Rheem RTGH-84XLN Outdoor Natural Gas Condensing Tankless Water Heater Low Nox

Next Generation Burner Technology Industry Best! .26 GPM Minimum Flow Rate, .40 GPM Minimum Activation Flow Rate UMC-117 remote control and 10 ft. of thermostat wire is included EZ-Lint cable available for high demand applications to connect two thankless units to operate as one Manifold up to 6 units with an optional MIC-6 manifold control board Exclusive! All Rheum models can be linked in up to 20 unit manifold installations by using the optional MIC-180 and MICS-180 manifold control assembly High-altitude capability - up to 9,840 ft. elevation above sea level (no chip required) Exclusive! Guardian OFWTM overheat film wrap All Rheum thankless models are third-party efficiency certified by GAMA Continuous hot water, energy saving and compact, space saving design Intelligent electronic controls designed to increase energy efficiency and safety Self Diagnostic System Digital display shows temperature setting and maintenance codes.