Download Ariston GENUS 27 RFFI SYSTEM Installation manual
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Servicing 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 Supplied By www.heating spares.co Tel. 0161 620 6677 TABLE OF CONTENTS Page No. 1. SERVICING INSTRUCTIONS 1.1 Replacement of Parts 3 1.2 To Gain General Access - Removing the Front Panel - Removing the Bottom Cover - Removing the Side Panels 3 4 4 1.3 Access to the Combustion Chamber - Removing the Sealed Combustion Chamber - Removing the Burner and Injectors - Removing the Electrodes - Removing the Main Heat Exchanger - Removing the Air Pressure Switch - Removing the Venturi Device - Removing the Fan 5 5 6 7 7 8 8 1.4 Servicing and Removal of the Gas Valve - Setting Gas Pressure - Removing the Spark Generator (SIT Sigma Gas Valve) - Removing the Spark Generator (SIT Tandem Gas Valve) - Removing the Gas Valve 10 12 13 14 1.5 Access to the Hydraulic Circuit - Removing the D.H.W. (Secondary) Exchanger - Removing the Safety Valve - Removing the Automatic Air Vent - Removing the Main Flow Circuit Switch - Removing the Pump - Removing the Pressure Gauge - Removing the Expansion Vessel - Removing the Overheat Thermostat - Removing the Heating Temperature Sensor (N.T.C.) - Removing the D.H.W. Temperature Sensor (N.T.C.) - Removing the Diverter Valve (Genus 27 RFFI Only) 14 15 15 15 16 16 17 17 17 18 18 1.6 Access to the Control System - Checking the Fuses - Removing the Time Clock - Removing the P.C.B.s 19 19 20 2. FAULT FINDING 2.1 Fault Finding Guide (Flow-chart) 2.2 Fault Finding Using the Total Check System 21 26 3. ELECTRICAL DIAGRAMS 3.1 Electrical Connection 3.2 Functional Flow Connection 27 29 4. SHORT SPARE PARTS LIST 30 2 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 1. SERVICING INSTRUCTIONS To ensure efficient safe operation, it is recommended that the boiler is serviced annually by a competent person. Before starting any servicing work, ensure both the gas and electrical supplies to the boiler are isolated and the boiler is cool. Before and after servicing, a combustion analysis should be made via the flue sampling point (please refer to the Installation Manual for further details). After servicing, preliminary electrical system checks must be carried out to ensure electrical safety (i.e. polarity, earth continuity, resistance to earth and short circuit). 1.1 Replacement of Parts The life of individual components vary and they will need servicing or replacing as and when faults develop. The fault finding sequence chart in chapter 2 will help to locate which component is the cause of any malfunction, and instructions for removal, inspection and replacement of the individual parts are given in the following pages. 1.2 To Gain General Access All testing and maintenance operations on the boiler require the control panel to be lowered. This will also require the removal of the casing. To dismantle the front part of the casing, proceed as follows: 1. Loosen the two screws “A” located on the bottom part of the boiler until the first thread on the screws appears (Fig. 1.1); 2. Lift the front panel up until it stops with a click and remove the front panel from the rest of the casing (Fig. 1.2); 4. Unhook the two cords from the locating slots (Fig. 1.3). Fig. 1.3 A Fig. 1.1 Fig. 1.2 3 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 Removing the bottom cover 1. Remove the screws “B” B Fig. 1.4 Removing the side panels 1. Remove the screws “C”; 2. Pull the panel away from the boiler, then lift the panel up and away from the boiler. C C C Fig. 1.5 4 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 1.3 Access to the Combustion Chamber Removing the sealed chamber frontal cover D Removing the combustion cover D E E E Remove the screws “D” E D D E E E Remove the screws “E” Fig. 1.6 Removing the burner and the injectors Fig. 1.7 1. Remove the side panels of sealed chamber (fig. 1.8); 2. Remove the screws “F” of the burner (see fig. 1.9); 3. Remove the burner (see fig. 1.10); 4. Remove the injectors using a No. 7 socket spanner; 5. Replace in reverse order. push F Fig. 1.9 push Fig. 1.8 Fig. 1.10 5 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 Removing the electrodes 1. Remove rubber gasket “G” (see fig. 1.11); 2. Disconnect ignition leads by pulling downward (see fig. 1.12); 3. To remove the flame sensor disconnect the cable at its only connection point close to the P.C.B. (see fig. 1.13); Fig. 1.12 G Fig. 1.13 Fig. 1.11 5. Remove screw “H” using a Philips No. 2 star tip screwdriver (see fig. 1.14); 6. Slide the electrode gently downward (see fig. 1.15). H Fig. 1.14 Fig. 1.15 To replace, repeat the steps in reverse order, paying particular attention to the following: a - Centre the electrode in the positioning hole carefully, otherwise the electrode may break; b -Check that the cables have been connected correctly; c - Check that the rubber gasket covers the cable/electrode connection point completely. 