FORMENTERA CTN RTN CTFS RTFS

Transcription

1 FORMENTERA CTN RTN CTFS RTFS IST 03 C INSTALLATION, USE AND MAINTENANCE EN

2 Dear Sirs, Thank You for choosing and buying one of our boilers. Please read these instructions carefully in oer to properly install, operate, and maintain the equipment. We inform users that: boilers shall be installed by an authorised company in full compliance with the prevailing standas; concerning the performed installation; 2

3 General notes for installers, 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 o shall keep it carefully to consult it enever necessary. This document shall be supplied together with the equipment in case the latter is sold or transferred to others. The equipment shall be installed in compliance with the prevailing standas and in accoance with the manufacturer s instructions specified in this manual: the manufacturer will not be held responsible for a wrong installation causing damages to persons, animals and/or property. 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 ich 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 specific waste management sites. The packages can be dangerous for children so keep them out of their reach. In the event of failure and/or faulty functioning, switch off the boiler. Do not attempt to make repairs: contact qualified 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. Appropriate maintenance will keep the boiler working in optimum conditions, ensuring environmental protection and total The user is strongly advised to have the boiler serviced and repaired by a qualified Authorised Service Centre. In the event of long periods of inactivity of the boiler, disconnect it from power mains and close the gas cock. Should there be a risk of freezing, add anti-freeze: it is not advisable to drain the system as this may result in damage; use specific anti-freeze products suitable for multi-metal heating systems. - do not turn on or off electric switches and do not turn on electric appliances; - do not ignite flames and do not smoke; - close the main gas cock; - open doors and windows; The boiler is designed for installation in the countries indicated on the technical data plate: installation in any other country 3

4 RAPID OPERATING INSTRUCTIONS The following instructions will help you to switch the boiler on quickly and regulate it for immediate use. This manual contains full details of how the boiler works, and full operating and safety instructions. Open the gas cock installed ahead of the boiler. Turn the master switch installed ahead of the boiler ON: the boiler display (fig. 1) turns on. If you do not wish to activate the heating function, press the operating mode selection button is displayed: only the DHW function will be enabled. until symbol If you wish to activate both the heating and DHW functions, press the operating mode selection button symbol is displayed. until If you do not wish to activate the DHW function, press the operating mode selection until symbol is displayed: this will activate the CH function only. button a few times To set the DHW water temperature press DHW +/- buttons (A, fig. 1). Set temperature as required. To set the heating water temperature, press heating water +/- buttons (B, fig. 1). Set temperature as required. 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 reset button (C, fig. 1). If boiler does not resume its normal operation after 3 attempts, contact a qualified Service Centre. 4

5 CONTENTS Warnings page 2 General notes for installers, maintenance technicians, and users page 3 Rapid operating instructions page 4... page Control panel... page Selecting the operating mode... page Adjusting heating and DHW temperature... page Parameter display... page Interpreting BOILER STATUS from LCD DISPLAY INDICATIONS... page Failures that cannot be reset... page Boiler reset... page Boiler operation... page Switching on... page CH function... page DHW function... page ANTIFREEZE function... page Flow anti-freeze function... page Plate DHW anti-freeze function... page Boiler anti-freeze function... page Anti-seize function... page Operation with external probe (optional)... page Operation with Remote Control (optional)... page Boiler shut-down... page Burner shut-down... page Shutdown due to overheating... page Shut-down due to incorrect air/flue gas system draught... page Shutdown due to too low system pressure... page Alarm due to temperature probe malfunction... page Alarm due to Remote Control (optional) connection malfunction... page Maintenance... page Notes for the user... page 18 page Technical features... page Dimensions... page Boiler layouts... page Operating data... page General characteristics... page 27 page Installation standas... page Installation... page Packaging... page Choosing ere to install the boiler... page Positioning the boiler... page Installing the boiler... page Boiler room ventilation... page Air intake/flue gas venting system for natural draught boilers... page Air intake/flue gas venting system for forced draught boilers... page Configuration of air intake and flue gas venting ducts... page Air intake and flue gas venting via 100/60 mm coaxial pipes... page Air intake and flue gas venting via 80 mm split pipes... page Checking combustion efficiency... page Flue cleaning function... page Measurement procedure... page Connection to gas mains... page Hydraulic connections... page Connection to the electrical mains... page Connection to ambient thermostat (optional)... page Installation and operation with Open Therm Remote Control (optional)... page Installation of the (optional) external probe and sliding temperature operation... page TSP parameters that can be set from interface or Remote Control... page Filling the system... page Starting up the boiler... page Preliminary checks... page Switching on and switching off... page Circulation pump flow resistance... page Wiring diagrams... page Model CTFS... page Model CTN... page Wiring diagram for forced circulation solar system with combi boiler... page Solar collector anti-freeze function... page Collector heat transfer function... page Boiler cooling function... page Solar mode operation and failure signal... page Wiring diagram for natural circulation solar system with combi boiler... page Model RTN... page Wiring diagram for forced circulation solar system with CH only boiler... page Model RTFS... page Multifunction relay setting diagrams... page Adaptation to other gas types and burner adjustment... page Switching from NATURAL GAS to LPG... page Switching from LPG to NATURAL GAS... page Gas valve setting... page Maximum heat output adjustment... page Minimum heat output adjustment... page Final settings... page 61 page Preliminary checks... page Switching on and switching off... page 63 page Maintenance schedule... page Combustion analysis... page 64 page 65 5

6 FIGURE INDEX fig. 1 - Control panel...page 7 fig. 2 - Filler cock...page 17 fig. 3 - CTN dimensions...page 20 fig. 4 - CTFS dimensions...page 21 fig. 5 - RTN dimensions...page 22 fig. 6 - RTFS dimensions...page 23 fig. 7 - CTN hydraulic diagram...page 24 fig. 8 - CTFS hydraulic diagram...page 24 fig. 9 - RTN hydraulic diagram...page 25 fig RTFS hydraulic diagram...page 25 fig Paper template...page 30 fig Connection to chimney for models CTN and RTN...page 32 fig Dimensions for connection of models CTN and RTN to flue gas duct...page 32 fig Coaxial kit 0KITCONC00...page 35 fig Air intake/flue gas venting via coaxial pipes CTFS...page 35 fig Dimensions for connection to coaxial air intake/flue gas duct CTFS...page 35 fig Splitter kit 0SDOPPIA11...page 36 fig Examples of combustion efficiency sampling points...page 38 fig Connection to gas mains...page 38 fig Thermoregulation curves...page 40 fig CTN/RTN and CTFS/RTFS 24 available head...page 45 fig CTFS/RTFS available head...page 46 fig CTFS wiring diagram...page 47 fig CTN wiring diagram...page 49 fig Wiring diagram for forced circulation solar system with combi boiler...page 50 fig Multifunction relay connecting diagram...page 51 fig Wiring diagram for natural circulation solar system with combi boiler...page 52 fig Multifunction relay wiring diagram...page 52 fig RTN wiring diagram...page 53 fig Wiring diagram for forced circulation solar system with CH only boiler...page 54 fig Multifunction relay wiring diagram...page 54 fig RTFS wiring diagram...page 55 fig Relay with Remote Control and TA2...page 57 fig Relay with interface programming and TA2...page 57 fig Relay with remote request (P17=1)...page 57 fig Relay with request (P17=3)...page 57 fig Relay with alarm signal (P17=0)...page 58 fig Casing removal...page 59 fig Expansion tank mounting bracket removal...page 59 fig Expansion tank bracket...page 60 fig Combustion chamber removal...page 61 fig Adaptation to other gas types - Gas valve modulation coil...page 62 fig Adaptation to other gas types - Pressure measurement point...page 62 fig Adaptation to other gas types - Gas valve setting...page 62 TABLE INDEX Table 1 - Displayable symbols on LCD display...page 7 Table 2 - Displayable parameters with info button...page 10 Table 3 - BOILER STATUS - LCD DISPLAY INDICATIONS during normal operation...page 10 Table 4 - BOILER STATUS - LCD INDICATIONS in the event of malfunction...page 11 Table 5 - CTN-RTN 24 adjustment rates...page 26 Table 6 - CTN-RTN 28 adjustment rates...page 26 Table 7 - CTFS-RTFS 24 adjustment rates...page 26 Table 8 - CTFS-RTFS 28 adjustment rates...page 26 Table 9 - CTFS-RTFS 32 adjustment rates...page 27 Table 10 - General specifications...page 27 Table 11 - Combustion specifications CTN-RTN 24...page 27 Table 12 - Combustion specifications CTN-RTN 24...page 27 Table 13 - Combustion specifications CTFS-RTFS 24...page 28 Table 14 - Combustion specifications CTFS-RTFS 28...page 28 Table 15 - Combustion specifications CTFS-RTFS 32...page 28 Table 16 - Configurable limits for TSP parameters and default values...page 41 Table 17 - Relationship between Temperature and Nominal resistance for temperature probes...page 58 Table 18 - P00 parameter setting...page 61 6

7 A B fig. 1 C D E Domestic hot water set buttons. Hot water for heating purposes and parameter set buttons. Buttons for alarm reset and back to the starting page during parameter selection. Parameter confirmation and information request button. Operating status selection button. To gain access to the interface, touch the display area. Once active, the interface enables all the keys. 15 seconds after the last key has been touched, the interface disables all the keys. 1 Percentage indication 2 Indication of parameter inside the parameter menu 3 Displaying of the number of parameters, or of the system pressure, or of the burner power percentage 4 Indication of system pressure measurement unit 5 Temperature, value, parameter and fault display. 6 Indication of the centigrade degrees. 7 A DHW request is active. 8 A CH request is active. Symbols for instantaneous DHW, heating. 9 Symbol ON = function enabled, OFF = function disabled. Set DHW temperature display. Display of set heating flow temperature. 10 Displaying of the calculated temperature setpoint 11 The solar pump or solar valve is active 12 Display of the flue cleaning function. 13 During parameter editing, the wrench symbol stays on until the set datum is confirmed. 14 Flame ON indication Table 1 - Displayable symbols on LCD display It indicates that you are entering the flue cleaning function. 7

8 Every time the operating status selection button (E, fig.1) is pressed, the SUMMER, WINTER, CH ONLY and OFF modes are enabled in sequence. At this stage, all buttons are enabled. When the SUMMER mode is enabled, only the DHW production function is active. When the mode is enabled, only the heating water production function is active. When the WINTER mode is enabled, both functions are active: DHW production and heating water production. When the OFF mode is enabled, no function is active. 8

