Slant Fin Cast Iron Boiler, 1-1/2" Supply/Return, 175 MBH, 84% AFUE, Natural Gas, Floor Mount, Atmospheric Chimney Vented

  • Brand: Slant/Fin®
  • AFUE Rating: 84 Percent
  • AGA Input Rating: 175000 BTU/Hour
  • Air Inlet Connection: 3/4 Inch
  • Applicable Standard: AHRI, ASME, CSA (Canada and US), DOE
  • Boiler Dimensions: 20-1/8 Inch Width x 19-3/4 Inch Depth x 28-7/16 Inch Height
  • Boiler Height Including Draft Hood: 47 Inch
  • Boiler Material: Cast Iron
  • DOE Heating Capacity: 148000 BTU/Hour
  • Gas Type: Natural
  • Ignition Type: Intermittent
  • Inclusions/Features: Display, LED Light, Metal Push Nipple, Specially Shaped Thermal Pin, Thermal Pre-Purge, Thermal Targeting Technology
  • Net IBR Rating: 129000 BTU/Hour
  • Type: 2-Way, Atmospheric, Hot Water
  • Vent Size: 6 Inch
  • Warranty: Lifetime Limited
  • Features and More


  • Reliable Natural Draft Design
  • Quality Control Features
  • High Performance Heating
  • Thermal Targeting Technology to Conserve Fuel by Monitoring Heating Demand
  • Low Water Cut-Off Function
  • Thermal Pre-Purge Option to Save Fuel
  • Display Shows Boiler Water Temperature and Boiler Control's Setting
  • LED Lights Provides Information of Boiler Operation
  • Easy Installation and Reliable Operation that Natural Draft Design Provides Intermittent Ignition
  • High Performance Cast-Iron Heat Exchanger
  • Specially Shaped Thermal Pins Promoting Efficient Heat Transfer
  • No Mechanical Combustion Aids are Required
  • Special Port Construction will Not Permit Flame to "Lift" or Flash Back
  • Limited Lifetime Warranty


    Thermal Targeting Technology, Thermal Pre-Purge, Display, LED Light, Specially Shaped Thermal Pin, Metal Push Nipple