Meeting Customer needs with Complete Packages

Made in the U.S.A., This project was fast tracked so all burners got their own set of wheels!

Preferred was happy to work closely with one of our discriminating, long time State Agency customers to package these excellent Preferred combustion and controls with Johnston boilers – together for an ultra high efficiency and low emissions boiler plant.

The project includes (2) 400 HP Johnston 4-pass boilers with Preferred API-AF burners (as seen in photo), firing #2 oil only, air-atomized, and with Preferred BurnerMate Universal Combustion Controls, Draft, Drum Level, O2 Trim, and Smoke Opacity control/monitoring.

In addition, (2) 200 HP Johnston 4-pass boilers with a Preferred API-AF burner, firing #2 oil only, air-atomized, and with Preferred BurnerMate Universal Combustion Control, Draft, Drum Level, O2 Trim, and Smoke Opacity control/monitoring.

Burners are 8:1 turn down firing oil, <60 PPM (No FGR) NOx, and have a <3.5% O2 50-100% firing rate. The plant obtains substantial (>80%) electricity savings by being able to turn down the combustion air fan motor from 60 to 15 Hz through the firing range.

Started up by Preferred Utilities combustion field engineers. www.preferred-mfg.com

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