Vaillant ecoTEC sustain 24 Installation And Maintenance Instructions Manual

Also see for ecoTEC sustain 24: Operating instructions Installation and maintenance instructions

0020253094_05 ecoTEC sustain Installation and maintenance instructions 3512 Inspection and maintenance12.1 Complete Service Interval Record section▶ After servicing, complete the relevant Service IntervalRecord section of the Benchmark Checklist located onthe inside back pages of this document.12.2 Using original sealsIf you replace components, use only the enclosed originalseals; additional sealing materials are not required.12.3 Inspection and maintenance▶ You must carry out an annual inspection of the product.The annual inspection can be effectively performedwithout removing components by requesting data fromthe DIA system, carrying out the simple visual checks in-dicated in the table in the appendix and performing a fluegas measurement. The maintenance intervals and theirscope are determined by the heating engineer based onthe condition of the boiler found during the inspection. Allinspection and maintenance work should be performed inthe order specified in the table in the appendix.During any inspection and maintenance or after changeof parts of the combustion circuit, the following must bechecked:– The boiler has been installed in accordance with the rel-evant installation instructions.– The integrity of the flue gas installation and flue seals isin accordance with the relevant flue installation instruc-tions enclosed.– Visual, the integrity of the boiler combustion circuit andrelevant seals (paying particular attention to the burnerdoor seal).– The gas inlet working pressure at maximum rate.– The gas flow rates.– Correctness of electrical, water and gas connections.– Correctness of the water pressure.– The condition of the whole system, in particular the con-dition of radiator valves, evidence of leakage from theheating system and dripping taps.▶ Correct any faults before proceeding.12.4 Preparing the maintenance work1. Switch off the product.2. Disconnect the product from the power grid.3. Remove the front casing. (→ Page 18)4. Close the gas stopcock.5. Close the service valves in the heating flow and in theheating return.6. Close the service valve in the cold water pipe.7. Drain the product to clean hydraulic components(→ Page 39).8. Ensure that water does not drip on live components(e.g. the electronics box).9. Use only new seals and o'ring. Do not use additionalcompounds.12.5 Checking the CO₂ content1. Start up the product with the check programme (P.01)and set the value.– Setting value for the programme P.01: 100Check programmes – Overview (→ Page 45)2. Wait until the value that is read is stable.– Waiting period for reading a stable value: 5 min13. Unscrew the cover from the flue gas analysis point (1).4. Measure the CO₂ content at the flue gas analysis point.5. Compare the measured value with the correspondingvalue in the table.Checking the CO₂contentRemovedfront casingFitted frontcasingNatural gas H Natural gas HCO₂ at full load 9.0 ±1.0 vol. % 9.2 ±1.0 vol. %CO at full load ≤ 250 ppm ≤ 250 ppmCO/CO₂ ≤ 0.0031 ≤ 0.0031Checking the CO₂contentRemovedfront casingFitted frontcasingLiquefied pet-roleum gas PLiquefied pet-roleum gas PCO₂ at full load 10.1 ±0.5 vol.%10.3 ±0.5 vol.%CO at full load ≤ 250 ppm ≤ 250 ppmCO/CO₂ ≤ 0.0026 ≤ 0.0026◁ The value is OK.▽ The value is not OK; you cannot start up theproduct.▶ Set the CO₂ content. (→ Page 36)