Heating Gas-fired Boilers (2)

AFUE Rating 94 Percent (1) 95 Percent (1) AGA Input Rating 11 to 55 MBH (1) 29 to 100 MBH (1) Air Inlet Connection 2 Inch Boiler Dimensions 18-1/2 Inch Length x 16 Inch Width x 33-1/4 Inch Height (1) 19-1/2 Inch Width x 13-3/4 Inch Depth x 26 Inch Height (1) Boiler Material Stainless Steel (Heat Exchanger) (1) Stainless Steel (Heat Exchanger), PVC/CPVC/Polypropylene/Stainless Steel (Vent) (1) Burner Type Metal Fiber and Stainless Steel, Low Nox (1) Modulating, Low NOx (1) DOE Heating Capacity 51 MBH (1) 93 MBH (1) Gas Connection 1/2 Inch Threaded (2) Gas Type Natural (1) Natural/Liquid Propane (1) GPH Recovery 3 GPM at 70 Deg F (1) Ignition Type Direct Spark (2) Net IBR Rating 44 MBH (1) 81 MBH (1) Options Low Water Cut-Off, System Sensor, 2 Inch or 3 Inch Concentric Vent Kit/Sidewall Vent Kit (1) ModBus Communication, Flow Switch, Low Water Cut-Off with Manual Reset and Test, Alarm Bell, Concentric Vent Kit, Smart System PC Software, Condensate Neutralization Kit, BMS Gateway to Lon or BACnet, Multi-Temperature Loop Control, Sidewall Vent Termination (1) Relief Valve Details 30 PSI ASME Relief Valve Supplied (2) Return Connection 1 Inch (1) Supply Connection 1 Inch (2) Tankless Heater Capacity 3 GPM (1) Type Domestic Hot Water (2) Vent Size 2 Inch (2) Venting Type Horizontal/Vertical, Direct (2) Warranty 10 Year Limited, 5 Year Limited (Parts) (1) 12 Year Limited (Heat Exchanger), 5 Year Limited (Parts) (1) Water Content 0.5 Gallon (1) 2.5 Gallon (1)