Introducing FlexFit, a Money-Saving Innovation for Boiler Retrofits

Share Article

Preferred Utilities Manufacturing's new linkageless control technology makes boiler rooms more efficient and easier to operate

This is a control solution that delivers benefits for all members of an operation team.

Boiler operations professionals are often plagued with high costs, inefficient heating, unreliable operation, and myriad other headaches. In an effort to make boiler operation less expensive and more dependable, many of them are making the move to "linkageless" control systems. These systems utilize individual servos on burners to control fuel and air ratios, and this in turn provides more savings to the end user. Some of the biggest benefits of linkageless systems include:

1)    Higher efficiency: O2 levels may fluctuate but will always return to position of highest fuel and electrical efficiency. In addition, turndown is often improved resulting in less cycling of the burner.

2)    Monitoring and communication: The system communicates via Modbus and reports on all functions. The main module monitors the positions of all fuel- and air-control devices. Any positioning error shuts the burner down safely.

3)    Automatic adjustments for ambient air and fuel changes: Linkage systems can cause major problems for technicians. Once all the linkage is set, the ambient air density may change, throwing the system off. In addition, instead of system readjustment every time there is a fuel switch, the positions of all servos are programmed and independent. This means that the system adjusts automatically to fuel/air ratio changes as well as fuel changes.

The new FlexFit system, being introduced to the market by Preferred Utilities Manufacturing Corporation, is an innovation in linkageless technology. The FlexFit solution offers a less costly, less time-consuming retrofit to modern linkageless controls in the boiler room. Leveraging the industry-leading BMU (Burner Mate Universal) platform, the FlexFit can be used in new installations or easily retrofitted into existing jackshaft control panels that use supported common flame safe guards. A trained technician can drop in and install the FlexFit retrofit in as little as one day, making the FlexFit installation a fraction of the time and cost of a new BMU with many of the same control benefits.

Fuel savings are accomplished with parallel positioning combustion control with optional oxygen trim. Electricity savings are provided by the ability to control a Variable Speed Drive for the FD Fan. In addition to flame safeguard and combustion control, the FlexFit also includes optional draft control.

The FlexFit communicates to Building Automation Systems by Modbus or optional Ethernet. And because it is microprocessor-based and pre-engineered, the FlexFit is an economical alternative to more expensive PLC-based boiler controllers. The parts are in stock for immediate delivery and require no programming.

“This is a control solution that delivers benefits for all members of an operation team,” said David Bohn, President and CEO of Preferred Utilities. “Owners will see savings through electrical and fuel efficiency, and they’ll have tighter control of boiler room functions. Managers will be able to get ahead of emergencies before they happen, and technicians will appreciate the easy installation, in-and-out maintenance, and local support.”

With a flexible design that is more affordable, more accessible, and more accurate, FlexFit is the retrofit solution you’ve been waiting for. For more information or to get a quote, visit

About Preferred Utilities Manufacturing Corporation:

Preferred Utilities Manufacturing Corporation is an engineering-based manufacturer of products for commercial, institutional, industrial and nuclear power facilities. Our products include fuel oil handling systems and components, boiler instrumentation and controllers, high quality burners, and nuclear power plant outage reduction tools and component parts. Continuous research and development are applied to our existing products and help us to lead the industry with new and innovative power plant solutions. Our manufacturing, engineering, and administrative headquarters is located in Danbury, Connecticut, and regional sales and service offices are located throughout the United States.

Share article on social media or email:

View article via:

Pdf Print

Contact Author

Cheryl Rice
Web Savvy Marketers
+1 8608889387
Email >
Visit website