Vaillant ecoTEC plus VU Series Installation And Maintenance Instructions Manual

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Vaillant ecoTEC plus VU Series Installation And Maintenance Instructions Manual Manual pdf 23 page image

Adapting the unit to the heating installation 70020029173_04 ecoTEC plus Installation and maintenance instructions 23the cylinder charging and heating mode target values. Thisprevents the living rooms from overheating. If there is a heatdemand, the pump is switched on every 25 minutes for 5minutes once the overrun time has elapsed.7.5 Setting the maximum flow temperatureYou can set the maximum flow temperature for the heatingmode under D.71 (default setting: 75 °C).7.6 Setting the burner anti-cycling timeTo prevent frequent switching on and off of the burner andthus prevent energy losses, an electronic restart lockoutis activated for a specific period each time the burner isswitched off. You can adjust the burner anti-cycling time tothe conditions of the heating installation. The burner anti-cycling time is only active for the heating mode. Hot waterhandling mode during a burner anti-cycling time does notaffect the time function element. You can set the maximumburner anti-cycling time under D.2 (default setting: 20 min.).The effective burner anti-cycling times with respect to thetarget flow temperature and the maximum set burner anti-cycling time can be found in the following table:TFlow(target)[°C]Set maximum burner anti-cycling time [min]1 5 10 15 20 25 3030 2.0 4.0 8.5 12.5 16.5 20.5 25.035 2.0 4.0 7.5 11.0 15.0 18.5 22.040 2.0 3.5 6.5 10.0 13.0 16.5 19.545 2.0 3.0 6.0 8.5 11.5 14.0 17.050 2.0 3.0 5.0 7.5 9.5 12.0 14.055 2.0 2.5 4.5 6.0 8.0 10.0 11.560 2.0 2.0 3.5 5.0 6.0 7.5 9.065 2.0 1.5 2.5 3.5 4.5 5.5 6.570 2.0 1.5 2.0 2.5 2.5 3.0 3.575 2.0 1.0 1.0 1.0 1.0 1.0 1.0TFlow(target)[°C]Set maximum burner anti-cycling time [min]35 40 45 50 55 6030 29.0 33.0 37.0 41.0 45.0 49.535 25.5 29.5 33.0 36.5 40.5 44.040 22.5 26.0 29.0 32.0 35.5 38.545 19.5 22.5 25.0 27.5 30.5 33.050 16.5 18.5 21.0 23.5 25.5 28.055 13.5 15.0 17.0 19.0 20.5 22.560 10.5 11.5 13.0 14.5 15.5 17.065 7.0 8.0 9.0 10.0 11.0 11.570 4.0 4.5 5.0 5.5 6.0 6.575 1.0 1.0 1.0 1.0 1.0 1.0NoteThe remaining burner anti-cycling time following aregular shutdown in heating mode can be calledup under D.67.7.7 Setting the maintenance intervalIf you set the maintenance interval, the maintenance mes-sage SEr appears in the display after a configurable numberof burner operating hours. The display on the eBUS control-ler shows the information Maintenance.▶ Use D.84 to set the operating hours until the next main-tenance work is due. Guideline values can be found inthe following table.Heat de-mandNumberof per-sonsBurner operating hours until thenext inspection/maintenance workis due (dependent upon the sys-tem type)5.0 kW 1 ‑ 2 1050 h2 ‑ 3 1150 h10.0 kW 1 ‑ 2 1500 h2 ‑ 3 1600 h15.0 kW 2 ‑ 3 1800 h3 ‑ 4 1900 h20.0 kW 3 ‑ 4 2600 h4 ‑ 5 2700 h25.0 kW 3 ‑ 4 2800 h4 ‑ 6 2900 h> 27.0 kW 3 ‑ 4 3000 h4 ‑ 6 3000 hThe values stated correspond to an average operating timeof one year.If you do not set a numerical value but do set the symbol "–",the Maintenance display function is not active.NoteOn completion of the set operating hours, youmust set the maintenance interval again.7.8 Adjusting the product to large flue gas pipelengthsAt flue gas pipe lengths greater than 10 m (system 80/125),you can increase the product's fan speed.▶ Increase the value by 20 under D.51.◁ The maximum speed of the fan is increased by200 rpm.7.9 Handing the product over to the operator1. When you have finished the installation, attach thesticker supplied (835593) to the front of the product inthe operator's language.2. Explain to the operator how the safety devices work andwhere they are located.3. Inform the operator how to handle the product. Answerany questions the operator may have. In particular,draw attention to the safety information which the op-erator must follow.4. Inform the operator of the necessity to have the productmaintained according to the specified intervals.5. Pass all of the instructions and documentation for theproduct to the operator for safe-keeping.