6 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 Removing the main heat exchanger 1. Drain the boiler of water; 2. Release the two connection nuts “I” connecting the exchanger to the flow and return pipes (see fig. 1.16); 3. Pull it straight out (see fig. 1.17). I Fig. 1.17 Fig. 1.16 Removing the air pressure switch 1. Disconnect the electrical connections “K” and silicone pipes “L” from their connection points (see fig. 1.18); 2. Remove screws “J” on the top of the sealed chamber (see fig. 1.19); Use a No. 2 star tip screwdriver to remove the switch from the plate. J L J K L Fig. 1.18 Fig. 1.19 7 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 1. Disconnect the silicone pipes “M” and remove the screw “N” (see fig. 1.20); 2. Extract the venturi (see fig. 1.21). Removing the venturi device N M Fig. 1.20 Fig. 1.21 Removing the fan 1. Disconnect electrical connections and remove screws “O” using a No. 2 star tipped screwdriver (see fig.1.22); 2. Pull fan to the right and forward and remove (see fig.1.23); 3. Remove fan from mounting plate; 4. Remove screws “P” (see fig.1.24). O O Fig. 1.22 P P Fig. 1.23 8 Fig. 1.24 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 1.4 Servicing and Removal of the Gas Valve SIT SIGMA SIT TANDEM 1 1 B B A A 2 2 D D C C 3 3 E E 4 4 F F 9 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 Setting gas pressures Setting the minimum and the maximum power of the boiler 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”. When you have completed this operation, replace the screw “A” securely into its housing to seal off the gas. 3. To check the pressure supplied by the gas valve to the burner, remove the screw “C”. Fit the pipe of the pressure gauge to the pressure outlet of the gas valve “D”. Disconnect the compensation pipe either from the gas valve or from the sealed chamber. 4. Set the On/Off button to position < I > and the "summer/winter" switch to the winter position. To set the maximum power, turn on the hot water tap and allow the hot water tap to run at a rate of about 8 litres/minute so that the main burner lights. Adjust nut “E” on the modureg to set the gas pressure (displayed on the pressure gauge) corresponding to the maximum power (see table “A” page 11). 5. To set the minimum power, disconnect a supply terminal from the modureg and adjust screw “F”. Turn the screw clockwise to increase the pressure and counter-clockwise to decrease the pressure (displayed on the pressure gauge) corresponding to the minimum power (see table “A” page 11). 6. When you have completed the above operations, turn off the hot water tap, re-connect the supply terminal to the modureg on the gas valve and replace the cap on the screw of the modureg. Setting the maximum heating circuit power 7. To set the maximum heating circuit power, place the On/Off button to position < I > and the "summer/winter" switch to winter position. Turn the knob of the heating thermostat clockwise to maximum; 8. Remove the left hand inspection panel of the P.C.B. and fit a small cross-head screwdriver in to the right hand potentiometer. Turn clockwise to increase the pressure or counter-clockwise to reduce the pressure. Adjust the setting to the required heating pressure value (displayed on the pressure gauge), as indicated in the diagrams shown in page 11. 9. Turn off the boiler by placing the main switch to the "Off" position. Setting pressure for soft ignition. Disconnect the detection electrode connection from the P.C.B. (see fig. 1.13). Start the boiler and during the ignition sequence adjust the centre potentiometer until the gas pressure reads the required gas pressure as per the table below. Once the gas pressure is set turn off the boiler and reconnect the connection to the P.C.B. NB.: It may be necessary to reset the flame failure reset a number of times during this operation. Recommended pressure for slow ignition NATURAL GAS (G20) BUTANE GAS (G30) PROPANE GAS (G31) 5 mbar - 1.95 in w.g. 18 mbar - 7.0 in w.g. 19 mbar - 7.4 in w.g. 10 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 Regulating the heating power for natural gas (G20) model 23 model 27 Regulating the heating power for butane gas (G30) model 23 model 27 Regulating the heating power for propane gas (G31) 40 38 36 34 model 23 model 27 TABLE “A” 11 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 10. Remove the pipe from the pressure gauge and connect screw “C” to the pressure outlet in order to seal off the gas. 11. Carefully check the pressure outlets for gas leaks (valve inlet and outlet). IMPORTANT! Whenever you disassemble and reassemble the gas