THE P-K MACH DUAL FUEL CONDENSING BOILERS keep running even in emergency situations. The high-efficiency boilers can be changed from natural gas to propane simply by flipping a switch. They are offered in sizes ranging from 750 MBtu/hr to 4,000 MBtu/hr. Features include a low water–side pressure drop, a variable speed combustion air blower, the easy-to-operate ENVI control system, and a fully independent cast sectional heat exchanger. The boilers are fully modulating with a 5:1 turndown, are certified at 3.5" minimum gas pressure, and deliver low NOx emissions. Models are available for roof and outdoor installation.
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