Vaillant geoTHERM VWS Installation Instructions Manual

Also see for geoTHERM VWS: Installation instructions Operating manual Operating manual

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Vaillant geoTHERM VWS Installation Instructions Manual Manual pdf 48 page image

Installation instructions geoTHERM VWS 0020046310_01488.4.3 Charging principle buffer cylinderThe buffer cylinder is controlled depending on the set-point flow temperature. The heat pump heats when thetemperature of the buffer cylinder head temperaturesensor VF1 is smaller than the set target temperature. Itheats until the temperature measured by the sensor atthe bottom of the buffer cylinder, RF1, has reached thesetpoint temperature plus 2 K.In the connection to a hot water cylinder charging thebuffer cylinder is also charged when the temperature ofthe head temperature sensor VF1 is less than 2 K higherthan the set target temperature (premature reheating):VF1 < T VL set + 2 K.8.4.4 Resetting to factory settingsa Caution!Inadvertent deletion of specific settings!When you reset the control system tothe default settings, specific systemsettings can be deleted and the systemcan shut down. The system does notsuffer damage.• Press both dials simultaneously for at least 5 secondsin the top-level display of the graphics display.After that you can select whether to reset only thetimer programme or all values to the default settings.8.4.5 Controller structureThe top level display is a graphics display. It is thestarting point for all the available displays. This displayreappears automatically if you do not actuate any of thedials for a long time when setting values.In the following illustrations you can see all the control-ler screens in an overview in the form of a flow chart.You will find descriptions of the individual screens in thesections that follow them.Controller operation is subdivided into three levels:The Operator level is intended for the operator.The Code level (Menus C1 - C9, D1 - D5, I1 - I5 and A1 -A9) is reserved for the specialist and is protectedagainst unintentional adjustments by means of a codeinput.The following parameters can be displayed in the indivi-dual menus, but the values cannot be changed if nopassword is entered, i. e. access to the code level is dis-abled.In Menus C1 to C9 you can set parameters for the vari-ous functions of the heat pump for the heating circuit.In Menus D1 to D5 you can operate and test the heatpump in diagnostic mode.In Menus I1 to I5 you can obtain general information re-garding the settings for the heat pump.In Menus A1 to A9 you are guided through the installati-on menu during the initial commissioning of the heatpump.Furthermore it is possible to display and select specialfunctions, such as the energy saving function. To dothis, press the dial once , twice, or three times, startingfrom the top-level display (see Fig. 8.1).The third level contains functions for optimising the sys-tem and can only be set by a specialist using vrDIA-LOG 810/2 (see Chap. 8.10).8 Control system