Ariston 47-116-15 installation instructions Yes

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D

IS		1	FAULTS
THERE STILL	YES	1	Drawing D.H.W:
A PROBLEM?	YES		When you turn on a tap
A PROBLEM?			When you turn on a tap
			burner switches off
NO		2	Drawing D.H.W:
NO			radiators heat up in summer mode
			radiators heat up in summer mode

3 Drawing D.H.W:

POSSIBILE CAUSES

- air in secondary heat exchanger

- faulty main circuit flow switch

- faulty D.H.W. flow switch

- faulty 3-way valve

- check C.H./D.H.W. temperature probes

NORMAL

insufficient hot water temperature

- check gas pressures

- check water flow rate

OPERATION

4 Drawing D.H.W: noisy operation

5 Decrease/increase heating circuit pressure

- check secondary heat exchanger

- primary heat exchanger faulty or

lime-scale deposits

- low heating system water pressure

- check gas pressures

- check C.H./D.H.W. temperature probes

- check for leaks on the heating circuit

- faulty filling-loop

- faulty secondary heat exchanger

- expansion vessel faulty

6Repeated shutdowns

7Repeated intervention of safety thermostat

8When cold water tap turned off, the boiler ignites

9Insufficient radiator temperature

-faulty detection electrodes

-check gas settings

-check flame detection electric circuit

-C.H./D.H.W. temperature probes open circuit

-overheat thermostat not calibrated correctly

-air in primary water circuit

-drop in pressure in the water mains, with consequent water hammer

-check C.H. temperature probe

-check by-pass

-check gas pressures

FC004Ae

22

B063

Image 46

Contents Installation Instructions Type C Boilers Table of Contents General Information Overall View Installation Overall Dimensions Supply must be fused at 3 a Domestic Water Tonbridge Morley RoadKent TN9 1RA 80 mm Restrictor No Restrictor Restrictor Extension Piping not insulated Piping insulatedSystems Extension Piping not insulated Piping insulatedCalculating the lengths of the pipes, Electrical Diagram Central Heating Return Commissioning Control Panel Initial START-UP Operational Adjustments Status ANTI-FROST Device G20 Gas G30 GAS AdjustmentsMethane Liquid Gas Butane 16.0Maintenance Miscellaneous BoilerProgrammer Technical Information Technical Service Hot Line 01494Manufacturer Merloni TermoSanitari SpA Italy Servicing Instructions Type C Boilers Fault Finding Servicing Instructions Removing the front panelRemoving the sealed chamber frontal cover Removing the side panelsRemoving the burner and jets Removing the combustion coverRemoving the electrodes Removing the main heat exchanger Removing the air pressure switch Removing the fanSetting the maximum heating circuit power Setting the gas pressuresSetting the minimum and the maximum power of the boiler Setting pressure for soft ignitionRegulating the heating power for Butane gas G30 Regulating the heating power for Natural gas G20Regulating the heating power for Propane gas G31 Removing the spark generator Removing the gas valve Removing the D.H.W. secondary exchangerRemoving the main circuit flow switch Removing the safety valveRemoving the automatic air vent Removing the pump Removing the pressure gauge Removing the expansion vesselRemoving the D.H.W. flow switch Removing the D.H.W. temperature sensor N.T.CRemoving the heating temperature sensor N.T.C Removing the overheat thermostatChecking the fuses Removing the time clockRemoving the P.C.B Fault Finding Finding diagrams described in this chapterYES YES ∆ P 1.2 mbar YES Electrical Diagrams MicroGENUS 23/27 Mffi MicroGENUS 23/27 Mffi Ariston Page Manufacturer Merloni TermoSanitari SpA Italy Microgenus 27 Mffi Cod Part Code Description 998924 Panel combustion chamber front 571770 Main flow switch top cap