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** Note: Product Title reflects this boiler's Net AHRI Rating, Water (MBH)

Product Specifications
  • 84% AFUE
  • 70 MBH Input
  • 59 MBH DOE Heating Capacity
  • 51 MBH Net AHRI Rating, Water
  • Chimney vented
  • Integrated boiler control
    • User-friendly
    • Energy-saving “thermal purge” feature circulates residual warm water in heating system prior to firing boiler
    • Integral LWCO (IDL-1200)
    • Additional pump relay
  • Natural gas
  • Cast iron heat exchanger: Meets the ASME Boiler and Pressure Vessel Code
  • Metal section connectors: Resist chemicals, increases the life of the boiler
  • Step-opening gas valve: Provides smooth & quiet start-up
  • Lifetime limited warranty

Standard Equipment
  • Insulated steel jacket
  • Integral draft diverter, damper and connector included
  • Heavy gauge 1" base insulation
  • Integrated boiler control – simple, self-diagnostic, with 3-digit readout for status
  • Step-opening redundant gas valve
  • 130°F minimum return temperature rating
  • Spark ignition with continuous retry
  • User-friendly wiring with 120V J-box
  • Circulator – Grundfos
  • Cast iron section assembly
  • Resettable blocked vent switch
  • Boiler drain valve
  • Cast iron supply manifold with safety relief valve tapping
  • Stainless steel burners
Hide Description
Manuals (2)
Fuel Type:

Natural Gas



System Type:

Hydronic (Water)

Width (Inches):


Height (Inches):



Chimney Vent

EI/Spark Ignition

Vent Size:


Gas Connection:


BTU Input:


AHRI Rating:


DOE Rating:


Pump Type:



Limited Lifetime on Heat Exchanger/ 1 Year on Component Parts


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