Control heat (energy) input to your boiler heating elements in seamless steps from 0 to 9 kW for optimum boiling rates.
Control box with:
- 2 x 4.5kW heating element industrial quality switching gear - each with pilot light
- 2 x 25 Ampere fuses
- 1 x Heat controller for 4.5kW heating element + display
- Large heat sink, cooling fan and air intake at bottom-rear (for cooling heat controller)