connections, always check for leaks using a soap and water solution. Anti-cycling Device Soft-light Adjustment Max Heating Adjustment Setting the anti-cycling device This appliance is equipped with a potentiometer which delays the ignition of the heating control and is situated on the P.C.B. (see the electrical diagrams). By adjusting the potentiometer, it is possible to change the time interval between the burner shutting down and its next ignition. It is preset at 1 minute and can be adjusted from 0 to 2 minutes. Use this control in particular situations where continuous shutting down and ignition of the main burner occurs. Removing the spark generator (SIT Sigma gas valve) 1. Disconnect ignition leads “Q” by pulling upwards (see fig. 1.25); 2. Remove the screws “R” (see fig. 1.26) with a Pozidrive No. 2 star tip screwdriver; 3. Remove the spark generator. Q Fig. 1.25 R Fig. 1.26 12 Fig. 1.27 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 Removing the spark generator (SIT Tandem gas valve) 1. Disconnect ignition leads “Q1” by pulling upwards (see fig. 1.28); 2. Remove the screws “R1” (see fig. 1.29) with a Pozidrive No. 2 star tip screwdriver; 3. Remove the spark generator. Q1 Fig. 1.28 R1 R1 Fig. 1.29 Fig. 1.30 13 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 Removing the gas valve 1. Disconnect all the cables from the solenoid and modureg; 2. Remove the spark generator; 3. Release the top nut “S” using a 30 mm open ended spanner (see fig. 1.31); 4. Remove the screws “T” from the bottom of the gas valve pipe (see fig. 1.32). Attention!! The gas valve is connected with the two pipes (as shown) with an O-ring connection. S T 1.5 Fig. 1.31 Fig. 1.32 Fig. 1.33 Fig. 1.34 Access to Hydraulic Circuits U T Important! Before any component is removed, the boiler must be drained of all water. Removing the D.H.W. (secondary) exchanger 1. Remove the screw “U” (see fig. 1.35); 2. Push the exchanger towards the rear of the boiler, lift upwards and remove out of the front of the boiler; 3. Before replacing the exchanger ensure that the O-rings are in good condition and replace if necessary. U Fig. 1.35 14 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 Removing the safety valve 1. Loosen nut “V” (see fig. 1.36); 2. Remove the valve. V Fig. 1.36 Removing the automatic air vent 1. Unscrew valve “W” (see fig. 1.37). W Fig. 1.37 Removing the main circuit flow switch 1. Remove the cable of the main circuit flow switch “Y”; 2. Remove the screws “Y1” (see fig. 1.38); 3. Remove the main circuit flow switch. Y Y1 Y1 Fig. 1.38 15 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 Removing the pump 1. Unscrew “Z” and remove the electrical connection (see fig. 1.39); 2. Release the nuts “A1” and remove the pump (see fig. 1.40). A1 Z A1 Fig. 1.39 Fig. 1.40 Removing the pressure gauge 1. Remove the pressure gauge cover by pulling (see fig. 1.41); 2. Release coupling “A2” using a 14 mm open ended spanner (see fig. 1.42); 3. Push the pressure gauge through the control panel from the rear (see fig. 1.43). Fig. 1.41 A2 Fig. 1.42 16 Fig. 1.43 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 Removing the expansion vessel 1. Remove nut “A3” away from the expansion vessel (see fig. 1.44); 2. Remove nut “A4” (see fig. 1.45); 3. Remove expansion vessel (see fig. 1.46). A3 Fig. 1.44 A4 Fig. 1.45 Fig. 1.46 Removing the overheat thermostat 1. Remove the electrical connector by the overheat thermostat (see fig. 1.47); 2. Pull off the thermostat connections. Then remove the thermostat from the pipe by releasing it’s securing clip. Fig. 1.47 Removing the heating temperature sensor (N.T.C.) 1. Remove the electrical connector by pulling off the thermostat connections and unscrewing the sensor probe with a 14 mm open ended spanner (see fig. 1.48). Fig. 1.48 17 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 Removing the D.H.W. temperature sensor (N.T.C.) 1. Remove the electrical connector by pulling off the thermostat connection and unscrew the sensor probe with a 14 mm open ended spanner (see fig. 1.49). Fig. 1.49 Removing the diverter valve (Genus 27 RFFI only) 1. Remove the circlip and pull the diverter valve to the left. Fig. 1.50 18 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 1.6 Access to the Control System Checking fuse 1. Remove the right hand inspection cover (see fig. 1.51); 2. Remove fuse (see fig. 1.52). Fig. 1.51 Fig. 1.52 Removing the time clock 1. Remove left hand inspection cover (see fig. 1.53); 2. Remove electrical connection “A5” of the clock (see fig. 1.54); 3. Unscrew “A6” and remove (see fig. 1.55). N.B. It is possible to by-pass the time clock in the event of failure by simply unplugging the electrical connection from the P.C.B. (see fig. 1.54). This will revert control of the central heating to the