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CGa Gas Boiler Series 1 and Series 2



Product Type: GAS-FIRED RESIDENTIAL

High-efficiency CGa Gas Boiler Series 1 and Series 2 are easy to install and service. Applications include: residential, light commercial, multiple boilers, indirect-fired water heating, radiant heating, and much more!

  • Compact design saves valuable living space
  • Stainless steel burners for quieter ignition, longer life, and improved combustion
  • Gas fired water boiler with cast iron sections
  • Easily accessible controls, vertical flueways, and top cleaning for easy and quick servicing
  • Up to 84% AFUE

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Series 1 Specifications
Model Input MBH PIDN AFUE SPDN AFUE SPDL AFUE DOE Heating Capacity
(MBH)
Net I=B=R Ratings
(MBH)
Min. Chimney Size
CGa-25 52 84.0 81.5 83.3 44 38 4" x 20'
CGa-3 70 84.0 81.6 83.7 59 51 4" x 20'
CGa-4 105 84.0 81.7 83.7 88 77 5" x 20'
CGa-5 140 83.5 81.8 83.7 117 102 6" x 20'
CGa-6 175 83.2 81.9 83.6 146 127 6" x 20'
CGa-7 210 83.0 82.0 83.6 175 152 7" x 20'
CGa-8 245 82.7 82.1 83.6 204 177 7" x 20'

Series 2 Specifications
Boiler Model Number A.G.A. Input (MBH) PIDN AFUE DOE Heating Capacity (MBH) Net I=B=R Ratings (MBH) Min. Chimney Size
CGa-25 52 84.0 44 38 4" x 20'
CGa-3 70 84.0 59 351 4" x 20'
CGa-4 105 84.0 88 77 5" x 20'
CGa-5 140 83.5 117 102 6" x 20'
CGa-6 175 83.2 146 127 6" x 20'
CGa-7 210 83.0 175 152 7" x 20'
CGa-8 245 82.7 175 152 7" x 20'