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Effortless comfort, Maximum Efficiency
Ultra® Oil Boiler
Features
Simplified System
Dedicated water-only oil boiler
Flexible Venting
Flexible direct or chimney venting – no power assisted fan needed
Easy Access
Reversible swing-away burner door
Three-Pass Design
Three-pass cast iron heat exchanger with captured elastomer seals
HIGH EFFICIENCY
87% AFUE Series 3
Clean Design
Sleek, innovatively styled jacket with rear piping and wiring openings, and concealed controls for an
appliance-like appearance.
B100 Certified Oil Boilers
Sustainable Heat for a Changing World
Weil-McLain SGO oil boilers are now B100 Certified, delivering reliable performance while supporting renewable heating. When used with approved Beckett and Carlin oil burners, our boilers are certified to operate with up to 100% biodiesel, giving homeowners and contractors a dependable, efficient solution that’s built for today and ready for the future.
Technical Specs
| MODEL | AFUE (%) | BURNER INPUT RATING (GPH) | NET (MBH) | DOE HEATING CAP. (MBH) | VENT SIZE (IN.) |
|---|---|---|---|---|---|
| UO-3 (0.80 GPH) | 87 | 0.8 | 86 | 99 | 8 x 8 |
| UO-3 (1.00 GPH) | 87 | 1 | 107 | 123 | 8 x 8 |
| UO-4 | 87 | 1.2 | 129 | 148 | 8 x 8 |
| UO-5 | 87 | 1.4 | 150 | 173 | 8 x 8 |
Downloads
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