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- The ES2™ blends unmatched performance with long lasting durability and exclusive energy saving features. Designed as an optimal replacement boiler for millions of homes with existing chimneys, the ES2™ achieves an 85% AFUE. At the heart of the ES2™ is one of the most advanced cast iron heat exchangers in the industry and a well-insulated heavy-duty steel base for longevity. Even the ES2™'s control system is class leading. The IQ Boiler Control System allows the ES2™ to be easily equipped with an optional energy saving control package that can achieve up to a 15 to 20% reduction in fuel consumption according to most studies.
Burnham® Gas-Fired Steam Boiler, 3-Section, Series: ES2™, Natural Gas Fuel, 51 mbh Net IBR, 70 mbh Input, 1-1/4 in NPT Connection, Electronic Ignition, 59 mbh DOE Heating, 85 % AFUE, 120 VAC, 15 A, 3 A Fuse, 2 gal Water/Steam Content, 4 in Dia Flue Outlet, Chimney Vent, Cast Iron Housing Material, Floor Mounting, 12-3/4 in W x 33 in D x 41 in H, Domestic
- Exclusive IQ control system platform
- Reliable, American-made cast iron heat exchanger
- Designed for homes with existing chimneys
- Industry standard tapping locations fit thousands of existing boiler installations
- IQ boiler control system
- Grundfos Circulator Pump, Integrated Draft Diverter, Connector, Damper and 1 in Burner
- Connection Type1-1/4 in NPTDomestic / ImportDomesticFuel TypeNatural GasHousing MaterialCast IronIgnition TypeElectronicInput Capacity70,000 BTU/hrNet IBR Rating51Type3-SectionVent TypeChimneyAmperage Rating15 ADimensions12-3/4 in W x 33 in D x 41 in HDOE Heating Capacity59Flue Outlet Size4 in DiaFuse Size3ManufacturerU.S. Boiler CoManufacturer #ES23BNI-GMounting TypefloorSeriesES2Water / Steam Content2