Vaillant geoTHERM VWS Installation Instructions Manual

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Vaillant geoTHERM VWS Installation Instructions Manual Manual pdf 37 page image

37Installation instructions geoTHERM VWS 0020046310_016.7 Connecting the DCF receiverFig. 6.13 Connecting the DCF receiver• Wire the DCF receiver as shown in Fig. 5.13.– left: enclosed external sensor (DCF receiver)– right: alternative solution with separate externalsensorAn alternative solution with a separate VRC 693 out-door sensor in necessary if, e.g., no radio reception isavailable at the location of the outdoor sensor.6.8 Connecting accessoriesa Caution!Risk of damage!Switch off the power before connectingadditional units to the eBUS.You can connect the following accessories:- Up to six VR 60 mixer modules to expand the systemby system circuits (factory pre-set as mixer circuits).- Up to eight VR 90 remote control units to control thefirst eight heating circuits.- vrnetDIALOG 840/2 or 860/2– Connection in each case to the eBUS terminal(Fig. 6.7, Item 11), connected in parallel.6.8.1 Installing the VR 90 remote control unitThe VR90 remote control units communicate with theheating controller via the eBus. You can connect themto any interface in the system. You need only make surethat the bus interfaces are connected to the heat pumpcontroller.The structure of the Vaillant system allows you to runthe eBus from component to component (see Fig. 6.9).Interchanging the cables does not lead to any impair-ment in communication.Fig. 6.14 Connecting remote control devicesAll eBus connector plugs are designed to allow you towire at least 2 x 0.75 mm2 per pigtail.The use of cable with a cross-section of 2 x 0.75 mm 2 istherefore recommended for eBUS cables.Setting the bus addressIn order to ensure perfect communication between allcomponents it is necessary to provide the remote cont-rol unit with an address that matches the heating circuitto be controlled.• Set the bus address on the first additional VR 90 re-mote control unit to "2".• Set different, sequential bus addresses for any furtherremote control units. Observe the VR 90 manual.2Fig. 6.15 Setting the bus addressElectrical installation 6