Hydrolevel 550R Low Water Cut-Off 324846-701 provided the media temperature remains

provided the media temperature remains within the valve's technical specifications

and C2500 series heaters

this heavy-duty relay provides the necessary 24VAC coil voltage reliability required for Source 1 and Johnson Controls equipment

Durable Construction: Built for commercial environments

providing precise control without the need for high minimum operating pressure differentials

Hydrolevel 550R Low Water Cut-Off 324846-701 provided the media temperature remainsThe Hydrolevel 550R Low Water Cut Off is a heavy duty 120Vac electronic LWCO engineered specifically for technical compliance in commercial hot water boiler applications. Operating as a probe type safety control, the 550R (Part Number 45 552) provides immediate burner shutdown during critical low water conditions to prevent dry firing and catastrophic heat exchanger failure. This model features a manual reset logic that triggers after a sustained 30