Fondital ITACA Series Quick start guide

IST 03 C 860 - 03
ITACA
KC 12-24-28-32
KR 12-24-28-32
KRB 12-24-28-32
INSTALLATION, USE AND MAINTENANCE
EN
Translation of the
original instructions (in
Italian)
It is compulsory to read this manual before proceeding with the boiler installation, use and
maintenance operations.
This boiler is intended for production of hot technical water only:
• For heating of residential, commercial and industrial rooms.
• For heating of industrial process water.
• For indirect production of domestic hot water.
Any other use is forbidden.

2
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.
WARNING
According to European Directive 2012/19/EU on waste electrical and electronic equipment (WEEE) the
crossed-out wheelie bin symbol indicated on the boiler and on the package means that the boiler, at the
time of its decommissionig, must be collected and disposed of separately from other waste (see Decom-
missioning, disassembly and disposal).
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 differences 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.
WARNING
This boiler is intended for production of hot technical water only:
• For heating of residential, commercial and industrial rooms.
• For heating of industrial process water.
• For indirect production of domestic hot water.
Any other use is forbidden.
DANGER
This boiler must be installed by qualied personnel.
The installation by unqualied personnel is forbidden.
DANGER
This boiler must be installed in compliance with the requirements of the technical standards and legislation in force rela-
ting to gas appliances, particularly with reference to ventilation of the premises.
Any installation that does not comply with the requirements of the technical standards and legislation in force is forbid-
den.
DANGER
This boiler must be installed according to the manufacturer’s instructions given in this manual. Incorrect installation may
cause injury to persons and/or animals and damage to property. The manufacturer shall not be held liable for any such
injury and/or damage.
WARNING
This boiler must be installed inside the building or in a partially sheltered place.
A partially sheltered place is a place which is not directly exposed to atmospheric agents.
Any installation in a place that is not partially sheltered is forbidden.
DANGER
This boiler must be correctly and safely connected to an electrical system compliant with the existing technical stan-
dards.
Any incorrect and unsafe connection to the electrical system is forbidden.
It is forbidden to connect the boiler to an electrical system lacking a differential switch to protect the boiler power line.
Any connection to an electrical system lacking a proper grounding system is forbidden.
WARNING
The boiler is supplied with a three-poled power cable, already connected to the electronic board and it is provided with
a safety clamp.
This boiler must be connected to a 230V power supply network, as indicated on the label afxed to the power cable.

4
DANGER
Carefully read the instructions relating to air intake and ue gas venting systems in the specic section of this manual.
DANGER
This boiler must be connected to a gas distribution system which complies with the existing technical standards.
Check the gas system state of conservation before installing the boiler.
Any connection to a gas system which does not comply with the existing technical standards is forbidden.
When connecting the boiler to gas supply network, it is compulsory to install an appropriately sized gasket made from
suitable material.
The boiler gas inlet coupling is not suitable for hemp, teon tape or similarly made gaskets.
After connecting the boiler, check the connection for tightness.
Once gas is in the pipes, leak test by a naked ame is forbidden; use specic products available on the market.
DANGER
With gas red boilers, take the following measures if you smell gas:
• Do not turn on or off 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.
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.
Damage and/or injury caused by incorrect installation or use and/or damage and/or injury due to non-observance of the manufactu-
rer’s instructions shall release the manufacturer from any and all contractual and extra-contractual liability.
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 ma-
nagement 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 off 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 affect 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.

5
DANGER
Before starting the boiler, and each time it is at a standstill for several days, make sure the trap is full of water.
If the trap is empty, ll it by pouring water into the boiler through the ue gas venting duct.
WARNING
The boiler must be serviced periodically as indicated in the relevant section of this manual.
Appropriate boiler maintenance ensures ef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 require-
ments, 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.
WARNING
With the electrical power disconnected and the gas tap closed, the device’s electrical anti-freeze function does not work.
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.
DANGER
Damage and/or injury caused by incorrect installation and/or incorrect use and/or unauthorized changes to the boiler
and/or non-observance of the manufacturer’s instructions and/or of the relative standards/laws in force in the country of
installation, shall release the manufacturer from any and all liability.