room stat connection on the reverse of the control panel. Fig. 1.53 A5 A6 A5 A6 Fig. 1.49 Fig. 1.50 19 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 A7 A7 A7 Removing the P.C.B.s 1. Isolate electricity; 2. Remove the front cover of the boiler; 3. Remove both left and right inspection panels; 4. Remove the pressure gauge cover; 5. Remove the mounting screws “A7’ (see fig. 1.51); 6. Disconnect the connection cable”A8” (see fig. 1.52); 7. To remove the 24V P.C.B.: remove the electrical plug connectors and screws “A9” (see fig. 1.53); 8. To remove the 240V P.C.B.: remove the electrical plug connectors and screws “A10” (see fig. 1.54); 9. Replace either P.C.B. in reverse order. A7 Fig. 1.51 A9 A8 A9 A10 A10 A8 Fig. 1.52 Fig. 1.53 20 Fig. 1.54 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 2. 2.1 FAULT FINDING Fault Finding Guide (Flow-chart) It is possible to detect and correct any defect by using the standard fault finding diagrams described in this chapter. Preliminary Checks Make sure that: 1) There is sufficient water in the system 2) The gas is turned on 3) The electricity to the boiler is on Press the On / Off Button HAS THE LIGHT fOR THE POWER SUPPLY COME ON? NO 1) Check the fuses 2) Check the power supply cord, plug and outlet 3) Check/replace the power supply P.C.B. YES SETTING FOR THE OPERATING MODE SUMMER WINTER FUME DISCHARGE TEST IS HOT WATER BEING DEMANDED? NO YES YES IS HOT WATER BEING DEMANDED? NO NO FOR BOILERS EQUIPPED WITH AN ELECTRONIC ANT-FREEZE SYSTEM: HAS THE SAFETY BEEN TRIGGERED TO ACTIVATE THE DEVICE? (T sensor <5˚C) DO THE TIME CLOCK AND/OR R O O M THERMOSTAT NEED TO BE ACTIVATED YES YES NO YES FOR BOILERS EQUIPPED WITH AN ELECTRONIC ANT-FREEZE SYSTEM: HAS THE SAFETY BEEN TRIGGERED TO ACTIVATE THE DEVICE? (T sensor <5˚C) NO A 21 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 A DOES THE CIRCULATION PUMP COME ON? NO YES POWER TO THE PUMP? YES 1) Check for air in the system 2) Check the pressure switch for activating pump 3) Check/replace pressure gauge and refill the the system properly DOES THE INSUFFICIENT WATER INDICATOR LIGHT COME ON? (within 40 sec.) NO 1) Turn the boiler off and then back on again (safety reset) NO YES 1) Check to see if pump is stuck 2) Replace circulation pump 1) Check wiring 2) Check/replace wire to P.C.B. 3) Replace power supply P.C.B. 4) Replace control P.C.B. 5) Check microswitch when hot water is requested. B 22 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 B DOES THE FAN COME ON? YES NO BOILER SHUTDOWN? YES 1) Reset the boiler YES 1) Check/replace differential pressure switch for pump 2) Check/replace wiring 3) Check/replace P.C.B. wire 4) Check/replace power supply P.C.B. 5) Check/replace control P.C.B. YES 1) Check/replace air pressure switch/wiring 2) Check whether reset button is stuck 3) Check/replace flame detection electrode NO C PUMP SAFETY DEVICE ACTIVATED? NO INTERNAL SAFETY DEVICE FOR PCB ACTIVATED? NO IS THERE POWER TO THE FAN? YES NO 1) Check/replace wiring 2) Check/replace P.C.B. wire 3) Check/replace power supply P.C.B. 4) Check/replace control P.C.B. 5) Check/replace air pressure switch 1) Replace fan 23 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 C IS THE AIR PRESSURE SWITCH ACTIVATED? NO YES ARE THE FUMES DISCHARGED CORRECTLY? NO 1) Check flue discharge 2) Check venturi & small pipes 3) Check wire for air press.switch 4) Check/replace air press. switch 5) Check/replace P.C.B.wire 6) Check/replace power P.C.B. 7) Check/replace control P.C.B. 1) Check/replace ignition electrodes 2) Check wiring 3) Check spark generator 4) Check small wire 5) Check power supply P.C.B. 6) Check control P.C.B. YES DOES THE BURNER LIGHT? NO 1) Check supply of gas to gas valve 2) Check power supply P.C.B. 3) Check control P.C.B. 4) Check functionality of the gas valve YES 1) Check whether flame detection electrode is postioned in the flame 2) Check the electrode 3) Check the power P.C.B. 4) Check the control P.C.B. YES SAFETY SHUTDOWN OF THE BOILER ACTIVATED? NO D NO WAS THE RESET SWITCH PRESSED? YES Shutdown L.E.D. off Restart of the fan 24 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 D IS THERE STILL A PROBLEM? YES NO FUNCTIONS NORMALLY LIST OF MALFUNCTIONS POSSIBLE CAUSES 1 Delivery of hot water for domestic use: when the tap is turned on, the burner goes out. - Air in the secondary exchanger - Hot water pressure switch is defective - 3-way valve is defective 2 Delivery of hot water for domestic use: the radiatores are heated in summer mode. - 3-way valve is defective 3 Delivery of hot water for domestic use: water temperature is not satisfactory. - Check sensors for domestic and heating water Check gas settings and regulation Check water flow rate Check secondary exchanger 4 Delivery of hot water for domestic use: noisy