The Peerless® PUREFIRE® PF-399, PF-850 and PF-1000 gas-fired condensing boilers are available for either natural or LP gas systems; the boilers have a thermal efficiency of up to 96.6%. The direct vent, sealed combustion, commercial-size boilers have ASME and ETL certifications for both the U.S. and Canada. A unique condensate system with built-in neutralizer component and float switch protection is a top feature of this boiler series. Other great features include a high grade stainless steel burner and heat exchanger, 120 volt convenience outlet (PF-399 only), cascade and common vent capability (common venting on PF-850 and PF-1000 only) and LoNOx operation for the good of the environment. The PUREFIRE®’s fully modulating burner assures dependable operation and maximum boiler efficiency. Zero clearance to combustibles, easy access to controls and leveling legs are other standard features that allow for ease of installation and maintenance. The PF-850 and PF-1000 boilers can be stacked to further minimize their small footprint. Boilers are easily converted from LP to natural gas and from natural gas to LP without any additional parts. PUREFIRE® boilers are equipped with a full one-year parts and labor warranty (see “Warranty” section on this site for complete details).
State-of-the-Art Control Board
All Peerless® PUREFIRE® gas boilers are equipped with a state-of-the-art control board that offers modern technology such as an outdoor reset control with an additional outdoor temperature sensor and is cascade capable for operation of up to 16 units as a single module. The control board also has built-in technology for domestic hot water priority and an energy saving heat recovery function that improves hot water performance and reduces off cycle losses. Standby temperature of domestic hot water is controlled by economic low fire operation. Additionally, the control board’s LCD status display module uses plain English for easy-to-read status and troubleshooting text while a switch to "system test mode" enables contractors to manually control the firing rate.