economy / Comfort.
For more simplicity it’s better to set the COMFORT value temperature higher than the ECONOMY value temperature.
To set the required room temperature, press the
button:
• the "ECONM" iwriting shows the operating in reduced room temperature mode: display shows symbol;
symbol;
• the "COMFR" writing shows the operating in nominal room temperature mode: display shows
buttons or see section "TEMPERATURE VALUES
To temporary change the setting room temperature value, press +/- MODIFICATION BY PRESSING THE
BUTTON".
This function could operates in automatic or in manual mode:
AUTOMATIC OPERATION (displayed symbol
)
The setting room temperature depends on the time slot (section "PROGRAMMING HEATING MODE OPERATION TIMES").
Inside the time slot the room temperature is the COMFORT value, outside the time slot the room temperature is the ECONM value.
To temporary change the room temperature value (from COMFORT to ECONOMY or vice versa) press the
button. This
changes has effect until the next time change over.
MANUAL OPERATION (displayed symbol )
Press
button to set the gas boiler in manual operation mode.
To temporary change the room temperature value (from COMFORT to ECONOMY or vice versa) press the
button. This
change has effect until the next button pressure.
1.9 SHOWER FUNCTION
The shower function ensures better hot water comfort, e.g. during a shower.
This function enables domestic hot water to be drawn at a lower temperature than the nominal temperature value.
To set or modify the max. shower function temperature value, refer to section "TEMPERATURE VALUES MODIFICATION BY
PRESSING THE
BUTTON".
This function can be manually activated in the following way:
• Press one of the two buttons +/- ( ) and then the button
to activate the function (the message SHOWR briefly appears on
the display, followed by the message HW SS);
flash on the display;
• press the OK button while the flow temperature and the symbol
flashes). At the end of this time the domestic hot
• the duration of the function is 60 minutes (during this time the symbol
water temperature returns to the value of the previously set operating mode (the symbol
is no longer intermittent on the
display).
Note: To disable the function before the end of the 60 minutes, proceed as follows:
;
• press one of the two buttons +/- ( ) and then the button
• press the OK button, the display shows the message "HW S^". 9
7689490.01 (1-09/17)
USER Section (en)
1.10 TEMPERATURE VALUES MODIFICATION BY PRESSING THE
BUTTON
To modify the room temperature values, proceed as follows:
• press the IP button to enable the PROGR function;
button to select the required function as described in the following table:
• press the
Function
COMFR
ECONM
NOFRS
SHOWR
Display
The set temperature value flashes
(factory setting = 20°C)
The set temperature value flashes
(factory setting = 18°C)
The set temperature value flashes
(factory setting = 5 °C)
The set temperature value flashes
(factory setting = 40°C)
Description of function
Boiler operation in heating mode at nominal temperature.
Boiler operation in heating mode at reduced temperature.
Boiler operation in heating mode at room frost protection
temperature.
Boiler operation in DHW mode at DHW temperature set.
• Press the +/- button to modify the value of the selected function;
• press the IP button to exit the function.
1.11 PROGRAMMABLE SWITCHING TIME FUNCTION (BUTTON
)
USER Section (en)
1.11.1 HOLIDAY PROGRAM function
It is possible to temporary shut off the timing program (section "PROGRAMMING HEATING MODE OPERATION TIMES") for a
certain period of time. During this period of time a minimum room temperature value is guaranteed (default value 5°C). To modify
this temperature value see section "TEMPERATURE VALUES MODIFICATION BY PRESSING THE
BUTTON" under the
entry “NOFRS”.
To enable the function proceed as follows:
button to set the function to “AUTO” (symbol
);
• press the
button, the display shows the writing MM 60 and the symbols flashing.
• press the
In this example the function has a period of 60 minutes.
Press the +/- buttons to set the period of the timing program with 10 minutes step. The period of time is settable from a
minimum of 10 minutes to a maximum of 45 days.
By pressing the +
button after 90 minutes, the display shows HH 02:
in this case the period of time is carries out in hours from a minimum of 2 hours to a maximum of 47 hours, with 1 hour step.
By pressing the +
button after 47 hours, the display shows DD 02:
in this case the period of time is carried out in days from a minimum of 2 days to a maximum of 45 days, with 1 day step. Do not press any button after having enabled this function. By pressing some of the remote control buttons, it is possible
that the manual function is enabled by mistake (in this case the display shows the
and that causes the “Holiday Program”
function shut off . In this case it is necessary to repeat the instructions described at the beginning of this section to enable
again the function.
1.11.2 PARTY function
This function allows the user to set a temporary room temperature value. The operating mode returns to a previews setting at the
end of this period of time.
To enable the function, proceed as follows:
• press the
button to set the function to "MANUAL" (symbol );
button, the display shows the writing MM 60 and the
flashing;
• press the
• to set the period of the timing program see the section "HOLIDAY PROGRAM function".
buttons.
• to modify the room temperature value, press the OK button (the display shows "AMB") then press the +/ 2.
PROLONGED SHUTDOWN. ANTI-FREEZE PROTECTION
Do not drain the whole system as filling up with water again could cause unnecessary and harmful scale to build up inside the
boiler and the heating elements. If the boiler is not used during winter and is therefore exposed to the danger of frost, add some
specific anti-freeze to the water in the system (e.g.: propylene glycol coupled with corrosion and scale inhibitors). The electronic
boiler management system includes a “frost protection” function for the heating system which, when delivery temperature falls
below 5°C, lights the burner until a delivery temperature of 30°C is reached.
The function is operative if: the boiler is electrically powered, there is gas, system pressure is normal and the boiler is not
blocked.
7689490.01 (1-09/17)
10
3.
GAS CONVERSION
The boilers can operate both on natural gas (G20) and LPG (G31). All gas conversions must be made by the AUTHORISED
TECHNICAL SERVICE CENTRE. 4.TROUBLESHOOTING
If a fault occurs, the display shows the
symbols flashing together with the <ERROR> writing.
The fault is identified by an error code followed by E letter and is not resettable.
Call an authorized Service Centre.
Description of fault
Action
09
Gas valve connection error
Call the Authorised Service Centre.
10
External probe sensor faulty
Call the Authorised Service Centre.
12
Hydraulic differential pressure switch switching failure
Call the Authorised Service Centre.
13
Hydraulic differential pressure switch contacts stuck
Call the Authorised Service Centre.
15
Gas valve control error
Call the Authorised Service Centre.
18
Hydraulic circuit automatic filling in progress
Wait for the end of the filling cycle
19
Fault in system filling phase
Press and hold down
20
NTC flow sensor faulty
Call the Authorised Service Centre.
28
NTC fumes sensor faulty
Call the Authorised Service Centre.
40
NTC return sensor faulty
Call the Authorised Service Centre.
50
NTC domestic hot water sensor faulty
(only for heating-only model with storage boiler)
Call the Authorised Service Centre.
53
Fumes outlet obstructed
Disconnect the boiler from the mains power supply for a few
seconds. If the fault persists, call the authorised technical
service centre
55
Electronic board not calibrated
Call the Authorised Service Centre.
Communication problem between boiler board and control
unit. Probable short circuit on wiring.
Call the Authorised Service Centre.
Fumes fault during calibration (probable fumes
recirculation)
Call the Authorised Service Centre.
109
Air in boiler circuit
(temporary fault)
Call the Authorised Service Centre.
110
Safety thermostat tripped due to overtemperature (pump
probably blocked or air in heating circuit).
Press and hold down
117
Pressure in hydraulic circuit too high (> 2,7 bar)
Call the Authorised Service Centre.
118
Pressure in hydraulic circuit too low
Check that the pressure in the system is correct; See the
FILLING THE SYSTEM section.
125
No circulation safety trip
(control performed via a temperature sensor)
Press and hold down
for at least 2 seconds.
128
No flame
Press and hold down
for at least 2 seconds.
129
Loss of flame at ignition
Call the Authorised Service Centre.
130
Fumes NTC tripped due to overtemperature
Press and hold down
for at least 2 seconds.
133
Ignition failure (5 attempts)
Press and hold down
for at least 2 seconds.
134
Gas valve blocked
Press and hold down
for at least 2 seconds.
135
Internal board error
Press and hold down
for at least 2 seconds.
154
Delivery/return probe control test
Call the Authorised Service Centre.
160
Fan fault
Call the Authorised Service Centre.
178
Intervention of safety thermostat for excess temperature in
low temperature system
Call the Authorised Service Centre.
270
Overheating exchanger
Call the Authorised Service Centre.
92
for at least 2 seconds.
317
162
Call the Authorised Service Centre.
Call the Authorised Service Centre.
321
163
Call the Authorised Service Centre.
Call the Authorised Service Centre.
384
164
Parasite flame (internal error)
Press and hold down
Input voltage too low
Automatic reset at voltages in excess of 175V. If this fault
persists, call the Authorised Service Centre.
Exchanger sensor faulty
Call the Authorised Service Centre.
385
165
431
11
for at least 2 seconds.
7689490.01 (1-09/17)
USER Section (en)
83…87
for at least 2 seconds.
5 reset attempts can be performed after which the boiler shuts down. Wait 15 minutes before attempting to reset the boiler
again.
5.
SWITCHING OFF THE BOILER
To turn off the boiler, disconnect the electric power supply using the two-pole switch. In the “Off” operating mode off but the electrical circuits remain powered and the anti-freeze function remains active.
the boiler stays
6.
FILLING THE SYSTEM
The device has an automatic filling system. For further information, refer to the section FILLING THE SYSTEM in "INSTALLER
section".
