Description
Product Overview
The Xylem-McDonnell & Miller 7-B (Part Number 110800) is a potentiometer proportional auto reset low water cut off switch engineered to protect boilers and hydronic heating systems from the damaging effects of low water conditions. Designed for demanding commercial and residential applications, this control automatically resets once safe water levels are restored, minimizing downtime and reducing the need for manual intervention.
Key Features
- Potentiometer proportional control for precise, responsive low water detection
- Automatic reset functionality — restores normal operation once water level is re-established
- Low water cut off protection guards boilers against dry-firing and heat exchanger damage
- Durable construction built to meet the demands of commercial and residential hydronic systems
- Part of the trusted McDonnell & Miller product line by Xylem, a recognized leader in boiler controls
Application
The 7-B is ideal for use on steam and hot water boilers where continuous, reliable low water protection is required. The proportional potentiometer design allows the control to modulate output in proportion to water level changes, providing more precise and stable boiler operation compared to simple on/off switching.
Why Choose the McDonnell & Miller 7-B?
- Trusted McDonnell & Miller engineering with decades of proven boiler control performance
- Auto reset design reduces service calls and manual resets
- Proportional control improves system stability and efficiency
- A reliable solution for protecting your boiler investment
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