9 Press the DHW +/- button (A, fig.1) to select the desired domestic hot water temperature. During selection, DHW icon (7, fig. 1) will flash. As soon as button is released, icon will continue flashing for approx. 3 seconds, and the DHW value will flash as well. After this time, value is stored and display standa operation will be restored. Press the CH +/- button (B, fig.1) to select the desired CH flow water temperature. During selection, CH icon (8, fig. 1) will flash. As soon as button is released, icon will continue flashing for approx. 3 seconds, and the CH water value will flash as well. After this time, value is stored and display standa operation will be restored. At this stage, all buttons are enabled. Press Info (D, fig.1) to scroll the different parameter values. You can quit this function at any time by simply pressing the Reset button (C, fig.1). Table 2 describes the meaning of all displayable parameters. 9

10 PARAMETERS P30 - TSP30 P31 P32 P42 P44 P46 DESCRIPTION External temperature displaying (if an external probe is present). Flow temperature displaying. Calculated nominal flow temperature displaying. If no external probe is installed, the flow temperature manually set on boiler will be displayed. If an external probe is installed, the flow temperature boiler calculated through the curves on figure 18 will be displayed. Domestic hot water temperature displaying (for CTN and CTFS models). Water cylinder temperature displaying (if the water cylinder probe is installed). Solar collector temperature displaying (if the collector probe is installed). P47 Table 2 - Displayable parameters with info button Solar valve temperature displaying (if the solar valve probe is installed). Normal operation Boiler switch in OFF mode No active function The flow water temperature is displayed SUMMER WINTER Boiler switch in SUMMER or WINTER mode (for CTFS / CTN models, only) The flow water temperature is displayed SUMMER WINTER The flow water temperature is displayed WINTER Boiler switch in SUMMER or WINTER mode The flow water temperature is displayed For RTN model with external water cylinder (optional), only Table 3 - BOILER STATUS - LCD DISPLAY INDICATIONS during normal operation 10 SUMMER WINTER

11 Malfunction No flame Triggering of double flow probe Triggering of flue gas thermostat (RTN / CTN) Triggering of air pressure switch (CTFS / RTFS) Insufficient system pressure Flow probe failure DHW probe failure (CTN / CTFS) Too high system pressure Boiler probe failure (RTN / RTFS with water cylinder, optional, equipped with NTC probe) SCS Solar collector probe failure (optional, if connected) SVS Solar valve probe failure (optional, if connected) SBS Solar water cylinder probe failure (optional, if connected) Remote Control connection failure (optional, if connected: this error appears only on the Remote Control display) Triggering of safety thermostat in mixed zone 2 (optional, if connected) Mixed zone flow probe 2 failure (optional, if connected) Mixed zone flow probe 3 failure (optional, if connected) Mixed zone flow probe 4 failure (optional, if connected) Communication failure with peripheral boas (optional, if connected: zone boa and solar boa) Hydraulic configuration not allowed Zone configuration error (optional, if connected: Remote Control and ambient thermostat) Pressure transducer fault Communication error between main boa and touch screen Safety system haware malfunction 11

12 Boiler type recognition failure (TN or TFS) Gas valve modulation coil fault Max. number of reset attempts from touch screen reached Max. number of reset attempts from Remote Control reached (optional, if connected) Table 4 - BOILER STATUS - LCD INDICATIONS in the event of malfunction 12

13 The display shows the failure based on the corresponding error code (table 4). Some failures can be reset through the reset button, ile some others are self-resettable. Refer to the following paragraph ( Boiler reset ). 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, this latter will be enabled and, 15 seconds after no key is touched, all the keys but the one around the LCD will be disabled. The display shows the failure based on the corresponding error code (table 4). Some failures can be reset through the reset key, ile some others are self-resettable. If shut-downs can be reset (E01, E02, E03) the reset key and the touch screen backlighting will always be on; the only active key that can be pressed is reset. 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, this latter will be enabled and, 15 seconds after no key is touched, all the keys but the one around the LCD will be disabled. 13

14 - Open the gas stop cock; - turn the master switch installed ahead of the boiler ON. The display turns on and indicates the function currently active (see tables 3 and 4); - select boiler operation mode by pressing the operating status selection button on the touch-screen (E, fig. 1): OFF, SUMMER, WINTER, CH ONLY (par. 1.2). - set desired CH temperature (see par ); - set desired DHW temperature (see par ); - set desired temperature on the (optional) ambient thermostat in the building. WARNING Set desired CH water temperature via heating +/- buttons (B, fig. 1). CH temperature may be set within a range from 35 C to 78 C. The waiting time between one boiler ignition and the following one, used to prevent boiler frequent turning on and off, ranges between 0 and 10 minutes (default value: 4 minutes), and can be edited with the P11 parameter. During temperature setting, the CH symbol (8, fig. 1) on the screen flashes and the CH current setting is displayed. When the central heating system requests heat from the boiler, the LCD displays the CH symbol (steady on) (8, fig. 1) and the current heating flow water temperature. The burner on symbol (14, fig. 1) only shows ile the burner is operating. Should water temperature in the system fall below set minimum value, between 35 C and 78 C (default value 40 C) to be edited with the P27 parameter, the waiting time is reset and the boiler re-ignites. Set desired DHW water temperature via DHW +/- buttons (A, fig. 1). The DHW production function is enabled on CTFS / CTN models and on RTFS / RTN models with external water cylinder (optional). Such function has always priority over CH water supply. For CTFS / CTN models, DHW temperature may be set within a range from 35 C to 57 C. During temperature setting, the DHW symbol (7, fig. 1) on the display flashes and the DHW setting is displayed. In RTN / RTFS models with external water cylinder (optional), water cylinder production of DHW can be enabled or disabled by pressing button Operating mode selection on the touch-screen (E, fig. 1). Water cylinder is enabled en boiler is in one of the following operating modes: SUMMER, WINTER. For RTN / RTFS models with external water cylinder (optional) with NTC probe (10 ß=3435; refer to water cylinder technical specifications), temperature range is between 35 C and 65 C. When setting temperature, the DHW symbol (7, fig. 1) will flash on the display and the DHW value being set will be shown. In RTN / RTFS models featuring an external water cylinder (optional) it is not possible to use a thermostat. A probe must be inserted in the boiler instead. This decision was made in oer to reduce gas consumption. In RTN / RTFS models featuring an external water cylinder (optional) fitted with a water cylinder probe (optional), once every 15 days the antilegionnaires disease function is activated: this consists in heating the water of the external cylinder up to 65 C for 30 minutes, regaless of all the other settings. The burner on symbol (14, fig. 1) only shows ile the burner is operating. 14

15 With CTFS and CTN models, available DHW litres per minute depend on boiler heat output and water mains supply temperature, accoing to the following formula: K l = DHW litres per min. = ΔT ere K is: for CTN 24 model for CTN 28 model for CTFS 24 model for CTFS 28 model for CTFS 32 model ΔT = hot water temperature cold water temperature For instance, with model CTFS 24, if the cold water is at 8 C and you want hot water at 38 C for a shower, the value of ΔT is: ΔT = 38 C - 8 C = 30 C and the number of DHW litres per minute available at 38 C is: 348 l = = 11.6 [litres per minute] (water mixed at cock) 30 This boiler is fitted with an anti-freeze protection system, ich works en the following functions are activated: OFF/SUMMER/WINTER/CH ONLY. The central heating system can be effectively protected against icing by using specific anti-freeze products that are suitable for multi-metal systems. In case burner cannot be ignited due to the lack of gas, the anti-freeze functions are anyway enabled through the circulation pumps. When the heating water temperature sensor detects a water temperature of 5 C, the boiler switches on and stays on at its minimum heat output until the temperature reaches 30 C or 15 minutes have elapsed. The pump continues to operate even if the boiler shuts down. On the CTFS / CTN models, the anti-freeze function also protects the DHW plant. When the DHW temperature sensor detects a temperature of 5 C, the boiler switches on and stays on at its minimum heat output until the temperature reaches 10 C or 15 minutes have elapsed (the deviating valve is in the DHW position). During the DHW anti-freeze operation the temperature detected by the flow probe is constantly checked, and in case it reaches 60 C the burner is switched off. The burner is switched on again if the operation request in anti-freeze mode is still present and the flow temperature is below 60 C. The pump continues to operate even if the boiler shuts down. In RTN / RTFS models featuring an external water cylinder (optional) for the production of DHW with a NTC type temperature sensor (10 ß=3435; refer to water cylinder technical specifications) the anti-freeze function also protects the water cylinder. When water cylinder temperature sensor detects a water temperature of 5 C, the boiler switches on and stays on at its minimum heating output until the temperature of the water cylinder water reaches 10 C or 15 minutes have elapsed. The pump continues to operate even if the boiler shuts down. During the boiler antifreeze operation the temperature detected by the flow probe is constantly checked, and in case it reaches 60 C the burner is switched off. The burner is switched on again if the operation request in anti-freeze mode is still present and the flow temperature is below 60 C. 15

16 If the boiler remains inactive and connected to the power mains, the circulation pump and the deviating valve will be shortly enabled every 24 hours so as to avoid any shut-down. The same applies to the relay ich can be freely programmed enever this latter is used to power a recirculation pump or a deviating valve. Boiler can be connected to a probe measuring the external temperature (optional - not compulsory, supplied by the manufacturer). Once the external temperature value is known, the boiler will automatically adjust the heating water temperature: increasing it as the external temperature decreases and decreasing it as the external temperature increases. This will both improve room comfort and reduce fuel consumption. This boiler operating mode is called sliding temperaturae operation. Heating water temperature varies based on a programme written inside boiler electronic microprocessor. but to edit calculated ambient temperature, namely the desired theoretical temperature. During temperature setting, the calculated ambient temperature symbol flashes on the display (10, fig. 1) and the value being set is shown. For curve optimal setting, a position close to 20 C is recommended. For further details on sliding temperature, refer to paragraph Only original external temperature probes supplied by the manufacturer must be used. Boiler interface includes all the possible functions of a Fondital Remote Control, and can control up to two heating zones. User can also connect the boiler to a Remote Control (optional - not compulsory, supplied by the manufacturer) so as to manage several boiler parameters, such as: - boiler status; - ambient temperature selection; - CH system water temperature; - DHW system water temperature; - CH system or external heater (optional) activation times programming; - boiler diagnostics display; - boiler reset and other parameters. For instructions on how to connect the Remote Control, refer to par and to its own instruction booklet. The boiler shuts down automatically if a malfunction occurs. Refer to Tables 3 and 4 to identify the boiler operating mode. To determine the possible causes of malfunction, see also paragraph 6. Troubleshooting section is at the end of this manual. Below is a list of kinds of shut-down and the procedure to follow in each. Fault code E01 is displayed flashing on the display in the event of burner shut-down due to missing flame. If this happens, proceed as follows: - check that the gas cock is open and light a kitchen gas ring for example to check the gas supply; - once having checked if the fuel is available, press the reset button to restore burner operation (C, fig. 1): if, after two starting attempts, the boiler still fails to start and enters the shut-down mode again, contact a Service Centre or qualified personnel for maintenance. If the burner shuts down frequently, there is a recurring malfunction, so contact a Service Centre or a qualified service engineer. In case of flow water overheating, the boiler shuts down and the E02 code will start flashing. Contact a Service Centre or a qualified service engineer to carry out the maintenance. In case of burner shut-down due to flue operation fault (CTN / RTN models) or intake/flue gas pipes (CTFS / RTFS models), flashing code E03 is displayed (flue gas thermostat or air pressure switch tripped). Contact a Service Centre or a qualified service engineer to carry out the maintenance. 16