If pressure drops occur frequently, have the boiler checked by the AUTHORISED TECHNICAL SERVICE CENTRE.
7.
ROUTINE MAINTENANCE INSTRUCTIONS
USER Section (en)
To keep the boiler efficient and safe, have it checked by the Authorised Service Centre at the end of every operating period.
Careful servicing ensures economical operation of the system.
7689490.01 (1-09/17)
12
INSTRUCTIONS PRIOR TO INSTALLATION
The following notes and instructions are addressed to fitters to allow them to carry out trouble-free installation. Instructions for
lighting and using the boiler are contained in the ‘Instructions for Users’ section. Installation, servicing and running of domestic
gas-fired systems must be performed by qualified technicians, in compliance with current regulations. Additionally, bear in mind the following: • When installing the unit in environments with temperatures lower than 0°C, take the necessary precautions to avoid the
formation of ice in the siphon and in the condensation drain.
• This boiler can be connected to any type of double- or single-pipe convector plate, radiator or thermoconvector. Design the
system sections as usual, though, bearing in mind the available flow-head at the plate, as shown in section 16.
• Do not leave any packaging (plastic bags, polystyrene, etc.) within the reach of children as they are a potential source of
danger.
• Initial lighting of the boiler must be carried out by an authorised Service Engineer, as indicated on the attached sheet.
Failure to observe the above will render the guarantee null and void.
Do not leave any packaging (plastic bags, polystyrene, etc.) within the reach of children as they are a potential source of danger.
8.
INSTALLING THE BOILER
The boiler can be installed in the following ways:
1. Recessed installation outdoors.
2. Wall-mounted installation outdoors in partially sheltered areas.
3. Wall-mounted open air installation outdoors.
CONTENTS OF PACK
• Template (see figure in annex "SECTION" C at the end of this manual) • Boiler supporting bar for installation in box
• Boiler supporting bar for wall-mounted installation
• 8 mm expansion plugs and pressure screws Fit two G3/4 taps (flow and return) on the central heating circuit; these taps make it possible to carry out important operations on
the system without draining it completely. If you are either installing the boiler on an existing system or replacing one, as well as
the above, fit a settling tank under the boiler on the system return line in order to collect any deposits and scale circulating in the
system after flushing.
Do not lift the boiler exerting pressure on the plastic parts like the siphon and the flue turret.
Tighten
the boiler water connections with care (maximum tightening torque 30 Nm).
Before
starting up the boiler, fill the water siphon to prevent the fumes from diffusing in the room.
DIMENSIONS OF THE BOILER AND BOX
The dimensions of the boiler and box and the relative installation positions of the water connections are shown in the annex
"SECTION" C at the end of the manual.
Condensate drain point
GAS inlet (G3/4”)
Safety valve drain point
Cold domestic water inlet / System filling tap (G1/2”)
Heating system flow (G3/4”)
Heating system return (G3/4”)
DHW flow (G1/2”) models 24 and 28 / storage boiler
(G3/4”) models 1.12 and 1.24
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7689490.01 (1-09/17)
I N S TA L L E R S e c t i o n ( e n )
ADDITIONAL PUMP WARNING
If an additional pump is used on the heating system, position it on the boiler return circuit. This will allow the correct operation of
the water pressure switch. SOLAR WARNING
If the instantaneous (mixed) boiler is connected to a system with solar panels, the maximum temperature of the domestic hot water
entering the boiler must not exceed 60°C. 8.1 RECESSED INSTALLATION OUTDOORS
The appliance must be installed inside the template box which is supplied as an accessory in a separate package. The template
box must be fitted into the wall in a niche created for the purpose and blocked with special rag bolts at the sides.
The useful internal depth of the template box must be a uniform 240 mm to ensure proper installation of the boiler. If it is not,
use
the spacing frame kit available as an accessory.
I N S TA L L E R S e c t i o n ( e n )
Connect the system to the gas and water inlets on the lower bar of the template box.
After completing all masonry work, mount the boiler supporting bar on the fittings in the template box. Insert the 6 self-tapping
screws supplied with the boiler in the holes of the bar to fix the latter in place. Mount the boiler on the bar at the point of the upper
holes (detail A in the figure) and make the hydraulic connections with the hoses (available as an accessory). A
b
The safety valve MUST be connected to a drain trap at the point of the hole " " at the base of the template box to prevent this
valve from leaking.
Connect the condensate drain trap to a sump at the point of the hole "
" at the bottom of the template box making sure that it
is on a continuous slope.
Avoid horizontal stretches.
After fixing the boiler, connect the flue and air ducts, supplied as accessories, as described in the following sections.
8.2 WALL-MOUNTED INSTALLATION OUTDOORS IN PARTIALLY SHELTERED
AREAS
This boiler may be installed outdoor in a partially protected location. A partially protected location is a location where the boiler is
not directly exposed to weather conditions (rain, snow, hailstorm, etc.).
After deciding the exact location of the boiler, fix the template to the wall. Connect the system to the gas and water inlets present
on the lower bar of the template. Make sure the rear part of the boiler (back) is as parallel as possible to the wall (otherwise, shim
the lower part). After fixing the boiler to the template, connect the flue and air ducts, supplied as accessories, as described in the
following sections. Connect the siphon to a drain trap, making sure the slope is continuous. Avoid horizontal stretches.
7689490.01 (1-09/17)
14
8.3 WALL-MOUNTED OPEN AIR INSTALLATION OUTDOORS
This boiler can be installed in the open air outdoors with the shelter kit supplied as an accessory.
After deciding the exact location of the boiler, fix the template to the wall. Connect the system to the gas and water inlets present
on the lower bar of the template. Make sure the rear part of the boiler (back) is as parallel as possible to the wall (otherwise, shim
the lower part).
After mounting the boiler on the wall, install the shelter kit following the procedure in the figure. Connect the flue and air ducts,
supplied as accessories, as described in the following sections.
1
O 5
2
O 5
766012101
9.
FILLING THE SYSTEM
The initial filling procedure and resetting the pressure of the system depend on the model of the boiler: 24 -28 MODELS
INITIAL FILLING PHASE
For initial filling of the system, proceed as follows:
• remove the front panel of the boiler;
• check that the automatic air vent valve in the body of the valve of the pump is
open;
• fill the system at the tap in the hydraulic unit (detail "A" in the figure to the side);
• vent all the heating elements concerned;
• check that the pressure displayed on the pressure gauge (detail "B" in the figure
to the side) is 0.8 - 1.5 bar, with the system cold. In case of overpressure, open
the boiler drain valve;
• Close the system filling tap.
bis
SYSTEM PRESSURE RESETTING PHASE
The pressure of the system is automatically reset whenever it drops below ~ 0.8 bar.
The pressure switch requires the filling of water. The text Err 18 is shown on the display of the Room Unit during the filling phase.
The cycle runs for a maximum of ~ 6 minutes. The text Err 19 is shown on the display of the Room Unit if the pressure is not reset
at the end of the filling cycle. The boiler begins a new filling cycle when the fault is reset.
If the fault is caused by blocking of the filling electrovalve, it is possible to proceed manually with the system filling tap.
1.12 -1.24 MODELS
INITIAL FILLING PHASE
For initial filling of the system, proceed as follows:
• remove the front panel of the boiler;
• check that the automatic air vent valve in the body of the valve of the pump is open;
• check that the filling tap in the boiler is always open. Fill the system by turning the screw on the body of the electrovalve
(turn to position "A");
• vent all the heating elements concerned;
• Check that the pressure displayed on the pressure gauge is 0.8 -1.5 bar, with the boiler cold. In case of overpressure, open
the boiler drain valve;
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7689490.01 (1-09/17)
I N S TA L L E R S e c t i o n ( e n )
3
• after filling, turn the screw back to position "C".
SYSTEM PRESSURE RESETTING PHASE
The pressure of the system is automatically reset whenever it drops below ~ 0.8 bar.
The pressure switch requires the filling of water. The text Err 18 is shown on the display of the Room Unit during the filling phase.
The cycle runs for a maximum of ~ 6 minutes. The text Err 19 is shown on the display of the Room Unit if the pressure is not reset
at the end of the filling cycle. The boiler begins a new filling cycle when the fault is reset.
If the fault is caused by blocking of the filling electrovalve, it is possible to proceed manually with the system filling tap.
For the models 24 - 28, the filling tap in the boiler (see SECTION G) must always remain closed. For models 1.12 - 1.24, the automatic filling electrovalve is located under the circulator. Make sure to protect the electrovalve
against contact with water when opening the central screw of the circulator to release it or to check circulation.
The boiler is fitted with a hydraulic pressure gauge which prevents the boiler from working if there is no water.
The internal function of the electronic board of the appliance (see the section SYSTEM GAS EXTRACTION FUNCTION) is
used to facilitate the elimination of the air inside the heating circuit when the boiler is first installed or after maintenance
when the water is drained from the primary circuit.
Take special care when filling the heating system. In particular, open any thermostat valves in the system, ensure the water
enters slowly in order to prevent the formation of air inside the primary circuit until operating pressure is reached. Lastly,
vent any radiators in the system. BAXI declines all liability for damage deriving from the presence of air bubbles in the
primary exchanger due to the incorrect or imprecise observance of the above.
10. INSTALLING THE DUCTS
The boiler is easy and flexible to install thanks to the extensive range of available accessories, as described below. The boiler
has been designed for connection to a vertical or horizontal coaxial flue-air duct. The boiler can also be used with separate ducts
using the accessory splitting kit.
WARNINGS
C13, C33 The terminals for separate flues must be fitted inside a 50 cm square. Detailed
instructions are provided with the individual accessories.
