The VR 34 is a 0 to 10 Volt coupler for ecoTEC plus and ecoCRAFT boilers that transfers a voltage input from the BEMS equipment into a temperature set point for the boiler. The VR 34 also has a 24 Volt fault signal output and in the event of a boiler failure, this will remain active until the fault is cleared and the boiler reset. The VR 34 also has an LED to indicate operation.
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that Vaillant is consulted before specifying.
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