Ariston MicroCombi 23 MFFI User Manual. Wall-hung electronic ignition gas combination boiler ariston microcombi 23 mffi/ microcombi 27 mffi (4 pages) Boiler Ariston micro Genus User Manual. Boiler Ariston A/23 MFFI Installation Instructions Manual. Type c boiler (24 pages). Manual A/23 MFFI A/27 MFFI. 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. Thank you for choosing an ARISTON combination boiler. We guarantee that your boiler is a reliable and technically sound product.

• User’s Manual. • Dear Customer, The guarantee on this appliance is valid for 24 months from the first Thank you for choosing an ARISTON day of installation.

We guarantee that your boiler is a reliable Repairs to the electric, hydraulic and technically sound product. • TABLE OF CONTENTS page 4 ENERAL NFORMATION Technical Information page 5 Control Panel page 6 page 8 PERATING NSTRUCTIONS SEFUL NFORMATION page 14 ROUBLESHOOTING page 16 AINTENANCE page 16 HANGE OF page 17 LOCK MPORTANT Please read this manual carefully. For additional information, please consult the “Installation and Servicing Instructions.”. ENERAL NFORMATION Do not allow children or inexperienced persons to use the appliance without MTS (GB) Limited support the supervision. Your installer will give you, and If you smell gas in the room, do not turn show you how to use, a logbook which will on light switches, use the telephone or give you important information about your. • ECHNICAL NFORMATION 23 kW 27 kW GENERAL DATA Heating input max-min 25.6-11.0 29.8-12.0 Heating output max-min 23.8-9.7 27.8-10.5 Efficiency at Maximum Thermal Capacity (see 92.9 93.5 installation instructions) CENTRAL HEATING Operating Temperature max-min °C 82-42 82-42 Maximum-Minimum Heating Pressure 3-0.7 3-0.7 Built-in expansion vessel - Total capacity litres. • ONTROL ANEL 23 MI 23/27 MFFI.

• EGEND A - On/Off knob K - Central heating temperature B - Domestic hot water temperature L.E.D (yellow) adjustment knob L - Time clock C - Central heating selection M - Heating system pressure gauge (winter) and temperature adjustment knob D - On/Off L.E.D. OPERATING INSTRUCTIONS ELPFUL UGGESTIONS AUTION To get the most out of your boiler, we nstallation, start-up, adjustments have provided you with some useful and maintenance must be performed advice proper by a competent person only, in maintenance: accordance with the current Gas - Periodically check system. Consult your installer for reducing gas consumption and checking and refilling the system.

Maintenance costs. - The outer panels of the unit's case - If the boiler should be out of use for must only be cleaned with a damp prolonged period, cloth.

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• boiler fail to ignite a second time, check GNITION PROCEDURE that the external gas cock is open. If the Turn the selector knob “A” to the “J” problem persists, contact position. The green L.E.D. “D” will Authorised Service Centre. Illuminate indicating that the boiler is ready to operate.

• the user can select winter or summer somewhere between min. And max., a operating mode. Keeping the knob “C” temperature may be obtained which at the “0” position selects the summer varies from approximately 45˚C to operating mode. Winter operating about 80˚C. • it at max in order to temperature for the water may be obtain best chosen in a range from 36˚C to about performance from 56˚C, depending on the flow rate of the the boiler and to water and the position of the knob allow the regulation between the min.

• The comfort mode is a special operating state, because the water URNING OFF THE BOILER contained in the secondary exchanger and in the primary exchanger is kept in To turn the boiler off, rotate the selector a preheated condition, thereby allowing knob “A”. USEFUL INFORMATION illuminate. In order to reset the ignition, the button “H” must be pressed and AND TROUBLESHOOTING released. Should the boiler fail to ignite a second time, check that the external OILER SHUTDOWN SITUATIONS gas cock is open. If the problem persists, contact an Authorised Service The boiler is equipped with safety Centre. • within the system, have a plumber HUTDOWN DUE TO INSUFFICIENT check the heating system for possible WATER CIRCULATION water leaks.

EMPORARY SHUTDOWN DUE TO If the red L.E.D. “L” is DEFECTIVE DISCHARGE OF illuminated boiler off, EXHAUST FUMES possible cause for this state is an insufficient The boiler is fitted with safety devices, pressure of water in the system. MAINTENANCE MPORTANT If this situation occurs frequently, contact an Authorised Service Centre. Schedule an annual maintenance so that they may check that the exhaust check-up boiler with fumes are being expelled correctly and competent person. That the area is ventilated properly. Correct maintenance always results in savings in the cost of running the FROST DEVICE. TIME CLOCK Do this: - every time you wish to “Reset” time The steps marked with the symbol switch; are necessary to carry out a switching - to erase all switching times and the program.