| Model |
I=B=R Burner Cap (GPH) |
DOE Heating Capacity (MBH) |
Net I=B=R Ratings (MBH) |
Min. Chimney Size |
Annual Fuel Utilization Efficiency (AFUE) |
| UO-3 (0.80 GPH) |
0.80 |
98 |
85 |
8 x 8 |
86.5 |
| UO-3 (1.00 GPH) |
1.00 |
122 |
106 |
8 x 8 |
86.5 |
| UO-4 |
1.20 |
146 |
127 |
8 x 8 |
86.2 |
| UO-5 |
1.40 |
172 |
150 |
8 x 8 |
86.5 |
- 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
PRODUCT BROCHURE CLICK HERE
BOILER MANUAL CLICK HERE
USER MANUAL CLICK HERE
