ULTRA GAS S3 CT GAS BOILER
- 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
- 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
TECHNICAL DATA
| Model | AFUE (%) | CSA Input (MBH) | DOE Heating Cap. (MBH) | Net AHRI (MBH) | Vent Size (in.) |
|---|---|---|---|---|---|
| UG-80 | 93.5 | 80 | 71 | 62 | 2 or 3 |
| UG-105 | 94 | 105 | 94 | 82 | 2 or 3 |
| UG-155 | 94 | 155 | 139 | 121 | 3 |
| UG-230 | 94.1 | 230 | 207 | 180 | 3 or 4 |
| UG-299 | 92.5 | 299 | 270 | 235 | 4 |
| UG-399 | 91.7* | 399 | 364* | 317 | 4 |