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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.
big on warmth, low on energy use
Engineered for comfort, designed for efficiency
Certified ENERGY STAR® and heat pump ready, this high-efficiency boiler delivers powerful, eco-friendly performance while keeping energy costs low.
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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