6
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. To set the heating water temperature, press CH +/- buttons.
8. 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.

7
1. Instructions for the user ..............................................11
1.1 Control panel.........................................................................................................................................11
1.2 Interpreting boiler status from display indications .................................................................................13
1.3 Selecting the operating mode................................................................................................................15
1.4 Adjusting heating and DHW temperature..............................................................................................15
1.5 Comfort function enable/disable............................................................................................................16
1.6 Time setting...........................................................................................................................................16
1.7 "Day temperature" and "night temperature" setting...............................................................................17
1.8 "Manual" programme setting.................................................................................................................18
1.9 "Automatic" programme setting.............................................................................................................18
1.10 CH programme mode............................................................................................................................19
1.11 Parameter display .................................................................................................................................20
1.12 Failures that cannot be reset.................................................................................................................20
1.13 Resume boiler function..........................................................................................................................20
1.14 Boiler operation.....................................................................................................................................21
1.15 Boiler shut-down....................................................................................................................................25
1.16 Maintenance..........................................................................................................................................27
1.17 Notes for the user..................................................................................................................................27
2. Technical features and dimensions......................................28
2.1 Technical features.................................................................................................................................28
2.2 Dimensions............................................................................................................................................30
2.3 Boiler layouts.........................................................................................................................................33
2.4 Operating data.......................................................................................................................................36
2.5 General characteristics..........................................................................................................................37
2.6 ERP and Labelling data.........................................................................................................................40
3. Instructions for the installer............................................42
3.1 Installation standards ............................................................................................................................42
3.2 Choosing where to install the boiler ......................................................................................................42
3.3 Positioning the boiler.............................................................................................................................42
3.4 Installing the boiler ................................................................................................................................44
3.5 Boiler room ventilation...........................................................................................................................44
3.6 Air intake and ue gas venting system..................................................................................................45
3.7 Checking combustion efciency............................................................................................................55
3.8 Connection to gas mains.......................................................................................................................56
3.9 Hydraulic connections...........................................................................................................................56
3.10 Connection to electrical mains..............................................................................................................58
3.11 Connection to ambient thermostat (optional) ........................................................................................58
3.12 Installation of the (optional) external probe and sliding temperature operation ....................................58
3.13 Room temperature installation..............................................................................................................60
3.14 Selecting the operating range in heating mode.....................................................................................60
3.15 Installation and operation with Open Therm Remote Control (optional)...............................................61
3.16 TSP parameters....................................................................................................................................62
3.17 Filling the system...................................................................................................................................67
3.18 Starting up the boiler.............................................................................................................................67
3.19 Available head.......................................................................................................................................68
3.20 Wiring diagrams ....................................................................................................................................71
3.21 Adaptation to other gas types and burner adjustment...........................................................................83
4. Testing the boiler....................................................87
4.1 Preliminary checks................................................................................................................................87
4.2 Switching on and switching off..............................................................................................................87
5. Maintenance .......................................................88
5.1 Maintenance schedule ..........................................................................................................................88
5.2 Combustion analysis.............................................................................................................................89
5.3 Extraordinary maintenance ...................................................................................................................89
6. Decommissioning, disassembly and disposal..............................91

8
7. Malfunctions, possible causes and solutions ..............................92
7.1 Troubleshooting.....................................................................................................................................92