operation. - Primary exchanger is defective Low water pressure in heating system Check gas settings and regulation Check ntc sensor for domestic hot water 5 Drop/increase in pressure in primary circuit. - Check for leaks in heating circuit Defective water supply inlet valve Secondary exchanger is defective Expansion vessel is empty 6 Repeated shutdowns. - Detection electrodes are defective - Check gas settings and regulation - Check electrical circuit for flamedetection 7 Safety thermostat is triggered repeatedly. - Faulty(contacts)N.T.C. sensors-heating/hot water - Defective (poorly calibrated) safety thermostat - Presence of air in the primary water circuit 8 When the cold water tap is turned off, the boiler comes on. - Drop in pressure in the water mains, resulting in water hammering 9 Temperature of radiators not satisfactory. - Check N.T.C. sensor for heating - Check by-pass - Check gas settings and regulation 25 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 2.2 Fault Finding Using the Total Check System Malfunction Signalling Boiler Off 1 2 3 4 5 6 Auto diagnostic state A b C d Faulty ventilation system E F G I m Faulty flame detection Air pressure switch stuck in N.O. position Faulty reset switch Faulty main circuit flow switch Spark ignition state Boiler functioning normally Lockout Boiler thermostat satisfied Room thermostat/clock no demand or selector in summer setting Faulty overheat thermostat Faulty exhaust fumes sensor Faulty heating sensor (N.T.C.) Faulty D.H.W. sensor (N.T.C.) Pump fed Main flow switch closed Air pressure switch N.O. Flame detected Water at required temperature Room thermostat/clock no demand or selector in summer setting Auto diagnostics faulty D.H.W. exchanger efficiency control Heating circuit efficiency control Heating temperature control D.H.W. temperature control 26 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 3. ELECTRIC DIAGRAMS Legend: AT BT A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Aa = = = = = = = = = = = = = = = = = = = = = = = = = = = = = High Voltage P.C.B. 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. Adjustment Central Heating Temp. Adjustment Wire Connector for Room Thermostat Connector for Total Check System Selector for Local/Remote Control Anti-cycling Device Adjustment for Heating Soft-light Adjustment Max Heating Temperature Adjustment Time Clock Connection On/Off L.E.D. On/Off Switch Interface Wire for P.C.B.s Relay Motorised Valve Ignitor Relay Gas Valve Relay Fan Relay Circulation Pump Relay Selector TCS2 Link for Continuous Pump Run Adaptor (British Gas use only) A01 = A02 = A03 = A04 = A05 = A06 = A07 = A08 = A09 = A10 = A11 = A12 = Air Pressure Switch Fan Gas Valve Ignitor Motorised Valve Circulation Pump Flame Detector Earth Terminal Flame Detection Circuit Flame Indicator L.E.D. Transformer Filter B01 = B02 = B03 = B04 = Over Heat Thermostat External Thermostat Gas Valve Modulator D.H.W. Probe Sensor Cylinder (RFFI SYSTEM models only) B05 = B06 = B07 = Heating Sensor Pressure Switch for Heating Circuit Microswitch for Diverter Valve (MFFI models only) Colours Gry Rd Bl Grn/Yll Wh Brn Blk Wh/Rd = Grey = Red = Blue = Yellow/Green = White = Brown = Black = White/Red 27 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 GENUS 23/27/30 MFFI Aa GENUS 27 RFFI SYSTEM Aa 28 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 GENUS 23/27 MFFI CN202 P GENUS 27 RFFI SYSTEM P 29 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 4. SHORT SPARE PARTS LIST GENUS 23/27 MFFI (SIT Sigma Gas Valve) 2 71 70 63 69 68 65 66 67 66 65 64 63 62 61 60 59 58 57 56 1 2 74 74 72 3 73 124 301 301 4 4 5 74 4 123 75 4 62 78 6 122 76 121 77 79 7 302 303 305 306 304 120 55 7 80 8 119 9 81 10 118 117 11 115 116 110 82 102 83 87 11 86 84 12 85 86 95 85 88 94 89 91 18 52 51 50 49 48 47 106 109 108 46 45 44 107 44 97 84 43 44 42 41 40 39 39 38 92 18 17 105 98 100 93 23 15 16 53 89 90 11 113 112 111 48 51 101 98 13 14 103 104 99 96 54 114 81 19 20 91 21 36 22 23 24 25 26 100 27 28 29 30 31 32 33 34 35 36 37 16 361 362 364 363 321 17 22 371 372 373 311 374 375 23/27 MFFI 30 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 GENUS 30 MFFI (SIT Sigma Gas Valve) 2 72 71 64 70 69 66 67 68 67 66 65 64 63 62 61 60 59 58 57 1 2 75 75 73 3 126 74 125 301 301 4 4 5 75 4 124 76 4 63 79 6 123 77 122 78 7 302 303 305 306 304 121 80 56 7 81 8 120 9 82 10 119 118 11 116 117 111 83 103 84 88 11 87 85 12 86 87 96 86 89 14 95 90 92 19 53 52 51 50 49 48 107 110 109 47 46 45 108 45 98 85 44 45 43 42 41 40 40 39 93 18 18 106 99 101 94 24 16 17 54 90 91 11 114 113 112 49 52 102 99 97 15 104 105 100 13 55 115 82 20 21 92 22 37 23 24 25 26 27 101 28 29 30 31 32 33 34 35 36 37 38 17 361 362 364 363 321 18 23 371 372 373 311 374 375 30 MFFI 31 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 