C53 Do not fit the flue and air duct terminals on opposite walls of the building.
C63 The pressure drop of the ducts must not exceed 100 Pa. The ducts must be certified for
this specific use and for a temperature in excess of 100°C. The flue terminal must be certified
to EN 1856-1.
C43, C83 The flue terminal or flue duct must be suitable for the purpose.
For
optimal installation, the accessories supplied by the manufacturer should be used.
To optimise operating safety, make sure the flue ducts are firmly fixed to the wall with
suitable brackets. The brackets must be positioned over the joints at a distance of
approximately 1 metre from one another.
7689490.01 (1-09/17)
16
I N S TA L L E R S e c t i o n ( e n )
10.1 CONCENTRIC DUCTS
This type of duct is used to discharge exhaust fumes and draw combustion
air both outside the building and if a LAS flue is fitted. The 90° coaxial bend
allows the boiler to be connected to a flue-air duct in any direction as it can
be rotated by 360° It can also be used as a supplementary curve combined
with a coaxial duct or a 45° curve.
If fumes are discharged outside the building, the flue-air duct must protrude
at least 18 mm from the wall to allow an aluminium weathering surround to
be fitted and sealed to avoid water infiltrations.
• A 90° bend reduces the total duct length by 1 metre.
• A 45° bend reduces the total duct length by 0.5 metres.
• The first 90° bend is not included when calculating the maximum available length. CG_2549
Fasten the suction pipes using two galvanised Ø 4,2 mm self tapping screws with minimum length 19 mm. If not
included with the supply, screws with the same characteristics must be sourced on the market separately.
Before securing the screws, make sure that at least 45 mm of the pipe is inserted into the gasket (see the figures in annex
"SECTION"
D at the end of this manual).
SOME OUTLET DUCT INSTALLATION EXAMPLES AND THEIR RELATIVE MAXIMUM LENGTHS ARE SHOWN IN ANNEX
"SECTION"
D AT THE END OF THIS MANUAL.
10.2 SEPARATE DUCTS
This type of installation makes it possible to discharge exhaust fumes both
outside the building and into single flue ducts. Comburent air can be drawn
in at a different location from that of the flue terminal. The accessory splitting
kit comprises a flue duct adaptor (80) (B) and an air duct adaptor (A). For the
air duct adaptor, fit the screws and seals previously removed from the cap. The 90° bend is used to connect the boiler to the inlet and outlet ducts, adapting
them to various requirements. It can also be used as a supplementary curve
combined with a duct or a 45° bend.
B
A
• A 90° bend reduces the total duct length by 0.5 metres.
• A 45° bend reduces the total duct length by 0.25 metres.
• The first 90° bend is not included when calculating the maximum available length. CG_2549
Make
sure there is a minimum downward slope of 5 cm per metre of duct towards the boiler.
SOME OUTLET DUCT INSTALLATION EXAMPLES AND THEIR RELATIVE MAXIMUM LENGTHS ARE SHOWN IN ANNEX
"SECTION"
D AT THE END OF THIS MANUAL.
SEPARATE DUCTS (TYPE B23)
For B23 type discharge, the comburent air is drawn out of the room where
the boiler is installed. The accessories for separate 80 mm ducts are required
for the discharge of fumes. This type of installation makes it possible to
discharge exhaust fumes both outside the building and into single flue ducts.
The accessory splitting kit comprises an 80 mm flue duct adaptor (B) and
an air duct adaptor (A). For the air duct adaptor, fit the screws and seals
previously removed from the cap. B
THE
MAXIMUM LENGTH OF THE FLUE DUCT IS 25 m.
A
CG_2549
SEPARATE DUCTS WITH SHELTER KIT (TYPE B23)
For B23 type discharge, the comburent air is drawn out of the
room where the boiler is installed. The 60/80 mm flue duct
adaptor and the 80 mm flue ducts supplied as accessories
are required for the discharge of fumes.
THE
MAXIMUM LENGTH OF THE FLUE DUCT IS 25 m.
7660859
17
7689490.01 (1-09/17)
I N S TA L L E R S e c t i o n ( e n )
Make
sure there is a minimum downward slope of 5 cm per metre of duct towards the boiler.
11. ELECTRICAL CONNECTIONS
This machine is only electrically safe if it is correctly connected to an efficient earth system in compliance with current safety
regulations. Connect the boiler to a 230V single-phase earthed power supply using the supplied three-pin cable, observing correct
Live-Neutral polarity.
Use a double-pole switch with a contact separation of at least 3 mm. When replacing the power supply cable, fit a harmonised “HAR H05 VV-F” 3x0,75 mm2 cable with a maximum diameter of 8 mm. To access the terminal block, remove the front boiler panel (fixed with two screws at the bottom), turn the control box downwards
and access terminal blocks, used for the electrical connections, after removing the protective cover. The 2 A fast-blowing fuses are
incorporated in the power supply terminal block (to check and/or replace the fuse, pull out the black fuse carrier). SEE
WIRING DIAGRAM IN ANNEX "SECTION" B AT THE END OF THIS MANUAL. Make sure that the overall rated power input of the accessories connected to the appliance is less than 2A. If it is higher, install
a relay between the accessories and the electronic board.
The connections in terminal block M1 are high voltage (230 V). Before making connections, make sure the appliance is
disconnected from the power supply. Respect the input polarity on terminal block M1: L (LINE) - N (NEUTRAL).
I N S TA L L E R S e c t i o n ( e n )
ACCESS TO THE BOILER CONTROL BOX
Access the boiler control box following this procedure (see figure below):
• power off the boiler;
• remove the front panel of the template box, when applicable, and of the boiler (secured with 2 screws);
• slide the control box carefully away from the side of the boiler;
• put the control box in place;
• when done, put the control box back in its original place.
CG_2484
TERMINAL BLOCK M1
(L) = Live (brown)
(N) = Neutral (light blue).
= Earth (yellow-green).
(1) (2) = contact for Room Thermostat.
Put back the jumper on terminals 1-2 of boiler terminal
block M1 if the room thermostat is not used or if the
modulating Room Unit supplied with the boiler is not
connected. TERMINAL BLOCK M2
Terminals 1 - 2: Room Unit connection (low voltage).
Terminals 4 - 5: External Sensor connection (supplied as an
accessory).
Terminals 6 - 8: not used.
Terminal 7: ----.
Terminals 9 - 10: DHW storage boiler sensor connection (only
for mono-thermal boilers 1.12-1.24).
RELAY INTERFACE TERMINAL BLOCK (S.R.)
Terminals 1 (common) - 2 (closed) - 3 (open): potential-free contacts, and for configuration of these see parameter P04
described in the section "SETTING PARAMETERS".
Terminals 5 (common) - 6 (closed) - 7 (open): contacts 5 and 7 used to control the automatic system filling valve. If the appliance is connected to an underfloor system, install a limit thermostat to prevent the latter from overheating.
Use the relative cable grommets at the bottom of the boiler to thread the cables through to the terminal blocks.
7689490.01 (1-09/17)
18
11.1 INSTALLING THE REMOTE CONTROL ON THE WALL
1
2
3
M2
4
5
6
7
8
9
10
B
C
A
CG_2586
The Room Unit controls the boiler with the exception of the Flue Cleaner Function, the Initial Start-up Function and the
Combustion Adjustment Function. The Boiler Information menu is not available on the Room Unit.
If the error code "E83" is displayed there is a communication fault between the main board and the Control Unit. Probable
short circuit on wiring. Avoid placing cables near sources of heat, high voltage and magnetic fields.
11.1.1 INSTALLER FUNCTIONS
To access the Information and Advanced Setting mode, it is necessary to press, for at least 3 seconds, the IP button;
in INFO mode the display shows "INFO".
To escape the INFO mode briefly press the IP button.
In this mode press the OK button to scroll the windows; to set parameters press the +/button. Communications between the main board and the remote control is not immediately. In some case it may happen that the
command given through the remote control takes some time depending on the type of the transferred information.
CENTRAL HEATING (CH)
• "CH SL" Max. heating circuit setpoint, value settable with the buttons +/. WARNING: to change the unit of measure from
°C to °F and vice versa, press the
button.
• "EXT°c" Outside temperature (with external sensor connected).
• "CH O>" Maximum Heating flow temperature.
• "CH R<" Return heating temperature (unplanned).
• "CH S^" CH temperature setpoint.
• "CH MX" Maximum CH temperature setpoint.
• "CH MN" Minimum CH temperature setpoint.
DOMESTIC HOT WATER (DHW)
• "HW O>" D.H.W. flow temperature.
buttons to set the value.
• "HW S^" Maximum setpoint temperature value setting. Press the +/- • "HW MX" Maximum D.H.W. temperature setpoint.
• "HW MN" Minimum D.H.W. temperature setpoint.
ADVANCED INFORMATION
• "PWR %" Power level/modulating flame (%).
• "P BAR" Water pressure heating circuit (bar).
• "F L/M" Water flow rate (l/min).
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7689490.01 (1-09/17)
I N S TA L L E R S e c t i o n ( e n )
Before mounting the accessory, consult the Room Unit manual.
Proceed as follows:
• Disconnect the boiler from the mains power supply.
• Remove the jumper from the ends of the contacts 1-2 of the
terminal block M1.
• Open the Remote Control, separating the base B from the front
panel A.
• Pass the two wires from the boiler terminal block M2 through the
hole in the base B to apply to the wall.
• Connect wires 1-2 (non-polarised) of the boiler terminal block M2
to the ends of the terminal of the base B.
• Fix the base B to the wall using the expansion plugs and screws
supplied with the accessory.
