Item No: 500

Hydrolevel low water cut-offs are electrically operated. A probe is installed in the boiler shell or external manifold and is connected to the control unit. Water is used as a conductor to complete the circuit between the probe and the boiler shell. When water is in contact with the probe, the circuit is completed; when the water level drops below the probe, the circuit opens. Hydrolevel controls provide contacts to de-energize the burner circuit in a low water condition. Features Reliable Electronic Operation Easy to Install Low Maintenance; No Blowdowns No Moving Parts to Wear or Stick Time Delay Prevents Burner Short Cycling Inexpensive to Own and Operate Manual Reset Burner Circuit Test Button LED Indicating Lights Meets ASME CSD-1 Requirements for Commercial Water Boilers Specifications Power Consumption: 2 VA Switching Capacity: 50 VA Switch Contacts: SPDT Max. Pressure: 160 PSI