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Next Evo X - UK Manual

MAINTENANCE Maintenance

MAINTENANCE Maintenance is an essential part of the safe and efficient operation of the appliance and ensures its durability. It should be performed according to the instructions given in current legislation. Perform combustion analysis regularly in order to check the operating efficiency of the appliance and to make sure any polluting substances relased are within the boudaries set by current legislation. Before beginning maintenance work: - Disconnect the appliance from the electricity supply by turning the external bipolar switch to the “OFF” position; - Close the gas valve and the central heating and domestic hot water system valve. After the work has been completed the initial settings will be restored. General comments It is recommended that the following inspections be carried out on the appliance at least once a year: 1. Check the seals in the water part and, if necessary, replace the gaskets and restore the seal to perfect working order. 2. Check the seals in the gas part and, if necessary, replace the gaskets and restore the seal to perfect working order. 3. Visually check the overall condition of the appliance. 4. Visually check the combustion and, if necessary, disassemble and clean the burner. 5. Following the inspection detailed in point “3”, disassemble and clean the combustion chamber, if necessary. 6. Following the inspection detailed in point “4”, disassemble and clean the burner and injector, if necessary. 7. Cleaning the primary heat exchanger 8. Make sure the following safety devices are operating correctly: - temperature limit safety device. 9. Make sure that the following gas part safety devices are operating correctly: - absence of gas or flame safety device (ionisation). 10. Checking the efficiency of domestic hot water production (flow rate and temperature). 11. Cleaning the filter in cold water inlet. WARNING! THE APPLIANCE MUST NOT BE PUT IN FUNCTION WITHOUT FILTER. 12. Perform a general inspection of the aplliance operation. 13. Remove oxide from the detection electrode using an emery cloth. Operational test After having carried out the maintenance operations, fill the appliance and the water circuit. - Begin operating the boiler. - Check the settings and make sure all the command, adjustment and monitoring parts are working correctly. - Check the seal and that the system for the expulsion of fumes/suction of comburent air is operating correctly. Draining procedures The system must be drained using the following procedure: - Close the inlet water valve; - Open the hot and cold water taps; - Empty the water from the lowest points of the system (where applicable). WARNING Before handling, empty all components which may contain hot water, performing bleeding where necessary. Descale the components in accordance with the instructions provided on the safety data leaflet supplied with the product used, make sure the room is well ventilated, wear protective clothing, avoid mixing different products, and protect the appliance and surrounding objects. Seal all openings used to take a gas pressure reading or to make any gas adjustments. Make sure that the nozzle is compatible with the supplied gas. If a smell of burning is detected or smoke is seen leaking from the appliance, or there is a smell of gas, disconnect it from the electricity supply, shut off the gas valve, open the windows and call for technical assistance. Information for the user Inform the user on how to operate the appliance. In particular, provide the user with the instruction manuals and inform him/her that these must be stored with the appliance. Moreover, make sure the user is aware of the following: - How to set the temperature and adjustment devices for using the appliance correctly and in a more costefficient way. - The system must be serviced regularly in compliance with legislation. - The settings relating to the supply of combustion air and combustion gas must not in any event be modified. 24 /

MAINTENANCE Symbols used on the data plate 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Serial number XXX XXXXXX XXX XXX XXX XXXX XXX XXXX XXX XXXX XXX XXX XXX XXX XXX XXXX XXXX XXXX XXX XXXX Key: 1. Brand 2. IGWH model 3. Commercial reference 4. Certification number 5. Gas category 6. Input rating nominal heating max 7. Power ouput heating max 8. Input rating nominal heating min 9. Power ouput heating min 10. DHW specific flow rate 11. Installation type 12. Gases which may be used 13. Max domestic hot water pressure 14. Min domestic hot water pressure 15/16/17. Electrical data 18. Institution code 19. Destination country 20. Manufacturer / 25

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