Options dongle

An options dongle allows access to premium functions, such as control of the floor heating pump, booster fan and heat exchanger, from the control panel. It also allows a DuoControl LPG changeover device to be connected and can be used for controlling a tank for additional hot water. 

The options dongle is fitted in the service hatch of the boiler (3020 HE / 3030) with the fasteners supplied.