Ariston Type C Installation Instructions Manual
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Ariston Type C Installation Instructions Manual

Ariston Type C Installation Instructions Manual

Type c boilers g.c.n. 47-116-14 47-116-15
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Installation
Instructions
Type C Boilers
G.C.N: 47-116-14
47-116-15
LEAVE THESE INSTRUCTIONS
WITH THE END-USER
Country of destination: GB

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  • Page 1 Installation Instructions Type C Boilers G.C.N: 47-116-14 47-116-15 LEAVE THESE INSTRUCTIONS WITH THE END-USER Country of destination: GB...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS GENERAL INFORMATION 1.1 G ENERAL NSTRUCTIONS 1.2 O VERALL INSTALLATION 2.1 R EFERENCE TANDARDS 2.2 S ITING THE PPLIANCE 2.3 O VERALL IMENSIONS 2.4 C LEARANCES 2.5 M OUNTING THE PPLIANCE 2.6 E LECTRICAL ONNECTION 2.7 G ONNECTION 2.8 W ATER...

  • Page 3: Eneral Instructions

    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 important User’s Manual...

  • Page 4: Verall View

    5 - If called for by point. 3, dismantling and cleaning of the combustion chamber. 6 - If called for by point. 4, dismantling and cleaning of the burner jets. 7 - Visual check of the primary heat exchanger: check for overheating in the blade assembly; clean the exhaust fan if needed.

  • Page 5: Installation

    This appliance is not suitable for outdoor installation. The type C appliances (in which the combustion circuit, air vent intake and combustion chamber are air-tight with respect to the room in which the appliance is installed) can be installed in any type of room.

  • Page 6: Verall Dimensions

    VERALL IMENSIONS EGEND A = Central Heating Flow (3/4”) B = Domestic Hot Water Outlet (1/2”) C = Gas Inlet (3/4”) D = Domestic Cold Water Inlet (1/2”) E = Central Heating Return (3/4”) LEARANCES In order to allow for access to the interior of the boiler for maintenance pur poses, the boiler must be installed in compliance with the minimum clearances indicated in F .

  • Page 7: As Connection

    marked “L”. Note: The diagrams for the electrical system are indicated in section 2.11. Warning, this appliance must be earthed. External wiring to the appliance must be carried out by a qualified technician and be in accordance with the current I.E.E. Regulations and applicable local regulations.
  • Page 8 Copper tubing to BS EN 1057:1996 is recommended for water pipes. Jointing should be either with capillary soldered or compression fittings. Where possible pipes should have a gradient to ensure air is carried naturally to air release points and water flows naturally to drain taps. The appliance has a built-in automatic air release valve, however it should be ensured as far as possible that the appliance heat exchanger is not a natural collecting point for air.

  • Page 9: Lue Connection

    YSTEM ONNECTIONS The provision for satisfactory flue termination must be made as described in BS 5440-1. The appliance must be installed so that the flue terminal is exposed to outdoor air. The terminal must not discharge into another room or space such as an outhouse or lean-to.
  • Page 10 In addition, it is also possible to use a split (twin pipe) system by fitting a special adaptor to the flue connector and using the aperture for the air vent intake located on the top part of the combustion chamber. To utilise the air intake it is necessary to: 1.
  • Page 11 23 MFFI ABLE Exhaust Restrictor Restrictor Maximum Risk of Condensation Forming ø 41 mm ø 47 mm Extension Type Piping not insulated Piping insulated Exhaust/Air ø 41 ø 47 ø 41 ø 47 restrictor restrictor C12 (xx) Coaxial L min = 0.5 m L min = 2 m L = 4 m NONE...

  • Page 12: Room Thermostat Connection

    In calculating the lengths of the pipes, the maximum length “L” must also take into consideration values YSTEMS exhaust/air intake end terminals, as well as 90° elbows for coaxial systems. The C52 types must comply with the following requirements: 1 - The exhaust/ air intake pipes must have the same diameter of 80 mm.
  • Page 13 2.12 LECTRICAL IAGRAM Circulation Pump EGEND Spark Generator/Gas Valve Supply = Time Clock Connector Motorised Diverter Valve = Central Heating Selection (Winter) and Flame Detection Circuit Temperature Adjustment Detection Electrode = Connector for Total Check System Main Circuit Temperature Probe = Domestic Hot Water Temperature Adjustment Domestic Hot Water Temperature Probe = Soft-light Adjustment...

  • Page 14: Water Circuit Diagrams

    . 2.13 2.13 ATER IRCUIT IAGRAM EGEND . 2.14 Main Heat Exchanger Overheat Thermostat Burner Ignition Electrodes Detection Electrode Motorised Valve Main Circuit Temperature Probe Main Circuit Flow Switch 10. Automatic By-pass 11. Domestic Hot Water Temperature Probe 12. Secondary Heat Exchanger 13.

  • Page 15: Commissioning

    COMMISSIONING MTS (GB) Limited support the initiative. Within the information pack NITIAL REPARATION you will find a copy of the logbook. It is important that this is completed in the presence of your customer, they are shown how to us it, and it is signed by them.

  • Page 16: Ontrol Panel

    ONTROL ANEL EGEND 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”...

  • Page 17: Nitial Start Up

    HE CHECKS TO BE RUN BEFORE INITIAL START UP ARE AS FOLLOWS 3.4. I NITIAL TART 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 appropriate level;...

  • Page 18: Ombustion Analysis

    readings can be The flue connector has two apertures, OMBUSTION NALYSIS taken for the temperature of the combustion by-products and of the combustion air, as well as of the concentrations of O and CO , etc. To access these intakes it is necessary to unscrew the front screw and remove the metal plate with sealing gasket.

  • Page 19: Raining The System

    5. A FROST DEVICE The boiler is equipped with a device that, in the event of the water temperature going below 5°C, the 3-way diverter valve switches to domestic hot water and the burner ignites at the minimum power until the boiler water reaches a temperature of about 50°C.

  • Page 20: Gas Adjustments

    GAS ADJUSTMENTS Liquid Butane Gas Liquid Propane Gas CATEGORY II2H3+ Methane Gas MJ/m 3 h Lower Wobbe Index (15°C;1013mbar) 45.67 80.58 80.58 Nominal Delivery Pressure mbar Minimum Delivery Pressure mbar 23 MFFI Main Burner: n. 13 jets (ø) 1.30 0.77 0.77 Consumption (15°C;...

  • Page 21: Maintenance

    MAINTENANCE It is recommended that the following inspections be carried out on the boiler at least once a year: 1 - Check the seals for the water connections; replacement of any faulty seals. 2 - Check the gas seals; replacement of any faulty gas seals. 3 - Visual check of the entire unit.

  • Page 22: Miscellaneous

    MISCELLANEOUS IRING IAGRAM FOR EATING ONES BROWN BOILER ELECTRICAL SUPPLY CABLE BLUE GREY ORANGE Remove internal time clock plug from the the P.C.B. then connect GREEN/YELLOW TYPICAL room stat terminal block on the JUNCTION BOX V4043H reverse of the boiler control panel VALVE (see section 2.10) to 9 + 10 on •...
  • Page 23 IRING IAGRAM FOR ONNECTION TO AN RISTON NVENTED YLINDER BOILER ELECTRICAL SUPPLY CABLE Remove internal time clock plug T6360B from the the P.C.B. then connect TYPICAL ROOM room stat terminal block on the THERMOSTAT JUNCTION BOX reverse of the boiler control panel BROWN (see section 2.10) to 9 + 10 on •...

  • Page 24: Technical Information

    TECHNICAL INFORMATION 23 MFFI 27 MFFI CE Certification 63AU4549 63AU4549 Heat Input max/min kW 25.6/11.0 29.8/12.0 Heat Output max/min kW Efficiency of Nominal Heat Input 92.9 93.5 Efficiency at 30% of Nominal Heat Input 91.1 90.7 Heat Loss to the Casing (∆T=50°C) Flue Heat Loss with Burner Operating Flue Heat Loss with Burner Off Maximum Discharge of Fumes (G20)
  • Page 25 Servicing Instructions Type C Boilers G.C.N: 47-116-14 47-116-15 LEAVE THESE INSTRUCTIONS WITH THE END-USER Country of destination: GB...
  • Page 26 TABLE OF CONTENTS SERVICING INSTRUCTIONS EPLACEMENT OF ARTS ENERAL CCESS - Removing the front panel - Removing the sealed chamber frontal cover - Removing the side panels CCESS TO THE OMBUSTION HAMBER - Removing the combustion cover - Removing the burner and jets - Removing the electrodes - Removing the main heat exchanger - Removing the air pressure switch...

  • Page 27: Servicing Instructions

    2. The control panel moves downward and when pulled forward, SERVICING INSTRUCTIONS rotates on two lateral hinges; the panel stays in a semi- horizontal position, which allows access to the inner parts of To ensure efficient safe operation, it is recommended that the the boiler (F .

  • Page 28: Removing The Sealed Chamber Frontal Cover

    Removing the sealed chamber frontal cover Removing the side panels 1. Remove the screws “C” (F . 1.6); 1. Remove the four screws “D” for each side panel (F .1.8); 2. Lift the sealed chamber frontal cover from the locating pins 2.

  • Page 29: Access To The Combustion Chamber

    CCESS TO THE OMBUSTION HAMBER Removing the combustion cover 1. Remove the screws “E” (F . 1.10); 2. Lift off the combustion cover. Fig. 1.12 78 eps Removing the electrodes Before carrying out this procedure, unscrew and slide the burner forward (see previous section). 1.

  • Page 30: Removing The Main Heat Exchanger

    3. Remove screw “H” (F . 1.15); Removing the main heat exchanger 4. Gently slide the electrode downward (F . 1.16). 1. Drain the boiler of water; 2. Release the overheat thermostat sensor “I” (F . 1.17); 3. Release the two connection nuts “J” connecting the exchanger to the flow and return pipes (F .

  • Page 31: Removing The Air Pressure Switch

    Removing the air pressure switch Removing the fan 1. Disconnect the electrical connections “K” and silicon pipes 1. Disconnect electrical connections “N” and silicon pipes “L” from their connection points (F . 1.20); “O” (F .1.23); 2. Remove screws “M” on the top of the sealed chamber 2.

  • Page 32: Ervicing And Emoval Of The As Alve

    ERVICING AND EMOVAL OF THE ALVE Setting the minimum and the maximum power of the boiler Setting the gas pressures 1. Check that the supply pressure to the gas valve is a minimum of 20 mbar for natural gas. 2. To do this, remove the screw “A”. Fit the pipe of the pressure gauge to the pressure connection of the gas valve “B”.
  • Page 33 Regulating the heating power for natural gas (G20) model 23 model 27 CG007A Regulating the heating power for butane gas (G30) model 23 model 27 CG008A Regulating the heating power for propane gas (G31) model 23 model 27 CG009A “A” ABLE 2.01 Kg/h 2.00 Kg/h...

  • Page 34: Removing The Spark Generator

    Removing the spark generator 1. Disconnect ignition leads “T” by pulling upward . 1.27); 2. Remove the screw “V” (F . 1.28); 3. Remove the spark generator (F . 1.29). 61.eps Soft-light Max Heating Adjustment Adjustment VR015A.eps . 1.27 45.eps 10.

  • Page 35: Removing The Gas Valve

    Removing the gas valve CCESS TO THE ATER IRCUIT 1. Disconnect all the cables from the solenoid and Important! Before any component is removed, the boiler modureg; must be drained of all water. 2. Remove the spark generator (see previous section); 3.

  • Page 36: Removing The Safety Valve

    Removing the safety valve Removing the main circuit flow switch 1. Loosen nut “Z” (F . 1.36); 2. Unscrew and remove the valve (F . 1.37). 1. Remove the cable of the main circuit flow switch “B1” . 1.40); 2. Remove the screws “C1” (F .

  • Page 37: Removing The Pump

    Removing the pump 1. Remove the U-clip “ D1” (F . 1.41); 2. Remove the retaining clip “E1” (F . 1.42); 3. Remove the U-clip “ F1” (F . 1.43); 4. Release the nut “G1” (F . 1.44); 5. Remove the pipe “H1” (F .

  • Page 38: Removing The Pressure Gauge

    Removing the pressure gauge Removing the expansion vessel 1. Remove the U-clip “J1” and remove the pressure gauge 1. Loosen nuts “K1” and remove the gas pipe (F . 1.50); coupling (F . 1.48); 2. Loosen nut “L1” (F . 1.51); 2.

