Note: product title indicates boiler's Net AHRI (Net IBR) rating
Frontier boilers are a cost-effective and feature-rich solution for replacing most gas steam boilers on the market. They are fully packaged, low-profile (with built-in draft diverter) and use USA-made ASME cast iron heat exchanger - for a quick & easy installation & worry-free performance.
An optional near boiler piping kit (part# 850095U) is available to further simplify installation.
Boiler includes: Integrated Draft Diverter, Automatic Damper (with quick-disconnect harness), Honeywell/Resideo Gas Valve, Honeywell PressureTrol Pressure Limit (w/ auto reset & adjustable differential), Hydrolevel CycleGard LWCO, UTEC Intermittent Pilot Ignition Control, 15 psi Relief Valve (Watts or Apollo brand), Water Level Gauge Glass w/ Valves, Steam Pressure Gauge, Blocked Vent Switch, Isolation Relay, Drain Valve, Fittings (see product photo for details) and more.

  • Low-profile design with built-in draft diverter, fits in low places
  • Fully packaged and assembled
  • Assembled in Pennsylvania with USA-made components, including robust, time-tested and efficient cast iron heat exchanger with metal section connections for increased boiler life
  • Configurable for return connections on both sides

Technical Specifications:
  • Input (BTU): 103,000
  • Net AHRI Rating (BTU): 64,000
  • DOE Heating Capacity (BTU): 85,000
  • Efficiency (AFUE): 82%
  • Fuel Type: Natural Gas (can be converted to propane with 112011-01 kit)
  • Steam Sq. Ft.: 267 sqft
  • Boiler/System Type: Steam Cast Iron Gas Boiler
  • Boiler Connections: 2" NPT - Supply/Return Connections, 3/4" NPT - Relief Valve, 3/4" NPT - Drain, 1/2" NPT - Gas
  • Relief Valve Setting: 15 psi
  • Vent Type: Chimney Vent
  • Vent Pipe Size: 5" (standard Cat I galvanized chimney vent pipe)
  • Dimensions: 16" Wide x 28" Deep x 41" High
  • Weight: 420 lbs (approx shipping weight)
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