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the ZRU operates purely on the pipe thermostat — running whenever the boiler is on and stopping when the boiler shuts down
The protection continuously monitors line-to-neutral voltage and disconnects the vehicle if it detects a fault (above 253V or below 207V rms for more than 5 seconds)
before any branch points or storage tanks
Compliant with UK building and water regulations
the Baxi 40 L Buffer Vessel is required instead
Baxi Plug in Single Channel 7 Day RF Digital Programmable Room Thermostat Offset the ZRU operates purely onUpgrade your central heating control with the Baxi Plug in Single Channel 7 Day RF Digital Programmable Room Thermostat. This wireless thermostat delivers precise temperature management and customisable daily schedules, helping homeowners and trade professionals achieve optimal comfort while minimising energy costs. Easy plug in installation and reliable RF communication make it a smart choice for modern UK homes. Key Features 7 Day Programmability:
