![Viessmann Cylinder demand box for third party DHW cylinder (System boiler) - 7574319](http://beetbg.com/cdn/shop/files/7574319-800_600x600_5f5d5448-e490-44f4-8342-4d2a7ac5db6e_600x600.png?v=1717595534)
Viessmann Cylinder demand box for third party DHW cylinder (System boiler) - 7574319
by VIESSMANN
SKU 7574319
Please call to check availability before ordering Live Chat / 01985 850982
Cylinder Demand Terminal Box
For use when four pipe configuration is used with a third party cylinder.
This transfers 230v AC signal from conventional cylinder thermostat controls (S or Y plan) and converts the 230V to a low voltage signal as required by the Vitodens range of system domestic boilers
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.