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Description
Cylinder demand box for system boilers
- 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.
Technical specification
Boiler TypeSystemSupplier Part Number7574319Brand NameViessmann
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