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Fondital FORMENTERA CTN 24 Installation, Use And Maintenance Manual
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Fondital FORMENTERA CTN 24 Installation, Use And Maintenance Manual

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FORMENTERA
CTN 24 - 28
RTN 24 - 28
CTFS 24 - 28 - 32
RTFS 24 - 28 - 32
INSTALLATION, USE AND MAINTENANCE
EN

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Summary of Contents for Fondital FORMENTERA CTN 24

  • Page 1 FORMENTERA CTN 24 - 28 RTN 24 - 28 CTFS 24 - 28 - 32 RTFS 24 - 28 - 32 INSTALLATION, USE AND MAINTENANCE...
  • Page 2 Dear Sirs, Thank You for choosing and buying one of our boilers. Please read these instructions carefully in order 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 standards; concerning the performed installation;...
  • Page 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 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.
  • Page 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.

  • Page 5: Table Of Contents

    CONTENTS Warnings page 2 General notes for installers, maintenance technicians, and users page 3 Rapid operating instructions page 4 .................................................... page 7 1.1 - Control panel ....................................................page 7 1.2. Selecting the operating mode ..............................................page 8 1.3. Adjusting heating and DHW temperature ..........................................page 9 1.4.
  • Page 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.
  • Page 7 fig. 1 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.
  • Page 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.
  • Page 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 standard operation will be restored.
  • Page 10 PARAMETERS DESCRIPTION P30 - TSP30 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.
  • Page 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)
  • Page 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...
  • Page 13 The display shows the failure based on the corresponding error code (table 4). Some failures can be reset through the “reset” button, while 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.

  • Page 14: Warnings

    - 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.
  • Page 15 With CTFS and CTN models, available DHW litres per minute depend on boiler heat output and water mains supply temperature, according to the following formula: l = DHW litres per min. = -------- ΔT where K is: - 336 for CTN 24 model - 405 for CTN 28 model - 348 for CTFS 24 model - 426 for CTFS 28 model...
  • Page 16 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;...

  • Page 17: Control Panel

    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).

  • Page 18: Boiler Operation

    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.
  • Page 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 (23.1-27.4 kW); - RTN 24, 28: open chamber, natural draught boiler with electronic ignition for heating only (23.1-27.4 kW);...
  • Page 20 Model CTN 76 60 62 67 82 73 BOTTOM VIEW TOP VIEW Cold water inlet Gas inlet CH system flow Hot water outlet CH system return fig. 3...
  • Page 21 Model CTFS 76 60 62 67 82 73 BOTTOM VIEW TOP VIEW Cold water inlet Gas inlet CH system flow Hot water outlet CH system return fig. 4...
  • Page 22 Model RTN 76 122 67 82 73 BOTTOM VIEW TOP VIEW Cold water inlet Gas inlet CH system flow CH system return fig. 5...
  • Page 23 Model RTFS BOTTOM VIEW TOP VIEW Cold water inlet Gas inlet CH system flow CH system return fig. 6...
  • Page 24 Model CTN Automatic by-pass Domestic hot water temperature sensor Motorised 3-way valve Modulation gas valve Burner Flow temperature twin sensor Ignition/detection electrode Mono-thermal exchanger Flue gas thermostat Expansion vessel 3-bar safety valve Air purging device Pressure transducer Manual 3-speed circulation pump DHW flow rate limiter Filler cock Cold water flow switch with filter...
  • Page 25 Model RTN Automatic by-pass Modulation gas valve Burner Flow temperature twin sensor Ignition/detection electrode Mono-thermal exchanger Flue gas thermostat Expansion tank 3-bar safety valve Air purging device Pressure transducer Manual 3-speed circulation pump Gas inlet CH flow Cold water inlet CH return AF R fig.
  • Page 26 Burner pressures reported in the following page must be verified after the boiler has been operating for 3 minutes. CTN-RTN 24 Burner pressure Nozzle diameter Gas type input Gas mains pressure [mbar] output output [mbar] [mm/100] [kW] [kW] [kW] min. max.
  • Page 27 CTFS-RTFS 32 Burner pressure Nozzle diameter Gas type input output output Gas mains pressure [mbar] [mbar] [mm/100] [kW] [kW] [kW] min. max. Natural gas G20 33.0 30.8 14.3 1.35 11.1 Butane Gas G30 33.0 30.8 14.3 0.78 28.7 Propane Gas G31 33.0 30.8 14.3...
  • Page 28 CTFS-RTFS 24 30% load Casing heat loss 1.05 0.63 Flue system heat loss with burner on 5.97 10.37 Flue system mass capacity 15.44 16.38 Flue gas temp. – air temp. °C value Boiler efficiency rating 93.0 89.0 90.2 Efficiency rating (according to 92/42/EC) emission class Table 13 - Combustion specifications CTFS-RTFS 24 CTFS-RTFS 28...
  • Page 29 This is an II2H3+ category boiler and must be installed in compliance with the laws and standards in force in the country of installation, which are herein considered as entirely transcribed. Boiler is shipped in a sturdy cardboard box. Remove boiler from cardboard box and check its integrity. The packing materials can be recycled.
  • Page 30 fig. 11...
  • Page 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 order to install the boiler proceed as follows: - secure the template (fig.
  • Page 32 Slope Slope min. 3 % min. 3 % fig. 12 Connecting to the chimney The chimney is indispensable for correct boiler operation; it must 130 0 therefore comply with the following requirements: - it must be made of waterproof material and be resistant to flue gas temperature and related condensate;...
  • Page 33 type type type and flue gas venting ducts Type B22 The flue must not be fitted with draught excluder devices, while 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.
  • Page 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.
  • Page 35 0KITCONC00 ENDCAP ENDCAP COAXIAL PIPE 1 METRE LONG NEOPRENE GASKET fig. 14 NEOPRENE GASKET BLANKING CAP NEOPRENE GASKET NEOPRENE GASKET fig. 15 fig. 16...
  • Page 36 pipes 0KITCONC00 C42 - C52- C82 installation category AIR INTAKE STUB PIPE For all systems with separate air intake and flue gas vent pipes, the suitable standard split pipe kit (0SDOPPIA11) must be used, it includes the following parts (fig. 17): AIR- INTAKE FLUE GAS VENT STUB - a female flanged stub pipe Ø...
  • Page 37 Air intake CTFS / RTFS 32 Pipe length Diameter of Diameter Minimum permissible length of air intake pipe is 1 meter. flue gas vent of intake Each wide radius 90° air-intake elbow (R=D) is equivalent to a 0.8 metre long straight diaphragm diaphragm pipe section.
  • Page 38 Coaxial pipe system In order 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 from opening 1 (fig. 18 A). Allow boiler to reach working temperature before taking any measurement. Split pipe system In order to verify combustion efficiency the following measurements must be implemented: - assess combustion air from opening 2 (fig.
  • Page 39 The boiler is supplied with a three-poled power cable, already connected to the electronic board and it is provided with a safety clamp. The boiler is to be connected to a 230V-50Hz electrical power supply. Installation standards 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.
  • Page 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 1.8.6.) and the set value can be read on the boiler display.
  • Page 41 Parameter Settable values Default values Notes P0 - TSP0 0 = 24 kW LPG; 1 = 24 kW natural gas; 2 = 28 kW LPG; 0 ÷ 5 Boiler power selection 3 = 28 kW natural gas; 4 = 32 kW LPG; 5 = 32 kW natural gas. P3 - TSP3 1 = combined instantaneous;...
  • Page 42 Parameter Settable values Default values Notes only with at least two zone boards connected Set point of zone 3 flow temperature only with at least two zone boards connected Current zone 3 flow temperature only with three zone boards connected Set point of zone 4 flow temperature only with three zone boards connected Current zone 4 flow temperature...

