Fondital ITACA KB 24 Quick start guide

ITACA KB
24 - 32
INSTALLATION, USE AND MAINTENANCE
EN
Translation of the
original instructions (in
Italian)
IST 03 845 - 01

Dear Sirs,
thank You for choosing and buying one of our products. Please read these instructions carefully in order to properly install, operate, and
maintain the product.
WARNING
• We inform users that:
• Boilers shall be installed by an authorised company under the requirements set forth by the prevailing rules, in full compliance
with the prevailing regulations and standards.
• Anyone entrusting installation to an unqualied installer will be subject to administrative sanctions.
• Boilers must be maintained by qualied personnel only, under the requirements set forth by the prevailing rules.
We hereby inform you that certain models, versions and/or accessories relevant to the products this manual refers to, might not
be available in some countries.
Therefore, it is recommended to contact the manufacturer or the importer in order to get the necessary information about the
actual availability of such models, versions and/or accessories.
The manufacturer reserves the right to modify the products and/or its components as deemed necessary, in any moment and
without prior notice.
This instruction manual is available in two languages, Italian and English, without prejudice to the prevalence of Italian language
in case of dierences in translation and/or dispute on construction of the text.

3
General notes for installing and maintenance technicians, and users
This instruction manual is an integral and essential part of the product. It shall be supplied by the installer to the user who shall keep it carefully
to consult it whenever necessary.
This document shall be supplied together with the equipment in case the latter is sold or transferred to others.
DANGER
This equipment has been manufactured to be connected to a room heating system and to a DHW distribution system.
Any other use shall be considered unsuitable and dangerous for people, animals, and/or property.
The equipment shall be installed in compliance with the prevailing standards and in accordance with the manufacturer's instructions specied
in this manual: the manufacturer will not be held responsible for injuries to people and animals and/or damages to property resulting from
an incorrect installation.
Damage and/or injury caused by incorrect installation or use and/or damage and/or injury due to non-observance of the manufacturer’s
instructions shall release the manufacturer from any and all contractual and extra-contractual liability.
Before installing the boiler, check that the technical data correspond to the requirements for its correct use in the system.
Check that the boiler is intact and it has not been damaged during transport and handling. Do not install equipment which is clearly damaged
and/or faulty.
Do not obstruct the air intake openings.
Only original accessories or optional kits (including the electric ones) are to be installed.
Properly dispose of the packaging as all the materials can be recycled. The packaging must therefore be sent to specic waste management
sites.
After removing the packaging, make sure that its elements (clips, plastic bags, foam polystyrene etc.) are note left within the reach of children
as they are potential hazard sources.
In the event of failure and/or faulty functioning, switch o the boiler. Do not attempt to make repairs: contact qualied technicians.
Original parts must be used for all repairs to the boiler.
Non-observance of the above requirements may aect the safety of the boilers and endanger people, animals and/or property.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of
experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible
for their safety.
Children should be supervised to ensure that they do not play with the appliance.
WARNING
The boiler must be serviced periodically as indicated in the relevant section of this manual.
Appropriate boiler maintenance ensures ecient operation, environment preservation, and safety for people, animals and objects.
Incorrect and irregular maintenance can be a source of danger for people, animals and property.
The user is strongly advised to have the system serviced and repaired by qualied personnel, satisfying all prevailing law requirements, and
trained to properly carry out these operations.
In the event of long periods of inactivity of the boiler, disconnect it from the electrical power mains and close the gas cock. The electronic
antifreeze function will not be operative with the device disconnected from the electric power supply and gas cock closed.
Should there be a risk of freezing, add antifreeze: it is not advisable to drain the system as this may result in damage;use specic anti-freeze
products suitable for multi-metal heating systems.