  • Page 39: Removing The Overheat Thermostat

    Removing the overheat thermostat Removing the D.H.W. temperature sensor (N.T.C.) 1. Disconnect overheat thermostat electrical 1. Pull off the electrical connector “Q1” and unscrew the connections “N1” (F . 1.54); sensor probe using a suitable spanner (F . 1.57). 2. Then remove the thermostat from its mounting by releasing the securing clip (F .

  • Page 40: Access To The Control System

    Removing the time clock CCESS TO THE ONTROL YSTEM 1. Unplug electrical connection “W1” from the clock (F Checking the fuses 1.62); 2. Remove the screws “W2” (see fig. 1.63); 1. Remove the inspection cover on the reverse of the 3.

  • Page 41: Removing The P.c.b

    Removing the P.C.B. 1. Isolate electricity; 2. Remove the inspection cover from the reverse of the control panel; 3. Unplug all electrical connections from the P.C.B. (F 1.65); 4. Remove the screws “X1” (F . 1.66); 5. Separate the facia panel from the rear of the control panel (F .

  • Page 42: Fault Finding

    FAULT FINDING It is possible to detect and correct any defect by using the standard fault AULT INDING UIDE finding diagrams described in this chapter. CHARTS PRELIMARY CHECKS MAKE SURE THAT: 1 - There is sufficient water in the system 2 - The gas is turned on 3 - The electrical supply is turned on...
  • Page 43 IS THE PUMP RUNNING? POWER TO THE PUMP? DOES THE "NO WATER" L.E.D. ILLUMINATE 1 - Check pump cable (WITHIN 40 SECS)? 2 - Check/replace P.C.B. 1 - Check if there is air in the 3 - Check main flow main system switch operation when 2 - Check main circuit flow switch...
  • Page 44 IS THE FAN RUNNING? BOILER 1 - Reset the boiler SHUTDOWN? 1 - Check/replace main circuit flow switch PUMP PROTECTION 2 - Check/replace ACTIVATED? connection cable 3 - Check/replace P.C.B. 1 - Check/replace air INTERNAL pressure switch P.C.B. PROTECTION 2 - Check if reset button ACTIVATED? is jammed 3 - Check/replace flame...
  • Page 45 IS THE AIR PRESSURE SWITCH ACTIVATED? CHECK ∆ ∅ P 1.2 mbar 1 - Check A.P. switch cable ∆P ON TEST 2 - Check/replace A.P. switch PRESSURE 3 - Check/replace P.C.B. INTAKE ≤ ∆ 1 - Check exhaust discharge P 1.2 mbar 2 - Check venturi &...
  • Page 46 FAULTS POSSIBILE CAUSES Drawing D.H.W: THERE STILL - air in secondary heat exchanger When you turn on a tap A PROBLEM? - faulty main circuit flow switch burner switches off - faulty D.H.W. flow switch Drawing D.H.W: - faulty 3-way valve radiators heat up in summer mode Drawing D.H.W: - check C.H./D.H.W.

  • Page 47: Electrical Diagrams

    EGEND ELECTRICAL = Time Clock Connector DIAGRAMS = Central Heating Selection (Winter) and Temperature Adjustment = Connector for Total Check System = Domestic Hot Water Temperature Adjustment = Soft-light Adjustment = Maximum Heating Adjustment = On/Off Switch = On/Off L.E.D. = Fume Sensor L.E.D.
  • Page 48 microGENUS 23/27 MFFI SE017A SF014A B063...

  • Page 49: Short Spare Parts List

    SHORT SPARE PARTS LIST microGENUS 23/27 MFFI 14 18 20 21 32 33 code 998613 codes 998836 code 998940 999091 code 998099 code 997089 MODELS CHARACTERISTICS SERIAL NO: REF. VALIDITY MICROGENUS 23 MFFI METHANE 2320005600001 MICROGENUS 23 MFFI 2320005600001 MICROGENUS 27 MFFI METHANE 2320005600001 MICROGENUS 27 MFFI...
  • Page 50 23/27 MFFI G.C. part ARISTON Description Part No. E61 468 379816 Expansion vessel 998616 573521 164 282 Gasket 3/8" 998077 E61 475 O-ring 573520 164 225 Gasket 3/4" 997147 E25 427 Motor (3- Way valve) 997077 E61 429 Fixing clip (motor)
  • Page 52 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...
  • Page 53 Users Manual...
  • Page 54 Dear Customer, The guarantee on this appliance is valid for 24 months from the first Thank you for choosing an ARISTON day of installation. boiler. We guarantee that your boiler is a reliable Repairs to the electric, hydraulic and technically sound product.
  • Page 55 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.”...

