Excelsior ,   Model: EX Additional Information Hi Efficiency 3 Pass Oil Boiler Designed with plug ‘n play wiring and a piping manifold tree, the state of the art 3-pass oil-fired Excelsior boiler takes that hassle out of installation. It’s easy to service too, with a flexible oil line, dual hinge swing door, wide flue ways for easy cleaning, site glass for flame observation and a sampling port for combustion readings. The compact low mass design makes the Excelsior the green choice, offering AFUEs as high as 86.5% and low standby losses. - High Efficiency 3 pass heat exchanger - Compact Footprint - Piping Manifold Tree - Plug ''n Play wiring - Dual hinged swing door - Flexible oil line - Wide Flue Ways - Site Glass - Sampling Port - All models Energy Star Rated Brochure 240007379 - Excelsior Rev. 6/09 661 kb Installation & Operation Manual 240007135 - Excelsior IOM Rev. D 3.8 MB 240007210 - Excelsior Knockdown Instructions Rev. B 1.4 MB Parts Lists 2400075118 - Excelsior Rev. D 1.9 MB Product Bulletin Excelsior Product Bulletin 3/10/09 132.8 kb Excelsior Product Bulletin 4/8/08 113.9 kb Excelsior Product Bulletin 9/29/08 18 kb Service & Technical Guide Dunkirk Radiation Tables 96.2 kb User Manual 240007138 - Excelsior Rev. B 634.5 kb Venting Addendum 240007546 - Excelsior Direct Vent Addendum Rev. B 2.7 MB Warranty 240007440 - Excelsior Warranty Rev. 4/08 28 kb