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WGO Series 4 Oil-Fired Water Boiler

  • wgo-series-4-img.jpg
  • Dedicated water-only oil boiler with cast iron sections - no tankless heater or cover plate
  • Quick open top and swing-away burner door with full chamber access increases visibility for inspection and servicing
  • Two flue outlets- rear and top - for complete venting flexibility
  • Recessed target wall design protects unit from flue brushes
  • Includes factory-wired circulator, service switch and Weil-McLain exclusive captured elastomer seals for added reliability
  • Available assembled or as a knockdown for installation areas with limited space

Technical Data

Model Burner Input Rating GPH Burner Input Rating MBH Heating
Capacity (MBH)
Net
Ratings (MBH)
AFUE Draft Loss
Through
Boiler
(In. w/c)
Min. Chimney Size Rectangular (In.) Min. Chimney Size Round (In.) Min. Chimney Size Height (Ft.) Approx.
Shipping Weight
(Lbs.)
ENERGY STAR Approx.
Shipping Weight
(Lbs.)
WGO-2 0.70 98 86 75 86.4 0.10 8x8 6 15 540   540
WGO-2RD 0.70 98 86 75 87.0 .010 8x8 6 15 540 YES 540
WGO-3R 0.80 112 98 85 86.2 .020 8x8 6 15 595   595
WGO-3RD 0.80 112 98 85 87.0 .010 8x8 6 15 595 YES 595
WGO-3D 0.95 133 115 100 86.0 .020 8x8 6 15 595   595
WGO-4R 1.00 140 122 106 86.2 .010 8x8 6 15 645   645
WGO-4RD 1.00 140 123 107 87.0 .010 8x8 6 15 645 YES 645
WGO-4D 1.20 168 146 127 86.0 .010 8x8 6 15 645   645
WGO-5R 1.20 168 147 128 86.1 .015 8x8 7 15 760   760
WGO-5RD 1.20 168 148 129 87.0 .015 8x8 7 15 760 YES 760
WGO-5D 1.45 203 176 153 86.0 .015 8x8 7 15 760   760
WGO-6R 1.40 196 171 149 86.1 .015 8x8 7 15 860   860
WGO-6RD 1.40 196 173 150 87.0 .015 8x8 7 15 860 YES 860
WGO-6D 1.75 245 213 185 86.0 .015 8x8 7 15 860   860
WGO-7R 1.60 224 196 170 86.0 .015 8x8 8 15 930   930
WGO-7RD 1.60 224 197 171 87.0 .015 8x8 8 15 930 YES 930
WGO-7D 2.00 280 244 212 86.0 .015 8x8 8 15 930   930
WGO-8 2.30 322 266 231 - .025 8x12 8 20 1,030   1,030
WGO-9 2.55 357 295 257 - .030 8x12 8 20 1,135   1,135