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vitodens 100/combi wiring-TACO 503 relay

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rickb
rickb Member Posts: 1
in Thermostats and Controls
Where do I make the outside sensor connections on the 100(lv).

Also how and where to I connect the 503 to the boiler. The only terminal block remaining is X4 for low voltage.

I have created confusion for myself I am sure.  Thanks for your help.

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  • CMadatMe
    CMadatMe Member Posts: 3,086
    edited November 2011
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    Wiring

    The 1st shipment of the new WB1B10-26 and 35s came less the 21 plug. On the LH side of the boiler if you don't see a white block that takes 6 wires its misssing. Looks like a guitar tuner. Ifnitsnthere wire sensir to terminals 3 and 4 if not there call Viessmann they will send to you. The end switch from the zone control goes to RT which has a jumper in it. Pull the jumper off and take the XX from the zone control and wire to it. Make sure priority switch in the zone control is in the off position. You can still run the boiler without ODR until you get the plug. It will take all but 2 minutes to add the plug ifnyoundon't have it.

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  • CMadatMe
    CMadatMe Member Posts: 3,086
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    So How

    Did you make out?

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