4
DANGER
With gas red boilers, take the following measures if you smell gas:
• Do not turn on or o electric switches and do not turn on electric appliances.
• Do not ignite ames and do not smoke.
• Close the main gas cock.
• Open doors and windows.
• Contact a Service Centre, a qualied installer or the gas supply company.
Never use a ame to locate a gas leak.
The boiler is designed for installation in the countries indicated on the technical data plate: installation in any other country may
be a source of danger for people, animals and/or property.
The manufacturer will bear no contractual and tortious liability for failure to comply with all the instructions above.

5
Rapid operating instructions
The following instructions will help you to switch the boiler on quickly and regulate it for immediate use.
WARNING
It is presumed that the boiler has been installed by a qualied installer, it has been commissioned and is ready to operate correctly.
If any accessories have been tted on the boiler, these instructions will not cover them. You will therefore have to refer to the full
boiler instructions as well as to the specic instructions for the accessories.
This manual contains full details of how the boiler works, and full operating and safety instructions.
1. Open the gas cock installed ahead of the boiler.
2. Turn the master switch installed ahead of the boiler ON; the boiler display turns on.
3. If you do not wish to activate the CH function, press the button until displaying the symbol : only the
DHW function will be enabled.
4. If you wish to activate both the heating and DHW functions, press the button until displaying the symbol
.
5. If you do not wish to activate the DHW function, press the button until displaying the symbol : only
the CH function will be enabled.
6. To set the domestic hot water temperature, press DHW +/- buttons.
7. Activate water heater pressing button. is displayed.
8. To set the heating water temperature, press CH +/- buttons.
9. Set the desired temperature on the (optional) ambient thermostat in the building. The boiler is now ready to
operate.
If the boiler shuts down, press button
If boiler does not resume its operation after three attempts, contact a qualied Service Centre.

6
1. Instructions for the user .......................................................... 10
1.1 Control panel....................................................................................................................................................................................... 10
1.2 Interpreting boiler status from display indications.................................................................................................................... 13
1.3 Selecting the operating mode......................................................................................................................................................... 14
1.4 Comfort function enable/disable................................................................................................................................................... 15
1.5 Adjusting heating and DHW temperature ................................................................................................................................... 16
1.6 Time setting ......................................................................................................................................................................................... 17
1.7 "Day temperature" and "night temperature" setting................................................................................................................. 18
1.8 "Automatic" programme setting .................................................................................................................................................... 19
1.9 "Manual" programme setting.......................................................................................................................................................... 20
1.10 Programming mode for heating and water heater................................................................................................................... 21
1.11 Parameter display .............................................................................................................................................................................. 22
1.12 Failures that cannot be reset ........................................................................................................................................................... 22
1.13 Resume boiler function ..................................................................................................................................................................... 22
1.14 Boiler operation .................................................................................................................................................................................. 23
1.15 Boiler shut-down ................................................................................................................................................................................ 26
1.16 Maintenance ....................................................................................................................................................................................... 29
1.17 Notes for the user................................................................................................................................................................................ 29
2. Technical features and dimensions................................................. 30
2.1 Technical features .............................................................................................................................................................................. 30
2.2 Dimensions .......................................................................................................................................................................................... 32
2.3 Key components ................................................................................................................................................................................. 33
2.4 Boiler layouts....................................................................................................................................................................................... 34
2.5 Operating data ................................................................................................................................................................................... 35
2.6 General characteristics...................................................................................................................................................................... 36
2.7 ERP and Labelling data..................................................................................................................................................................... 38
3. Instructions for the installer ....................................................... 40
3.1 Installation standards....................................................................................................................................................................... 40
3.2 Choosing where to install the boiler.............................................................................................................................................. 41
3.3 Positioning the boiler ........................................................................................................................................................................ 41
3.4 Installing the boiler ............................................................................................................................................................................ 43
3.5 Boiler room ventilation ..................................................................................................................................................................... 44
3.6 Air intake and ue gas venting system ......................................................................................................................................... 44
3.7 Checking combustion eciency..................................................................................................................................................... 51
3.8 Connection to gas mains.................................................................................................................................................................. 52
3.9 Hydraulic connections ...................................................................................................................................................................... 52
3.10 Connection to electrical mains ....................................................................................................................................................... 54
3.11 Connection to ambient thermostat (optional) ........................................................................................................................... 54
3.12 Installation and operation with Open Therm Remote Control (optional) ........................................................................... 55
3.13 TSP parameters................................................................................................................................................................................... 58
3.14 Filling the system................................................................................................................................................................................ 60
3.15 Starting up the boiler......................................................................................................................................................................... 61
3.16 Available head .................................................................................................................................................................................... 62
3.17 Wiring diagram................................................................................................................................................................................... 63
3.18 Adaptation to other gas types and burner adjustment............................................................................................................ 68
4. Testing the boiler................................................................ 73
4.1 Preliminary checks ............................................................................................................................................................................. 73
4.2 Switching on and switching o ...................................................................................................................................................... 73
5. Maintenance ................................................................... 74
5.1 Maintenance schedule...................................................................................................................................................................... 74
5.2 Combustion analysis......................................................................................................................................................................... 74