GENUS 27 RFFI SYSTEM (SIT Sigma Gas Valve) 2 73 72 65 71 70 67 68 69 68 67 66 65 64 63 62 61 60 59 58 1 2 76 76 74 3 75 119 301 301 4 4 5 76 4 118 77 4 64 117 78 116 79 80 6 302 305 306 304 303 115 81 57 7 7 82 8 9 113 112 83 10 56 109 83 110 114 108 111 55 107 106 11 54 105 50 84 97 98 85 11 99 96 87 12 101 93 95 86 53 52 51 50 49 53 100 104 102 48 47 46 103 94 93 13 14 88 46 92 45 86 46 89 11 44 43 42 41 40 90 11 15 16 16 11 41 91 23 38 23 17 19 20 21 22 23 18 24 23 25 26 20 27 28 29 30 31 32 33 34 35 36 37 38 39 95 371 372 373 374 321 375 19 362 361 363 27 MFFI SYSTEM 32 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 GENUS 23/27 MFFI (SIT Sigma Gas Valve) Key no. G.C. part no. 1 11 14 17 18 19 23 24 25 28 31 43 45 46 56AB 56CD 57 60 71AB 71CD 74 83 84 86 88AB 88CD 89 91 94 95AB 95CD 98 99 100 106 110 114 116 117 118A 118B 118C 118D 119AB 119CD 301 311 321 361 362 363 364 371 372 373 374 375 381 382 379816 164 225 164 338 164 229 378 814 E03 818 E02 071 379 079 164 230 164 282 379 981 164 261 379 979 379 980 E02 026 E02 078 164 311 ARISTON Part No. Description Expansion vessel Gasket 3/4" Overheat thermostat Main flow Switch Temp probe (C.H.W.) Microswitch for 3-way/main flow group Gasket 1/2" Manual vent cock Safety valve 3 bar 1/2" Pressure gauge Time clock P.C.B. E C-MI/FFI P.C.B. EI A-MFFI P.C.B. cable Fan Fan Fan inlet gasket Venturi (exhaust manifold/header) Air pressure switch Air pressure switch Fastening spring Automatic air release valve Gasket 1" O-ring Secondary exchanger (plate-type) exchanger 23kW Secondary exchanger (plate-type) exchanger 27kW O-ring (secondary exchanger) 20-18 O-ring Gasket 3/8" Pump Pump O-ring (13) Gasket Gas valve (SIT Sigma) Spark generator Detection electrode Gasket 1/4" Ignition electrode (R.H.) Ignition electrode (L.H.) Main burner Main burner Main burner Main burner Main exchanger Main exchanger Front panel runner kit D.H.W. actuator kit SIT Sigma gas valve operator coils Heating by-pass kit D.H.W. pressure switch kit 3-way spring kit D.H.W. diaphram valve Main flow switch diaphram Main flow switch magnet Main flow switch spring Main flow switch top cap Main flow switch reed system Burner jet 1.25 full kit (Natural gas) Burner jet 0.72 full kit (LPG) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 573294 573520 997206 573224 569236 573340 573528 573727 573172 571649 997208 953045 952981 952610 572989 572990 573343 573314 571651 571652 570717 564254 569387 571449 571646 573295 573825 571807 573521 997150 997151 571965 574279 574232 574233 573441 569390 569560 569561 572271 572277 572343 572372 572749 572835 571993 571444 997029 571443 571442 571447 571446 571547 571772 571771 571770 573138 569281 569282 33 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 GENUS 30 MFFI (SIT Sigma Gas Valve) Key no. G.C. part no. 1 11 15 16 19 20 24 25 26 29 32 44 46 47 57 58 72 75 84 85 87 89 90 92 95 96 99 100 101 107 111 115 117 118 119A 119B 120 126 301 311 321 361 362 363 364 371 372 373 374 375 381 382 379816 164 225 164 338 164 229 378 814 E02 071 379 079 164 230 164 282 379 981 164 261 379 979 379 980 ARISTON Part No. Description Expansion vessel Gasket 3/4" Overheat thermostat Main flow Switch Temp probe (C.H.W.) Microswitch for 3-way/main flow group Gasket 1/2" Manual vent cock Safety valve 3 bar 1/2" Pressure gauge Time clock P.C.B. E C-MI/FFI P.C.B. EI A-MFFI P.C.B. cable Fan Fan inlet gasket Air pressure switch Fastening spring Automatic air release valve Gasket 1" O-ring Secondary exchanger (plate-type) exchanger 27kW O-ring (secondary exchanger) O-ring (20-18) Gasket 3/8" Pump O-ring (13) Gasket Gas valve (SIT Sigma) Spark generator Detection electrode Gasket 1/4" Ignition electrode (R.H.) Ignition electrode (L.H.) Main burner Main burner Main exchanger Venturi (exhaust manifold/header) Front panel runner kit D.H.W. actuator kit SIT Sigma gas valve operator coils Heating by-pass kit D.H.W. pressure switch kit 3-way spring kit D.H.W. diaphram valve Main flow switch diaphram Main flow switch magnet Main flow switch spring Main flow switch top cap Main flow switch reed system Burner jet 1.30 full kit (Natural gas) Burner jet 0.77 full kit (LPG) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 34 573294 573520 997206 573224 569236 573340 573528 573727 573172 571649 997208 953045 952981 952610 572990 573343 571652 570717 564254 569387 571449 573295 573825 571807 573521 997151 571965 574279 574232 574233 573441 569390 569560 569561 998110 998111 572835 573314 571993 571444 997029 571443 571442 571447 571446 571547 571772 571771 571770 573138 998152 998432 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 GENUS 27 RFFI SYSTEM (SIT Sigma Gas Valve) Key no. G.C. part no. 1 11 14 17 20 21 23 25 26 28 30 33 45 47 48 58 59 62 73 76 85 86 87 89 