9
Fig. 1 Control panel ................................................................................11
Fig. 2 Filler cocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Fig. 3 Model KC dimensions..........................................................................30
Fig. 4 Model KR dimensions..........................................................................31
Fig. 5 Model KRB dimensions ........................................................................32
Fig. 6 Model KC hydraulic layout ......................................................................33
Fig. 7 Model KR hydraulic layout ......................................................................34
Fig. 8 Model KRB hydraulic layout .....................................................................35
Fig. 9 Paper template...............................................................................43
Fig. 10 Split kit installation ...........................................................................46
Fig. 11 Coaxial kit installation.........................................................................46
Fig. 12 Installation examples .........................................................................47
Fig. 13 Pipe installation .............................................................................47
Fig. 14 Wall-mounted terminal installation ...............................................................48
Fig. 15 Tile for pitched roofs..........................................................................48
Fig. 16 Roof ue installation ..........................................................................49
Fig. 17 Coaxial ducts C33 distance specs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Fig. 18 Coaxial ducts C43 - C53 - C83..................................................................54
Fig. 19 Coaxial ducts C43 - C53 - C83 dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Fig. 20 Plugs position...............................................................................55
Fig. 21 Hole position................................................................................55
Fig. 22 Connection to gas mains ......................................................................56
Fig. 23 Condensate drain............................................................................57
Fig. 24 Thermoregulation curves ......................................................................59
Fig. 25 Available head KC-KR-KRB 12 .................................................................68
Fig. 26 Available head KC-KR-KRB 24 .................................................................69
Fig. 27 Available head KC-KR-KRB 28 .................................................................69
Fig. 28 Available head KC-KR-KRB 32 .................................................................70
Fig. 29 Wiring diagram KC ...........................................................................71
Fig. 30 Wiring diagram for forced circulation solar system with combi boiler.....................................73
Fig. 31 Multifunction relay connection diagram ...........................................................73
Fig. 32 Wiring diagram for natural circulation solar system with combi boiler ....................................74
Fig. 33 Multifunction relay connecting diagram (X = neutral; Y = to boiler; Z = to collector) .........................74
Fig. 34 Wiring diagram KR ...........................................................................75
Fig. 35 Forced circulation solar system with CH only boiler wiring diagram......................................77
Fig. 36 Multifunction relay connection diagram ...........................................................77
Fig. 37 Wiring diagram KRB..........................................................................78
Fig. 38 Relay with remote control and TA2...............................................................81
Fig. 39 Relay with remote request (P17=1) ..............................................................81
Fig. 40 Relay with TA2 request (P17 = 3)................................................................82
Fig. 41 Intake pipe .................................................................................84
Fig. 42 Mixer......................................................................................84
Fig. 43 Mixer plastic body............................................................................85
Fig. 44 Assembling direction..........................................................................85
Fig. 45 Adjusting CO2 value..........................................................................86

10
Tab. 1 Displayable parameters with info button ...........................................................20
Tab. 2 Adjustment specications KC-KR-KRB 12..........................................................36
Tab. 3 Adjustment specications KC-KR-KRB 24..........................................................36
Tab. 4 Adjustment specications KC-KR-KRB 28..........................................................36
Tab. 5 Adjustment specications KC-KR-KRB 32..........................................................36
Tab. 6 General specications KC models................................................................37
Tab. 7 General specications KR/KRB models ...........................................................38
Tab. 8 Combustion specications KC-KR-KRB 12 .........................................................39
Tab. 9 Combustion specications KC-KR-KRB 24 .........................................................39
Tab. 10 Combustion specications KC-KR-KRB 28 ........................................................39
Tab. 11 Combustion specications KC-KR-KRB 32 ........................................................39
Tab. 12 Additional specications.......................................................................39
Tab. 13 ERP and Labelling data - KC...................................................................40
Tab. 14 ERP and Labelling data - KR/KRB ..............................................................41
Tab. 15 Boiler re-ignition temperature ..................................................................60
Tab. 16 List of parameters - I .........................................................................62
Tab. 17 List of parameters - II.........................................................................63
Tab. 18 List of parameters - III ........................................................................64
Tab. 19 Solar parameter (with P17=2 or with supplementary board)...........................................65
Tab. 20 System check ..............................................................................65
Tab. 21 Display only ................................................................................66
Tab. 22 Parameter setting ...........................................................................82
Tab. 23 Relationship between "Temperature and Nominal resistance" for temperature probes ......................82
Tab. 24 Flue CO2 content............................................................................86
Tab. 25 Diameter of nozzles - diaphragms (mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

Instructions for the user 11
1. Instructions for the user
1.1 Control panel
13
11
10
9
17
16
8
7
6
4
3
1
2
A B C
H EGFD
12
14
15
18
19
20
26
5
21
22
25
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.