• Apply the front panel A to the base fixed to the wall, taking care
not to apply excessive force.
• Power the boiler making sure that the Remote Control lights
up.
I N S TA L L E R S e c t i o n ( e n )
PARAMETERS SETTING
• "K REG" Central Heating setting constant (0,5...9,0 - factory setting = 3 - Refer to annex SECTION E). Press +/. buttons
to set the value. An high value setting involves a high flow temperature. To set a correct value of the Central Heating constant
"K REG", involves the room temperature to match the CH setpoint with external temperature changes over.
• "BUILD" A parameter that takes into account the degree of building insulation (1..10 - factory setting = 5). When the outside
temperature varies, the room temperature changes at different rates, depending on the building thermal storage capacity.
An high value setting involves a heavy building structures (the room temperature will respond slower to outside temperature
variations; buildings with thick walls or with external insulation). A low value setting involves a light building structures (the room
. buttons to
temperature will respond quicker to outside temperature variations; buildings with a light envelope). Press +/set the value.
• "YSELF" CH flow temperature auto setting function Enabled=1/Disabled=0 (factory setting = 1). With function enable, the
constant "K REG" is modified to match the room temperature comfort. This function operates with the external sensor
buttons to set the value.
connected. Press +/ • "AMBON" Room temperature influence Enabled/Disabled (1/0). Factory setting 1. In this case, the rooms temperature
buttons to set the value. Note: Refer to the
regulation it depends on the flow temperature set ("CH SL"). Press +/summary table of possible AMBON and MODUL combinations.
• "T ADJ" Reading correction of the remote control Room Sensor (factory setting 0.0°C). It allows correction of the Room Sensor
. The
reading by a value ranging from -3.0°C to 3.0°C, with a resolution of 0.1°C. The value may be set using the buttons +/function is enabled only if the unit of measurement is °C.
• "MODUL" Enable/disable Modulation of flow temperature depending on the room temperature and external temperature value
(with external sensor connected). (with Room Sensor enabled). A value equal to 1 indicates enabling of delivery setpoint
. Note: Refer to
modulation; a value equal to 0 indicates disabling. The above value can be modified with the buttons +/the summary table of possible AMBON and MODUL combinations.
Combination table between AMBON and MODUL functions.
AMBON
MODUL
1
1
0
1
0
1
0
0
BUTTONS FUNCTION +/Room temperature adjustment (modulating flow temperature)
With external sensor
: KREG curve adjustment
Without external sensor : Calculated flow temperature adjustment
(It is advisable to set MODUL = 0)
Flow temperature adjustment
Room temperature adjustment (fixed flow temperature)
• "HW PR": Enabling the DHW programmer (only for boilers connected to an external hot water tank). Factory setting 1.
0: Disabled.
1: Always enabled.
2: Enabled with DHW weekly program ("HW PR" refer to section "PROGRAMMING DHW MODE OPERATION TIMES").
• "NOFR": Frost protection Enabled/Disabled (1/0). Factory setting 1. This value must be always enable (1).
• "COOL": Summer temperature control Enable/Disable (factory set = 0). By setting this parameter = 1 the function is enabled
and a new boiler operation mode “SUMMER+COOL” is available. This function is added to the ones described on section
(Summer - Winter - Heating only - Off)": SUMMER - WINTER - SUMMER+COOL - HEATING
"DESCRIPTION OF BUTTON
ONLY - OFF. To enable the function, presss the
button until the display shows the
symbol on the right side of the hour.
The aim of this function is to enable the remote control to adjust the room temperature in summertime by controlling one or
more external cooling devices such as a condition machine. In this way, the boiler relay card enables the external condition
system when the room temperature is higher than the remote control temperature set value. When the function operates, the
display shows the symbol flashing. See the following figure and refers to the SERVICE instruction manual.
11.2 CONNECTING TO A ZONE SYSTEM
KEY TO ELECTRICAL CONNECTIONS (see diagram A in annex "SECTION" F at the end of this manual). Z
R
Zone (1..n)
Relay
EV
RT
Zone electrovalve
Room thermostat
The boiler can manage a zone heating system. The Room Unit (wall-mounted) can be used to control one zone while normal
ambient thermostats can be used to control the other zones.
SYSTEM CONNECTIONS
• Connect the zone 1 valve/pump to terminals 1 - 3 of the relay board terminal block inside the boiler control box.
• Connect the Ambient Thermostat contact of the other zones to terminals 1-2 of terminal block M1 (CONNECTING THE
AMBIENT THERMOSTAT section).
Check that parameter P04=02. Set parameter P10 (SETTING PARAMETERS section).
7689490.01 (1-09/17)
20
11.3 CONNECTING THE ROOM THERMOSTAT
The connections in terminal block M1 are high voltage (230 V). Before making connections, make sure the appliance is
disconnected from the power supply. Respect polarity L (LIVE) - N (NEUTRAL).
To connect the Room Thermostat to the boiler, proceed as described below:
•
•
•
•
switch off the boiler;
access the terminal block M1;
remove the jumper from the ends of contacts 1-2 and connect the wires of the Room Thermostat;
switch on the boiler and make sure the Room Thermostat works correctly.
11.4 ACCESSORIES NOT INCLUDED IN THE SUPPLY
11.4.1 EXTERNAL SENSOR
Connect the wires of the external probe to the
terminals 4-5 of terminal block M2 as shown in
the figure to the side and following the instructions
provided with the same probe.
• CONNECTION OF THE ROOM THERMOSTAT AND REMOTE CONTROL
If both the devices, the Room Thermostat and the Remote Control, are connected to the boiler, adjustment of the heating flow
temperature depends on the curve set for each device as described above. 1) SETTING THE "Kt" CLIMATE CURVE WITH ROOM THERMOSTAT (TA) AT THE BOILER CONTROL PANEL
When the external sensor is connected to the boiler, the electronic board adjusts the flow temperature calculated according to the
set Kt coefficient. Select the required curve by pressing
as indicated in the chart in annex SECTION E for selecting the
most appropriate one (00 to 90).
IMPORTANT: the kt curve can be adjusted at the boiler control panel only when the Remote Control is disconnected from the
boiler. KEY TO CHART - “SECTION” E
Flow temp
Outside temp
2) SETTING THE "K REG" CLIMATE CURVE AT THE REMOTE CONTROL
See section: "INSTALLER FUNCTIONS" - "PARAMETERS SETTING" - "K REG".
Connect the External Probe to the boiler in order to visualise the external temperature, expressed in °C, on the Room Unit display.
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When the external probe is connected, adjustment
of the heating flow temperature depends on the
devices that interface with the boiler, as described
below:
• CONNECTION OF THE ROOM THERMOSTAT
WITHOUT REMOTE CONTROL
on
The Kt curve is set manually at the keys
the control panel of the boiler.
• CONNECTION OF THE REMOTE CONTROL
WITHOUT ROOM THERMOSTAT
When the Remote Control is installed (section "INSTALLING THE REMOTE CONTROL ON THE WALL"), adjustment of the
heating flow temperature depends on the K REG curve, the “KORR” coefficient (influencing the room temperature) and the
.
temperature (TAMB) set manually at the keys 11.4.2 EXTERNAL STORAGE BOILER
Only for models 1.12 - 1.24.
The boiler can be electrically connected to an external storage boiler. A diagram of the hydraulic connection of the external storage
boiler is shown in figure B of annex "SECTION" F. Connect the DHW priority sensor NTC to terminals 9-10 on terminal block M2.
The sensitive element of the NTC sensor must be inserted in the special well located on the storage boiler. Make sure that the
exchange capacity of the storage boiler coil is appropriate for the power of the boiler. Adjust DHW temperature (+35°C...+60°C)
by pressing
.
IMPORTANT: set parameter P03 = 05 as described in section "PARAMETERS SETTING". KEY TO STORAGE BOILER CONNECTIONS (see diagram "A" in annex "SECTION" F at the end of this manual).
A
B
C
D
Heating Unit
Powered 3-way valve
Heating water flow
Storage boiler water flow
E
F
G
Heating water / Storage boiler return
Storage boiler unit
DHW priority probe
I N S TA L L E R S e c t i o n ( e n )
The anti-legionellosis function is NOT enabled. To enable it, set parameter P21 = 55...67 °C as described in the "SETTING
PARAMETERS"
section. 12. SPECIAL FUNCTIONS
These functions can be enabled on the boiler control panel in the control box. To access the boiler control panel, refer to the
chapter
"ELECTRICAL CONNECTIONS-ACCESS TO THE BOILER CONTROL BOX".
When the symbols
flash on the display, one of the following functions is active: INITIAL START-UP, FLUE CLEANER
FUNCTION or COMBUSTION ADJUSTMENT FUNCTION.
12.1 INITIAL IGNITION
When lighting the boiler for the first time perform the following procedure. After electrically powering the boiler the code "000"
appears on the display. This means the appliance is ready for the "initial lighting" procedure.
• Press
together and hold down for 6 seconds. "On" appears on the display for 2 seconds followed by code "312"
indicating that the "system venting" function is active. This function lasts 10 minutes.
• Afterwards, the boiler switches on, the display shows the code "000" alternating with the % of ignition power and the temperature
value (°C). During this "gas recognition function" phase, that lasts approximately 7 minutes, the type of gas used is analysed.
During this function, assure maximum heat exchange to the heating or DHW system (domestic hot water demand) in order to
prevent the boiler from switching off due to overheating.
