this unit is strictly for closed-loop hydronic applications

Common Questions How do I confirm the rotation of my blower wheel

As an LCH Series limit control

Technicians should verify the 62-102860-01 board compatibility by checking the current model number

Technicians should test for continuity and check the resistance against the manufacturer

Hydrolevel 550R Low Water Cut-Off 323055-751 this unit is strictly forThe 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