Keston Control Knobs
The control knob sits on one of the spindles located on the front of the appliance and allows you to manually control certain aspects of the boilers operation. Some boilers allow you to change temperature and some even allow you to change the current function. This means the user can have the boiler generate hot water without the central heating being on and vice versa.
KESTON C08400060 FASCIA KNOB
Part No: 1632115 / MPN: C08400060
KESTON C17400090 POTENTIOMETER KNOB
Part No: 1633025 / MPN: C17400090