  • Page 43: Switching On

    Parameter Settable values Default values Notes 15 ÷ 35 °C 20 °C only with three zone boards connected Zone 4 set-point 0 ÷ 300 sec. 140 sec. only with zone boards connected Low temperature zone mixer valve opening time 0 ÷ 35 °C 5 °C only with zone boards connected Rise in nominal boiler temperature with zone board...
  • Page 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;...
  • Page 45 MODEL CTN-RTN 24 1000 1200 1400 Flow rate [l/h] MODEL CTN-RTN 28 1000 1200 1400 Flow rate [l/h] MODEL CTFS-RTFS 24 1000 1200 1400 Flow rate [l/h] fig. 21...
  • Page 46 MODEL CTFS-RTFS 28 1000 1200 1400 Flow rate [l/h] MODEL CTFS-RTFS 32 1000 1200 1400 Flow rate [l/h] fig. 22...
  • Page 47 relè liberamente Sonda Sonda programmabile Sonda Sonda Coll. Solare Boll. caldaia Boll. solare n.c. n.a. OT o TA1 comunicazione con esterno Contatto TA1 Contatto 230V a.c 485A 485B Open-Therm bn bn wh wh pk pk rd rd bu bu bu bu bu bn bk BACK 0SCHEINT01...
  • Page 48 INTERNAL CONNECTIONS CODES OF WIRING : PRESSURE TRANSDUCER 0CABESTO19: signal wiring 0SCHEMOD27 - rest of boiler (probes, fan, pump : FLOW SWITCH signal) and first part of terminal box : DHW OUT NTC PROBE 10k Ohm at 25°C B=3435 0CABCOMP16: 230V load wiring : RETURN NTC PROBE 10k Ohm at 25°C B=3435 0CABESTO02: power cable + prog.

