OVERVIEW
» Energy Efficiency with 94% AFUE
» Condensing efficiency in both Space Heating and DHW modes
» Low NOx – meets SCAQMD requirements
» Dual core heat exchanger with glycol compatible copper waterways
» Domestic hot water produced directly in the primary heat exchanger for lower maintenance
» Advanced control with near 4:1 modulation and standard outdoor reset
» Concentric venting standard on initial production (two-pipe PVC, CPVC, AL29-4C available in Q2, 2011)
» Compact size for closet installation
» Whisper-quiet operation
» EZ-Install piping bracket
» Optional Timesaver primary secondary piping with pump flange
CHALLENGER COMBI BROCHURE