Ultra Series 3-UE delivers peace of mind, unmatched comfort and immediate payback in energy savings.
•Gas fired water boiler with cast aluminum heat exchanger
•Venturi mixing body mixes air and gas providing higher efficiency
•Designed to operate in low temperature condensing applications
•Outdoor reset and domestic hot water priority standard
•Negative regulated gas valve precisely delivers gas to the boiler
•U-Control gives you the power for easy set-up and maintenance
•Modulates with 5 to 1 turn-down ratio capability
•Variable speed motor matches combustion output to heating needs
•High grade stainless steel burner features quiet operation, high efficiency, and cleaner combustion for low NOx applications
| Model | A.G.A. Input (MBH) | DOE Heating Capacity (MBH) | Net I=B=R Ratings (MBH) | Min. Vent Size | Annual Fuel Utilization Efficiency (AFUE) |
|---|---|---|---|---|---|
| UG-80 | 80 | 71 | 62 | 2 or 3 in. PVC/CPVC | 95.2% |
| UG-105 | 105 | 94 | 81 | 2 or 3 in. PVC/CPVC | 95.3% |
| UG-155 | 155 | 139 | 123 | 3 in. PVC/CPVC | 95.6% |
| UG-230 | 230 | 207 | 183 | 3 or 4 in. PVC/CPVC | 95.4% |
| UG-299 | 299 | 270 | 234 | 4 in. PVC/CPVC | 96.4% |
| UG-399 | 399 | 365* | 317 | 4 in. PVC/CPVC | 91.7%* |
*Combustion Efficiency
