Description
- Cast aluminum coated heat exchanger
- Up to 94% DOE AFUE efficiency
- Designed to operate in low temperature condensing applications
- Outdoor reset and domestic hot water priority
- Modulates with 5:1 turn-down ratio
- High grade stainless steel burner features quiet operation
- U-Control gives you the power for easy set-up and maintenance:
- Multiple set-up and zone options
- System sensing recognizes system and outdoor temperatures
- Temperature management for up to three different set-points
- Control multiple boilers from a single control panel
- Standard screen messages provide service alerts and maintenance reminders
Technical Data
| Model | AFUE (%) | CSA Input (MBH) | Net (MBH) | DOE Heating Cap. (MBH) | Vent Size (in.) |
|---|---|---|---|---|---|
| UG- 80 | 93.5 | 80 | 62 | 71 | 2″ or 3″ |
| UG-105 | 94 | 105 | 82 | 94 | 2″ or 3″ |
| UG-155 | 94 | 155 | 121 | 139 | 3″ |
| UG-230 | 94.1 | 230 | 180 | 207 | 3″ or 4″ |
| UG-299 | 92.5 | 299 | 235 | 270 | 4″ |
| UG-399 | 91.7* | 399 | 317 | 364* | 4″ |
Downloads
Brochures and Sales Collateral
Weil-McLain_Ultra-Series4-Brochure_WM1905-web
Manuals
Ultra Gas Boiler Manual 0119 Web Version
Ultra Series 4 Users Manual 550100401_0617 WEB For Viewing Only
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