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Ultra Oil Boiler

  • Optional Advanced Features Module that provides indoor/outdoor reset, DHW priority, stage firing and more
  • Dedicated water-only oil boiler
  • Flexible direct or chimney venting - no power assisted fan needed
  • Reversible swing-away burner door
  • Three-pass cast iron heat exchanger with captured elastomer seals
  • Energy Star Rating
  • 87% AFUE Series 3

Technical Data

Model AFUE (%) CSA Input (GPH) Net (GPH) DOE Heating Cap. (GPH) Vent Size (in.)
UO-3 (0.80 GPH) 87 0.8 85 99 8 x 8
UO-3 (1.00 GPH) 87 1 106 123 8 x 8
UO-4 87 1.2 127 148 8 x 8
UO-5 87 1 150 173 8 x 8