Chaffoteaux & Maury MINIMA MX2 24 FF NG Maintenance & Serice Manual Download | Manualshive

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Supplied By www.heating spares.co Tel. 0161 620 6677

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Summary of Contents for MINIMA MX2 24 FF NG

Page 1: ...orking pressure 0 1 bar Maximum DHW working pressure 10 bar Gas category II 2H 3 Nominal gas flow rate at 15 C and 1013 mbar MX2 24 MX2 30 Maximum Minimum Maximum Minimum power 24 kW power 10 kW power 30 kW power 10 kW Natural gas G 20 at 20 mbar 2 76 m3 h 1 27 m3 h 3 41 m3 h 1 27 m3 h Butane gas G 30 at 28 mbar 2 06 kg h 0 94 kg h 2 50 kg h 0 94 kg h Propane gas G 31 at 37 mbar 2 02 kg h 0 93 kg ...

Page 2: ...rode 28 Ignition electrode 29 Main heat exchanger 30 Water water heat exchanger 31 DHW flow sensor 32 Combustion chamber made of aluminium coated steel with 4 ceramic fibre panels to insure heat insulation 33 Right hydraulic assy 34 Left hydraulic assy 35 Single speed pump 36 Automatic air separator and automatic vent 37 Automatic by pass 38 Flue hood with fan 39 Air Pressure switch 40 Flue sampli...

Page 3: ...pressure gauge 18 3 Open the gas tap 3 4 The boiler is now ready to use 5 Push on the knob 15 The knob 15 power on will light Hot Water 1 Turn the DHW thermostat clockwise 16 2 Turn on a hot water tap the orange burner on indicator will light 21 and the water will become hot Control panel MX2 FUNCTIONAL DIAGRAM 39 8 29 32 24 36 35 14 11 38 34 12 22 33 10 25 28 26 30 15 20 17 16 18 19 21 Fig 3 Fig ...

Page 4: ...f the gas The red lockout indicator bulb 20 Fig 4 will show The domestic hot water temperature is controlled by the flow and return control thermistor 9 10 Fig 5 This system anticipates the changes of temperature in the secondary heat exchanger and ensures accurate temperature regulation When the tap is closed the burner is extinguished and the pump stops Priority will be given to a demand for hot...

Page 5: ... in the flue turret SUGGESTED SEQUENCE for SERVICING Before disconnecting or removing any parts isolate the gas and electricity supplies Ensure that the appliance is cool for detail please see section on Parts Removal and Replacement Preliminary Checks Remove outer case Check the system pressure is at least 0 8 bar cold Check operation of solenoids Check that the burner is extinguished fully when ...

Page 6: ...Remove the clip securing the water brass inlet connection Remove the brass connection and the DHW flow switch plunger Reassemble in the reverse order take care to the wise 10 Pressure Switch Carry out step 1 Disconnect the wire from the pressure switch Disconnect the two pressure pipes Remove the T20 upper screws securing the pressure switch from the chassis 11 DHW Reed Relay Carry out step 1 Disc...

Page 7: ...rol board and earth plug from earth socket Unscrew the pump nut F of the flow pipe from the volute Remove the clip H on the pump volute and pull the pump toward you Reassemble in reverse order 17 Pressure relief valve Drain the boiler first remove the clip securing the valve and pull it toward you Remove in reverse order take care to the valve positionning 18 NTC and Overheat thermostat Remove the...

Page 8: ...Supplied By www heating spares co Tel 0161 620 6677 8 FAULT FINDING CHART ...

Page 9: ...Supplied By www heating spares co Tel 0161 620 6677 9 ...

Page 10: ...Supplied By www heating spares co Tel 0161 620 6677 10 ...

Page 11: ...Supplied By www heating spares co Tel 0161 620 6677 11 ...

Page 12: ...m m Primary water circulation defect m m l m l l Central heating inlet thermistor faulty open circuit m m l l m m Central heating inlet thermistor faulty short circuit m m l l m l Central heating oulet thermistor faulty open circuit m m l l l m Central heating oulet thermistor faulty short circuit m l m m l m Firing problem m l m l m m Wiring problem or fuse 1 25 A m l m l m l Fan on but does not ...

Page 13: ...06 VALVE KIT 61311597 537 PRESSURE RELIEF VALVE 61312668 538 PUMP AIR SEPARATOR 15 50 61312183 PUMP AIR SEPARATOR 15 60 61313464 541 THERMISTOR TEMP SENSOR 61000733 543 STOPPED WATER THROTTLE 61311745 589 WATER WATER HEAT EXCHANGER 61302409 615 PRINTED CIRCUIT BOARD PRINC 65100774 616 PRINTED CIRCUIT BOARD AFF 65100773 622 IGNITION PUSH ROD 61312414 649 PRESSURE GAUGE 61313561 650 WHITE KNOB 61312...

Page 14: ...without prior notice and accepts no liability for any errors or omission in the information contained in this document Manufacturer Chaffoteaux Maury France Commercial subsidiary M T S GB Limited MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone 01494 755600 Fax 01494 459775 internet www chaffoteaux co uk E mail info mtsgb ltd uk Technical Support Help Line 01952 222288 ...

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