Burnham Revolution, 73,000 BTU Output High Efficiency Cast Iron Boiler (LP Gas)

NOTE: This boiler is designed for Direct Venting. For Power Venting, Indoor Combustion Air Kit (61106008 for RV3-RV4, 61106009 for RV5-RV7) and PVC Air Intake Kit (6116054) are required (sold separately) The Revolution Boiler is one of Burnham Hydronics most efficient cast iron, gas-fired boilers. The Revolution Boiler exceeds the minimum requirements for its ENERGY STAR® rating. The Revolution boiler is an advanced cast iron design concept that was developed from the ground up by Burnham engineers. Features: High efficiency boiler Cast iron sectional design w/ diamond pin heat transfer surface Water boiler w/ low temperature return water capabilities All piping and venting connections on top of boiler Step opening gas valve and electronic ignition provides for smooth start-up Stainless steel burner helps ensure long-term reliability and high efficiency operation