• If the boiler runs on natural gas, the display shows NG for approximately 10 seconds. The boiler is now ready for normal
and
together and hold down for at least 4 seconds to exit without changing
operation. If the display shows LPG, press
the factory setting.
for at least 6 seconds to confirm the gas effectively used. If
• If the boiler runs on propane the display shows LPG. Press
the display shows NG and does not recognise the type of gas used, press
and
together and hold down for at least 4
seconds to exit the function and then change parameter P02=01 as described in the “PARAMETER SETTINGS” section of the
boiler instructions manual. If the venting or gas recognition function is interrupted by a power blackout, start the function again when power is restored
by pressing
and
together and holding them down for at least 6 seconds. If the display shows fault E118 (low pressure
in hydraulic circuit) during the venting function, open the filling tap on the appliance and restore the correct pressure. If the
gas recognition function is interrupted due to a fault (e.g.: E133 no gas) press
to reset and then press
and
(for at least
6 seconds) to restart the function again. If the gas recognition function is interrupted due to overheating, restart the function by
pressing
and
and holding them down for at least 6 seconds.
The combustion of this appliance has been factory controlled, calibrated and set for operation with NATURAL GAS.
During the Gas Type Control Function, the combustion ratio will increase for a short period of time while the gas type is being
established.
During initial ignition, the burner may not ignite (causing the boiler to shut down) until any air in the gas pipes is vented.
In this case, repeat the ignition procedure until gas reaches the burner. To reset boiler operation, press
for at least 2
seconds.
For the first few ignitions immediately after installation the system must implement a self-learning procedure to reach the
correct ignition level.
12.2 SYSTEM GAS EXTRACTION FUNCTION
This function is used to facilitate the elimination of the air inside the heating circuit when the boiler is first installed or after
maintenance when the water is drained from the primary circuit.
To enable the system gas extraction function press buttons together for 6 seconds. When the function is active, On
appears on the display for a few seconds, followed by programme row 312.
The electronic board will activate a pump on/off cycle lasting 10 minutes. The function will automatically stop at the end of the
cycle. To manually exit this function, press the above buttons together for 6 seconds once again.
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12.3 CHIMNEY SWEEPER
This function enables the boiler to generate maximum heating power. After activation, the boiler power % can be adjusted from
minimum to maximum in the DHW mode. The following procedure is used.
• Press buttons and
together for at least 6 seconds. When the function is enabled, the displays shows “On” for a few
seconds followed by programme row “303” alternated with the % of boiler power.
to gradually adjust power (sensitivity 1%).
• Press • To exit press both buttons together for at least 6 seconds, as described in point one.
Press
to display the instantaneous flow temperature for 15 seconds.
12.4 COMBUSTION TEST (CO2)
For correct boiler operation, the content of (CO2- O2) in the combustion fumes must observe the tolerances indicated in the
following table. If the value of (CO2- O2) is different, check the electrodes and their relative distances. If necessary, replace the
electrodes and position them correctly. If the problem persists, use the following function.
G20
G31
Maximum
power
Ignition
power
Minimum
power
1.12
1.24 - 24 - 28
CO2 %
O2 %
CO2 %
O2 %
CO2 %
O2 %
Nominal value
8,7
5,4
10,5
5,2
10,0
6,0
Permitted value
8,2 - 9,3
6,3 - 4,3
10,0 – 11,0
6,0 - 4,5
9,5 - 10,5
6,8 - 5,2
Nominal value
8,7
5,4
10,8
4,8
10,8
4,8
Permitted value
8,2 - 9,3
6,3 - 4,3
10,3 - 11,3
5,5 - 4,1
10,3 - 11,3
5,5 - 4,1
Nominal value
8,8
5,2
10,0
6,0
10,0
6,0
Permitted value
8,2 - 9,3
6,3 - 4,3
9,5 - 10,5
6,8 - 5,2
9,5 - 10,5
6,8 - 5,2
The
combustions analisys shall be done using an analyzer regularly calibrated.
During normal operation the boiler performs combustion control cycles. In this phase, CO values higher than 1000 ppm can
occur for brief periods of time.
COMBUSTION ADJUSTMENT FUNCTION (CO2%)
This function sets out to partially adjust the value of CO2%. The following procedure is used.
• Press buttons and together for at least 6 seconds. When the function is enabled, the displays shows “On” for a few
seconds followed by programme row “304” alternated with the % of boiler power.
• After the burner is lit, the boiler reverts to maximum DHW power (100). When the display shows "100" it is possible to partially
adjust the value of CO2 %;
. The display shows "00" alternating with the function number "304" ( flashes);
• press
to raise or lower the amount of CO2 (from -3 to +3).
• press
to save the new value and view the power value "100" on the display again (the boiler continues operating at
• press
maximum DHW power).
This procedure can also be used to adjust the quantity of CO2 to the ignition power and to the minimum power by pressing
after point 5 of the procedure described above.
• After saving the new value (point 5 of the procedure), press
to take the boiler to its ignition power. Wait for the value of
CO2 to stabilise and then adjust as described in point 4 of the procedure (the power value is a number <> 100 and <> 0) then
save (point 5).
again to take the boiler to minimum power. Wait for the value of CO2 to stabilise and then adjust as described in
• press
point 4 of the procedure (power value = 00);
• to exit the function, press the buttons for at least 6 seconds as described in point 1.
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I N S TA L L E R S e c t i o n ( e n )
1.12 - 1.24 - 24 - 28
13. GAS VALVE
This appliance does not require any mechanical adjustment on the valve. The system ensures electronic auto-adaptation. Gas valve key
Pi
Gas supply inlet pressure tap
Pi
I N S TA L L E R S e c t i o n ( e n )
13.1 GAS CONVERSION METHODS
Only an Authorised Technical Assistance Service can convert boiler operation from NATURAL GAS to LPG or vice-versa. To
perform calibration, set parameter P02 as described in the PARAMETER SETTINGS section. Lastly, check the combustion
parameters as described in the SPECIAL FUNCTIONS - CHECKING COMBUSTION PARAMETERS section.
When
the gas change is completed the boiler data plate must be amended to indicate the new gas data.
14. BOILER INFORMATION MENU
Set the parameters at the control panel in the boiler control box. To access this, refer to the chapter "ELECTRICAL
CONNECTIONS".
Press and hold down for at least 1 second, to display the information indicated in the table. Press
DESCRIPTION
to exit. DESCRIPTION
00
Secondary fault internal code
06
Heating return temperature (°C)
01
Heating supply temperature (°C)
07
Flue sensor temperature (°C)
02
Outdoor temperature (°C)
08
Primary exchanger temperature (°C)
03
Indirect tank DHW temperature (boiler CH only)
04
Domestic hot water temperature
(boiler with plate exchanger)
05
Water pressure in heating system (bar)
09 - 13
14
15 - 18
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24
Manufacturer information
Identification Open Therm communication
Manufacturer information
15. PARAMETERS SETTING
Set the parameters at the control panel in the boiler control box. To access this, refer to the chapter "ELECTRICAL
CONNECTIONS".
Key to BUTTONS
DHW temperature adjustment
(+ to increase the temperature and – to decrease it)
Heating water temperature adjustment
(+ to increase the temperature and – to decrease it)
Boiler operating information
Operating mode:
DHW – DHW & Heating – Heating Only
Off – Reset – Exit menu/functions
Off: heating and DHW disabled
(only boiler anti-freeze protection is active)
Burner lit
Fault preventing the burner from lighting
DHW operating mode enabled
Boiler/system water pressure low
Heating mode enabled
Technical Service Centre call-in
Programming menu
Manually resettable fault (
Boiler information menu
)
Fault in progress
Set unit of measurement (SI/US)
To programme the parameters of the boiler electronic board, proceed as follows:
• Press and
together and hold them down for 6 seconds until programme row “P01” appears on the display alternated
with the set value;
to scroll the list of parameters;
• Press
the value of the selected begins flashing, press
to change the value;
• Press
to confirm the value or press
to exit without saving.
• Press
Further information concerning the parameters listed in the following table are supplied together with the required
accessories.
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I N S TA L L E R S e c t i o n ( e n )
Key to SYMBOLS
DESCRIPTION OF PARAMETERS
1.12
1.24
P01
Manufacturer information
00
P02
Gas used
00 = METHANE - 01 = LPG
00
P03
Hydraulic system
00 = instantaneous appliance
05 = appliance with external storage boiler
08 = heating only appliance
P04
I N S TA L L E R S e c t i o n ( e n )
FACTORY SETTINGS
P05
P06
08
08
Programmable relay 1 settings (See SERVICE instructions)
00 = no associated function
01 = relay contact closed with Room Thermostat demand (230V)
02 = relay contact closed with Remote Control demand (low voltage)
03 = system fill contact
04 = boiler faulty signal contact
05 = fan contact (kitchen fan)
06-07 = not used
08 = timed contact for enabling external DHW pump
09 = timed contact for enabling external DHW circulation pump via DHW programming from
remote control
10 = relay contact closed with DWH demand active
11 - 12 - 13 = not used
Programmable relay 2 settings
NOT MODIFY (dedicated to automatic filling )
External probe input configuration
(See SERVICE Instructions)
24
28
00
00
80
86
02
03
00
P07..P09 Manufacturer information
--
Heating setpoint setting OT / RT
(Remote Control - Open Therm / Room Thermostat 230V~)
P10
00 = the temperature request is the Remote Control setpoint
01 = not used
02 = the temperature request is the Remote Control setpoint. The Room Thermostat enable
the gas boiler operates.
