McDonnell & Miller 153605 RBT-3000 Low Water Cut-Off

Original price was: $387.96.Current price is: $299.67.

5 in stock

SKU: 1150892 Category:


The McDonnell & Miller 153605 RBT-3000 is a combination Low-Water Safety Cut-Off and Fuel-Saving controller for residential heating systems. It’s designed to:

  • Prevent boiler damage and potential explosions by automatically shutting down the burner if the water level falls below a safe point.
  • Reduce fuel consumption by up to 10-20% through optimized burner cycling and boiler operation.

Here’s a breakdown of its key features:

  • Low-Water Cut-Off (LWCO): Utilizes a remote electronic probe to monitor water level and trigger burner shutdown if it gets too low.
  • Fuel-Saving Mode: Actively manages burner cycling to match boiler output to the required load, minimizing unnecessary fuel usage.
  • Programmable settings: Allows customization of temperature parameters, boiler cycling, and other operating characteristics.
  • Digital display: Provides clear and easy-to-read information about boiler operation, fuel savings, and any system faults.
  • Durable construction: Built with high-quality materials for long-lasting performance and reliability.

The RBT-3000 is suitable for hot water boilers up to 400,000 BTU input and is compatible with most boiler control systems. It’s a great option for homeowners who want to improve the safety and efficiency of their heating system.

Here are some additional benefits of the RBT-3000:

  • Reduces wear and tear on boiler components: By minimizing unnecessary burner cycling, the RBT-3000 can help extend the life of your boiler.
  • Improves comfort: Consistent boiler operation provides more even heat distribution and eliminates temperature fluctuations.
  • Pays for itself over time: The fuel savings achieved by the RBT-3000 can offset its initial cost relatively quickly.

If you’re looking for a reliable and effective way to improve the safety and efficiency of your heating system, the McDonnell & Miller 153605 RBT-3000 is definitely worth considering.


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