7
6. Decommissioning, disassembly and disposal ........................................ 75
7. Malfunctions, possible causes and solutions ......................................... 76
7.1 Troubleshooting ................................................................................................................................................................................. 76

8
Fig. 1 Control panel .............................................................................................................10
Fig. 2 Filler cock.................................................................................................................27
Fig. 3 Dimensions...............................................................................................................32
Fig. 4 Key components..........................................................................................................33
Fig. 5 Hydraulic diagram ........................................................................................................34
Fig. 6 Paper template ...........................................................................................................42
Fig. 7 Mounting bracket xing ..................................................................................................43
Fig. 8 Installation examples .....................................................................................................45
Fig. 9 Type C13 - C33 coaxial ducts ..............................................................................................47
Fig. 10 Type C12 - C33 coaxial pipes dimensione .................................................................................48
Fig. 11 Type C43 - C53 - C83 split ducts ..........................................................................................50
Fig. 12 Type C43 - C53 - C83 split pipes dimensione ..............................................................................50
Fig. 13 Plugs position ...........................................................................................................51
Fig. 14 Hole position ............................................................................................................51
Fig. 15 Connection to gas mains.................................................................................................52
Fig. 16 Thermoregulation curves ................................................................................................57
Fig. 17 Available head KB 24 ....................................................................................................62
Fig. 18 Available head KB 32 ....................................................................................................62
Fig. 19 Wiring diagram ..........................................................................................................63
Fig. 20 Multifunction relay connection diagram..................................................................................64
Fig. 21 Relay with remote control and TA2 .......................................................................................65
Fig. 22 Relay with interface and TA2 .............................................................................................65
Fig. 23 Relay with remote request (P17=1) .......................................................................................66
Fig. 24 Relay with TA2 request (P17 = 3) .........................................................................................66
Fig. 25 Relay with alarm alert (P17 = 0) ..........................................................................................67
Fig. 26 Intake pipe ..............................................................................................................70
Fig. 27 Mixer....................................................................................................................70
Fig. 28 Mixer plastic body .......................................................................................................70
Fig. 29 Assembling direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Fig. 30 Adjusting CO2 value .....................................................................................................72

9
Tab. 1 Displayable parameters with info button..................................................................................22
Tab. 2 Adjustment rates, KB 24 ..................................................................................................35
Tab. 3 Adjustment rates, KB 32 ..................................................................................................35
Tab. 4 General specications ....................................................................................................36
Tab. 5 Combustion specications, KB 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Tab. 6 Combustion specications, KB 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Tab. 7 ERP and Labelling data KB 24 .............................................................................................38
Tab. 8 ERP and Labelling data KB 32 .............................................................................................39
Tab. 9 Boiler re-ignition temperature ............................................................................................54
Tab. 10 Limits to be set for TSP parameters and default values in relation to boiler type (TSP0).....................................55
Tab. 11 Parameter setting .......................................................................................................67
Tab. 12 Relationship between "Temperature and Nominal resistance" for temperature probes.....................................67
Tab. 13 P0-TSP0 parameter values ...............................................................................................71
Tab. 14 Flue CO2 content .......................................................................................................72
Tab. 15 Diameter of nozzles - diaphragms (mm) .................................................................................72