93 94 95 101 105 109 111 112 113A 113B 114 301 321 361 362 363 375 381 382 379816 164 225 164 338 164 229 378 814 E02 071 379 079 164 282 379 981 164 261 379 979 379 980 E02 078 164 311 Description Expansion vessel Gasket 3/4" Overheat thermostat Motorised valve motor Main flow switch Temp probe (C.H.W.) Gasket 1/2" Manual vent cock Safety valve 3 bar 1/2" D.H.W. probe Pressure gauge Time clock P.C.B. EB C MI/FFI P.C.B. E A-FFI/P P.C.B. cable Fan Fan inlet gasket Venturi (exhaust manifold/header) Air pressure switch Fastening spring Automatic air release valve Gasket 1" Pump Gasket 3/8" O-ring (13) Gasket Gas valve (SIT Sigma) Spark generator Detection electrode Gasket 1/4" Ignition electrode (R.H.) Ignition electrode (L.H.) Main burner Main burner Main exchanger Front panel runner kit Sit Sigma gas valve operator coils Heating by-pass kit Sanitary pressure switch kit Way and unit kit Main flow switch reed system Burner jet 1.25 full kit (Natural gas) Burner jet 0.72 full kit (LPG) ARISTON Part No. 573294 573520 997206 997147 573224 569236 573528 573727 573172 950650 571649 997208 953095 952935 952610 572990 573343 573314 571652 570717 564254 569387 997151 573521 571965 574279 574232 574233 573441 569390 569560 569561 572343 572372 572835 571993 997029 571443 571987 571447 573138 569281 569282 35 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 GENUS 23/27 MFFI (SIT Tandem Gas Valve) 2 71 70 63 69 68 65 66 67 66 65 64 63 62 61 60 59 58 57 56 1 2 74 74 72 3 73 126 301 301 4 4 5 74 4 125 75 4 62 124 76 78 6 123 77 7 302 303 305 306 304 122 79 55 7 80 8 9 81 10 120 119 11 82 97 87 85 99 86 100 96 85 88 94 91 18 104 107 46 45 44 44 43 44 104 42 41 40 105 39 39 38 92 91 18 17 51 106 93 23 15 16 84 89 90 11 52 51 50 49 48 47 102 103 95 89 53 109 101 13 14 112 115 114 113 48 108 86 84 12 118 110 98 11 117 111 83 54 116 81 121 19 20 21 36 22 23 24 25 17 26 27 28 29 30 31 32 33 34 35 36 37 99 371 321 372 373 374 322 323 375 16 22 361 362 364 311 363 23/27 MFFI 36 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 GENUS 30 MFFI (SIT Tandem Gas Valve) 2 72 71 64 70 69 66 67 68 67 66 65 64 63 62 61 60 59 58 57 1 2 75 75 73 3 128 74 127 301 4 301 4 5 75 4 126 76 4 63 79 6 125 77 124 78 7 302 123 80 303 305 306 304 56 7 81 8 122 9 82 10 121 120 11 83 98 88 86 87 86 89 100 101 97 14 95 92 18 19 105 108 47 46 45 45 44 45 105 43 42 41 106 40 40 39 93 92 19 17 85 94 24 16 52 107 90 91 11 53 52 51 50 49 48 103 104 96 90 54 110 102 13 15 116 115 114 49 109 87 85 12 113 111 99 11 118 119 112 84 55 117 82 20 21 37 22 23 24 25 26 18 27 28 29 30 31 32 33 34 35 36 37 38 100 371 321 372 373 374 322 323 375 17 23 361 362 364 311 363 30 MFFI 37 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 GENUS 27 RFFI SYSTEM (SIT Tandem Gas Valve) 2 73 72 65 71 70 67 68 69 68 67 66 65 64 63 62 61 60 59 58 1 2 76 76 74 3 75 121 301 301 4 4 5 76 4 120 77 4 64 119 78 118 79 80 6 302 305 306 304 303 117 81 57 7 7 82 8 9 115 10 11 83 112 100 85 11 101 98 97 87 12 107 102 54 50 53 52 51 50 49 53 106 93 104 48 47 46 105 96 13 14 55 109 108 103 99 86 110 113 114 84 56 111 83 116 46 95 94 88 45 86 93 89 11 46 44 43 42 41 40 92 90 11 15 11 16 16 41 91 23 38 23 17 18 19 20 21 22 23 24 23 25 26 20 27 28 29 30 31 32 33 34 35 36 37 38 39 98 371 321 372 373 374 322 323 375 19 362 361 363 27 MFFI SYSTEM 38 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 GENUS 23/27 MFFI (SIT Tandem Gas Valve) Key no. G.C. part no. 1 11 14 17 18 19 23 24 25 28 31 43 45 46 56AB 56CD 57 60 71AB 71CD 74 83 84 86 88AB 88CD 89 91 94 96AB 96CD 99 101 104 112 116 118 119 120A 120B 120C 120D 121AB 121CD 301 311 321 322 323 361 362 363 364 371 372 373 374 375 381 382 379816 164 225 164 338 164 229 378 814 E03 818 E02 071 379 079 164 230 164 282 379 976 379 981 164 261 379 979 379 980 E02 026 E02 078 378 978 378 815 164 303 164 311 ARISTON Part No. Description Expansion vessel Gasket 3/4" Overheat thermostat Main flow Switch Temp probe (C.H.W.) Microswitch for 3-way/main flow group Gasket 1/2" Manual vent cock Safety valve 3 bar 1/2" Pressure gauge Time clock P.C.B. E C-MI/FFI P.C.B. EI A-MFFI P.C.B. cable Fan Fan Fan inlet gasket Venturi (exhaust manifold/header) Air pressure switch Air pressure switch Fastening spring Automatic air release valve Gasket 1" O-ring Secondary exchanger (plate-type) exchanger 23kW Secondary exchanger (plate-type) exchanger 27kW O-ring (secondary exchanger) O-ring (20-18) Gasket 3/8" Pump Pump Gas valve (SIT Tandem) Spark generator O-ring (13) Detection electrode Gasket 1/4" Ignition electrode (R.H.) Ignition electrode (L.H.) Main burner Main burner Main burner Main burner Main exchanger Main exchanger Front panel runner kit D.H.W. actuator kit SIT Tandem gas valve operator coils SIT Tandem modureg coil Gas modulator cartridge Heating by-pass kit