17 If shut-down due to insufficient pressure in system error E04 starts flashing (indicating pressure transducer triggering), fill the system by opening the filler cock as shown in fig. 2 (models CTFS / CTN) or the cock on the cold water supply pipe (supplied with the boiler - model RTN / RTFS). E04 error is displayed en system pressure drops below 0.4 bar and error will be automatically reset as soon as system pressure reaches 1.0 bar. Water pressure must be bars ile the boiler is cold. In oer to restore water pressure, proceed as follows: - turn the filling cock (fig. 2) anticlockwise to allow water to enter the boiler (models CTFS / CTN) or, for models RTN / RTFS, open the cock on the cold water supply pipe; - keep the cock open until the control panel shows a value of 1 1,3 bar; - turn cock clockwise to close it (modela CTFS / CTN) or, for models RTN / RTFS, close the cock on the cold water supply pipe. If the boiler still fails to operate, contact a Service Centre or a qualified service engineer. Models CTN - CTFS Filler cock Models RTN - RTFS Filler cock (option, 0KITRUBI01) fig. 2 17

18 The following fault codes are shown on the display in the event of burner shut-down due to a temperature probe fault: - E05 for the CH flow probe. In this case the boiler does not work. - E06 for the DHW probe (CTFS / CTN models, only). In this case, the boiler works in central heating mode only, and the DHW function is disabled. - E12 for the water cylinder probe (RTN / RTFS model). In this case, the boiler works in central heating mode only, and the DHW function is disabled. In all cases, contact a Service Centre or a qualified engineer for maintenance. The boiler recognises ether or not there is a Remote Control (optional). If the boiler does not receive information from the Remote Control after the Remote Control itself is connected, the boiler attempts to re-establish communication for 60 seconds, after ich the fault code E31 is shown on the Remote Control display. The boiler will continue to operate accoing to the settings on the touch screen and ignore the Remote Control settings. Contact a Service Centre or a qualified service engineer to carry out the maintenance. The remote control can indicate faults or shut-down conditions and can also restore boiler operation after shut-down up to a maximum of 5 times. If the maximum number of attempts is reached, fault code E99 is shown on the boiler display. To reset error E99, disconnect and re-connect again boiler from/to power mains. The boiler must be serviced periodically as indicated in the relevant section of this manual. Appropriate boiler maintenance ensures efficient operation, environment preservation, and safety for people, animals and objects. The user is strongly advised to have the boiler serviced and repaired by a qualified Authorised Service Centre. For maintenance operations see section 5. Maintenance. Do not use water! The manufacturer shall not be held responsible for damage to people, animals, or property due to tampering with or improper 18

19 The boiler is equipped with an integrated gas atmospheric burner. All models are equipped with electronic ignition and ionisation flame sensing device. The following models are available: - CTN 24, 28: open chamber, natural draught boiler with electronic ignition for heating and instantaneous DHW supply ( kw); - RTN 24, 28: open chamber, natural draught boiler with electronic ignition for heating only ( kw); - CTFS 24, 28,32: sealed chamber, forced draught boiler with electronic ignition for heating and instantaneous DHW supply ( kw); - RTFS 24, 28, 32: sealed chamber, forced draught boiler with electronic ignition for heating only ( kw); The boilers meet local applicable Directives enforced in the country of destination, ich are stated on their rating plate. Installation in any other country may be a source of danger for people, animals and property. The key technical features of the boilers are listed below. Manufacturing characteristics - IPX5D electrically protected control panel. - Integrated, modulating electronic safety boa. - Electronic start-up with built-in igniter and ionisation flame detection. - Stainless steel, atmospheric burner that can run on several gases. - Mono-thermal, high performance, copper heat exchanger. - Twin shutter modulating gas valve. - 3-speed circulation pump with built-in air purging device. - Heating circuit pressure sensor. - CH temperature probe (all models) and DHW temperature probe (CTFS / CTN). - Flue gas thermostat (CTN / RTN). - Air pressure switch (CTFS / RTFS). - Integrated, automatic by-pass. - 7 litre expansion vessel. - Filler cock (CTN / CTFS) and drain cock (all models). - Stainless steel plate DHW heat exchanger (CTFS / CTN). - Motorised deviating valve (CTFS / CTN). - DHW priority flow switch (CTN / CTFS). User interface - Touch interface with built-in LCD to display and control boiler operating condition: OFF, RESET, WINTER, SUMMER and CH ONLY. - CH water temperature regulator: C. - DHW water temperature regulator (CTN / CTFS): C. Operating features - CH electronic flame modulation with timer-controlled rising ramp (60 seconds, adjustable). - Electronic flame modulation in DHW mode (CTFS / CTN; RTN / RTFS with external water cylinder - optional). - DHW priority function (CTFS / CTN; RTN / RTFS with external water cylinder - optional). - Flow anti-freeze function: ON 5 C; OFF 30 C or after 15 minutes of operation if CH temperature > 5 C. - DHW freeze protection function (CTFS / CTN): ON 5 C; OFF 10 C or after 15 minutes of operation if DHW temperature > 5 C. - Water cylinder anti-freeze function (RTN / RTFS + optional external water cylinder with NTC probe): ON 5 C; OFF 10 C or after 15 minutes of operation if water cylinder temperature > 5 C. - Timer-controlled flue cleaning function: 15 minutes. - Anti-legionaries disease function (RTN / RTFS + external water cylinder - optional); - CH Maximum heat input parameter adjustment. - Ignition heat input adjustment parameter. - Ignition flame propagation function. - CH thermostat timer: 240 seconds (adjustable). - Heating pump post-circulation function in CH, anti-freeze and flue cleaning modes: 30 seconds (adjustable). - DHW post-circulation function (CTFS / CTN; RTN / RTFS with external water cylinder - optional): 30 seconds. - Post-circulation function for heating temperature > 78 C: 30 seconds. - Post-ventilation function after working: 10 seconds. - Post-ventilation function for CH temperature > 95 C. - Circulation pump and deviating valve anti shut-down function: 30 seconds of operation after 24 hours of inactivity. - Ready for connection to an ambient thermostat. - Ready for operation with an external probe (optional, supplied by the manufacturer). - Ready for operation with an OpenTherm remote control (optional, supplied by the manufacturer). - Ready for operation with a module for different temperature zones. - Ready for integration with solar panels. - Anti- water hammer function: can be set from 0 to 3 seconds through parameter P15. 19

20 Model CTN AC G AF M R BOTTOM VIEW TOP VIEW AF G M AC R Cold water inlet Gas inlet CH system flow Hot water outlet CH system return fig. 3 20

21 Model CTFS AC G AF M R BOTTOM VIEW TOP VIEW AF G M AC R Cold water inlet Gas inlet CH system flow Hot water outlet CH system return fig. 4 21

22 Model RTN G AF M R BOTTOM VIEW TOP VIEW AF G M R Cold water inlet Gas inlet CH system flow CH system return fig. 5 22

23 Model RTFS G AF M R BOTTOM VIEW TOP VIEW AF G M R Cold water inlet Gas inlet CH system flow CH system return fig. 6 23

24 Model CTN Automatic by-pass 2. Domestic hot water temperature sensor 3. Motorised 3-way valve 4. Modulation gas valve 5. Burner 6. Flow temperature twin sensor 7. Ignition/detection electrode 8. Mono-thermal exchanger 9. Flue gas thermostat 10. Expansion vessel bar safety valve 12. Air purging device 13. Pressure transducer 14. Manual 3-speed circulation pump 15. DHW flow rate limiter 16. Filler cock 17. Cold water flow switch with filter 18. Secondary plate exchanger G M AC AF R Gas inlet CH flow DHW outlet Cold water inlet CH return fig. 7 M AC G AF R 18 Model CTFS Schema idraulico T fig M AC G AF R Automatic by-pass 2. Domestic hot water temperature sensor 3. Motorised 3-way valve 4. Modulation gas valve 5. Burner 6. Flow temperature twin sensor 7. Ignition/detection electrode 8. Mono-thermal exchanger 9. Sealed combustion chamber 10. Flue gas extractor fan 11. Flue gas circuit safety pressure switch 12. Pressure test point on flue gas duct 13. Air intake and flue gas venting pipe 14. Pressure test point on flue gas duct 15. Expansion vessel bar safety valve 17. Air purging device 18. Pressure transducer 19. Manual 3-speed circulation pump 20. Flow rate limiting device 21. Filler cock 22. Cold water flow switch with filter 23. Secondary plate exchanger G M AC AF R Gas inlet CH flow DHW outlet Cold water inlet CH return 24

25 Model RTN Automatic by-pass 2. Modulation gas valve 3. Burner 4. Flow temperature twin sensor 5. Ignition/detection electrode 6. Mono-thermal exchanger 7. Flue gas thermostat 8. Expansion tank 9. 3-bar safety valve 10. Air purging device 11. Pressure transducer 12. Manual 3-speed circulation pump G M AF R Gas inlet CH flow Cold water inlet CH return 1 M AF R fig. 9 Model RTFS Schema idraulico T Automatic by-pass 12. by-pass Modulation automatico gas valve 23. valvola Burner gas modulante 34. bruciatore Flow temperature twin sensor 45. doppio Ignition/detection sensore di temperatura electrode di mandata 56. elettrodo Mono-thermal di accensione exchanger e rilevazione 6 7. scambiatore Sealed combustion monotermico chamber 7 camera di combustione stagna 8. Flue gas extractor fan 8 ventilatore d estrazione fumi 9 9. pressostato Flue gas di circuit sicurezza safety circuito pressure fumi switch presa Pressure di pressione test circuito point on fumi flue gas duct condotto Air intake d aspirazione and flue aria gas e scarico venting fumi pipe presa Pressure di pressione test circuito point on fumi flue gas duct vaso Expansion d espansione vessel valvola 3-bar di sicurezza safety valve 3 bar disareatore Air purging device pressostati Pressure di minima transducer circolatore Manual 3 velocità 3-speed manuali circulation pump M CH flow G Gas inlet M AF mandata Cold riscaldamento water inlet G gas R CH return AF acqua fredda (da acquedotto) R ritorno riscaldamento fig. 10 M G AF R 25

