Users Manual
Dear Customer, Thank you for choosing an ARISTON boiler. We guarantee that your boiler is a reliable and technically sound product. This User's Manual provides detailed instructions and recommendations for The guarantee on this appliance is valid for 24 months from the first day of installation. Repairs to the electric, hydraulic or gas circuits may be carried out only by your local authorised MTS Servicing Centre. proper installation, use and maintenance.
TABLE OF CONTENTS 1. GENERAL INFORMATION Technical Information Control Panel 2. 3. 4. 5. 6. OPERATING INSTRUCTIONS USEFUL INFORMATION AND TROUBLESHOOTING MAINTENANCE CHANGE OF GAS TYPE TIME CLOCK page page page page 4 5 6 8 page 14 page 16 page 16 page 17 IMPORTANT! Please read this manual carefully. For additional information, please consult the “Installation and Servicing Instructions.
1. GENERAL INFORMATION MTS (GB) Limited support the initiative. Your installer will give you, and show you how to use, a logbook which will give you important information about your boiler, and heating system. Please have this logbook to hand whenever you contact a service engineer or us. All CORGI Registered Installers carry a CORGI ID card, and have a registration number. Both should be recorded in your boiler Logbook.
TECHNICAL INFORMATION kW kW % 23 kW 25.6-11.0 23.8-9.7 92.9 27 kW 29.8-12.0 27.8-10.5 93.5 °C bar litres 82-42 3-0.7 6 82-42 3-0.7 6 °C bar l/min l/min l/min 56-36 8-0.2 13.6 9.7 2.6 56-36 8-0.2 ? ? 2.
FR025A CONTROL PANEL 23/27 MFFI 6
LEGEND: A - On/Off knob B - Domestic hot water temperature adjustment knob C - Central heating selection (winter) and temperature adjustment knob D - On/Off L.E.D. (green) E - Fume sensor L.E.D. (yellow) F - Ignition failure (lockout) L.E.D. (red) G - “Economy/Comfort” mode selection knob H - Ignition failure (lockout) and/or overheat reset button I - Overheat L.E.D. (red) J - Low system water level L.E.D. (red) K - Central heating temperature L.E.
2. OPERATING INSTRUCTIONS HELPFUL SUGGESTIONS CAUTION Installation, start-up, adjustments and maintenance must be performed by a competent person only, in accordance with the current Gas Safety (Installation & Use) Regulations and the instructions provided. Improper installation may cause damage or injury to individuals, animals and personal property, for which the manufacturer will not be held liable.
value. Consult your installer for checking and refilling the system. - The outer panels of the unit's case must only be cleaned with a damp cloth. Do not use abrasive cleaners. The control panel can be wiped with either a damp or dry cloth. Spray polishes must not be used on the control panel surface or knobs. Care must be taken in preventing any liquid entering the appliance.
IGNITION PROCEDURE Turn the selector knob “A” to the “J” position. The green L.E.D. “D” will D boiler fail to ignite a second time, check that the external gas cock is open. If the problem persists, contact an Authorised Service Centre. A F H RESET UT011Aa UT011Aq illuminate indicating that the boiler is ready to operate. The centralised electronic control unit will ignite the burner, without any manual intervention but in response to the request for domestic hot water or heating.
ADJUSTING THE summer somewhere between min. and max., a temperature may be obtained which varies from approximately 45˚C to about 80˚C. K The water temperature in the primary circuit may be checked by means of the yellow L.E.D.s “K”. HEATING winter UT011An the user can select winter or summer operating mode. Keeping the knob “C” at the “0” position selects the summer operating mode. Winter operating mode may be selected by positioning the knob “C” between the min. and max. settings.
it at max in order to obtain the best performance from the boiler and to allow the regulation of the external temperature to function efficiently. temperature for the water may be chosen in a range from 36˚C to about 56˚C, depending on the flow rate of the water and the position of the knob between the min. and max. settings.
The comfort mode is a special operating state, because the water contained in the secondary exchanger and in the primary exchanger is kept in a preheated condition, thereby allowing a quicker delivery of domestic water when required. The latter is therefore the more convenient choice. TURNING TURNING OFF THE BOILER To turn the boiler off, rotate the selector knob “A” to the “0” position (OFF); the respective green L.E.D. “D” will go off.
3. USEFUL INFORMATION AND TROUBLESHOOTING BOILER SHUTDOWN SITUATIONS The boiler is equipped with safety devices that intervene in certain situations and shut it off. Most of these situations are communicated by means of the L.E.D.s and at times the user may be able to remedy them. SHUTDOWN DUE TO IGNITION FAILURE In the event that the automatic ignition of the burner has failed, the red J RESET H F UT011Ai 14 L.E.D. “F” will illuminate.
SHUTDOWN DUE TO INSUFFICIENT WATER CIRCULATION If the red L.E.D. “L” is L illuminated and the boiler is off, one possible cause for this UT011Al state is an insufficient pressure of water in the system. Check the system pressure on the pressure gauge “M” and if it is less than 0.5 bar, consult your installer for checking and refilling the system. Then turn off and turn back on the boiler by means of the selector knob “A”. If the boiler does not start up again and the L.E.D.
IMPORTANT! If this situation occurs frequently, contact an Authorised Service Centre. so that they may check that the exhaust fumes are being expelled correctly and that the area is ventilated properly. ANTI-FROST DEVICE The boiler is fitted with a device which, in the event that the water temperature goes below 5°C, the three-way diverter valve switches to domestic hot water and the burner turns on at minimum power until the water in the boiler has reached a temperature of about 50°C.
inside (off setting) to the outside of the clock border (on setting), the circuit is closed (switch on) for a period of 15 minutes and then the boiler starts if the room thermostat (if installed) or the heating thermostat require heat (heating function on). 6. TIME CLOCK UT011Ap NOTE: the time clock is for central heating control only. The time clock is provided with 96 switches, called riders, each of which covers a time interval of 15 minutes (four per hour).
clock border; - pull outward the riders for 7.00 am and 9.30 am, and then all riders between these two; - repeat this for 7.00 pm and 10.00 pm. Other heating intervals may be set in the same way. The timer has approximately 150 hours of battery back up for power failure. The clock is provided with a selector switch with three positions (see figure): “I” 1.
TECHNICAL DATA Ambient temperature: Running reserve: Shortest switching time: Programmable: - 10°C to + 55°C 150 h (not for 1.
Stampa: Bieffe Recanati Merloni TermoSanitari SpA - Italy Commercial subsidiary: MTS (GB) LIMITED MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone: (01494) 755600 Fax: (01494) 459775 Technical Service Hot Line: (01494) 539579 20 Cod.