D.H.W. pressure switch kit 3-way spring kit D.H.W. diaphram valve Main flow switch diaphram Main flow switch magnet Main flow switch spring Main flow switch top cap Main flow switch reed system Burner jet 1.25 full kit (Natural gas) Burner jet 0.72 full kit (LPG) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 573294 573520 997206 573224 569236 573340 573528 573727 573172 571649 997208 953045 952981 952610 572989 572990 573343 573314 571651 571652 570717 564254 569387 571449 571646 573295 573825 571807 573521 997150 997151 570732 573023 571965 573441 569390 569560 569561 572271 572277 572343 572372 572749 572835 571993 571444 570712 573740 573745 571443 571442 571447 571446 571547 571772 571771 571770 573138 569281 569282 39 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 GENUS 30 MFFI (SIT Tandem Gas Valve) Key no. G.C. part no. 1 11 15 18 19 20 24 25 26 29 32 44 46 47 57 58 72 75 84 85 87 89 90 92 95 97 100 102 105 113 117 119 120 121A 121B 122 128 301 311 321 322 323 361 362 363 364 371 372 373 374 375 381 382 379816 164 225 164 338 164 229 378 814 E02 071 379 079 164 230 164 282 379 976 379 981 164 261 379 979 379 980 378 978 378 815 164 303 ARISTON Part No. Description Expansion vessel Gasket 3/4" Overheat thermostat Main flow Switch Temp probe (C.H.W.) Microswitch for 3-way/main flow group Gasket 1/2" Manual vent cock Safety valve 3 bar 1/2" Pressure gauge Time clock P.C.B. E C-MI/FFI P.C.B. EI A-MFFI P.C.B. cable Fan Fan inlet gasket Air pressure switch Fastening spring Automatic air release valve Gasket 1" O-ring Secondary exchanger (plate-type) exchanger 27kW O-ring (secondary exchanger) O-ring (20-18) Gasket 3/8" Pump Gas valve (SIT Tandem) Spark generator O-ring (13) Detection electrode Gasket 1/4" Ignition electrode (R.H.) Ignition electrode (L.H.) Main burner Main burner Main exchanger Venturi (exhaust manifold/header) Front panel runner kit D.H.W. actuator kit SIT Tandem gas valve operator coils SIT Tandem modureg coil Gas modulator cartridge Heating by-pass kit D.H.W. pressure switch kit 3-way spring kit D.H.W. diaphram valve Main flow switch diaphram Main flow switch magnet Main flow switch spring Main flow switch top cap Main flow switch reed system Burner jet 1.30 full kit (Natural gas) Burner jet 0.77 full kit (LPG) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 40 573294 573520 997206 573224 569236 573340 573528 573727 573172 571649 997208 953045 952981 952610 572990 573343 571652 570717 564254 569387 571449 573295 573825 571807 573521 997151 570732 573023 571965 573441 569390 569560 569561 998110 998111 572835 573314 571993 571444 570712 573740 573745 571443 571442 571447 571446 571547 571772 571771 571770 573138 998152 998432 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 GENUS 27 RFFI SYSTEM (SIT Tandem Gas Valve) Key no. 1 11 14 17 20 21 23 25 26 28 30 33 45 47 48 58 59 62 73 76 85 86 87 89 93 96 98 107 111 113 114 115A 115B 115 301 311 321 322 323 361 362 363 371 372 373 374 375 381 382 G.C. part no. 164 225 164 338 164 229 378 814 E02 071 379 079 164 230 164 282 379 976 379 981 164 261 379 979 379 980 E02 078 378 978 378 815 164 303 164 311 Description Expansion vessel Gasket 3/4" Overheat thermostat Motorised valve motor Main flow switch Temp probe (C.H.W.) Gasket 1/2" Manual vent cock Safety valve 3 bar 1/2" D.H.W. probe Pressure gauge Time clock P.C.B. EB C MI/FFI P.C.B. E A-FFI/P P.C.B. cable Fan Fan inlet gasket Venturi (exhaust manifold/header) Air pressure switch Fastening spring Automatic air release valve Gasket 1" Pump Gasket 3/8" O-ring (13) Spark generator Gas valve (SIT Tandem) Detection electrode Gasket 1/4" Ignition electrode (R.H.) Ignition electrode (L.H.) Main burner Main burner Main exchanger Front panel runner kit D.H.W. actuator kit SIT Tandem gas valve operator coils SIT Tandem modureg coil Gas modulator cartridge Heating by-pass kit D.H.W. pressure switch kit 3-way spring kit Main flow switch diaphram Main flow switch magnet Main flow switch spring Main flow switch top cap Main flow switch reed system Burner jet 1.25 full kit (Natural gas) Burner jet 0.72 full kit (LPG) ARISTON Part No. 573294 573520 997206 997147 573224 569236 573528 573727 573172 997274 571649 997208 953095 952935 952610 572990 573343 573314 571652 570717 564254 569387 997151 573521 571965 573023 570732 573441 569390 569560 569561 572343 572372 572835 571993 571444 570712 573740 573745 571443 571442 571447 571547 571772 571771 571770 573138 998152 998432 41 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 NOTES 42 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 43 B005 Supplied By www.heating spares.co Tel. 0161 620 6677 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 23 99 84 1267 000 - B005 Supplied By www.heating spares.co Tel. 0161 620 6677 Stampa: Bieffe Recanati