Burnham Cast Iron Boiler, 1-1/4" Supply/Return, 172 MBH Input, 84% AFUE, Natural Gas, Floor Mount, Atmospheric Chimney Vented

BU206EN MFG #: 206-EN
  • Brand: Burnham®
  • Applicable Standard: AHRI, ASME, ETL (Canada and USA)
  • Gas Type: Natural
  • Gas Connection: 1/2 Inch Threaded
  • Pressure Rating: 50 psi
  • DOE Heating Capacity: 145 MBH
  • AGA Input Rating: 172 MBH
  • AFUE Rating: 84 Percent
  • Boiler Dimensions: 22 Inch Width x 27 Inch Depth x 32 Inch Height
  • Boiler Material: Cast Iron
  • Burner Type: Stainless Steel
  • Ignition Type: Electronic
  • Inclusions/Features: 100 Percent Shut-Off Combination Step-Opening Redundant Gas Valve with Regulator Section, Flame Roll-Out Switch, Pilot Burner, Stainless Steel Burners
  • Options: Drain Valve, Intelligent Hydronic Control, Resettable Vent Switch
  • Relief Valve Details: 3/4 Inch Threaded
  • Return Connection: 1-1/4 Inch Threaded
  • Supply Connection: 1-1/4 Inch Threaded
  • Vent Size: 6 Inch
  • Warranty: Lifetime Limited
  • Water Content: 5 Gallon
Solid, Reliable, Time Tested Cast Iron Boiler with "Out-of-the-Box" Simplicity For years, the Series 2 has been the industry benchmark for cast iron gas-fired boilers. Its time proven design blends a long lasting cast iron heat exchanger with a heavy-duty steel base and high quality boiler controls to provide exceptional value for the homeowner. Heating professionals across the country have relied on the Series 2 to provide their customers years of comfortable, low maintenance operation making it an exceptional value in your home.
  • Features and More


  • Heat Exchanger Consumes Natural or LP Gas
  • Rugged Cast Iron Heat Exchanger
  • High Quality Boiler Control Components
  • Low Cost of Ownership
  • Durable Steel Jacket
  • Industry Leading Reliability
  • Limited Lifetime Warranty


    100 Percent Shut-Off Combination Step-Opening Redundant Gas Valve with Regulator Section, Stainless Steel Burners, Pilot Burner, Flame Roll-Out Switch