Cylinder Demand Terminal Box

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£115.20 inc VAT
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Cylinder Demand Terminal Box

For use when four pipe configuration is used with a third party cylinder.


  • transfers 230v AC signal from conventional cylinder thermostat controls (S or Y plan)
  • converts the 230V to a low voltage signal as required by Viessmann boilers
  • wall mounted
  • complete with fittings and instructions
  • For the new PlusBus Vitodens 200-W just snip the boiler connection plug off and hard wire into 3 & 4 on the cylinder sensor connection block.

    Cylinder Demand Terminal Box Buying into Viessmann.

    Viessmann use their best endeavours to ensure that their products are manufactured without any manufacturing or material defects.
    The standard terms and conditions guarantee that Viessmann will fix or replace any manufacturing or material defects free of charge within a period of 2 years from the date of delivery.

    Viessmann Warranty Overview

    Cylinder Demand Terminal BoxReturn of Goods.

    We very much hope you will be happy with your products, however we do understand items sometimes need to be returned.
    Condition is all important, an item should have been treated in the same way as if it was on sale in a shop, unopened and unused with seals intact.
    Large palleted items (boilers, heat pumps, cylinders etc.) must be returned as delivered, strapped and wrapped to the pallet, unopened.


    Our returns policy can be found here.

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