26 Burner pressures reported in the following page must be verified after the boiler has been operating for 3 minutes. CTN-RTN 24 Gas type input [kw] Domestic hot water supply ΔT 45 C = 7.5 l/min Domestic hot water supply ΔT 40 C = 8.4 l/min Domestic hot water supply ΔT 35 C = 9.6 l/min output [kw] output [kw] Gas mains pressure [mbar] Nozzle diameter [mm/100] Domestic hot water supply ΔT 30 C = 11.2 l/min * Domestic hot water supply ΔT 25 C = 13.4 l/min * *Note: water mixed at cock Burner pressure [mbar] min. max. Natural gas G Butane Gas G Propane Gas G Table 5 - CTN-RTN 24 adjustment rates CTN-RTN 28 Gas type input [kw] Domestic hot water supply ΔT 45 C = 9,0 l/min Domestic hot water supply ΔT 40 C = 10.1 l/min Domestic hot water supply ΔT 35 C = 11.6 l/min output [kw] output [kw] Gas mains pressure [mbar] Nozzle diameter [mm/100] Domestic hot water supply ΔT 30 C = 13.5 l/min * Domestic hot water supply ΔT 25 C = 16.2 l/min * *Note: water mixed at cock Burner pressure [mbar] min. max. Natural gas G Butane Gas G Propane Gas G Table 6 - CTN-RTN 28 adjustment rates CTFS-RTFS 24 Gas type input [kw] output [kw] output [kw] Gas mains pressure [mbar] Nozzle diameter [mm/100] Burner pressure [mbar] min. max. Natural gas G Butane Gas G Propane Gas G Table 7 - CTFS-RTFS 24 adjustment rates Domestic hot water supply ΔT 45 C = 7.7 l/min Domestic hot water supply ΔT 40 C = 8.7 l/min Domestic hot water supply ΔT 35 C = 9.9 l/min Domestic hot water supply ΔT 30 C = 11.6 l/min * Domestic hot water supply ΔT 25 C = 13.9 l/min * *Note: water mixed at cock CTFS-RTFS 28 Gas type input [kw] Domestic hot water supply ΔT 45 C = 9.5 l/min Domestic hot water supply ΔT 40 C = 10.7 l/min Domestic hot water supply ΔT 35 C = 12.2 l/min output [kw] output [kw] Gas mains pressure [mbar] Nozzle diameter [mm/100] Domestic hot water supply ΔT 30 C = 14.2 l/min * Domestic hot water supply ΔT 25 C = 17.0 l/min * *Note: water mixed at cock Burner pressure [mbar] min. max. Natural gas G Butane Gas G Propane Gas G Table 8 - CTFS-RTFS 28 adjustment rates 26

27 CTFS-RTFS 32 Gas type input [kw] Domestic hot water supply ΔT 45 C = 10.1 l/min Domestic hot water supply ΔT 40 C = 11.3 l/min Domestic hot water supply ΔT 35 C = 12.9 l/min output [kw] output [kw] Gas mains pressure [mbar] Nozzle diameter [mm/100] Domestic hot water supply ΔT 30 C = 15.1 l/min * Domestic hot water supply ΔT 25 C = 18.1 l/min * *Note: water mixed at cock Burner pressure [mbar] min. max. Natural gas G Butane Gas G Propane Gas G Table 9 - CTFS-RTFS 32 adjustment rates MODEL CTN-RTN 24 CTN-RTN 28 CTFS-RTFS 24 CTFS-RTFS 28 CTFS-RTFS 32 Device category - II2H3+ II2H3+ II2H3+ II2H3+ II2H3+ Burner nozzles no Minimum CH system pressure bar Maximum CH system pressure bar DHW circuit min. pressure bar DHW circuit max. pressure bar DHW specific flow rate (Δt 30K) l/min Electric power Supply - Voltage - Frequency V - Hz Power mains supply fuse A Maximum power consumption W Electric protection rating IP X5D X5D X5D X5D X5D Net weight kg Natural gas consumption at maximum CH output (*) m 3 /h Butane gas consumption at maximum CH output kg/h Propane gas consumption at maximum CH output kg/h Maximum CH working temperature C Maximum DHW working temperature C 62 (models CTN-CTFS); 65 (RTN-RTFS with external optional cylinder) Total capacity of expansion vessel l Maximum recommended system capacity (**) l Table 10 - General specifications (*) Value referred to 15 C mbar (**) Maximum water temperature 83 C, expansion vessel pressure 1 bar CTN-RTN 24 30% load Casing heat loss % Flue system heat loss with burner on % Flue system mass capacity g/s Flue gas temp. air temp. C CO 2 value % Boiler efficiency rating % Efficiency rating (accoing to 92/42/EC) - NO x emission class - 2 Table 11 - Combustion specifications CTN-RTN 24 CTN-RTN 28 30% load Casing heat loss % Flue system heat loss with burner on % Flue system mass capacity g/s Flue gas temp. air temp. C CO 2 value % Boiler efficiency rating % Efficiency rating (accoing to 92/42/EC) - NO x emission class - 2 Table 12 - Combustion specifications CTN-RTN 24 27

28 CTFS-RTFS 24 30% load Casing heat loss % Flue system heat loss with burner on % Flue system mass capacity g/s Flue gas temp. air temp. C CO 2 value % Boiler efficiency rating % Efficiency rating (accoing to 92/42/EC) - NO x emission class - 3 Table 13 - Combustion specifications CTFS-RTFS 24 CTFS-RTFS 28 30% load Casing heat loss % Flue system heat loss with burner on % Flue system mass capacity g/s Flue gas temp. air temp. C CO 2 value % Boiler efficiency rating % Efficiency rating (accoing to 92/42/EC) - NO x emission class - 3 Table 14 - Combustion specifications CTFS-RTFS 28 CTFS-RTFS 32 30% load Casing heat loss % Flue system heat loss with burner on % Flue system mass capacity g/s Flue gas temp. air temp. C CO 2 value % Boiler efficiency rating % Efficiency rating (accoing to 92/42/EC) - NO x emission class - 3 Table 15- Combustion specifications CTFS-RTFS 32 28

29 This is an II2H3+ category boiler and must be installed in compliance with the laws and standas in force in the country of installation, ich are herein considered as entirely transcribed. Boiler is shipped in a stuy caboa box. Remove boiler from caboa box and check its integrity. The packing materials can be recycled. Disposal must be managed via appropriate waste collection sites. Keep packaging out of reach of children, as it may be dangerous. The manufacturer shall not be held responsible in case of damage to people, animals, or property due to failure in following the above mentioned information. Packaging includes: - the hydraulic kit with copper pipes for boiler connection to gas mains, to the heating system and the DHW system (CTFS / CTN only); - a wall bracket; - a bag containing: a) boiler installation, use and maintenance manual; b) the template for mounting boiler on a wall (fig. 11); c) 2 screws and relevant wall blocks for fixing the boiler to the wall; d) for CTFS / RTFS 24 models, four diaphragms for flue gas vent (diameter 39.8; 42; 45; 49 mm); e) for CTFS / RTFS 28 models, four diaphragms for flue gas vent (diameter 39; 41; 45; 47 mm) and one air intake diaphragm (diameter 55.5 mm); f) for CTFS / RTFS 32 models, six diaphragms for flue gas vent (diameter da 39.8; 41; 44; 45; 47 and 49 mm) and one air intake diaphragm (diameter 55.5 mm); g) for model CTFS / RTFS, two blanking caps with gaskets. The following must be taken into account en choosing ere to install the boiler: - instructions from section Air intake and flue gas venting system and relevant sub paragraphs; - check the wall for stuiness, avoiding weak areas; - do not install the boiler over appliances ich may affect boiler operation (e.g. cookers, ich produce steam and grease, washing machines etc.); Each boiler is supplied with a paper template (fig. 11), found inside the packaging. Said template ensures that the pipes connected to the central heating system, the domestic hot water system, the gas mains, and the air intake/flue gas venting pipes are all laid out correctly during the realisation of the water system and before installation of the boiler. The template is made of heavy-duty paper, it is to be affixed to the wall ere the boiler is to be mounted using a carpenter s level. It provides all the indications required to drill the boiler mounting holes to the wall, procedure ich is done using two screws and wall blocks. Template bottom allows marking the correct point ere fittings must be for connecting the gas supply pipe, cold water supply pipe, hot water outflow pipe, heating flow and return pipes. The upper area of the template shows ere air intake and flue gas ducts are to be positioned. Since the temperature of the walls on ich the boiler is mounted and external temperature of coaxial air/flue gas system do For boilers with split air intake and flue gas venting ducts, in the case of proximity with flammable walls and passages through 29

30 DIMACAR19 fig

31 - Before commissioning a NEW system, clean it to remove any metal chips due to machining and welding, and any oil and grease The manufacturer shall not be held responsible in case of damage to people, animals, or property due to failure to follow the In oer to install the boiler proceed as follows: - secure the template (fig. 11) to the wall; - drill two Ø 12 mm holes in the wall to accommodate the boiler bracket wall blocks; - if necessary, provide holes in the wall to allow air intake and/or flue gas venting pipes to pass through it; - secure the supporting bracket to the wall using the blocks supplied with the boiler; - position the connections for the gas mains pipe (G), the cold water inlet pipe (F), the hot water outlet pipe (C, CTFS and CTN models only), the heating flow pipe (M) and return pipe (R), as indicated at the bottom of the template; - provide a system for relieving the 3-bar safety valve; - hook boiler to supporting bracket; - connect the boiler to mains pipes by means of the coupling kit supplied with the boiler (refer to paragraphs and ); - provide a system for relieving the 3-bar safety valve; - connect the boiler to the air intake and flue gas venting system (see paragraphs and and relevant sub-paragraphs); - connect electric power supply, ambient thermostat (en available) and other available accessories (refer to the following paragraphs). Natural draught boilers (models CTN and RTN) have an open combustion chamber and are designed for connection to a chimney: combustion air is drawn directly from the room ere the boiler is installed. Forced draught boilers (models CTFS and RTFS) have a sealed combustion chamber and do not draw combustion air from the room ere the boiler is installed, so no specific indications are applicable regaing ventilation openings for combustion air and boiler room requirements. The boiler must be installed in a room that is compliant with the legislation and standas in force in the country of installation, Flue gas discharge into the atmosphere and air intake/flue gas venting systems must comply with applicable laws and standas in the country of installation that are considered as fully transcribed herein. Should an air/flue gas system malfunction occur, the safety device will shut-down the boiler and the LCD will display the E03 Should the boiler repeatedly shut-down, it is necessary to have air/flue gas system ducts inspected, as they might be obstructed the boiler, or due to non-observance of the instructions provided by the manufacturer or of legislation and standas applicable for the When positioning the boiler exhaust terminals onto the wall, comply with the distances specified in the applicable standas and regulations in force in the Country of installation, ich are herein considered as entirely transcribed. 31