  • Page 49: Connection Wiring Diagram

    relè liberamente OT o TA1 Sonda programmabile sonda Sonda sonda Coll. Solare Boll. caldaia Boll. solare n.c. n.a. comunicazione con esterno Contatto TA1 Contatto 230V a.c 485A 485B Open-Therm BACK 0SCHEINT01 QUATOUCH01 RETRO 0SCHEINT01 QUATOUCH01 Conn_F CN_J Conn_E CN_C CN_C CN_E Conn_C CN_H...
  • Page 50 INTERNAL CONNECTIONS : PRESSURE TRANSDUCER rd: red : FLOW SWITCH wh: white : DHW OUT NTC PROBE 10k Ohm at 25°C B=3435 bl: blue : RETURN NTC PROBE 10k Ohm at 25°C B=3435 bk: black SR1-SR2 : CH NTC PROBE 10k Ohm at 25°C B=3435 (DOUBLE) gy: grey : FLUE GAS THERMOSTAT pk: pink...
  • Page 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.
  • Page 52 Parameter setting FORMENTERA FORMENTERA CTFS 24-28 CTFS / CTN CTN 24 EXTERNAL PROBE SONDA ESTERNA AMBIENT TERMOSTATO THERMOSTAT AMBIENTE MORSETTI 5 - 6 TERMINALS 5 - 6 MORSETTI 3 - 4 TERMINALS 3 - 4 TERMINALS 21 - 22 - 23 MORSETTI 21 - 22 - 23 VALVOLA DEVIATRICE SOLARE SOLAR DEVIATING VALVE...
  • Page 53 Ponticello relè liberamente OT o TA1 Sonda programmabile Sonda Sonda Boll. Sonda n.c. n.a. caldaia Boll. solare Coll. Solare comunicazione Valvola con periferiche Contatto motorizzata Contatto TA1 Termostato a ritorno Contatto Bollitore automatico 230V a.c 485A 485B Open-Therm BACK 0SCHEINT01 RETRO 0SCHEINT01 Conn_F CN_J...
  • Page 54 INTERNAL CONNECTIONS : PRESSURE TRANSDUCER rd: red SR1-SR2 : CH NTC PROBE 10k Ohm at 25°C B=3435 (DOUBLE) wh: white : FLUE GAS THERMOSTAT bl: blue : WATER CYLINDER THERMOSTAT bk: black : GAS VALVE WITH MODULATION COIL gy: grey : BOILER CIRCULATION PUMP pk: pink : 10 KOhm 1/4 Watt RESISTOR...
  • Page 55 ALARM PSOL 0CREMOTO04 Sext QUATOUCH04 0QATOUCH04 (view from the back) (vista da dietro) Conn_F SM1 SM2 CN_J Conn_E CN_E CN_C CN_C Conn_C CN_H CN_B CN_J CN_A CN_A CN_D CN_D CHEM D2 CN_M CN_N RISC. bl ACC1 CN_L CN_L CN_I CN_M X7 X6 X5 X4 X3 X2 CN_I CN_N...
  • Page 56 INTERNAL CONNECTIONS : PRESSURE TRANSDUCER rd: red wh: white SM1-SM2 : CH PROBE 10k Ohm at 25°C B=3435 bu: blue : FLUE GAS PRESSURE SWITCH bk: black : GAS VALVE WITH MODULATION COIL gy: grey : BOILER CIRCULATION PUMP pk: pink : RESISTOR KΩ...
  • Page 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 Solenoid valve with limit switch Solenoid valve with limit switch fig. 33 fig.
  • Page 58 REMOTE CONTROL OR BOILER INTERFACE fig. 37 Error signalling relay Relay controlled by TA1 or by the remote control Relay controlled by TA2 or by the interface 27203 24979 22959 21122 19451 17928 16539 15271 14113 13054 12084 11196 10382 9634 8948 8317...
  • Page 59 - Disconnect the boiler from the electric power supply. - Remove boiler outer front panel, as described in fig. 38. fig. 38 - Remove the front panel of the combustion chamber, and remove expansion tank as shown in fig. 39 and 40; fig.39...
  • Page 60 fig. 40...
  • Page 61 - Remove the front part of combustion chamber as shown in fig. 41; 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;...
  • Page 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.
  • Page 63 Before testing the boiler, it is recommended to check the following: - the boiler has been installed in compliance with laws and standards in force in the country of installation; - the flue gas venting duct and the relative terminal are installed in conformity with the instructions given in the present document: there must be no leakage of combustion by-products from any of the gaskets;...

  • Page 64: Maintenance

    The user is strongly advised to have the boiler serviced and repaired by a qualified Authorised Service Centre. The boiler must be serviced at least once every year. Disconnect electric power supply before starting any maintenance procedure, involving replacement of components and/or Maintenance operations include check and cleaning procedures.
  • Page 65 BOILER STATUS MALFUNCTION PROBABLE CAUSE SOLUTION Check gas supply. Gas supply failure. Check gas supply cock or gas network safety valve intervention. Burner does not ignite Gas valve is disconnected. Reconnect it. Gas valve is faulty. Replace it. The board is faulty. Replace it.
  • Page 66 BOILER STATUS MALFUNCTION PROBABLE CAUSE SOLUTION Probe is disconnected. Reconnect it. Solar collector failure. E24** Probe is faulty. Replace it. Probe is disconnected. Reconnect it. E27** Solar valve failure. Probe is faulty. Replace it. Probe is disconnected. Reconnect it. E28** Solar water cylinder failure.
  • Page 68 Tel. +39 0365/878.31 - Fax +39 0365/878.576 e mail: info@fondital.it - www.fondital.com The manufacturer reserves the right to modify his/her products as deemed necessary, without altering the basic characteristics of the products themselves. Uff. Pubblicità Fondital IST 03 C 548 - 01 Maggio 2013 (05/2013)

This manual is also suitable for:

Formentera ctn 28Formentera ctfs 32