Instructions for the user
12
Ref. Symbol Steady on Flashing
1Indication of "parameter" inside the
parameter menu Not used
2Displaying of the number of parame-
ters, or of the system pressure, or of
the burner power percentage Not used
3Automatic lling procedure is active Not used
4Indication of the temperatures and va-
lues 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 asso- ciated with the sun and the moon
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 and of the "rpm" wording to
show the number of revolutions per
minute
Indicates that you are accessing the
ue cleaning function.
19 Instantaneous DHW production and
heating functions enabled Not used
20 Not used Display of set-point

Instructions for the user 13
Ref. Symbol Steady on Flashing
21 Indication of the centigrade degrees Not used
22 Solar pump or solar valve active Not used
23 Indication of system pressure measu-
rement unit Not used
24 Percentage indication Not used
25 During parameter editing, the wrench
symbol stays on until the set datum is
conrmed. Not used
26 Lit ame indication Not used
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 di-
splayed.
SUMMER WINTER CENTRAL HEATING ONLY

Instructions for the user
14
Boiler switch in SUMMER or WINTER mode.
DHW function enabled.
DHW temperature is displayed.
For models KC only.
SUMMER WINTER
Boiler switch in WINTER mode or CH ONLY.
CH function active.
The ow water temperature is displayed.
WINTER CENTRAL HEATING ONLY
Boiler switch in SUMMER or WINTER mode.
External water heater enabled
DHW temperature is displayed.
For models KR and KRB with optional water heater, only.
SUMMER WINTER
1.2.2 Malfunction
To identify any malfunctions, refer to paragraph Troubleshooting on page 92.

Instructions for the user 15
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 ac-
tive.
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 fun-
ction is active.
1.4 Adjusting heating and DHW temperature
Press button +/- DHW to select the desi-
red DHW temperature.
During selection, icon will ash.
In the phase in which the icon is ashing,
only the buttons to adjust the temperatu-
re 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 di-
splay standard operation will be resto-
red.
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 temperatu-
re 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 di-
splay standard operation will be resto-
red.

Instructions for the user
16
1.5 Comfort function enable/disable
This function keeps the plate heat exchanger hot, to minimise the waiting time for the production of DHW.When the "comfort" icon
is on, the function is enabled. When it is off the function is disabled and the boiler is in standard DHW operating mode for an instant
boiler.For KR/KRB models with CH only, the "comfort" function is not available and thus the word "COMFORT" is always disabled on
the display.
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.
1. "Comfort" function enabled
2. Press OK 3. "Comfort" function disabled
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 va-
lues 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 OK to conrm the edited va-
lues 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.
5. Press OK to conrm the edited va-
lues. Press to access the day
and night setting function described
in the following paragraph. Press
to quit the function and go
back to starting page.

Instructions for the user 17
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" tempera-
ture by the symbol .
The "day temperature" is active when bars are on, while "night" tempe-
rature is active when bars are off.
A
B
Abars on
Bbars off
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 va-
lues and enter the "night temperatu-
re" setting mode.
4. Press CH +/- buttons to edit "night
temperature" values.
5. Press OK to conrm the edited va-
lues and quit the setting mode.

Instructions for the user
18
1.8 "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 star-
ting page, namely to quit the fun-
ction.
1.9 "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 star-
ting page, namely to quit the fun-
ction.

