Big enough to meet your needs... Properly matching your boiler to your needs is fundamental to achieving optimum performance. With three sizes from 84 to 124 MBH, there is a Challenger to fit your needs. Your installer can properly measure your heating and hot water requirements to ensure the perfect fit. . . ...but small enough to fit your closet The Challenger was designed to fit into the Maximum Input MBH smallest of spaces.
Integrated hot water... In this combination boiler, hot water is supplied directly from within the unit, at high efficiencies with near zero standby losses. The Challenger can maintain a set block temperature for rapid hot water delivery. The unique ‘self learning’ ECO-mode provides rapid hot water response when needed and zero standby losses during periods of no demand. . ...
Technical Specifications Model Input Modulation (MBH) CC 85 23 to 84 90% 90% AFUE 75 DOE heating Capacity (MBH) Net Boiler IBR Rating (MBH) Fuel 65 DHW flow rate at 70ºF delta T (GPM) DHW minimum flow rate (GPM) 94 82 NG and LP 2.0 NG and LP 2.5 149 (65) 194 (90) 23 1/4 17 3/4 194 (90) 25 1/2 17 3/4 0.5 DHW maximum temperature (F [C] ) Maximum CH output temperature (F [C] ) Cabinet Height (Inch) Cabinet Width (Inch) Cabinet Depth (Inch) 0.
