Vaillant VRC 470 Installation Instructions Manual

Also see for VRC 470: Operating instructions Instruction manual Installation insrtuctions Instruction manual

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Vaillant VRC 470 Installation Instructions Manual Manual pdf 14 page image

Electrical installation14 Installation instructions VRC 470 0020116690_0055 Electrical installatione Danger!Risk of death from live connections!When working in the control cabinet of theboiler there is a risk of death from electricshock. Continuous voltage is present on themains connection terminals, even if the mainswitch is turned off!> Switch the main switch off before workingon the control cabinet of the boiler.> Disconnect the boiler from the powermains by disconnecting the mains plug orby de-energising the boiler via an isolatingdevice with a contact opening of at least3 mm (e. g. fuses or power switches).> Secure the power supply against beingswitched on again.> Open the control cabinet only when theappliance is disconnected from the powersource.5.1 Connecting external sensor VRC 693> Disconnect the power supply to the boiler.> Secure the power supply to the boiler against beingswitched on again.12Fig. 5.1 Connecting external sensor VRC 6931 Connection cable to the external sensor VRC 6932 6-way edge connector for plug location X41 (boiler)Connect external sensor VRC 693 to the boiler asfollows:> Connect the connection cable to the terminals of theexternal sensor (1).> Connect the connection cable to the 6-way edge con-nector (2).> Guide the connection cable with the edge connectorinto the control cabinet of the boiler.> Connect the 6-way edge connector (2) to slot X41 ofthe PCB of the control cabinet.5.2 Connecting external sensor VRC 9535> Disconnect the power supply to the boiler.> Secure the power supply to the boiler against beingswitched on again.12Fig. 5.2 Connecting external sensor VRC 95351 Terminal rail VRC 9535 external connector2 6-way edge connector for plug location X41 (boiler)Connect external sensor VRC 9535 to the boiler asfollows:> Connect the connection cable to the terminal strip ofthe external sensor (1).> Connect the connection cable to the 6-way edge con-nector (2).> Guide the connection cable with the edge connectorinto the control cabinet of the boiler.> Connect the 6-way edge connector (2) to slot X41 ofthe PCB of the control cabinet.