Underwriters Laboratories (UL) and its affiliate, Underwriters Laboratories of Canada (ULC), awarded Superior Boiler Works Inc., Hutchinson, Kan., certification for two of its packaged boiler systems.
The company earned certification for its low-emission four-pass Wetback Mohican series boilers in standard sizes from 100 to 800 hp, steam and hot water, and high- and low-pressure models. They use Power Flame burners firing gas only, gas and oil, or oil only.
The company also earned certification for its two-pass Dryback Apache series boilers in standard sizes from 80 to 200 hp, steam and hot water, and high- and low-pressure models. They use Webster Engineering burners firing gas only, gas and oil, or oil only.
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