32 Slope min. 3 % Slope min. 3 % fig. 12 Connecting to the chimney The chimney is indispensable for correct boiler operation; it must therefore comply with the following requirements: - it must be made of waterproof material and be resistant to flue gas temperature and related condensate; - it must have appropriate mechanical characteristics and low thermal conductivity; - it must be perfectly sealed; - it must be as vertical as possible and the roof terminal is to have a cap ensuring efficient and constant flue gas exhaustion; - the chimney diameter is not to be less wide than the boiler flue gas outlet diameter; squared or rectangular section chimneys must bear an internal section, 10% larger than the section connected to the boiler draught excluder device; - starting from the boiler, the duct connecting to the chimney is to follow a vertical direction and must be long not less than twice its diameter before joining the chimney fig. 13 Direct emission into the atmosphere Natural draught boilers can vent flue gas directly into the atmosphere via a duct ich goes through the outside walls of the building and ends with an anti-wind gust device terminal. The flue gas exhaust duct is to comply with the following requirements: - its sub-horizontal part inside the building must be as short as possible (not longer than 1,000 mm); - it is not to have more than 2 direction changes; - it can host only one single boiler flue gas exhaust system; - its section, ich is passing through the wall is to be protected by a sheath duct; the part of the sheath duct facing the inside of the building is to be sealed, ile the part facing outwas is to be left open; - its end section, on ich the terminal is to installed, is to protrude from the wall of the building for a length of a least twice the diameter of the duct; - the terminal must be no less than 1.5 meters above the connection for the flue gas venting duct on the boiler (see fig. 12). When positioning the boiler flue gas venting pipe terminals onto the wall, comply with the distances specified in the applicable standas and regulations in force in the Country of installation. 32

33 type B22 type C12 and flue gas venting ducts Type B22 The flue must not be fitted with draught excluder devices, ile a ventilator device must be installed downstream of the combustion chamber/heat exchanger. Type C12 Boiler intended for connection to horizontal outlet and intake ducts connected to the outside by means of coaxial or split ducts. The minimum distance between the air intake duct and the flue gas venting duct must be at least 250 mm (see figure opposite), ereas both terminals must be contained within a square measuring 500 x 500mm. Type C32 Boiler intended for connection to vertical outlet and intake ducts connected to the outside by means of coaxial or split ducts. The minimum distance between the air intake duct and the flue gas venting duct must be at least 250 mm (see figure opposite), ereas both terminals must be contained within a square measuring 500 x 500mm. Type C42 Boiler intended for connection to collective chimney pipe system that includes two ducts, air intake and flue gas exhaustion. These ducts may be coaxial or split. The chimney must be compliant with applicable legislation and standas. Type C52 Boiler with separate pipes for combustion air intake and flue gas evacuation. These flues may discharge in areas at a different pressure. The terminals may not face each other from opposed walls. type C32 type C42 type C52 Type C82 Boiler intended to be connected to combustion air terminal and to a single flue gas terminal or collective chimney. The chimney must be compliant with applicable legislation and standas. type C82 33

34 Type C12 - Type C32 CTFS / RTFS 24 The minimum permissible length of horizontal coaxial pipes is 0.5 metres, including the first elbow connected to the boiler. The maximum permissible length of horizontal coaxial pipes is 6 metres, including the first elbow connected to the boiler. For each additional elbow the maximum permissible length must be reduced by 1 meter. The duct is to be tilted down by 1% towa its outlet, to prevent rain water from entering the boiler. With wall-mounted terminal, maximum permissible length is to be reduced by 1 meter. Minimum permissible length for vertical coaxial pipes is 1 metre, equal to the length of the chimney. Maximum permissible length for vertical coaxial pipes is 6 metres, including the chimney. For each additional elbow the maximum permissible length must be reduced by 1 meter. With roof terminal, maximum permissible length is to be reduced by 1.5 meters. Pipe length Diameter of flue gas vent diaphragm 0.5 < L < 2* Ø < L < 3* Ø 42 3 < L < 4* Ø 45 4 < L < 5* Ø 49 5 < L < 6* - * including the first elbow for Type C12 CTFS / RTFS 28 The minimum permissible length of horizontal coaxial pipes is 0.5 metres, including the first elbow connected to the boiler. The maximum permissible length of horizontal coaxial pipes is 7 metres, including the first elbow connected to the boiler. For each additional elbow the maximum permissible length must be reduced by 1 meter. The duct is to be tilted down by 1% towa its outlet, to prevent rain water from entering the boiler. With wall-mounted terminal, maximum permissible length is to be reduced by 1 meter. Minimum permissible length for vertical coaxial pipes is 1 metre, equal to the length of the chimney. Maximum permissible length for vertical coaxial pipes is 7 metres, including the chimney. For each additional elbow the maximum permissible length must be reduced by 1 meter. With roof terminal, maximum permissible length is to be reduced by 1.5 meters. Pipe length Diameter of flue gas vent diaphragm 0.5 < L < 2* Ø 39 2 < L < 4* Ø 41 4 < L < 6* Ø 47 6 < L < 7* - * including the first elbow for Type C12 CTFS / RTFS 32 The minimum permissible length of horizontal coaxial pipes is 0.5 metres, including the first elbow connected to the boiler. The maximum permissible length of horizontal coaxial pipes is 5 metres, including the first elbow connected to the boiler. For each additional elbow the maximum permissible length must be reduced by 1 meter. The duct is to be tilted down by 1% towa its outlet, to prevent rain water from entering the boiler. With wall-mounted terminal, maximum permissible length is to be reduced by 1 meter. Minimum permissible length for vertical coaxial pipes is 1 metre, equal to the length of the chimney. Maximum permissible length for vertical coaxial pipes is 5 metres, including the chimney. For each additional elbow the maximum permissible length must be reduced by 1 meter. With roof terminal, maximum permissible length is to be reduced by 1.5 meters. Pipe length Diameter of flue gas vent diaphragm 0,5 < L < 2* Ø 39,8 2 < L < 3* Ø 41 3 < L < 4* Ø 44 4 < L < 5* Ø 47 * including the first elbow for Type C12 34

35 0KITCONC00 ENDCAP ENDCAP COAXIAL PIPE 1 METRE LONG NEOPRENE GASKET fig. 14 BLANKING CAP NEOPRENE GASKET NEOPRENE GASKET NEOPRENE GASKET fig fig

36 pipes 0KITCONC00 C42 - C52- C82 installation category For all systems with separate air intake and flue gas vent pipes, the suitable standa split pipe kit (0SDOPPIA11) must be used, it includes the following parts (fig. 17): - a female flanged stub pipe Ø 80 mm for connecting flue gas vent pipe; - a female flanged stub pipe Ø 80 mm for connecting air intake pipe; - a standa deflector; - retaining screws and seals/gaskets. FLUE GAS VENT STUB PIPE GASKET AIR INTAKE STUB PIPE AIR- INTAKE GASKET If the original standa split pipe kit is not used, fig. 17 RETAINING SCREWS AIR DEFLECTOR Air intake CTFS / RTFS 24 Minimum permissible length of air intake pipe is 1 meter. Each wide radius 90 air-intake elbow (R=D) is equivalent to a 0.8 metre long straight pipe section. Each narrow radius 90 air-intake elbow (R=D) is equivalent to a 1.7 metre long straight pipe section. Every air intake pipe length of one metre is equivalent to a 0.6 metre long straight pipe section. Every split pipe chimney at intake is equivalent to a 4.2 metre long straight pipe section. Air intake pipe flow resistance shall not be considered. Pipe length Diameter of flue gas vent diaphragm 1 < L < 3 Ø < L < 14 Ø < L < 26 Ø < L < 34 Ø < L < 42 - Flue gas vent CTFS / RTFS 24 Each wide radius 90 elbow (R=D) in flue gas vent equals a 1.4 m long straight pipe section. Each narrow radius 90 elbow (R<D) in flue gas vent equals a 2.8 m long straight pipe section. Every flue gas vent pipe length of one metre is equivalent to a 1.0 metre long straight pipe section. Every split pipe chimney at glue gas vent is equivalent to a 5.7 metre long straight pipe section. Air intake CTFS / RTFS 28 Minimum permissible length of air intake pipe is 1 meter. Each wide radius 90 air-intake elbow (R=D) is equivalent to a 0.8 metre long straight pipe section. Each narrow radius 90 air-intake elbow (R=D) is equivalent to a 1.7 metre long straight pipe section. Every air intake pipe length of one metre is equivalent to a 0.6 metre long straight pipe section. Every split pipe chimney at intake is equivalent to a 4.3 metre long straight pipe section. Air intake pipe flow resistance shall not be considered. Pipe length Diameter of flue gas vent diaphragm Diameter of intake diaphragm 1 < L < 18 Ø 45 Ø < L < 23 Ø 47 Ø 55.5 Flue gas vent CTFS / RTFS 28 Each wide radius 90 elbow (R=D) in flue gas vent equals a 1.4 m long straight pipe section. Each narrow radius 90 elbow (R<D) in flue gas vent equals a 2.8 m long straight pipe section. Every flue gas vent pipe length of one metre is equivalent to a 1.0 metre long straight pipe section. Every split pipe chimney at glue gas vent is equivalent to a 5.9 metre long straight pipe section. 36

37 Air intake CTFS / RTFS 32 Minimum permissible length of air intake pipe is 1 meter. Each wide radius 90 air-intake elbow (R=D) is equivalent to a 0.8 metre long straight pipe section. Each narrow radius 90 air-intake elbow (R=D) is equivalent to a 1.7 metre long straight pipe section. Every air intake pipe length of one metre is equivalent to a 0.6 metre long straight pipe section. Every split pipe chimney at intake is equivalent to a 4.2 metre long straight pipe section. Air intake pipe flow resistance shall not be considered. Pipe length Diameter of flue gas vent diaphragm Diameter of intake diaphragm 1 < L < 5 Ø 44 Ø < L < 12 Ø 45 Ø < L < 19 Ø 47 Ø < L < 25 Ø 49 Ø 55.5 Flue gas vent CTFS / RTFS 32 Each wide radius 90 elbow (R=D) in flue gas vent equals a 1.4 m long straight pipe section. Each narrow radius 90 elbow (R<D) in flue gas vent equals a 2.8 m long straight pipe section. Every flue gas vent pipe length of one metre is equivalent to a 1.0 metre long straight pipe section. Every split pipe chimney at glue gas vent is equivalent to a 5.9 metre long straight pipe section. The boiler features a flue cleaning function ich must be used to measure combustion efficiency during operation and to adjust the burner. To enable the flue cleaning function, press the reset key (C, fig. 1) and keep it pressed for 5 seconds. When the flue cleaning function is activated with the boiler in WINTER mode, and ambient thermostat ON (if installed), the boiler performs the ignition sequence and then operates at a fixed power output ich corresponds to the one set through parameter P95. The flue cleaning symbol steady on (12, fig. 1), the flame symbol on (14, fig. 1) - if burner is on - and gas valve modulation coil input current value indicate that the flue cleaning function is active. The keys active in this function are: reset (C, fig. 1) and DHW +/- (A, fig. 1). The flue cleaning function lasts 15 minutes. To quit flue cleaning function, press reset and you will go back to the standa operating mode. Use DHW +/- buttons (A, fig. 1) to change current input to gas valve modulation coil through the available range, from a minimum value (parameter P96) to a maximum value (parameter P95) automatically set accoing to boiler type. The display shows the wrench symbol (13, fig. 1) to warn user that parameter is being modified, the flue cleaning symbol (12, fig. 1), the gas valve modulation coil input current value and the flame on symbol (14, fig. 1) if burner is on. 37

