Vaillant ecoTEC SERIES Instructions For Installation And Servicing

Also see for ecoTEC plus 612: Instructions for use Installation and maintenance instructions Instructions for use Installation and maintenance manual Instructions for installation and servicing

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Vaillant ecoTEC SERIES Instructions For Installation And Servicing Manual pdf 48 page image

48 Instructions for installation and servicing ecoTEC 839592_12• Clean the siphon part section by rinsing it out withwater.• Fill the lower part with water until about 10 mm belowthe upper edge.• Fasten the lower part again on the condensate siphon.7.4 Checking the expansion vessel1Fig. 7.11 Checking expansion vessel admission pressureNoteIt is not necessary to perform this check everyyear – a check every three years is sufficient.• Ensure the boiler CH service valves are closed.• Release the pressure from the boiler.• Remove valve cap from expansion vessel charge point.• Check that the internal charge pressure of theexpansion vessel is between 0.75 and 0.9 bar.If the pressure is lower than this the vessel should berepressurised using an air pump.• Refit the valve cap.• Repressurise boiler and heating system.7.5 Recommissioning the boiler• Carry out electrical safety checks.• Turn on the electrical supply.• Open the boiler CH service valves.• Carry out function checks of boiler operation aspreviously detailed.• Check gas flow rate as previously detailed.• Check for water leaks.• Refit case, ensuring that a good seal is obtained.7.6 Test operationAlways perform the following checks after completingany maintenance task:• Commission the appliance according to the relevantoperating manual.• Check the appliance for gas and water leaks.• Check the air/flue gas installation for leaks, check itsfastening.• Check for ignition and an even flame on the burner.• Check that the heating system and the water heatingis working (combination boilers only).• Fill out the Benchmark gas boiler commissioningchecklist at the rear of this guide.Fig. 7.12 Function check7 Inspection and maintenance