03 = the calculated setpoint depends on the origin of the request (PCB or Remote Control):
00
a) PCB (Ambient Thermostat): the setpoint is set by pressing the +/buttons on the
boiler control panel, after having first disconnected the Remote Control from the boiler.
b) Remote Control: the setpoint is set by modifying the “CH SL” parameter (see chapter
“ELECTRICAL CONNECTIONS - INSTALLER FUNCTIONS”)
c) Simultaneous request PCB - Remote Control the higher setpoint of the two requests is
satisfied.
P11..P12 Manufacturer information
--
P13
Max. heating output (0-100%)
P14
Max DHW output
(0-100%)
100
P15
Min. heating output (0-100%)
00
P16
Maximum CH setpoint (°C)
00 = 85°C - 01 = 45°C
00
P17
Pump overrun time in heating mode (01-240 minutes)
03
P18
Delay prior to new ignition in CH mode
(00-10 minutes) - 00=10 seconds
03
P19
Manufacturer information
07
P20
Pump overrun time in DHW mode (seconds)
30
P21
Anti-legionellosis function (°C) 00…54 = Disabled - 55…67 = Enabled
(set the desired temperature value)
00
P22
Manufacturer information
00
P23
Maximum DHW setpoint temperature (ACS)
60
P24
Manufacturer information
35
P25
No water safety device
00
100
100
P26..P31 Manufacturer information
--
P32..P41 Diagnostics (See SERVICE Instructions)
--
P67
Open Therm (OT) settings (See SERVICE Instructions)
00 = Plug & Play
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26
15.1 ADJUSTING MAXIMUM HEATING POWER
The maximum heating power of the boiler can be reduced to suit the requirements of the heating system it serves. A table showing
parameter P13 values according to the desired maximum power model is shown below for each single boiler To access and edit parameter P13 values, proceed as described in the PARAMETER SETTINGS section. Boiler model - PARAMETER P13 (%) / Heating output (kW) kW
1.12
1.24
24
28
2
0
3
10
3,5
15
0
0
4
20
2
2
0
5
30
7
7
4
6
40
12
12
8
7
50
17
17
13
8
60
22
22
17
70
27
27
21
80
32
32
25
12
100
41
41
33
14
51
51
42
16
61
61
50
18
71
71
58
20
80
80
67
22
90
75
24
100
86
I N S TA L L E R S e c t i o n ( e n )
9
10
16. TROUBLESHOOTING SERVICE FAULTS
If a fault occurs, the display shows the
symbols flashing together with the <ERROR> writing.
The fault is identified by an error code followed by E letter and is not resettable.
Call an authorized Service Centre.
FAULTS INDICATED ON THE BOILER DISPLAY
The faults shown on this display are identified with the symbol
and a number (fault code). For a
complete list of faults, see the following table.
If appears on the display of the CONTROL BOX the fault must be RESET manually.
To RESET the boiler, press and hold down
for 2 seconds. If faults are displayed frequently, call
the Authorised Service Centre.
Description of fault
Service action
09
Gas valve connection error
10
12
13
External probe sensor faulty
Check the connections between the gas valve and the
electronic board.
Check the sensor (*).
Hydraulic differential pressure switch switching failure
Check correct operation of the pressure switch and the wiring.
Hydraulic differential pressure switch contacts stuck
15
Gas valve control error
18
19
Hydraulic circuit automatic filling in progress
See the actions indicated in E12
Check the connections between the gas valve and the
electronic board. If necessary, replace the electronic board.
Wait for the end of the filling cycle.
20
NTC flow sensor faulty
28
NTC fumes sensor faulty
40
NTC return sensor faulty
NTC domestic hot water sensor faulty (only for heating-only
model with storage boiler)
50
Fault in system filling phase
27
Check the filling tap.
Check the sensor (**).
Check the continuity of the probe wiring.
Make sure the wiring has not shorted.
Check the fumes NTC probe (***).
Check the continuity of the probe wiring.
Make sure the wiring has not shorted.
See the actions indicated in E20
See the actions indicated in E20
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53
Fumes outlet obstructed
55
Electronic board not calibrated
83…87
Communication problem between boiler board and control unit.
Probable short circuit on wiring.
92
Fumes fault during calibration (probable fumes recirculation)
109
Air in boiler circuit (temporary fault)
110
Safety thermostat tripped due to overtemperature (pump
probably blocked or air in heating circuit).
117
Pressure in hydraulic circuit too high (> 2.7 bar)
118
Pressure in hydraulic circuit too low
125
No circulation safety trip.
(control performed via a temperature sensor)
128
No flame
129
Loss of flame at ignition
130
Fumes NTC tripped due to overtemperature
133
Ignition failure (5 attempts)
134
Gas valve blocked
135
154
Internal board error
160
178
Check that the drainage pipe is free from obstructions.
Switch off the electric power supply to the boiler for a few
seconds.
Activate the automatic calibration function described in the
spare parts instructions sheet.
Check the wiring between the Ambient Unit and the electronic
board or RF link.
Check for any recirculation of fumes.
Activate the automatic calibration function described in
the paragraph YEARLY MAINTENANCE – REPLACING
COMPONENTS.
Check pump operation.
Check the pump power input wiring.
Check pump operation.
Check the pump power input wiring
Check that the limit thermostat is undamaged and replace it if
necessary
Check the continuity of the limit thermostat wiring
Check that the pressure in the system is correct
See the FILLING THE SYSTEM section.
If the pressure in the CH circuit is < 0.5 bar, perform filling (see
the FILLING THE SYSTEM section).
Check the hydraulic pressure switch works correctly
See the actions indicated in E109
Check the flame sensing electrode is in good condition
and correctly positioned (see the ANNUAL SERVICING POSITIONING THE ELECTRODES section).
Check the wire is uninterrupted and makes good contact with
the flame sensing electrode and the ignition switch.
See the actions indicated in E92
Check the flame sensing electrode is in good condition
and correctly positioned (see the ANNUAL SERVICING POSITIONING THE ELECTRODES section).
Check the wire is uninterrupted and makes good contact with
the flame sensing electrode and the ignition switch.
Check for any recirculation of fumes.
Check the heat exchange level of the water-fumes exchanger:
possible insufficient circulation or presence of scale.
Check the fumes NTC probe (***).
Check that the gas valve is open and there is no air in the gas
supply circuit.
Check the gas supply pressure.
Check the wire is uninterrupted and makes good contact with
the flame sensing electrode and the ignition switch.
See the actions indicated in E92
Check correct operation of the condensate drainage.
Check the gas supply pressure.
Check the integrity and position of the sensing and ignition
electrodes and their wiring (see the ANNUAL SERVICING POSITIONING THE ELECTRODES section).
If necessary, replace the electronic board.
Replace the electronic board.
Delivery/return probe control test
See the actions indicated in E109
Check correct operation of the fan.
Fan fault
Check that the fan power supply wiring is connected to the
electronic board.
Check correct operation of the pump and the water circulation
Intervention of safety thermostat for excess temperature in low
in the low temperature system.
temperature system
Check the pump power input wiring.
Check whether the incorrect electric power supply frequency
Incorrect power supply frequency
is due to causes outside the boiler, in which case contact the
power supply company.
NTC domestic hot water sensor faulty
See the actions indicated in E20
317
162
321
384
163
164 Parasite flame (internal error)
385
165 Input voltage too low
Check correct operation of the gas valve.
Input voltage V<175V.
Check whether the power supply reductions are due to
reasons other than the boiler. If so, contact the electricity
provider.
CH = central heating.
(*) External Sensor: cold resistance value: approximately 1 kΩ @ 25° C (resistance decreases as temperature rises).
(**) NTC delivery, return and DHW sensor: cold resistance value: approximately 10 kΩ @ 25° C (resistance decreases as temperature rises).
(***) NTC fumes probe: cold resistance value: approximately 20 kΩ @ 25° C (resistance decreases as temperature rises).
5 reset attempts can be performed after which the boiler shuts down. Wait 15 minutes before attempting to reset the boiler
again.
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17. ADJUSTMENT AND SAFETY DEVICES
The boiler has been designed in full compliance with European reference standards and in particular is equipped with the following:
• Limit thermostat Thanks to a sensor placed on the CH flow line, this thermostat interrupts the flow of gas to the burner if the water in the primary
circuit overheats. It is forbidden to disable this safety device
• NTC fumes sensor This device is positioned on the fumes-water exchanger. The electronic board stops gas from flowing to the burner in case of over
heating.
It is forbidden to disable this safety device
• Flame ionisation detector The flame sensing electrode guarantees safety of operation in case of gas failure or incomplete ignition of the main burner. In
these conditions, the boiler blocks.
• Hydraulic pressure switch This device allows the main burner to be ignited only if system pressure is higher than 0.5 bars.
• Pump post-circulation The electronically-controlled pump post-circulation function lasts 3 minutes and is enabled, in the heating mode, if the ambient
thermostat causes the main burner to go out.
• Antifreeze device The electronic boiler management system includes an "antifreeze" function for the heating and DHW systems which, when flow
temperature falls below 5° C, operates the burner until a flow temperature of 30° C is reached. This function is enabled when the
boiler is switched on, the gas supply is open and the system is correctly pressurised.
• Anti-block pump function If no heat demand is received in the heating and/or DHW modes for 24 consecutive hours, the pump will automatically start and
operate for 10 seconds.
• Three-way valve anti-blockage function If no heat demand is received for a period of 24 hours, the three-way valve performs a complete switching cycle.
• Hydraulic safety valve (heating circuit) This device is set to 3 bar and is used for the heating circuit. Connect the safety valve to a drain trap. Do not use it to drain the
heating circuit.
• Heating pump pre-circulation In case of a heat demand in the heating mode, the appliance can pre-circulate the pump before the burner is ignited. This precirculation phase last from a few seconds to a few minutes, depending on the operating temperature and installation conditions.
