| Fuel Type: | Oil |
|---|---|
| Boiler Type: | High Efficiency |
| BTU Input: | 196000 |
| DOE Rating: | 172000 |
| IBR Rating: | 150000 |
| Efficiency: | 86.5% |
| System Type: | Hydronic (Water) |
| Vent Type: | Atmospheric |
| Water Connection: | 1-1/2" |
| Height (Inches): | 40" |
| Width (Inches): | 22-1/16" |
| Depth (Inches): | 33" |
| Warranty: | Limited Lifetime on Cast Iron Sections/1 Year on Parts |

Replacement Parts
SKU: 386-901-005
Brand: Weil-McLain
The UO-5 boiler requires 6" vent piping. You may also refer to page 7 for chimney and venting specification http://weil-mclain.com/en/assets/pdf/UO_Series_2_Brochure_1012.pdf
The gauges and circulator are both included. The burner is sold separately. Please see sku number 521-100-032.
The circulator and gauges are included. The burner is sold separately. See sku number 521-100-032.
If you order a direct vent kit you get vent piping, but that is just for direct vent side wall. Zones depend on the BTU's needed.
You may want to consider the UO-4 boiler, which has a Net I=B=R rating of 127,000 BTUs. The full model number is 386-901-001. Net I-B-R ratings de-rate the output BTUs by approximately 15%, assuming that the boiler is installed in an unheated area.
This boiler, Weil-McLain WGO Series, and Biasi boilers can all function as cold-start boilers.
The Ultra Oil boilers have a higher efficiency than the WGO series. They can also be chimney or direct vented while the WGO boilers are only chimney vented.