High Efficiency Comfort
Ultra 3-UE Condensing Gas Boiler
All Ultra boilers feature AFUE efficiencies in the range of 95.2 - 96.4%. These are some of the highest efficiencies in the industry, and when the Ultra is used in low-temperature applications such as radiant heating in can achieve efficiencies of up to 98%.
The Ultra boiler is designed to be environmentally friendly and exceeds the highest North American environmental air-quality standards.
Standard Features
- ASME H-stamp Heat Exchanger
- Cast Aluminum Block
- Stainless Steel Burner
- Negative Pressure Gas Valve
- Sealed Combustion and electronic ignition
- Fully packaged with:
- Taco circulator
- Sidewall vent kit
- Pressure relief valve
- Variable speed inducer fan
- Outdoor temperature Sensor
- Adjustable boiler legs
- Condensate trap with drain tee
- Easy adjustment for natural gas or propane
- Ultra Control Module With:
- 3.5" Digital display
- Multiple boiler functionality
- Alarm control functionality
- Ignition control
- High limit
- Outdoor reset
- Low water protection
- DHW priority
- Heating and DHW pump controls
- Electronic ignition
- PVC Venting Up To 100'
- Sealed combustion
- Floor Mount or Wallhung
- Maintains Optimal Air and Fuel Ratio at All Firing Rates
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| Model ID | Model Name | Input Range MBH | DOE Capacity MBH | IBR Cap. MBH | AFUE | Water Content | Standard Taco Pump Model |
|---|---|---|---|---|---|---|---|
| 28629 | UG-80 | 16.0 - 80.0 | 71.0 | 62.0 | 95.2 | 0.69 | 007 |
| 28630 | UG-105 | 21.0 - 105.0 | 94.0 | 81.0 | 95.3 | 0.82 | 007 |
| 28631 | UG-155 | 31.0 - 155.0 | 139.0 | 123.0 | 95.6 | 1.17 | 0014 |
| 28632 | UG-230 | 46.0 - 230.0 | 207.0 | 183.0 | 95.4 | 1.57 | 0014 |
| 28633 | UG-299 | 62.0 - 299.0 | 270.0 | 234.0 | 96.4 | 2.10 | 0014 |
| 28634 | UG-399 | 80.0 - 399.0 | 365.0 | 317.0 | 91.7 | 2.10 | 2400-20 |
| Model ID | Model Name | Vent Size | Water Connections | Gas Connection | HxWxD | Weight |
|---|---|---|---|---|---|---|
| 28629 | UG-80 | 2 or 3 | 1 | 1/2 | 43.1x22.7x22.1 | 199 |
| 28630 | UG-105 | 2 or 3 | 1 | 1/2 | 43.1x22.7x22.1 | 207 |
| 28631 | UG-155 | 3 | 1 | 1/2 | 43.1x22.7x22.1 | 234 |
| 28632 | UG-230 | 3 or 4 | 1 | 1/2 | 43.1x22.7x22.1 | 246 |
| 28633 | UG-299 | 4 | 1-1/4 | 3/4 | 47/75x22.7x22.1 | 297 |
| 28634 | UG-399 | 4 | 1-1/4 | 3/4 | 47/75x22.7x22.1 | 297 |