10 Instructions for the user
1. Instructions for the user
1.1 Control panel
13
11
10
9
17
16
8
7
6
4
1
2
A B C
H EGFD
12
14
15
18
19
20
3
5
21
22
23
24
Fig. 1 Control panel
A. Temperature selection (day/night) and information recall.
B. Weekly programme for temperature zones and manual programme selection.
C. Time and ambient temperature setting.
D. Set the domestic hot water (DHW +/-).
E. Set the heating water and the (CH +/-) settings.
F. Alarm reset and back to the starting page during parameter selection.
G. DHW comfort function setting and conrm button
H. Operating status selection.
Touch the display in order to activate it. Unless an operation is performed, the display deactivates after 15 seconds.

11
Instructions for the user
Ref. Symbol Steady on Flashing
1Indication of "parameter" inside the
parameter menu Not used
2
Displaying of the number of
parameters, or of the system pressure,
or of the burner power percentage
Not used
3Lit ame indication Not used
4
Indication of the temperatures
and values of fault and shutdown
parameters
Not used
5A heating request is present Displaying of the heating temperature
set-point
6A DHW request is present Displaying of the DHW temperature
set-point
7DHW "Comfort" function enabled Not used
8Current temperature (sun = day;
moon = night)
Setting of the two temperatures
associated with the day and the night
9Display of current time/fan revolutions Not used
10 Indicates if the unit is in time slot
programming mode Not used
11 Manual mode operation Manual mode setting
12 Display of zone 1 heating programme Edit zone 1 heating programme
13 Current day of the week Edit day of the week
14 Display of zone 2 heating programme Edit zone 2 heating programme
15 Display of water heater programme Edit water heater programme
16 Night time temperature indication Not used
17 Daytime temperature indication All lights ashing: automatic mode
setting
18 Displaying of the ue cleaning
function
Indicates that you are accessing the
ue cleaning function.
19
Boiler operating condition indication Not used

12 Instructions for the user
Ref. Symbol Steady on Flashing
20 Not used Displaying of the ctitious
ambient temperature set-point
21 Indication of the centigrade
degrees Not used
22
During parameter setting, the
'wrench' symbol stays on until
the value is conrmed.
Not used
23 Indication of system pressure
measurement unit Not used
24 Percentage indication Not used

13
Instructions for the user
1.2 Interpreting boiler status from display indications
1.2.1 Normal operation
Boiler switch in OFF mode.
Boiler switch in SUMMER or WINTER mode or CH ONLY.
No active function.
The ow temperature and the heating system pressure are displayed.
SUMMER WINTER CENTRAL HEATING ONLY
Boiler switch in SUMMER or WINTER mode.
Water heater enabled - DHW function active
DHW temperature displayed (water heater)
SUMMER WINTER
Boiler switch in WINTER mode or CH ONLY.
CH function active.
The ow water temperature is displayed.
WINTER CENTRAL HEATING ONLY
1.2.2 Malfunction
To identify any malfunctions, refer to paragraph Troubleshooting on page 76.

14 Instructions for the user
1.3 Selecting the operating mode
Whenever key is pressed, the "SUMMER”, “WINTER” , “CH ONLY”, “OFF” modes are enabled in sequence.
At this stage, all buttons are enabled.
1. "OFF" operating status
When the "OFF" mode is enabled, no function is active.
2. "SUMMER" operating status
When the "SUMMER" mode is enabled, only the DHW production function is active.
3. "WINTER" operating status
When the "WINTER" mode is enabled, both DHW and CH functions are active.
4. "CH ONLY" operating status
When the "CH ONLY" mode is enabled, only the heating water production function is active.

