Vaillant ecoTEC sustain 24 Installation And Maintenance Instructions Manual

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

32 Installation and maintenance instructions ecoTEC sustain 0020253094_05NoteThe actual reading on the digital pressuregauge should ideally be 0,05 MPa (0,5 bar)plus an additional pressure correspondingto the highest point of the system above thebase of the boiler – 10 m head equals an ad-ditional 1 bar reading on the pressure gauge.The minimum pressure should not be lessthan 0,1 MPa (1 bar) in any installation. Ifthe system is to be treated with an inhibitor itshould be applied at this stage in accordancewith the manufacturer’s instructions8. Install the front casing.9.11 Checking leak-tightness▶ Check the gas pipe, the heating circuit and the hot watercircuit for leak-tightness.▶ Check that the flue system has been installed correctly.9.11.1 Checking the heating mode1. Activate the heating mode on the user interface.2. Turn all thermostatic valves on the radiators until theyare fully open.3. Allow the product to operate for at least 15 minutes.4. Fill and purge the heating installation. (→ Page 29)5. Call up the status codes. (→ Page 26)Status codes – Overview (→ Page 49)◁ If the product is working correctly, the display showsS.04.9.11.2 Checking the hot water generation1. Activate the hot water handling mode on the userinterface.2. Open a hot water valve completely.3. Call up the status codes. (→ Page 26)Status codes – Overview (→ Page 49)◁ If the product is working correctly, the display showsS.14.10 Adapting the unit to the heatinginstallation10.1 Activating diagnostics codesYou can find the setting options in the diagnostics codes inthe installer level.▶ Set a diagnostics code. (→ Page 26)10.2 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. The burner anti-cycling time is only active forthe heating mode. Switching on domestic hot water modeduring the burner anti-cycling time has no effect.10.2.1 Setting the maximum burner anti-cyclingtime1. Set a diagnostics code. (→ Page 26)TFlow(tar-get)[°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 1.02. If required, adjust the maximum burner anti-cycling timeusing diagnostics code d.02.10.2.2 Resetting the remaining burner anti-cyclingtime▶ Press and hold the button for more than threeseconds.◁ All symbols are shown in the display.