38 Coaxial pipe system In oer to verify combustion efficiency the following measurements must be implemented: - assess combustion air from opening 2 (fig. 18 A). - assess flue gas temperature and CO 2 from opening 1 (fig. 18 A). Allow boiler to reach working temperature before taking any measurement. Split pipe system In oer to verify combustion efficiency the following measurements must be implemented: - assess combustion air from opening 2 (fig. 18 B). - assess flue gas temperature and CO 2 from opening 1 (fig. 18 B). Allow boiler to reach working temperature before taking any measurement. fig. 18 Gas supply pipe cross-section must be equal or greater than boiler gas pipe. Cross-section gas pipe size depends on its length, layout pattern, gas flow rate. Gas pipe size is to be selected accoingly. Comply with installation standas enforced in the country ere the boiler is installed ich are considered as fully transcribed in this Remember that before operating an indoor gas distribution system and before connecting it to a meter, it must be checked for fig. 19 Gasket Prior to installing the boiler, the hydraulic system is to be cleaned in oer to remove impurities; they could be present in system components and damage the pump and the heat exchanger. The CH outlet and return pipes must be connected to the respective 3/4 connectors M and R on the boiler (fig. 11). When calculating the cross section of CH system pipes, bear in mind load losses induced by radiators, thermostatic valves, radiator gate valves, and the configuration of the system itself. 38 Cold water inlet and DHW outlet shall be connected to the boiler through the special 1/2 C and F fittings (fig. 11). Haness of water supplied to the boiler may increase the plate heat exchanger cleaning/replacement intervals. Depending on the haness of the mains water supply, ascertain ether or not to install appropriate domestic water treatment systems using water treatment products suitable for drinking water and compliant with the standas in force in the country of

39 The boiler is supplied with a three-poled power cable, already connected to the electronic boa and it is provided with a safety clamp. The boiler is to be connected to a 230V-50Hz electrical power supply. Installation standas must be complied with and they are herein considered as entirely transcribed. An easily accessible two-poled switch, with a minimum 3 mm distance between contacts, is to be installed ahead of the boiler. The switch is to allow power supply cut-off in oer to safely perform maintenance and service procedures. Power supply to the boiler must be fitted with a residual-current circuit breaker having suitable disconnection capacity. Electric power supply must be properly earthed. The above mentioned safety measure must be verified. If in doubt, ask a qualified technician to thoroughly check the power network. The manufacturer cannot be held responsible for any damage caused by failure to ground the system correctly: The boiler is designed to be connected to an ambient thermostat (optional, not compulsory). Ambient thermostat contacts must be properly sized in compliance with a load of 5 ma at 24 Vdc. Ambient thermostat cables shall be connected to electronic boa pins 1 and 2 (fig. 23, 24 and 29), after having eliminated the jumper supplied as a standa with the boiler. The boiler may be connected to an Open Therm Remote Control (non-compulsory optional accessory supplied by manufacturer). The correct operation of the Remote Control itself and of the boiler is not guaranteed if non original Remote Control units not To install the Remote Control, refer to the instructions provided with the Remote Control itself. Please note the following precautions en installing the Remote Control: - the remote control wiring must not be grouped together in the same sheath as the power cables: if the cables are sheathed together, electrical interference from the power cables may compromise the functions of the Remote Control; - the Remote Control must be installed on an indoor wall at a height of approximately 1.5 m from the floor and in a suitable location for measuring ambient temperature: do not install in recess or corners, behind doors or curtains, and install away from heat sources, direct sunlight, air draughts and water sprays. The Remote Control connector is protected against inverted polarity, and the connections may be inverted. For complete instructions on how to program the Remote Control, refer to the instruction manual included in the Remote Control kit. Boa and Remote Control communicate in each operating mode: OFF, SUMMER, WINTER, CH ONLY; as for the operating mode, boiler display layout corresponds to the setting made from the Remote Control. The boiler can be connected to an (optional) external temperature probe (optional, provided by the manufacturer) for sliding temperature operation. The external temperature probe must be connected by means of a double insulated wire, minimum cross-section 0.35 sq.mm. The external probe must be connected to pins 5-6 of boiler electronic boa (fig. 23, 24 and 29). The temperature probe must be installed on an outside wall facing NORTH - NORTH EAST, in a position protected from weather. Do not install near a window, ventilation openings or sources of heat. 39

40 The external temperature probe automatically modifies the CH flow temperature in relation to: - the external temperature measured; - the thermoregulation curve selected; - the calculated ambient temperature selected. The calculated ambient temperature is set using CH + and - keys (B, fig. 1) that, with the external temperature probe installed, no longer work to set the CH water temperature (see paragraph ) and the set value can be read on the boiler display. The external temperature value detected by the external probe can be displayed through boiler P30 parameter. 1- With installed external probe, press CH +/- buttons (B, fig. 1) to set calculated ambient temperature. As soon as CH +/- buttons are released, ambient temperature icon will continue flashing for approx. 3 seconds, and the calculated ambient temperature value will flash as well. 2- After this time, value is stored and display standa operation is restored. Figure 20 shows the curves for a calculated ambient temperature of 20 C. Parameter P10 allows selecting the curve value shown in fig. 20. If calculated ambient temperature value is edited on boiler display, the curves shift up or down, respectively, by the same amount. s With a calculated ambient temperature setting of 20 C, for example, if you select the curve corresponding to parameter 1 and the external temperature is - 4 C, the CH flow temperature will be 50 C C Flow temperature [ C] , fig. 20 C External temperature [ C] 40

41 Parameter Settable values Default values Notes P0 - TSP0 Boiler power selection = 24 kw LPG; 1 = 24 kw natural gas; 2 = 28 kw LPG; 3 = 28 kw natural gas; 4 = 32 kw LPG; 5 = 32 kw natural gas. P3 - TSP3 Boiler type selection = combined instantaneous; 2 = heating only; 3 = with water heater P6 - TSP6 Ignition power setting P7 - TSP7 Heating power maximum setting P10 - TSP10 Heating output curves P11 - TSP11 Heating thermostat timing P12 - TSP12 CH power rising ramp timer P13 - TSP13 Timing of post-circulation, heating, anti-freeze, flue cleaning P14 - TSP14 Setting of "solar" DHW thermostats P15 - TSP15 Anti water hammer delay P16 - TSP16 Ambient thermostat reading delay / Remote Control P17 - TSP17 Multifunction relay setting Solar par. (with P17=2 or with supplementary boa) P18 - TSP18 Solar system selection P19 - TSP19 Water heater set-point setting P20 - TSP20 ΔT ON (diff. solar pump ignition) P21 - TSP21 ΔT OFF (diff. solar pump shut-down) P22 - TSP22 Maximum collector temperature P23 - TSP23 Minimum collector temperature P24 - TSP24 Solar collector anti-freeze P25 - TSP25 Solar load forcing P26 - TSP26 Enabling of water heater cooling P27 - TSP27 Heating timer reset temperature P28 - TSP28 Hydraulic selection for deviating valve relay control P29 - TSP29 Default parameter setting (except P00, P01, P02, P17, P28) P30 External temperature P31 Flow temperature P32 Nominal calculated flow temperature P33 Set point of zone 2 flow temperature P34 Current zone 2 flow temperature Display only % (min-max) 0 % % 100% With P6=0 ignition with ramp With P6 0 ignition at the set power (P6=1 minimum power P6=100 maximum power) 0 3 1,5 resolution min min sec sec sec = normal 1 = solar 0 = shut-down and fault; 1 = requested by the ambient thermostat 1/Remote Control; 2 = solar; 3 = request by the ambient thermostat = solar valve; 1 = solar pump C 60 C 1 30 C 6 C 1 30 C 3 C C 120 C 0 95 C 25 C only with P18 = 1 0 = anti-freeze not enabled; 1 = anti-freeze enabled (only with P18 = 1) = automatic operation; 1 = always enabled C 40 C 0 = disabled; 1 = enabled (only with P18 = 1) = recirculating pump + deviating valve; 1 = double pump = user's parameters 1 = default parameters only with external probe connected only with external probe connected only with at least one zone boa connected only with at least one zone boa connected 41

42 Parameter Settable values Default values Notes P36 Set point of zone 3 flow temperature P37 Current zone 3 flow temperature P39 Set point of zone 4 flow temperature P40 Current zone 4 flow temperature P42 Plate DHW temperature P44 Water cylinder temperature (RTFS/RTN - with water cylinder probe) P46 Solar collector temperature (if solar collector probe is connected to the boiler) P47 Temperature of water heater or solar valve from boiler P48 Temperature of water heater or solar valve from solar boa P49 Ambient probe 1 (SA1) temperature P50 Ambient probe 2 (SA2) temperature P51 SA1 ambient probe triggering differential OFF P52 SA1 ambient probe triggering differential ON P53 Ambient probe SA1 correction range P54 SA2 ambient probe triggering differential OFF P55 SA2 ambient probe triggering differential ON P56 Ambient probe SA2 correction range P57 Type of modulation with connected ambient probes (only with P61 set between 03 and 07) P58 Ambient probe weight during modulation Display only P59 Type of temperature visualization on display P60 Number of additional boas connected P61 Association between remote and ambient thermostats P62 Selection of zone 2 curve P63 Zone 2 set-point P66 Selection of zone 3 curve P67 Zone 3 set-point P70 Selection of zone 4 curve only with at least two zone boas connected only with at least two zone boas connected only with three zone boas connected only with three zone boas connected only with water cylinder probe connected only with solar collector probe connected only with water heater probe or solar valve connected as above, but only with solar boa connected only with connected ambient probe only with connected ambient probe C 0.0 C only with connected ambient probe C -0.5 C only with connected ambient probe C 0.0 C only with connected ambient probe C 0.0 C only with connected ambient probe C -0.5 C only with connected ambient probe C 0.0 C only with connected ambient probe = on/off; 1 = ambient probe modulation; 2 = external probe modulation; 3 = ambient probe and external probe modulation; 4 = no ambient probe connected C 8 C used for thermoregulation with P57= = flow temp.; 1 = SA1 probe temp.; 2 = SA2 probe temp.; 3 = external temp.; 4 = water heater temp.; 5 = solar coll. temp.; 6 = solar valve temp.; 7 = solar valve temp. from solar boa Maximum 4 boas (3 zone + 1 solar) = remote zone 2 / TA2 zone 1; 01 = TA1 zone 2 / TA2 zone 1; 02 = TA2 zone 2 / remote zone 1; 03 = SA1 zone 1 / TA2 zone 2; 04 = SA1 zone1 / SA2 zone 2; 05 = remote zone 1 / SA2 zone 2; 06 = zone 1 not managed / SA2 zone 2; 07 = TA1 zone 1 / SA2 zone only with zone boa connected C 20 C only with zone boa connected only with two zone boas connected C 20 C only with two zone boas connected only with three zone boas connected 42