18. PUMP CAPACITY/ HEAD
This is a high static head pump fit for installation on any type of single or double-pipe heating systems. The automatic air valve
incorporated in the pump allows quick venting of the heating system. KEY TO PUMP CHARTS - "SECTION" E
Q
H
WATER FLOW RATE
HEAD
MIN
MAX
Minimum speed of modulation
Maximum speed of modulation
5
±1
4 ±0,5
19. POSITIONING THE ELECTRODES
10 ±1
CG_2190
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I N S TA L L E R S e c t i o n ( e n )
20. ANNUAL SERVICING
If
the boiler was operating, wait for the combustion chamber and pipes to cool down.
Before commencing any maintenance operations, make sure the boiler is disconnected from the power supply. After servicing,
reset
the original operating parameters of the boiler if they were changed.
Do not clean the boiler with abrasive, aggressive and/or easily flammable substances (such as petrol, acetone, etc.).
I N S TA L L E R S e c t i o n ( e n )
To optimise boiler efficiency, carry out the following annual controls: • Check the appearance and airtightness of the gaskets of the gas and combustion circuits. Replace any worn seals with new
original spares;
• Check the state and correct position of the ignition and flame-sensing electrodes;
• Check the state of the burner and make sure it is firmly fixed;
• Check for any impurities inside the combustion chamber. Use a vacuum cleaner to do this;
• Check the pressure of the heating system;
• Check the pressure of the expansion vessel;
• Check the fan works correctly;
• Make sure the flue and air ducts are unobstructed;
• Check for any impurities inside the siphon (for condensation boilers);
• Check the magnesium anode, where present, for boilers fitted with storage boilers. It is advisable not to use the service cap at the base to empty and clean the siphon. Remove the siphon from inside the boiler
and clean it with a jet of water. Fill the siphon with clean water and put back in place, making sure that it is properly connected.
20.1 HYDRAULIC UNIT
For special areas, where the water is harder than 20 °F (1 °F = 10 mg calcium carbonate per litre of water), install, on the cold
water inlet, a polyphosphate dispenser or an equivalent treatment system, compliant with current regulations.
20.2 CLEANING THE FILTERS
Information valid only for models 24 - 28. The DHW and CH filters are housed inside removable cartridges (see figure in annex "SECTION" G at the end of this manual).
The CH cartridge is located on the CH return line (F) while the DHW cartridge is on the cold water inlet (E). To clean the filters,
proceed as described below:
•
•
•
•
switch off the boiler;
shut the DHW inlet valve;
drain the water in the CH circuit by opening valve (A);
remove the clip (1-E/F) from the filter as illustrated in the figure and take out the cartridge (2-E/F) containing the filter, taking
care not to apply excessive force;
to extract the heating filter cartridge, first remove the 3-way valve motor (1-2G);
eliminate any impurities and deposits from the filter;
reposition the filter in the cartridge and put it back into its housing, securing it with the clip.
The NTC DHW sensor is positioned in point (D).
•
•
•
•
Remove the scale from the seat and relative NTC sensor fitted on the DHW circuit (D).
When replacing and/or cleaning the O-rings on the hydraulic assembly, only use Molykote 111 as a lubricant, not oil or
grease.
20.3 DISMOUNTING THE WATER-WATER HEAT EXCHANGER
Information valid only for models 24 - 28. The stainless steel plate-type water-water heat exchanger is easily disassembled with a screwdriver (see figure in annex
"SECTION" G at the end of the manual ) by operating as described below:
• drain the system, just the boiler if possible, through the drain tap;
• drain the DHW system;
• remove the two screws at the front securing the water-water heat exchanger and pull it out (B).
To clean the exchanger and/or DHW circuit, use Cillit FFW-AL or Benckiser HF-AL.
Pay great attention when dismantling the individual parts of the hydraulic assembly. Do not use sharp tools, do not apply
excessive force when removing the fixing clip.
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30
20.4 REPLACEMENT OF PARTS
If one or more of the following components are replaced:
•
•
•
•
•
•
Water-fumes exchanger
Fan
Gas valve
Gas nozzle
Burner
Flame sensing electrode
perform the Automatic Calibration procedure described below, then check and adjust the CO2% value as indicated in the section
“COMBUSTION ADJUSTMENT FUNCTION (CO2% )”.
When
working on the appliance, check the condition and position of the flame sensing electrode and replace it if necessary.
AUTOMATIC CALIBRATION FUNCTION
Press
and
together and hold down for at least 6 seconds. When the display indicates "On" press
after pressing the previous buttons).
(within 3 seconds
If the display indicates "303" the Automatic Calibration function has not been activated. Disconnect the boiler from the mains
power
supply for a few seconds and repeat the procedure.
When the function is enabled,
and flash on the display
After the ignition sequence, which can also take place after a few attempts, the boiler performs three operations (each lasting
approximately 1 minute) going first to maximum power, then to ignition power and lastly to minimum power. Before moving on to
the following phase (from maximum power to ignition power and then to minimum power), and appear on the display.During
this phase, the power level reached by the boiler and the delivery temperature alternate on the display.
When , and
flash together on the display, the calibration function has terminated.
Press
to leave the function. The display shows ESC.
To access the Information and Advanced Setting mode, it is necessary to press, for at least 3 seconds, the IP button;
in INFO mode the display shows "INFO".
To escape the INFO mode briefly press the IP button.
In this mode press the OK button to scroll the windows; to set parameters press the +/button.
21. DISMANTLING, DISPOSAL AND RECYCLING
Only qualified technicians are authorised to service the device and system.
Before dismantling the appliance, be sure to disconnect the power supply, close the gas inlet shutoff valve and secure all of the
boiler and system connections.
Dispose of the appliance correctly according to the laws and regulations in place. The appliance and accessories cannot be
discarded along with normal household waste.
More than 90% of the materials that make up the appliance are recyclable. 31
7689490.01 (1-09/17)
I N S TA L L E R S e c t i o n ( e n )
This function can be enabled on the boiler control panel. To access the boiler control panel, refer to the chapter "ELECTRICAL
CONNECTIONS-ACCESS TO THE BOILER CONTROL BOX". 22. TECHNICAL SPECIFICATIONS
Model: LUNA DUO-TEC IN+
1.24 GA
24 GA
Cat.
II2H3P
Gas used
-
G20 - G31
28 GA
Rated heat input for DHW circuit.
kW
-
-
24,7
28,9
Rated heat input for heating circuit.
kW
12,4
24,7
20,6
24,7
Reduced heat input
kW
2,1
3,5
3,5
3,9
Rated heat output for DHW circuit
kW
-
-
24,0
28,0
Rated heat power 80/60°C
kW
12,0
24,0
20,0
24,0
Rated heat power 50/30 °C
kW
13,1
26,1
21,8
26,1
Reduced heat output
80/60 °C
kW
2,0
3,4
3,4
3,8
Reduced heat output
50/30 °C
kW
2,2
3,7
3,7
4,1
%
105,8
105,7
105,8
105,8
Rated efficiency
I N S TA L L E R S e c t i o n ( e n )
1.12 GA
50/30 °C
Max. pressure of water in heating circuit
bar
3
Min. pressure of water in heating circuit
bar
0,5
Capacity of water in expansion vessel
l
8
Minimum pressure of expansion vessel
bar
0,8
Max. pressure of water in DHW circuit
bar
-
-
8,0
8,0
Min. dynamic pressure in DHW circuit
bar
-
-
0,15
0,15
Minimum flow of water in DHW circuit
l/min
-
-
2,0
2,0
Production of DHW with ∆T = 25 °C
l/min
-
-
13,8
16,1
Production of DHW with ∆T = 35 °C
l/min
-
-
9,8
11,5
Specific flow “D” (EN 13203-1)
l/min
-
-
11,5
13,4
Temperature range in heating circuit
°C
25÷80
Temperature range in DHW circuit
°C
35÷60
-
C13 - C33 - C43 - C53 - C63 - C83 - B23
mm
60/100
Fumes typology
Coaxial flue duct diameter
Diameter of separate outlets
mm
Max. mass flow rate of fumes
kg/s
0,006
0,012
0,012
0,014
Min. mass flow rate of fumes
kg/s
0,001
0,002
0,002
0,002
°C
75
80
80
80
Max. temperature of fumes
80/80
Natural gas supply pressure 2H
mbar
20
Propane gas supply pressure 3P
mbar
37
Power supply voltage
V
230
Power supply frequency
Hz
Rated power supply
W
72
85
85
99
Net weight
kg
28,5
28,5
32,5
32,5
50
Dimensions (height/width/depth)
mm
770/470/238
Dimensions casing/template (height/width/depth)
mm
1170/600/240
-
IPX5D
Protection-limit against humidity (EN 60529)
EC certificate 0085CL0214
CONSUMPTION AT HEAT INPUT Qmax and Qmin
Qmax (G20) - 2H
m3/h
1,31
2,61
2,61
3,06
Qmin (G20) - 2H
3
m /h
0,22
0,37
0,37
0,41
Qmax (G31) - 3P
kg/h
0,96
1,92
1,92
2,25
Qmin (G31) - 3P
kg/h
0,16
0,27
0,27
0,30
7689490.01 (1-09/17)
32
23. TECHNICAL PARAMETERS
BAXI LUNA DUO-TEC IN+
1.12 GA
1.24 GA
24 GA
28 GA
Condensing boiler
Yes
Yes
Yes
Yes
Low-temperature boiler(1)
No
No
No
No
B1 boiler
No
No
No
No
Cogeneration space heater
No
No
No
No
Combination heater
No
No
Yes
Yes
kW
12
24
20
24
P4
kW
12.0
24.0
20.0
24.0
Useful heat output at 30% of rated heat
output and low temperature regime(1)
P1
kW
4.0
8.0
6.7
8.0
Seasonal space heating energy efficiency
ƞs
%
93
93
93
93
Useful efficiency at rated heat output and
ƞ4
high temperature regime(2)
%
88.1
87.9
88.0
87.9
Useful efficiency at 30% of rated heat
output and low temperature regime(1)
%
98.2
98.0
98.0
98.0
ƞ1
Auxiliary electricity consumption
Full load
elmax
kW
0.030
0.042
0.030
0.042
Part load
elmin
PSB
kW
0.013
0.013
0.013
0.013
kW
0.003
0.003
0.003
0.003
Standby mode
Other items
Standby heat loss
Pstby
kW
0.035
0.035
0.035
0.035
Ignition burner power consumption
Pign
kW
0.000
0.000
0.000
0.000
Annual energy consumption
QHE
GJ
37
74
62
74
Sound power level, indoors
LWA
dB
52
52
49
50
Emissions of nitrogen oxides
NOX
mg/kWh
21
16
15
17
XL
XL
Domestic hot water parameters
Declared load profile
Daily electricity consumption
Qelec
kWh
0.162
0.232
Annual electricity consumption
kWh
36
51
Water heating energy efficiency
AEC
ƞwh
%
88
86
Daily fuel consumption
Qfuel
kWh
21.780
22.470
Annual fuel consumption
AFC
GJ
17
17
(1) Low temperature means for condensing boilers 30°C, for low temperature boilers 37°C and for other heaters 50°C return temperature
(at heater inlet).
