Operating Manual VRC 430 0020042468_024Appliance featuresApplicationThe VRC 430 is a weather compensator controller forheating and generating hot water."Weather compensator" means: at low external tem-peratures the VRC 430 provides more heating output,and at higher external temperatures lower heatingoutput. The outside temperature is measured by aseparate outdoor sensor, and the results are transmit-ted to the VRC 430.The room temperature is based only on your presetvalues. The system compensates for the effect of theexternal temperature.You can use the VRC 430 to set different room targettemperatures - for different times of the day and for dif-ferent days of the week.In automatic mode, the VRC 430 controls your heatingaccording to these settings (see Fig. 0.1).With the VRT 430 you can also control times for heatingand hot water generation.04:00 16:0008:00 12:00 20:0015 °20 °25 °Room temperatureTimeSet back temperaturePeriod 1 Period 3Period 2Fig. 0.1 Automatic heating operation: Example, setting the tar-get room temperature for different times of dayThe VRC 430 can also be used to control the followingaccessory components:– Circulation pump for hot water generation in conjunc-tion with a multi-functional module 2 of 7– Conventional domestic hot water cylinder– Vaillant layer hot water storage tank actoSTOR– Second heating circuit using the Vaillant MixerModule VR 61– Solar unit using the Vaillant Solar Module VR 68The VRC 430 can be operated with the Vaillant remotecontrol VR 81.The VRC 430 can form part of a new heating and hotwater generation unit or can also be retro-fitted into anexisting installation. The heating unit must have aneBUS interface.eBUS is a communications standard for data exchangebetween heating technology components.Product features– eBUS interface– Data connection with a Vaillant heating unit via aneBUS line– Illuminated graphical display (display field)– Operation via both dials according to the Vaillant"turn and click" principle– Direct fitting of the controller in the operating panelof the heating unit or separate wall mounting– Equipped for operation with Vaillant diagnostics soft-ware vrDIALOG 810/2 and with the Vaillant InternetCommunication System vrnetDIALOG, i.e. Remote di-agnosis and settingsAppliance features