Case Studies

Diesel Exhaust Fluid Systems: Reducing Emissions at Mission Critical sites

At Preferred, we are combining security and sustainable solutions at some of our highest security project sites, data centers and mission critical facilities, such as manufacturing centers. A global pharmaceutical manufacturing company bought generators and commissioned the Preferred staff of experienced and qualified engineers to design this Diesel Exhaust Fluid (DEF) system, pumping 300 gallons (of ammonia) per […]

Converting NEMA 4 Plant Wide Controllers to the Mutli-Node Fuel System Controller

Problem: Committed to the future of our technology in hospitals, nursing homes, data centers, schools, and airports, we are converting Preferred NEMA 4 Plant Wide Controllers’s (PWC) nearing end of life to Fuel System Controller (FSC) based controllers. Pictured are before (prior to shipment in 2015) and after of one of the units that was converted in this […]

FlexFit Retrofit – More savings, More efficiency

Made in the U.S.A., Preferred retrofits provide sustainable solutions for reducing energy costs with upgraded efficiencies. At this site in Queens, NY, one of our skilled field service engineers replaced an obsolete Honeywell RM7800 L flame safeguard/ ControLinks fuel-air combination with our FlexFit Linkageless Controller. The FlexFit controller brings linkageless control to your burner with an integrated flame safeguard […]

Boiler System 101: The Advantages of Full System Integration

Danbury, CT – A boiler system functions as a critical component to the continuous operation of a facility.  It is important to maintain safe, reliable, and efficient operation while minimizing any downtime of the boiler system to prevent disruption of operation and significant loss. A boiler system consists of many sub-systems working in harmony – the boiler, the burner and its controls, boiler […]