Fondital ANTEA NEXT KC 18 User Manual
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Fondital ANTEA NEXT KC 18 User Manual

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It is compulsory to read this manual before proceeding with the boiler
installation, use and maintenance operations.
This boiler is intended for production of hot technical water only:
• For heating of residential, commercial and industrial rooms.
• For heating of industrial process water.
• For indirect production of domestic hot water.
Any other use is forbidden.
ANTEA NEXT
KC 18-26-30-35
KR 12-24-28-32
KRB 12-24-28-32
USER MANUAL
EN
Translation of the original
instructions (in Italian)

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Summary of Contents for Fondital ANTEA NEXT KC 18

  • Page 1 ANTEA NEXT KC 18-26-30-35 KR 12-24-28-32 KRB 12-24-28-32 USER MANUAL Translation of the original instructions (in Italian) It is compulsory to read this manual before proceeding with the boiler installation, use and maintenance operations. This boiler is intended for production of hot technical water only: •...
  • Page 2 General information Dear Sirs, thank You for choosing and buying one of our products. Please read these instructions carefully in order to properly install, operate, and maintain the product. Following the boiler installation, the installer should advise the user about boiler operation and its safety devices. The USER MANUAL and the INSTALLATION AND MAINTENANCE MANUAL are an integral and essential part of the product.
  • Page 3 WARNING This boiler must be installed inside the building or in a partially sheltered place. A partially sheltered place is a place which is not directly exposed to atmospheric agents. Any installation in a place that is not partially sheltered is forbidden. DANGER This boiler must be correctly and safely connected to an electrical system compliant with the existing technical stand- ards.
  • Page 4 III conditions and to ensure fully safe maintenance operations. If the power cable is damaged, it must be replaced by Fondital or its technical service department or a similarly qualified person in order to prevent any risk.
  • Page 5 The user is strongly advised to have the system serviced and repaired by qualified personnel, satisfying all prevailing law require- ments, and trained to properly carry out these operations. In the event of long periods of inactivity of the boiler, disconnect it from the electrical power mains and close the gas cock. WARNING With the electrical power disconnected and the gas cock closed, the device's electrical anti-freeze function does not work.

  • Page 6: Table Of Contents

    Instructions for the user ........... . . Control panel ................................
  • Page 7 Fig. 1 Control panel ..................Fig.

  • Page 8: Instructions For The User

    1. Instructions for the user Control panel 25°C 18°C 20°C °C VEN 30/08/19 15:30 25°C 18°C 20°C °C VEN 30/08/19 15:30 Fig. 1 Control panel A. Display. B. Encoder and confirmation of parameters. C. Menu button. D. Reset key and back to previous page. E.
  • Page 9 Ref. Symbol Description The flame indicates that the burner is on. When the burner is off, the flame indicator is no longer there. The bar associated with the numerical value (ref.15) indicates the percentage of instantaneous boiler power. The radiator symbol indicates the heating function display area. Grey symbol: no heating demand.

  • Page 10: Interpreting Boiler Status From Display Indications

    Interpreting boiler status from display indications 1.2.1 Normal operation Boiler OFF VEN 30/08/19 15:30 Boiler in SUMMER mode No active function °C 57.0 DHW temperature is displayed VEN 30/08/19 15:30 °C 70.0 Boiler in WINTER mode No active function °C 57.0 The flow temperature and the domestic hot water temperature are displayed VEN 30/08/19...

  • Page 11: Menu Selection

    Menu selection The following menu functions can be accessed: • SETTINGS; • INFO. SETTINGS MENU By selecting the SETTINGS menu, the following functions are available: • LANGUAGE: allows you to change the language shown on the display; • DATE AND TIME: allows you to change the date and time shown on the display; •...
  • Page 12 DATE AND TIME To change the date and time shown on the display, proceed as follows: • turn the encoder (key B) clockwise until the DATE AND TIME item turns grey; • press the encoder to access the date and time values; •...
  • Page 13 TEMP.HEAT.ECO To set the eco heating temperature, proceed as follows: • turn the encoder (key B) clockwise until the TEMP.HEAT.ECO item turns grey; • press the encoder; • turn the encoder until the symbol turns grey; • press the encoder to modify the temperature value; •...
  • Page 14 AIR PURGE To start the air purge procedure, proceed as follows: • turn the encoder (key B) clockwise until the AIR PURGE item turns grey; • press the encoder; • turn the encoder until the symbol turns grey; • turn the encoder until ON is displayed; •...

  • Page 15: Hourly Heating Programming

    INFO MENU Selecting the INFO menu allows you to view some system parameters. To open the INFO menu proceed as follows: • press key • turn the encoder (key B), the area where symbol is located turns grey; • press the encoder; •...
  • Page 16 To set the start time of the first time slot (F1) proceed as follows: • turn the encoder until the start time turns grey; • press the encoder; • turn the encoder clockwise or anticlockwise until the required time value is displayed (it is possible to increase or decrease this value in 15-minute intervals);...
  • Page 17 COPY PROGRAMMING FUNCTION It is possible to copy the same hourly heating programming set for a particular day to the remaining days of the week. Below is the procedure for copying the Monday hourly programming to the remaining days of the week: •...

