Ariston GENUS 23 MFFI Installation Instructions Manual

Ariston GENUS 23 MFFI Installation Instructions Manual

Type c boilers
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Country of destination: GB
Installation Instructions
Type C Boilers
G.C.N:
41-116-01
47-116-08
47-116-09
47-116-13
LEAVE THESE INSTRUCTIONS
ADJACENT TO THE GAS METER

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Summary of Contents for Ariston GENUS 23 MFFI

  • Page 1 Installation Instructions Type C Boilers G.C.N: 41-116-01 47-116-08 47-116-09 47-116-13 LEAVE THESE INSTRUCTIONS ADJACENT TO THE GAS METER Country of destination: GB...
  • Page 2: Table Of Contents

    3.7 Fume Discharge Monitoring 3.8 Boiler Safety Systems 3.9 Draining the System GAS ADJUSTMENTS - Gas Adjustment Table 4.1 Changing the Type of Gas MAINTENANCE MISCELLANEOUS 6.1 Wiring Diagram for Two Heating Zones 6.2 Wiring Diagram for Connection to Ariston Unvented Cylinder B004...
  • Page 3: General Information

    This manual is an integral and essential part of the product. It should be kept GENERAL with the appliance so that it can be consulted by the user and our authorised INFORMATION personnel. Please carefully read the instructions and notices about the unit contained in this manual, as they provide impor tant information regarding the safe installation, use and maintenance of the product.
  • Page 4: Technical Information

    3 - Check the general condition of the appliance and of the combustion chamber visually. 4 - Visual check of the combustion: clean burners if necessary. 5 - With reference to point 3, dismantle and clean the combustion chamber if necessary.
  • Page 5: Overall View

    Overall View GENUS 23/27/30 MFFI GENUS 27 RFFI SYSTEM Fig. 1.1 Legend: 1. Flue Connector 2. Combustion Chamber Hood 3. Main Heat Exchanger 4. Combustion Chamber Insulation Panel 5. Burner 6. Expansion Vessel 7. Overheat Thermostat 8. Spark Generator 9. Diverter Valve (MFFI) Motorised Valve (RFFI)
  • Page 6: Installation

    INSTALLATION The technical information and instructions provided herein below are intended for the installer so that the unit may be installed correctly and safely. The installation and initial startup of the boiler must be by a CORGI Approved Installer in compliance with the installation standards currently in effect, as well Reference Standards as with any and all local health and safety standards i.e.
  • Page 7: Overall Dimensions

    GENUS 23/27/30 MFFI Overall Dimensions (A-B-D-E) GENUS 27 RFFI SYSTEM Legend: A = Central Heating Flow (3/4”) B = Domestic Hot Water Outlet (1/2”) C = Gas Inlet (3/4”) (F - G) D = Domestic Cold Water Inlet (1/2”) (A - D - E) E = Central Heating Return (3/4”) F = Cylinder Flow (3/4”) C DGE...
  • Page 8: Mounting The Appliance

    Mounting the Appliance Fasten the boiler in place using the template and anchors supplied with the unit. It is highly recommended that a spirit level be used to position the boiler so that it is perfectly level. For additional information, please consult the instructions contained in the connection kit and the flue kit.
  • Page 9: Water Connections

    Water Connections View of the Boiler Connections GENUS 23/27/30 MFFI GENUS 27 RFFI SYSTEM Legend Fig. 2.4 A = Central Heating Flow B = Domestic Hot Water Outlet C = Gas Inlet D = Domestic Cold Water Inlet E = Central Heating Return F = Cylinder Flow G = Cylinder Return I = Safety Valve...
  • Page 10: Flue Connection

    Air Release Points: These must be fitted at all high points where air naturally collects and must be sited to facilitate complete filling of the system. The appliance has an integral sealed expansion vessel to accommodate the increase of water value when the system is heated. It can accept up to 7 l (1.5 gal) of expansion water.
  • Page 11 A suitable terminal guard is available from: TOWER FLUE COMPONENTS Morley Road Tonbridge Kent TN9 1RA The minimum acceptable spacing from the terminal to obstructions and ventilation openings are specified in Fig. 2.6 TERMINAL POSITION A - Directly below an open window or other opening Fig.
  • Page 12 In addition, it is also possible to use a split system by fitting a special adapter to the flue discharge collar and using one of the apertures for the air vent intake located on the top part of the combustion chamber (A). Ø...
  • Page 13 In Fig. 2.11 below, several different types of flue systems are shown. For additional information regarding the flue accessories, please consult the Flue Pipe Accessories manual. Fig. 2.11 B004...
  • Page 14 In calculating the lengths of the pipes, the maximum length must also take into consideration the values for the exhaust/air intake end terminals, as well as 90° elbows for coaxial systems. The C52 types must comply with the following requirements: 1.
  • Page 15: Room Thermostat Connection

    2.10 Room Thermostat In order to perform this procedure, remove the boiler casing as indicated in section 3.2. Then proceed as follows: Connection 1 Remove the two screws “A” in order to remove the cover, release the two clips “B” and lift and rotate down the control panel box. 2 Open the cover “C”...
  • Page 16 Legend: 2.11 Electrical Diagram AT = High Voltage P.C.B. BT = Low Voltage P.C.B. = Remote Connector Kit = Flame Failure L.E.D. = Insufficient Water Pressure L.E.D. = Water Temperature Indicator L.E.D.s = Overheat Thermostat Warning L.E.D. = System Reset Button = Selector Knob for Operating Mode = Domestic Hot Water Temp.
  • Page 17 GENUS 23/27/30 MFFI GENUS 27 RFFI SYSTEM B004...
  • Page 18 GENUS 23/27/30 MFFI GENUS 27 RFFI SYSTEM B004...
  • Page 19: Water Circuit Diagrams

    2.12 Water Circuit Diagram Legend GENUS 23/27/30 MFFI 1. Air Pressure Switch 2. Fan 3. Main Heat Exchanger 4. Burner 5. Electronic Ignitor and Electronic Flame Detector 6. Gas Valve 7. Overheat Thermostat 8. Heating Sensor 9. Diverter Valve (MFFI) Motorised Valve (RFFI) 10.
  • Page 20: Commissioning

    COMMISSIONING Initial Preparation Preliminary electrical system checks to ensure electrical safety must be carried out by a competent person i.e. polarity, earth continuity, resistance to earth and short circuit. Filling the Heating System: Remove the panels of the case and lower the control panel (see point 3.2. for further information).
  • Page 21: Control Panel

    2. Lift the front panel up until it stops after the click; 3. Remove the front panel from the rest of boiler casing; 4. Unhook the two cords from the location slots. Control Panel A - Ignition Lockout Reset GENUS 23/27/30 MFFI Button/Safety (Overheat)Thermostat Reset B - Ignition Lockout L.E.D.
  • Page 22: Initial Start-Up

    Initial Start-up The checks to be run before initial start-up are as follows: 1. Make sure that: - the screw on the automatic air valve has been loosened when the system is full; - If the water pressure in the system is below 1 bar, bring it up to the appro- priate level;...
  • Page 23: Combustion Analysis

    - the potentiometer for regulating the soft-light feature, the setting for which can range from the minimum thermal power to the maximum: 5 mbar 18 mbar G30-31 19 mbar - the potentiometer for the maximum thermal power for the heating system, maximum thermal power setting (factory set at the maximum value, unless indicated otherwise on the adhesive sticker located in proximity to the potentiometer);...
  • Page 24: Boiler Safety Systems

    The boiler is equipped with the following safety systems (see section 3.3 for Boiler Safety references): Systems 1. - Ignition Failure This control signals an ignition failure on the burner 7 seconds after a lighting failure. The L.E.D. “B” will turn on to signal the shutdown status. The system can be reset by pressing and releasing the button “A”...
  • Page 25: Gas Adjustments

    GAS ADJUSTMENTS CATEGORY II2H3+ Methane Gas Liquid Butane Gas Liquid Propane Gas MJ/m 3 h Lower Wobbe Index (15°C;1013mbar) 45.67 80.58 70.69 Nominal Delivery Pressure mbar Minimum Delivery Pressure mbar 23 MFFI Main Burner: n. 13 jets (ø) 1.25 0.72 0.72 Consumption (15°C;...
  • Page 26: Maintenance

    5. Adjust the soft-light feature; 6. Adjust the delayed lighting feature for the heating system (can be set from 0 to 2 mins.). MAINTENANCE It is recommended that the following checks be made on the boiler at least once a year: 1 - Check the seals for the water connections;...
  • Page 27 Honeywell ST 699B 1002 Pegler Sunvic A/27 MFFI - A/27 MFFI Link L-5-8 SP 50/100 (Link L-3) Genus 23-27-30 MFFI ST 6400/ST 6300 ST 6200 3 Switchmaster Genus 27 RFFI System Symphony, Sonata Drayton Tempus 7 Switchmaster 400, 600 Horstmann 425, 525, 527 Link L-2-5 SWITCHMASTER 805, 900 Landis &...
  • Page 28 Honeywell ST 699B 1002 Pegler Sunvic A/27 MFFI - A/27 MFFI Link L-5-8 SP 50/100 (Link L-3) Genus 23-27-30 MFFI ST 6400/ST 6300 ST 6200 Switchmaster Genus 27 RFFI System Symphony, Sonata Drayton Tempus 7 Switchmaster 400, 600 Horstmann 425, 525, 527 Link L-2-5 SWITCHMASTER 805, 900 Landis &...
  • Page 29 NOTES B004...
  • Page 30 NOTES B004...
  • Page 31 B004...
  • Page 32 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 Technical Service Hotline: (01494) 539579...

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