(2) High temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
33
7689490.01 (1-09/17)
I N S TA L L E R S e c t i o n ( e n )
Prated
Useful heat output at rated heat output
and high temperature regime(2)
Rated heat output
24. PRODUCT FICHE
BAXI LUNA DUO-TEC IN+
Space heating - Temperature application
1.12 GA
1.24 GA
Medium
Medium
Water heating - Declared load profile
Seasonal space heating energy efficiency class
A
A
I N S TA L L E R S e c t i o n ( e n )
Water heating energy efficiency class
24 GA
28 GA
Medium Medium XL
XL
A
A
A
A
Rated heat output (Prated or Psup)
kW
12
24
20
24
Space heating - Annual energy consumption
GJ
37
74
62
74
Water heating - Annual energy consumption
kWh(1)
GJ(2)
36
17
51
17
Seasonal space heating energy efficiency
%
93
93
Water heating energy efficiency
%
88
86
Sound power level LWA indoors
dB
49
50
93
(1) Electricity
(2) Fuel
7689490.01 (1-09/17)
34
52
93
52
I N S TA L L E R S e c t i o n ( e n )
7689490.01 (1-09/17)
35
36
SECTION A
7689490.01 (1-09/17)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
A
B
C
D
E
F
en
Pump with air separator
3-way valve with motor
Pressure gauge
CH removing filter
Non-return valve
Manual boiler filling tap
Automatic boiler filling tap
Domestic could water removing filter
DHW priority sensor
NTC DHW sensor
Check valve on automatic by-pass
Hydraulic Pressure Sensor
Boiler drain tap
Hydraulic Safety valve
DHW heat exchanger
Gas valve
Safety thermostat
NTC heating sensor (flow/return)
Fumes sensor
Coaxial connector
Water-fumes exchanger
Ignition electrode
Burner
Flame detection electrode
Air/gas blend manifold
Fan
Venturi
Expansion vessel
Siphon with condensate drain
Heating flow tap
DHW outlet/Storage boiler
Gas inlet tap
Cool DHW inlet tap
Heating return tap
SECTION A
37
7689490.01 (1-09/17)
3
2
1
L
N
2
1
G/V
M1
M
C
M
C
N
G/V
G/V
N
19
G/V
18
G/V
M
C
M
C
M
N
C
C
G/V
G/V
N
G/V
M
N
G/V
X23
G/V
N
C MV C M
X37
X2
G/V
C C
G/V
X22
X36
V
M B
C B R CC N RV C C R R
X5
C
X35
5
V VM M
X20
G/V
X34A
4
X3
L
X10
N
X13
X11
X12
C
GND
X34
X31
38
X15
6
R
N
N
R
B
IN
R
Vcc
C
17
16
7
C
12
R
N
V
V
V
M
M
M
N
N
C
N.O.
N.C.
COM
N.O.
N.C.
COM
S.R.
CG_2636
9
C
C
15
14
13
7 M
8
6
5
4
3
2
1
10
10
M2
C
8
7
CN1 6
5
RELE' 1 4
3
2
1
RELE' 2
11
CN6
7689490.01 (1-09/17)
CN2
X1
SECTION B
9
LUNA DUO-TEC IN 24 - 28
X24
7689490.01 (1-09/17)
Blue
Brown
Black
Red
Yellow/Green
Green
White
Grey
Yellow
Violet
C
M
N
R
G/V
V
B
G
Y
P
en
Fuses
230 V Power Supply
Room Thermostat (RT)
Fan
Safety Thermostat
Gas valve
DHW priority sensor
Automatic filling tap
Fumes sensor
Pressure Sensor
Heating return sensor
Heating flow sensor
NTC DHW sensor
Room Unit (R.U.) connection
Outdoor sensor
Flame sensor electrode
Ignition electrode
Diverter valve motor
Pump
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
SECTION B
39
3
2
1
L
N
2
1
G/V
M1
M
C
M
C
G/V
N
N
18
G/V
G/V
17
G/V
G/V
M
C
M
C
B
R
N
C
G/V
G/V
M
N
N
G/V
X23
G/V
G/V
G/V
N
C MV C M
C
G/V
C
X37
X2
C
V
M
B
X22
G/V
C C NR V C C R R
X5
X36
G/V
G/V
X35
5
V VM M
X20
G/V
X34A
G/V
X24
4
X3
L X10
N
X13
X11
X12
X34
X31
40
X15
6
R
N
N
R
7
16
15
C
C
11
R
N
V
V
V
7
CN1 6
5
RELE' 1 4
3
2
1
G/V
9
CG_2635
9
10
N.O.
N.C.
COM
S.R.
13
12
C
C
14
7 M
8
6
5
4
3
2
1
N.O.
N.C.
COM
M2
C
M
M
M
N
N
C
RELE' 2
10
CN6
7689490.01 (1-09/17)
CN2
X1
SECTION B
8
LUNA DUO-TEC 1.12 - 1.24
Celeste
Marrone
Nero
Rosso
Giallo/Verde
Verde
Bianco
Grigio
Giallo
Viola
C
M
N
R
G/V
V
B
G
Y
P
en
Fuses
230 V Power Supply
Room Thermostat (RT)
Fan
Safety Thermostat
Gas valve
Automatic filling tap
Fumes sensor
Pressure Sensor
Heating return sensor
Heating flow sensor
Room Unit (R.U.) connection
Outdoor sensor
Boiler NTC DHW sensor
Flame sensor electrode
Ignition electrode
Diverter valve motor
Pump
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
SECTION B
41
7689490.01 (1-09/17)
120
235
125
75
245
240
125
75
BOL
72
117
162
82
162
113
77
1170
SECTION C
600
230V
32,5
172
65 65 65 65
223
CG_2468
7689490.01 (1-09/17)
42
470
116
119
181
119
770
172
238
SECTION C
(24-28)
(1.12-1.24)
2
3
1
0
4
bar
83
140
22
135
65
65
65
65
75
CG_2634
43
7689490.01 (1-09/17)
35
37
470
35
35
400
O 8
770
657
135
65
65
65
65
75
34
G3/4"
G1/2"
G3/4"
G1/2"
G3/4"
30
SECTION C
O 8
7225538
7689490.01 (1-09/17)
44
SECTION D
25 mm
45
7689490.01 (1-09/17)
A B
CD
E
FG
SECTION D
H
I
Lmax = 10 m - Ø 60/100 mm
Lmax = 25 m - Ø 80/125 mm
Lmax = 9 m - Ø 60/100 mm
Lmax = 24 m - Ø 80/125 mm
Lmax = 10 m - Ø 60/100 mm
Lmax = 25 m - Ø 80/125 mm
Lmax = 10 m - Ø 60/100 mm
Lmax = 25 m - Ø 80/125 mm
Lmax = 8 m - Ø 60/100 mm
Lmax = 23 m - Ø 80/125 mm
Lmax = 9 m - Ø 60/100 mm
Lmax = 24 m - Ø 80/125 mm
L
(L1+L2) max = 80 m - Ø 80 mm
L1 max = 15 m
M
L max = 15 m
N
L max = 15 m
O
L max = 14 m
7689490.01 (1-09/17)
46
6
5,5
5
H (mH2O)
4,5
4
Max
3,5
3
2,5
Min
2
1,5
1
0,5
0
0
200
400
600
800
1000
1200
Q (l/h)
SECTION E
47
7689490.01 (1-09/17)
SECTION F
7689490.01 (1-09/17)
48
E
H
F
B
G
A
1
C
2
49
7689490.01 (1-09/17)
SECTION G
D
MODIFIED PARAMETERS
N°
7689490.01 (1-09/17)
VALUE
REMARKS
50
51
7689490.01 (1-09/17)
36061 Bassano del Grappa (VI) - ITALIA
Via Trozzetti, 20
Servizio clienti: tel. 0424-517800 – Telefax 0424-38089
www.baxi.it
7689490.01 (1-09/17)