Instructions for the user 19
1.10 CH programme mode
To access zone 1 heating programme
displaying or editing, press button
twice.
1. The display shows zone 1 symbol
ashing, sun or moon symbols, bars
on or off, respectively , at 00:00.
Clock lights display the program-
ming connected to day 1 (Monday)
and 00:00 bar is ashing.
2. Press OK to access zone program-
ming function. "PROG" wording
starts ashing together with number
1 (Monday).
3. The required day can be selected by
pressing CH +/- buttons.
4. Press OK to select the desired day.
5. Now you can associate the day/night
level to the desired time of the day.
6. Whenever / button is pressed,
the sun and moon symbols are alter-
natively activated (sun = day level;
moon = night level).
7. At the same time, close to the cur-
rent time (ashing bar) clock bar co-
mes on if the icon is on, and turns
off the icon is off.
8. Current time is indicated by both the
clock and the ashing bar.
9. Press CH +/- buttons to move inside
the different times of the day.
10. To program other days of the week
or to program zone 2 and water hea-
ter, press .
11. You will go back to the starting page.
Whatever part of the programme can be quit by pressing the button twice.
The procedure to program zone 2 and water heater, is very similar to the one followed to program zone 1.
Press the "prog" button to access, in sequence, to the following 4 programmes: manual; zone 1; zone 2; water heater.
If ambient probes are connected, the "day temperature" and the "night temperature" levels will acquire the temperature value, and
heating will be active until the temperature measured by the ambient probe reaches the preset value for the different time slots.
When no ambient probe is connected, the two day/night levels will acquire the on and off values.
Heating is ON in the selected periods with the icon, while it is OFF in the selected periods with the icon.
In case of connection with "Open Therm" Remote Control, that zone shall not be managed by boiler boards, as it will be directly ma-
naged by the remote control and, as a consequence, zone programming will be inhibited.

Instructions for the user
20
1.11 Parameter display
Press to scroll the different parameter values.
You can quit this function at any time by simply pressing the button.
To nd the meaning of all parameters, see TSP parameters on page 62.
Par. DESCRIPTION
P30 - TSP30 external temperature displayed (if an external probe is installed).
P31 Flow temperature is displayed.
P32 Calculated nominal ow temperature is displayed. If an external probe is not installed the ow temperature manually set on the boiler is displayed. If an external probe is installed the ow temperature automatically set by
the boiler on the basis of the thermoregulation curves is displayed.
P42 DHW temperature (for KC model).
P42 Displaying of domestic hot water temperature .
P43 Boiler return temperature displaying.
P44 Water heater temperature displaying (for KR/KRB models with installed water heater probe).
Cold water temperature (KC model only).
P45 Flue gas temperature displaying.
P46 Solar collector temperature is displayed (if optional solar collector probe is installed).
P47 Solar valve temperature display (if a solar valve is installed).
P48 Solar water heater temperature or solar valve temperature displaying (if the water heater probe or solar valve
probe are installed on additional solar board).
Tab. 1 Displayable parameters with info button
1.12 Failures that cannot be reset
The display shows the failure based on the corresponding error code (see Troubleshooting on page 92).
Some failures can be reset through the key, while some others are self-resettable (refer to the following paragraph).
If failures cannot be reset but are of the self-resettable type, no key will be enabled and only the LCD backlighting will be on.
As soon as the error cause is eliminated, the failure signal will disappear from the interface.
The interface is enabled and after 15 seconds is disabled, unless a button is pressed.
1.13 Resume boiler function
The display shows the failure based on the corresponding error code (see Troubleshooting on page 92).
Some failures can be reset through the key, while some others are self-resettable.
If shut-downs can be reset (E01, E02, E03, E40, E80, E86, E87), the reset key and the LCD backlighting will always be on.
The only active key you can press is the key.
When the reset key is pressed and boiler is under the correct conditions, the error is reset. The failure signal will disappear from the
interface.
The interface is enabled and after 15 seconds is disabled, unless a button is pressed.