Completely in 304 stainless steel

Flow switch on the input to control the ignition of the resistors, mounted vertically to allow the spring to be removed in the event of a spring failure.

Safety valve

Adjustable 0-90°C thermostat

Fixed 70°C thermostat with automatic reset for double safety on the water inlet in the first resistor (if the flow switch breaks and the resistors heat up in the absence of water, it intervenes immediately)

QE with low voltage 24V user controls

Main power switch

ON-OFF buttons to start and stop heating mode

Half power selector 50%-100% for the 6-resistor models (all except the 24kW)

5-second delay between the water passage and the ignition of the resistors (to prevent micro-leaks or incorrect use of the lance from compromising the contactors with too many time switchings)

Insulated resistors