  • Page 56: General Information

    1. G use. ENERAL NFORMATION Do not allow children or inexperienced persons to use the appliance without MTS (GB) Limited support the supervision. initiative. 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...

  • Page 57: Technical Information

    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...

  • Page 58: Control Panel

    ONTROL ANEL 23/27 MFFI...
  • Page 59 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.

  • Page 60: Operating Instructions

    2. 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...
  • Page 61 value. 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.
  • Page 62 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. RESET UT011Aa UT011Aq illuminate indicating that the boiler is...
  • Page 63 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.
  • Page 64 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.
  • Page 65 The comfort mode is a special URNING OFF THE BOILER operating state, because the water contained in the secondary exchanger To turn the boiler off, rotate the selector and in the primary exchanger is kept in knob “A” to the “0” position (OFF); the a preheated condition, thereby allowing respective green L.E.D.

  • Page 66: Useful Information And Troubleshooting

    L.E.D. “F” will illuminate. In order to 3. USEFUL INFORMATION reset the ignition, the button “H” must be pressed and released. Should the AND TROUBLESHOOTING boiler fail to ignite a second time, check that the external gas cock is open. If the OILER SHUTDOWN SITUATIONS problem persists,...
  • Page 67 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 UT011Al state is an insufficient The boiler is fitted with safety devices,...

  • Page 68: Maintenance

    4. 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...

  • Page 69: Time Clock

    inside (off setting) to the outside of the 6. TIME CLOCK 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...
  • Page 70 clock border; on and will only shut off upon the - pull outward the riders for 7.00 am request of the room thermostat (if and 9.30 am, and then all riders installed) or the heating thermostat; between these two; - repeat this for 7.00 pm and 10.00 2.
  • Page 71 ECHNICAL Ambient temperature: - 10°C to + 55°C Running reserve: 150 h (not for 1.5 V DC) Shortest switching time: 15 minutes Programmable: Every 15 minutes...
  • Page 72 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 Hot Line: (01494) 539579...
  • Page 73 SPARE PARTS EXPLODED VIEW WALL-HUNG GAS BOILERS Models microGENUS 23 MFFI microGENUS 27 MFFI Edition 2 Current from Serial No:- 2320005600001to 2320021400002...
  • Page 74 14 18 20 21 32 33 code 998613 codes 998836 code 998940 999091 code 998099 code 997089 MODELS CHARACTERISTICS SERIAL NO: REF. VALIDITY MICROGENUS 23 MFFI METHANE 2320005600001 MICROGENUS 23 MFFI 2320005600001 MICROGENUS 27 MFFI METHANE 2320005600001 MICROGENUS 27 MFFI 2320005600001 - 2 -...
  • Page 75 PART. CODE DESCRIPTION REF. NOTE ------ Frame 998616 Expansion vessel 998776 Bush 998581 3/8" lock nut 573521 Gasket 3/8" 999102 Pipe (expansion vessel) 998580 Cable holder ------ Hydraulic group support 570717 Spring (fastening) 998569 Pivot 998589 By-pass pipe 998077 O-ring gasket 998064 Spring (by-pass pipe) 573520 Gasket 3/4"...
  • Page 76 PART. CODE DESCRIPTION REF. NOTE 998943 O-ring (2.65x10.27) 999135 Panel (insulation - fan) 998566 Fixing clamp (fan) 998601 Fixing plate (fan) 998894 Fan 999204 Fan 998640 Panel (insulation - rear) 998896 Panel (insulation - rear) 998600 Panel (combustion chamber - L/H side) 998964 Panel (combustion chamber - L/H side) 998639 Panel (insulation - side) 997206 Thermostat (overheat)
  • Page 77 PART. CODE DESCRIPTION REF. NOTE 997029 Operator coils (Sit Sigma) 998490 Central heating by-pass kit 998718 3-Way spring kit (C.H.) 998975 3-Way spring kit (D.H.W.) 998974 Heating actuator bush 998644 O-ring (A.A.V.) 998643 Auto Air Vent 998738 Gasket (pump head) 998961 Pump head 999207 Pump head 571547 Diaphragm (main flow switch)

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