15
Instructions for the user
1.4 Comfort function enable/disable
This function always keeps the water heater warm, without considering the programming of water heater heating time (see par. Programming
mode for heating and water heater on page 21).
When the "COMFORT" icon is on, the function is enabled. When it is o the function is disabled and the boiler follows the set water heater hour
programming (see par. Programming mode for heating and water heater on page 21).
If "comfort" function is enabled (“comfort”), press "OK" button to disable it.
If "comfort" function is disabled (“comfort” icon OFF), press "OK" button to enable it.
Water heater heating, through the "COMFORT" function or programming, is carried out only if the boiler is in "SUMMER" or "WINTER" mode.
If the boiler is in "CH ONLY" or "OFF" operating mode the water heater is not heated.
1. "Comfort" function enabled
2. Press OK
3. "Comfort" function disabled

16 Instructions for the user
1.5 Adjusting heating and DHW temperature
Press button +/- DHW to select the desired DHW temperature.
During selection, icon will ash.
In the phase in which the icon is ashing, only the buttons to adjust the temperature are enabled.
As soon as button is released, icon will continue ashing for approx. 3 seconds, and temperature value will ash as
well.
After this time, value is stored and display standard operation will be restored.
Press CH +/- button to select the desired ow water temperature.
During selection, icon will ash.
In the phase in which the icon is ashing, only the buttons to adjust the temperature are enabled.
As soon as button is released, icon will continue ashing for approx. 3 seconds, and temperature value will ash as
well.
After this time, value is stored and display standard operation will be restored.

17
Instructions for the user
1.6 Time setting
1. To set time, minutes and day of the week, press .
2. Flashing values can be edited by pressing CH +/- buttons. The rst value to be modied is "HOURS".
3. Press OK to conrm the edited values and shift to next parameter.The second value to be modied is "MINUTES".
Flashing values can be edited by pressing CH +/- buttons.
4. Press to access the day and night setting function described in the following paragraph.
5. Press OK to conrm the edited values and shift to next parameter. The third value to be modied is "DAYS". Day
of the week can be selected by pressing CH +/- buttons.
6. Press OK to conrm the edited values. Press to quit the function and go back to starting page.

18 Instructions for the user
1.7 "Day temperature" and "night temperature" setting
When one or more ambient probes are connected to boiler electronic board, two levels of desired ambient temperatures can be set. Boiler will
manage the heating request based on the set temperatures, as follows.
If no ambient probe is connected to the boiler, temperatures cannot be set.
"Day" temperature is identied by the symbol , while "night" temperature
by the symbol .
The "day temperature" is active when bars are on, while "night" temperature
is active when bars are o.
A
B
A bars on
B bars o
1. Press twice to access the "day temperature" setting mode.
2. Press CH +/- buttons to edit "day temperature" values.
3. Press OK to conrm the edited values and enter the "night temperature" setting mode.

19
Instructions for the user
4. Press CH +/- buttons to edit "night temperature" values.
5. Press OK to conrm the edited values and quit the setting mode.
1.8 "Automatic" programme setting
The selection of "automatic" mode, identied by symbol , allows boiler to enable heating of both zones in "day temperature" or
"night temperature", based on the programming envisaged for zone 1 and zone 2.
1. Press PROG twice to access the automatic programme setting mode.
2. Press OK to conrm.
3. Press to go back to the starting page, namely to quit the function.

20 Instructions for the user
1.9 "Manual" programme setting
The "manual" mode selection indicated with symbol , allows activating the heating function, 24 hours a day, in both zones at the "day
temperature", disabling at the same time zone 1 and zone 2 programming.
External water heater, if there is one, is heated according to the specic programme.
1. Press to access the manual programme setting mode.
2. Press OK to conrm.
3. Press to go back to the starting page, namely to quit the function.