43 Parameter Settable values Default values Notes P71 Zone 4 set-point P74 Low temperature zone mixer valve opening time P75 Rise in nominal boiler temperature with zone boa P76 Thermal discharge enabling with solar boa P78 Interface back-lighting switching on P80 Multifunction relay forcing P81 Zone 2 pump relay forcing P82 Zone 2 mixing valve forcing P84 Zone 3 pump relay forcing P85 Zone 3 mixing valve forcing P87 Zone 4 pump relay forcing P88 Zone 4 mixing valve forcing P91 Solar boa relay forcing P92 Solar boa valve relay forcing P95 Modulator maximum current P96 Modulator minimum current System check Table 16 - General table of TSP parameters C 20 C only with three zone boas connected sec. 140 sec. only with zone boas connected 0 35 C 5 C only with zone boas connected = disabled; 1 = enabled = standa; 1 = LCD always on; 2 = LCD and keys always on = standa function; 1 = relay excited = standa function; 1 = relay excited = standa function; 1 = force in opening; 2 = force in closing = standa function; 1 = relay excited = standa function; 1 = force in opening; 2 = force in closing = standa function; 1 = relay excited = standa function; 1 = force in opening; 2 = force in closing = standa function; 1 = relay excited mA 0 170mA depending on P0 value depending on P0 value 0 = standa function; 1 = force in opening; 2 = force in closing resolution 1% resolution 1% 43

44 Once all boiler connections have been completed, CH system can be filled. The procedure is to be cautiously carried out, following each step: - open the air purging valves on all radiators and verify the boiler automatic valve operation; - gradually open the relevant filler cock (fig. 2 for models CTN and CTFS, or the cock on the cold water supply pipe for models RTN and RTFS), checking any automatic bleeding valves installed in the system properly work; - close all radiator air purging valves as soon as water starts coming out; - check boiler water pressure gauge not to exceed bars reading; - shut the filler cock (for models CTN and CTFS, or the cock on the cold water supply pipe for models RTN and RTFS) and bleed any air out again, by opening the air bleeding valves on radiators; - start the boiler and bring the system to working temperature, stop the pump, and repeat air bleeding procedure; - allow the system to cool and restore water pressure to bars. WARNING WARNING for models CTN and CTFS, or the cock on the cold water supply pipe for models RTN and RTFS) WARNING following procedure: - unscrew the protective cap at the centre of the pump motor; - put a screwdriver into the hole and manually rotate the circulation pump shaft clockwise; Before starting the boiler, check that: - the flue gas venting duct and the relevant terminal are installed in conformity with the instructions: with the boiler operating, there must be no leakage of combustion by-products from any of the gaskets; - the supply power to the boiler must be 230 V 50 Hz; - the system is correctly filled with water (pressure gauge reading 1 to 1.3 bar); - any shut-off cocks in the system pipes are open; - the mains gas type is correct for the boiler calibration: convert the boiler to the available gas if necessary (see section 3.7. Adaptation to other gas types): have this operation carried out by qualified technical personnel; - the gas supply cock is open; - there are no fuel gas leaks; - the main switch installed ahead of the boiler is turned on; - the 3-bar safety valve is not stuck; - there are no water leaks; - the pump has not seized. WARNING To switch the boiler on and off, refer to the Instructions for the User. 44

45 700 MODEL CTN-RTN Available head [ mbar] Flow rate [l/h] 700 MODEL CTN-RTN Available head [ mbar] Flow rate [l/h] 600 MODEL CTFS-RTFS 24 Available head [ mbar] Flow rate [l/h] fig

46 600 MODEL CTFS-RTFS 28 Available head [ mbar] Flow rate [l/h] 600 MODEL CTFS-RTFS 32 Available head [ mbar] Flow rate [l/h] fig

47 IN GND OUT SCHEMA ELETTRICO DI CONNESSIONE or A Sonda Sonda Sonda Sonda Ext. Boll. caldaia Boll. solare Coll. Solare TA2 OT o TA1 comunicazione con esterno Contatto Contatto TA1 TA2 o Open-Therm GND 485A 485B +5V relè liberamente programmabile N Fn.c. F n.a. 230V a.c bn bn bu bu bu bu or bu bn BACK 0SCHEINT01 QUATOUCH01 Conn_F RETRO 0SCHEINT01 QUATOUCH01 CN_J SR1 SR2 Conn_E CN_E CN_H X14 JP1 CN_C CN_B CN_C or or APS Conn_C FL DK or bu vl vl gy gy bn bn CN_A CN_A 0SCHEMOD28 CN_M CN_J CN_D CN_D bn bn bu bu SS SRT CN_N ACC1 CN_L CN_L E CN_I 1 5 bu bn bu bn ygn X7 X6 X5 X4 X3 X2 X2 ygn CN_I 7 1 CN_N CN_M N bu X4 bu bn bn bu ygn bu ygn X5 bn Risc. Sanit. bn P X3 VG MDV fig. 23 V Connection wiring diagram A Solar water Solar External Sonda Boiler Sonda water cylinder Sonda collector Sonda probe Ext. cylinder Boll. caldaia probe Connect. Boll. probe solare Coll. probe Solare TA2 OT OT or o TA1 comunicazione External communication con esterno Contact Contatto Contatto TA1 Contact TA2 o TA1 or Open-Therm OpenTherm GND 485A 485B +5V relè liberamente Relay ich can be freely programmed programmabile coφ=1 N Fn.c. F n.a. 230V a.c bn bn bu bu bu bu or bu bn 47

48 INTERNAL CONNECTIONS DK : PRESSURE TRANSDUCER FL : FLOW SWITCH SS : DHW OUT NTC PROBE 10k Ohm at 25 C B=3435 SRT : RETURN NTC PROBE 10k Ohm at 25 C B=3435 SR1-SR2 : CH NTC PROBE 10k Ohm at 25 C B=3435 (DOUBLE) APS : AIR PRESSURE SWITCH VG : GAS VALVE WITH MODULATION COIL P : BOILER CIRCULATION PUMP MDV : ELECTRIC DEVIATING VALVE E : IGNITION/FLAME DETECTION ELECTRODE V : FAN : ELECTRONIC BOARD : TOUCH SCREEN INTERFACE CN_A-CN_M : LOAD/SIGNAL CONNECTORS X2-X7 : GROUND CONNECTORS CODES OF WIRING 0CABESTO19: signal wiring 0SCHEMOD27 - rest of boiler (probes, fan, pump signal) and first part of terminal box 0CABCOMP16: 230V load wiring 0CABESTO02: power cable + prog. relay wiring 0CABESTO04: 24V power wiring between 0SCHEMOD27 and 0SCHEINT00 0CABESTO08: RS485 wiring with terminals for communication with external units : red : ite bu: blue : black gy: grey : pink bn: brown vl: violet or: orange ygn: yellow/green 48

49 IN GND OUT bl bl SCHEMA ELETTRICO DI CONNESSIONE bl or TA2 OT o TA1 Sonda Sonda sonda sonda Ext. Boll. caldaia Boll. solare Coll. Solare TA comunicazione con esterno Contatto Contatto TA1 TA2 o Open-Therm GND 485A 485B +5V relè liberamente programmabile N Fn.c. F n.a. 230V a.c bw bw or bw BACK 0SCHEINT01 QUATOUCH01 Conn_F RETRO 0SCHEINT01 QUATOUCH01 CN_J SR1 SR2 Conn_E CN_E CN_H X14 JP1 CN_C CN_B CN_C or or TF Conn_C FL DK or bu gy gy CN_A CN_A 0SCHEMOD28 CN_M CN_J CN_D CN_D bw bw bl bl SS CN_N ACC1 CN_L CN_L E CN_I 1 5 bl bw bl bw ygn X7 X6 X5 X4 X3 X2 X2 ygn CN_I 7 1 CN_M N bl X4 bw bl bw bl Risc. Sanit. ygn P X3 VG MDV Connection wiring diagram fig. 24 Connect. Relay relè ich liberamente can freely TA2 OT or o TA1 Solar water Solar External Sonda Boiler Sonda water sonda sonda programmed programmabile coφ=1 cylinder collector probe Ext. cylinder Boll. caldaia probe Boll. probe solare Coll. probe Solare N Fn.c. F n.a. External TA communication comunicazione con esterno Contatto Contact Contatto TA1 Contact TA2 o TA1 or Open-Therm OpenTherm GND 485A 485B +5V 230V a.c w w h h k k d d bl h k w l A A k k 49

50 INTERNAL CONNECTIONS DK : PRESSURE TRANSDUCER FL : FLOW SWITCH SS : DHW OUT NTC PROBE 10k Ohm at 25 C B=3435 SRT : RETURN NTC PROBE 10k Ohm at 25 C B=3435 SR1-SR2 : CH NTC PROBE 10k Ohm at 25 C B=3435 (DOUBLE) TF : FLUE GAS THERMOSTAT VG : GAS VALVE WITH MODULATION COIL P : BOILER CIRCULATION PUMP MDV : ELECTRIC DEVIATING VALVE E : IGNITION/FLAME DETECTION ELECTRODE : ELECTRONIC BOARD : TOUCH SCREEN INTERFACE CN_A-CN_M : LOAD/SIGNAL CONNECTORS X2-X7 : GROUND CONNECTORS : red : ite bl: blue : black gy: grey : pink bw: brown vl: violet or: orange ygn: yellow/green Parameter setting P03 P17 P FORMENTERA CTFS CTFS / CTN CTN 24 SONDA SOLAR COLLETTORE COLLECTOR SOLARE PROBE EXTERNAL SONDA ESTERNA PROBE TERMOSTATO AMBIENT THERMOSTAT AMBIENTE TERMINALS MORSETTI MORSETTI TERMINALS MORSETTI TERMINALS TERMINALS MORSETTI KITSOLC07 T MORSETTI TERMINALS SONDA BOLLITORE SOLAR SOLARE WATER CYLINDER PROBE fig. 25 DOMESTIC RETE IDRICAWATER SYSTEM 50

