McDonnell & Miller, a Xylem brand, is proud to introduce updates to its electronic Low Water Cut-Off (LWCO) product line, including the GuardDog® RB-24SE Low Water Cut-Off and RB-122E Low Water Cut-Off for Hot WaterBoilers.
Arriving during McDonnell & Miller’s centennial, these product line enhancements signify the company’s legacy as an industry pioneer committed to reliable engineering and manufacturing and continuous innovation.
Common features
The GuardDog® RB-24SE and RB-122E share a variety of features, including an exclusive, patented McDonnell & Miller self-cleaning probe, the only low water cut-off equipped with one. Saving time and money, the self-cleaning probe minimizes scale build-up and protects users from potential boiler shutdowns or water overfill, while extending the recommended cleaning interval.
The updated LWCO line also features a leak-free metal-to-metal seal and a push-to-test button
The updated LWCO line also features a leak-free metal-to-metal seal and a push-to-test button that quickly confirms proper operation, enabling low water cut-off protection to be verified without draining any part of the system.
efficient and reliable solutions
“Upgrading the LWCO line positions Xylem to further meet growing industry demands and reflects McDonnell & Miller’s 100-year-old commitment to engineering efficient and reliable solutions that strengthen user experience and simplify operations,” said Jarek Berezowski, Product Manager, Steam Specialties, Xylem Inc.
Jarek Berezowski adds, “In addition to a more accessible experience, the enhanced GuardDog® RB series promotes easy integration due to its reduced size and backward compatibility, meaning that new offerings can easily replace current installations in the market.”
GuardDog® RB-24SE key features and benefits
- Universal wiring harness fits most of today’s hot water boilers.
- Small compact size that fits high-efficiency boilers, the optimized design ensures a reduced footprint, making it the ideal choice for space-conscious installations.
- 15,000 ohms probe sensitivity.
- Exclusive self-cleaning probe.
- Designed per UL353/1998 standard.
GuardDog® RB-122E key features and benefits
- The primary cut-off for residential hot water boiler applications.
- No blowdown is required.
- 20,000 ohms probe sensitivity.
- Designed per UL353/1998 standards.
- Exclusive self-cleaning probe.
McDonnell & Miller is marking a century of innovation, celebrating 100 years of dependability in the engineering and manufacturing of boiler controls, liquid level controls, and flow switches for steam and hot water boilers.
