Weil-McLain Ultra 399 - 317,000 BTU Output High Efficiency Boiler (Nat Gas or LP)
383-500-706
Categories
Description
**Series 3 Ultra Boiler Key Features - 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 - Electronic control module automatically adjusts blower speed and gas flow rate in response to environment - Modulates with 5 to 1 turndown 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. Propane Conversion Orifice included for LP Gas Applications
Manuals
| # | Title | Languages | Pages | Updated |
|---|---|---|---|---|
| 1 | Homeowner Protection Plan | EN | 2 | 2022-03-23 |
| 2 | Install Instructions (Ultra Manifold Kit) | EN | 2 | 2022-03-23 |
| 3 | Install Instructions (Venting) | EN | 28 | 2022-03-23 |
| 4 | Installation Pocket Guide | EN | 7 | 2022-03-23 |
| 5 | Product Overview | EN | 8 | 2022-03-23 |
| 6 | Registration Card | EN | 2 | 2022-03-23 |
| 7 | User Guide | EN | 124 | 2022-03-23 |