Ariston A/23 MFFI User Manual
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Ariston A/23 MFFI User Manual

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Users
Manual
A/23 MFFI
A/27 MFFI
Supplied By www.heating spares.co Tel. 0161 620 6677

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  • Page 1 Users Manual A/23 MFFI A/27 MFFI Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 2 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 3 TABLE OF CONTENTS 1) GENERAL INFORMATION page 5 2) OPERATING INSTRUCTIONS page 8 3) TIME CLOCK page 11 4) USEFUL INFORMATION AND TROUBLESHOOTING page 13 IMPORTANT MTS (GB) Limited support the , initiative. Your installer will give Please read this manual carefully. you, and show you how to use, a logbook which will give you important information about your boiler, and heating system.
  • Page 4 Dear Customer, The guarantee on this appliances is valid for 12 Thank you for choosing an ARISTON combination boiler. months from the first day of installation. We guarantee that your boiler is a reliable and technically sound product. Repairs to the electric, hydraulic or gas circuits This User’s Manual provides detailed instructions and recommen-...
  • Page 5 TECHNICAL INFORMATION A/23 MFFI A/27 MFFI GENERAL DATA Heating input max kW(Btu/h) 25.6 (87364) 29.8 (101707) Heating input min kW(Btu/h) 11.0 (37539) 12.0 (40956) Heating output max kW(Btu/h) 23.1 (78491) 27.3 (92492) Heating output min kW(Btu/h) 9.2 (31396) 10.1 (34471) Efficiency at Maximum Thermal Capacity (see installation manual) 90.2...
  • Page 6 LEGEND MODELS A/23 - A/27 MFFI A) Ignition Lockout Reset Button/Safety (Overheat)Thermostat Reset B) Ignition Lockout L.E.D. C) Selector Knob for Summer/Winter/Flue Analysis Modes 40° 50° 60° 70° 80° D) Low System Water Level L.E.D. °C °C E) Temperature Adjustment Knob for Domestic Hot Water F) Heating System Thermometer G) Safety (Overheat)Thermostat Intervention L.E.D.
  • Page 7 OPERATING INSTRUCTIONS recommended value. Consult your installer for checking and refilling the system. CAUTION - The outer panels of the unit's case must only be cleaned with a damp Installation, start-up, adjustments and maintenance must be perfor- cloth. Do not use abrasive cleaners. The Control panel can be wiped with med by a competent person only in accordance with the Gas Safety a damp or dry cloth.
  • Page 8 START-UP PROCEDURE WINTER AND SUMMER OPERATING MODES LIGHTING The boiler is fitted with a selector knob “C” which allows you to switch between winter < > and Before starting the unit, check the following: summer < > operating modes and vice versa. - The water pressure on the pressure gauge “O”;...

  • Page 9: Turning Off The Boiler

    TURNING ON THE BOILER Installation with a room thermostat: °C - Turn the “C” selector knob to < >; - Turn on the power supply to the boiler by pressing the Installation without a room thermostat : On/Off switch ”L”; the green L.E.D. will then turn on; - Turn on the power supply to the boiler by pressing the - Turn the thermostat knob “H”...

  • Page 10: Adjusting The Heating Temperature

    ADJUSTING THE HEATING TEMPERATURE PRODUCTION OF HOT WATER FOR DOMESTIC USE To economise on consumption while achieving the highest level of comfort, the temperature adjustment knob is designed with three different heating °C zones based on the temperature outside the home. Rotate the knob “H”...

  • Page 11: Shutdown Procedure

    SHUTDOWN PROCEDURE After approximately two seconds the following display appears: Weekdays blinks To turn off the main burner, simply press the On/Off switch “L”; the green L.E.D. “I” will also turn off. As a precautionary measure, it is recommended that the gas cock located on the bottom of the boiler be tur- ned off as well.
  • Page 12 The colon now blinks once a second. operates at the same time every day. 1 2 3 4 5 6 7 Monday ..Sunday AM/PM TIME DISPLAY If you press the “+/-h” and “h” keys as the same time, the time display swit- 1 2 3 4 5 6 Monday ..

  • Page 13: Additional Functions

    ADDITIONAL FUNCTIONS READING THE PROGRAMMED SWITCHING TIMES Pressing the “Prog” key displays the programmed switching times until the first free memory location appears in the display “ -- : --”. Switching from summer time to winter and vice versa. Press the “+/-1h” key once. MANUAL OVERRIDE KEY With the “...

  • Page 14: Troubleshooting

    USEFUL INFORMATION AND Notes on storing switching times: If you end your entry of the switching times by pressing the “Prog” key, the TROUBLESHOOTING switching time you have entered will be stored and the next memory loca- tion displayed. Entry of further switching times is also carried out as descri- BOILER SHUTDOWN bed in “Entering the switching times”.
  • Page 15 SHUTDOWN DUE TO OVERHEATING NOTES This anomaly is signalled by the red “G” L.E.D. The boiler shuts off because the safety thermostat detected that the boiler temperature has reached the temperature limit. To reset the unit, wait until the boiler has cooled and then press the “A”...
  • Page 16 G R O U P Manufacturer: Merloni TermoSanitari SpA - Italy Commercial subsidiary: MTS (GB) LIMITED MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone: (01494) 755600 Fax: (01494) 459775 Internet: http://www.mtsgb.ltd.uk E-mail: info@mtsgb.ltd.uk Technical Service Hot Line: (01494) 539579 Cod.

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