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Williamson GWA Boiler

  • 52,000 to 245,000 Btuh Input
  • Natural or Propane
  • Factory tested
  • Easy service
  • One-piece access door
  • All controls in easy reach
  • Cast iron sections with built-in air separator
  • Insulated heavy-gauge steel jacket
Model A.G.A. Input (MBH) Natural Gas Standing Pilot* LP Gas Standing Pilot* Natural Gas Intermittent Pilot* Net I=B=R Ratings (MBH) Min. Chimney Size Shipping Weight
GWA-052 52 80.2 80.4 83.0 37 4″ x 20′ 200
GWA-070 70 80.1 80.7 83.0 50 4″ x 20′ 200
GWA-105 105 80.4 81.4 83.0 77 5″ x 20′ 240
GWA-140 140 80.4 81.5 82.5 102 6″ x 20′ 280
GWA-175 175 80.5 81.6 82.2 126 6″ x 20′ 325
GWA-210 210 80.5 81.7 81.8 151 7″ x 20′ 370
GWA-245 245 80.5 81.8 81.4 176 7″ x 20′ 425
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