  • Page 18: Dhw Programming (Krb Model Only)

    DHW programming (KRB model only) Hourly programming is only possible if you have enabled the programming of DHW or DHW and CH (see section PROGRAMMING on page 14) and the boiler is equipped with water heater. DHW programming involves changing the temperature and the 4 time slots. 1.5.1 DHW temperature programming To change the setpoint temperature of the water heater, which will be the same for all time slots, proceed as follows:...
  • Page 19 To set the start time of the first time slot (F1) proceed as follows: • turn the encoder until the start time turns grey; • press the encoder; • turn the encoder clockwise or anticlockwise until the required time value is displayed (it is possible to increase or decrease this value in 15-minute intervals);...
  • Page 20 COPY PROGRAMMING FUNCTION It is possible to copy the same DHW hourly programming set for a particular day to the remaining days of the week. Below is the procedure for copying the Monday hourly programming to the remaining days of the week: •...

  • Page 21: Boiler Operation

    Boiler operation 1.6.1 Switching on and switching off DANGER It is presumed that the boiler has been installed by a qualified installer, it has been commissioned and is ready to operate correctly. • Open the gas shut-off cock. • Turn the master switch installed ahead of the boiler to ON. •...
  • Page 22 1.6.4 DHW function DHW production function is enabled on KC model and on KR/KRB models with external water heater (optional). DHW production function is enabled in one of the following operating modes: SUMMER or WINTER. Such function has always priority over CH water supply. To change DHW temperature setpoint, proceed as follows: •...
  • Page 23 1.6.5.2 Plate heat exchanger freeze protection function (only KC model) When the DHW temperature sensor detects a water temperature of +5°C, the boiler switches on and stays on at its minimum heat output until the DHW temperature reaches +10°C or 15 minutes have elapsed (the deviating valve is in the DHW position). During the DHW freeze protection operation the temperature detected by the flow probe is constantly checked, and in case it reaches +60 °C the burner is switched off.
  • Page 24 1.6.9 Operation with ambient probe (optional) Boiler can be connected to a probe measuring the ambient temperature (optional not compulsory, supplied by the manufacturer). Once the ambient temperature value is known, the boiler automatically regulates the heating water temperature, increasing it as the ambient temperature decreases and decreasing it when the ambient temperature gets close to the set temperature.

  • Page 25: Boiler Shut-Down

    1.6.11 Operation with (optional) remote control The boiler can also be connected to a Remote Control (optional - not compulsory, supplied by the manufacturer) so as to manage several boiler parameters, such as: • Boiler status selection. • Ambient temperature selection. •...
  • Page 26 1.7.4 Shut-down due to low water pressure Fault code E04 is displayed on the LCD display in the event of shut-down triggered by the water pressure switch. Fill the system by working on filler cock (A) (see Fig. 2 Filler cock). Water pressure must be 1÷1.3 bars while the boiler is cold.

  • Page 27: Maintenance

    1.7.7 Alarm due to (optional) Remote Control connection malfunction The boiler recognises whether or not there is a Remote Control (optional, not compulsory). 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 which the fault code E31 is shown on the remote control display.

  • Page 28: Decommissioning, Disassembly And Disposal

    2. Decommissioning, disassembly and disposal WARNING Gas boilers are electrical and electronic equipment (EEE) and when decommissioned they become waste electrical and electronic equipment (WEEE), therefore, they must be disposed of in compliance with the legislation in force in the coun- try of installation.

  • Page 29: Malfunctions, Possible Causes And Solutions

    3. Malfunctions, possible causes and solutions Troubleshooting BOILER STA- MALFUNCTION PROBABLE CAUSE User's tasks Qualified personnel's tasks Check gas supply. Gas supply failure. Check gas supply cock opening or gas network safety valve intervention. Gas valve is disconnect- Burner does not ignite. Contact qualified personnel Reconnect it.
  • Page 30 BOILER STA- MALFUNCTION PROBABLE CAUSE User's tasks Qualified personnel's tasks Fill the system (see section Boiler shut-down). The system has been If the error occurs again several times, contact a qualified recently bled. Service Centre or qualified personnel. CH system water pres- The system is leaking.
  • Page 31 BOILER STA- MALFUNCTION PROBABLE CAUSE User's tasks Qualified personnel's tasks Boiler flow temperature Contact qualified personnel Check curve parameters. not properly set. Thermostat is discon- Contact qualified personnel Reconnect it. nected. Triggering of boiler E35** low-temperature safety Thermostat is faulty. Contact qualified personnel Replace it.
  • Page 32 BOILER STA- MALFUNCTION PROBABLE CAUSE User's tasks Qualified personnel's tasks Presence of a remote Check parameters P61, E43** Input configuration error. control instead of a room Contact qualified personnel P77 and P89. thermostat. Probe is disconnected. Contact qualified personnel Reconnect it. The ambient probe does E44** not work.
  • Page 33 BOILER STA- MALFUNCTION PROBABLE CAUSE User's tasks Qualified personnel's tasks Fan disconnected. Contact qualified personnel Check the fan. E158* APS_LOCKOUT Faulty boiler board. Contact qualified personnel Replace the board. MAX_TRIALS_LOCK- E160* See indications for E01. See indications for E01. See indications for E01. Water does not circulate Contact qualified personnel Check system status.
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  • Page 36 Fax +39 0365 878 304 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 1721 - 01 | Luglio 2024 (07/2024)

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