51 Multifunction relay connecting diagram fig. 26 Solar collector anti-freeze function is enabled by setting parameter P24 = 1. With this function, solar pump is activated as soon as solar collector probe detects a temperature of 4 C. This function prevents that solar collectors in stagnation state are exposed to high thermal stresses. With the boiler in SUMMER, WINTER or CH ONLY mode, if the temperature read by solar collector probe is between 110 C and 115 C (editable with parameter P22) and the temperature measured by the solar water cylinder probe is below 93 C, solar pump is enabled to fill water cylinder. Solar pump operation is disabled as soon as solar collector temperature goes below 108 C or solar water cylinder probe detects a temperature above 95 C. This function consists in cooling water cylinder down to the temperature value set by the user by transferring excess heat from the water cylinder to the solar collector. With the boiler in SUMMER, WINTER or CH ONLY mode, if water cylinder temperature is 2 C higher than set-point temperature and collector probe temperature is 6 C lower than solar water cylinder probe temperature (editable with parameter P20), solar pump is enabled to cool water cylinder. Function is interrupted as soon as water cylinder temperature reaches the set-point value set by the user, or en solar collector probe temperature is 3 C lower than solar water cylinder probe temperature (editable with parameter P21). Function can be disabled with parameter P26 (P26 = 1 enabled; P26 = 0 disabled). When solar pump is active, symbol (11, fig.1) appears on the display. If solar collector probe or solar water cylinder probe are faulty, error codes E24 and E28 will be displayed, respectively. Solar pump will be turned off. 51

52 Parameter setting P03 P17 P FORMENTERA CTFS CTFS CTN / 24 CTN EXTERNAL PROBE SONDA ESTERNA AMBIENT TERMOSTATO THERMOSTAT AMBIENTE TERMINALS 3-4 MORSETTI 3-4 TERMINALS 5-6 MORSETTI 5-6 TERMINALS MORSETTI SOLAR DEVIATING VALVE VALVOLA DEVIATRICE SOLARE M TERMINALS MORSETTI SONDA BOLLITORE SOLAR WATER SOLARE CYLINDER PROBE fig. 27 DOMESTIC RETE WATER IDRICA SYSTEM Multifunction relay connecting diagram Double effect valve Single effect valve X: neutral Y: to boiler Z: to collector X: neutral Z: to collector fig

53 IN GND OUT SCHEMA ELETTRICO DI CONNESSIONE or R Ponticello A TA2 OT o TA1 Sonda Ext. Contatto Contatto TA1 TA2 o Open-Therm Sonda Boll. caldaia Sonda Boll. solare Sonda Coll. Solare relè liberamente TB programmabile N Fn.c. F n.a. comunicazione Valvola Contatto con periferiche motorizzata Termostato a ritorno Bollitore automatico GND 485A 485B +5V 230V a.c bw bw bl bl bw bw bl bw bl or l BACK 0SCHEINT01 RETRO 0SCHEINT01 Conn_F CN_J SM1 SM2 Conn_E CN_E CN_H X14 JP1 CN_C CN_B CN_C or or TF Conn_C DK or bl CN_A CN_A 0SCHEMOD28 CN_M CN_J CN_D CN_D bn bn bu bu F bw RISC. bl ACC1 CN_L CN_L E CN_I CN_M 1 5 bl ygn X7 X6 X5 X4 X3 X2 X2 ygn CN_I X4 7 1 bl bw bw bl ygn P X3 VG Connection wiring diagram fig. 29 A Connect. TA2 OT o or TA1 TA1 External Sonda probe Ext. Contatto Contact Contatto TA1 TA2 Contact o TA1 or Open-Therm OpenTherm Boiler water cylinder Sonda Boll. probe caldaia Solar water cylinder Sonda Boll. probe solare Solar collector Sonda Coll. probe Solare TB Water Contatto cylinder Termostato thermostat Bollitore contact Valvola Motorised motorizzata valve with a automatic ritorno automatico return Communication with comunicazione peripherals con periferiche relè liberamente Relay ich can be freely programmed programmabile coφ=1 N Fn.c. F n.a. GND 485A 485B +5V 230V a.c 53

54 INTERNAL CONNECTIONS DK : PRESSURE TRANSDUCER SR1-SR2 : CH NTC PROBE 10k Ohm at 25 C B=3435 (DOUBLE) TF : FLUE GAS THERMOSTAT TB : WATER CYLINDER THERMOSTAT VG : GAS VALVE WITH MODULATION COIL P : BOILER CIRCULATION PUMP R : 10 KOhm 1/4 Watt RESISTOR VRA : AUTOMATIC RETURN VALVE E : IGNITION/FLAME DETECTION ELECTRODE : ELECTRONIC BOARD CN_A-CN_M : LOAD/SIGNAL CONNECTORS X2-X7 : GROUND CONNECTORS : red : ite bl: blue : black gy: grey : pink bw: brown vl: violet or: orange ygn: yellow/green Parameter setting P03 P17 P FORMENTERA FORMENTERA RTFS RTN / 24 RTN EXTERNAL PROBE SONDA ESTERNA AMBIENT THERMOSTAT TERMOSTATO AMBIENTE MORSETTI TERMINALS 3-4 TERMINALS MORSETTI MORSETTI TERMINALS TERMINALS TERMINALS 7-8 MORSETTI 7-8 MORSETTI BOILER WATER CYLINDER SONDA BOLLITORE CALDAIA PROBE TERMINALS MORSETTI M MORSETTI 9-10 TERMINALS 9-10 SOLAR WATER SONDA BOLLITORE CYLINDER SOLARE PROBE fig. 30 DOMESTIC RETE IDRICA WATER SYSTEM Multifunction relay connecting diagram 54 fig. 31

55 V TA1 VRA ALARM A 0CREMOTO04 PSOL TA2 18 Sext SBC SBS SCS TB ER bw bl bl bw bw bl bl bl or l HEATING F GND 485A 485B +5V C N NC NO QUATOUCH04 (view 0QATOUCH04 from the back) (vista da dietro) Conn_F DK IN GND OUT or bl CN_A CN_E CN_H CN_A CHEM X14 D2 CN_J CN_M JP1 CN_J CN_C CN_B CN_D CN_C CN_D or or bn bn bu bu PV 1 SM1 P 2 3 SM2 or Conn_E Conn_C E ACC1 CN_I CN_N CN_L RISC. bl F bw CN_M CN_L 1 5 bl ygn X7 X6 X5 X4 X3 X2 X2 X4 ygn CN_I X3 X5 CN_N 7 1 bu bn bn bu ygn bl ygn bw P 230V - 50Hz VG N SCHEMA ELETTRICO DI CONNESSIONE fig. 32 Connection wiring diagram 55

56 INTERNAL CONNECTIONS DK : PRESSURE TRANSDUCER SM1-SM2 : CH PROBE 10k Ohm at 25 C B=3435 PV : FLUE GAS PRESSURE SWITCH VG : GAS VALVE WITH MODULATION COIL P : BOILER CIRCULATION PUMP R : RESISTOR KΩ 1/4 WATT VRA : AUTOMATIC RETURN VALVE E : IGNITION/FLAME DETECTION ELECTRODE : ELECTRONIC BOARD CN_A-CN_M : LOAD/SIGNAL CONNECTORS X2-X7 : GROUND CONNECTORS ER : REMOTE CONTROL SOLENOID VALVE PSOL : SOLAR PUMP ALARM : ALARM-SIGNALLING LIGHT : red : ite bu: blue : black gy: grey : pink bn: brown vl: violet or: orange ygn: yellow/green 56

57 The control panel features a multifunction relay, to be set through the parameter P17 - TSP17 Relay with remote control and TA2 Relay with interface programming and TA2 fig. 33 fig. 34 TA circulator TA circulator Remote control solenoid valve Remote control solenoid valve Solenoid valve with limit switch Solenoid valve with limit switch fig. 35 fig

58 REMOTE CONTROL OR BOILER INTERFACE fig. 37 P17 Error signalling relay 0 Relay controlled by TA1 or by the remote control 1 Relay controlled by TA2 or by the interface Table 17 - Relationship between Temperature and Nominal resistance for temperature probes 58

59 - Disconnect the boiler from the electric power supply. - Remove boiler outer front panel, as described in fig. 38. fig Remove the front panel of the combustion chamber, and remove expansion tank as shown in fig. 39 and 40; fig.39 A B 59

60 C D E fig

61 - Remove the front part of combustion chamber as shown in fig. 41; fig Remove the main burner; - Remove nozzles from main burner replacing them by new gas type correct diameter ones. WARNING! the copper gaskets must be installed; - Reinstall the main burner; - Modify parameter P00 value accoing to boiler power, following table 18. Default Parameter P00 24 kw LPG 0 24 kw Natural gas 1 28 kw LPG 2 28 kw Natural gas 3 tab P00 parameter setting 1- To modify parameter P00 it is necessary to press reset and operating mode keys at the same time, for three seconds. 2- Parameters can be scrolled by pressing CH +/- buttons. As soon as you reach the one to be modified, press ok. The wrench symbol turns on and indicates you can edit the parameter value. 3 - The parameter value can be edited using CH + and - buttons. If you quit using the reset button, the parameter will not save changes and remain set to previous value. To confirm modification you must press ok. - Adjust the gas valve (see next paragraph, ). 61

62 - Disconnect the boiler from the electric power supply. - Remove boiler outer front panel, as described in fig. 38; - Remove the front panel of the combustion chamber, and remove expansion tank as shown in fig. 39 and 40; - Remove the front part of combustion chamber as shown in fig. 41; - Remove the main burner; - Remove nozzles from main burner replacing them by new gas type correct diameter ones. WARNING! the copper gaskets must be installed; - Reinstall the main burner; - Modify parameter P00 value accoing to boiler power, following table Adjust the gas valve (see next paragraph, ). - check flow pressure value (see tables 5, 6, 7 and 8 Adjustment rates ); - remove the plastic cover C (fig. 39) at the top of the modulation coil, protecting the pressure regulator adjuster screws; - connect a pressure gauge to pressure measurement point V as in figure 43; - select the WINTER mode on the control panel pressing key n times until symbol is displayed; - start the flue cleaning function by keeping key pressed until symbol stops flashing. Boiler switches to max. output operation; - turn nut K (external, fig. 41) CLOCKWISE to increase the pressure at nozzles, turn COUNTER CLOCKWISE to decrease it; - for LPG operation, turn brass nut K fully CLOCKWISE. - disconnect modulation coil from electric wiring (M, fig. 43); - switch on the burner and check that the MINIMUM pressure value matches the value indicated in tables 5, 6, 7 and 8 Adjustment rates ; - adjust pressure as follows: hold nut K with a 10 mm wrench, then turn screw W CLOCKWISE to increase pressure, COUNTER CLOCKWISE to decrease it (fig. 44); - reconnect electric wiring to modulation coil. - After quitting flue cleaning function (see par ), make sure that burner ignites correctly and without noise; - measure the minimum and maximum gas valve pressures again; - adjust as necessary; - refit plastic cover C; - close gas pressure measurement points; - check for gas leaks. C M V W K fig. 42 fig. 43 fig