• Efficiency up to 87% AFUE, ENERGY STAR® Certified (EXB4075, EXB5100, EXB6130 and EXB7165)
  • Capacity: Multiple Firing Rates
    • 4 Section – 105 and 126 MBH
    • 5 Section – 140 MBH
    • 6 Section – 182 MBH
    • 7 Section – 231 MBH
  • High limit control with
    • LED display
    • Easy to program dial settings
    • Boiler water temperature reset
    • Low water cut off functionality
  • Compact footprint
  • Burners and venting options
  • Innovative American Manufacturing
  • Warranty
    • 20 Year non-prorated limited warranty

  • Beckett or Riello Burner
  • Manual Reset High Limit with Plug-in Molex Connectors
  • Direct Vent

(See Installation, Operation and Maintenance Manual for complete instructions)

Brochure
Excelsior EXB Brochure Rev. 6/12
Excelsior EXB Brochure Rev. 7/13
Excelsior EXB Brochure Rev. 12/14
Excelsior EXB Brochure Rev. 6/09
Excelsior EXB Brochure Rev. 4/09
Excelsior EXB Brochure Rev. 4/08
Excelsior EXB Brochure Rev. 9/15
Excelsior EXB Brochure Rev. 10/15
Excelsior EXB Brochure Rev. 8/17
Excelsior EXB Brochure Rev. 1/18
Engineering Documents / Resources
Excelsior EXB Direct Vent Addendum Rev. B
Excelsior EXB Direct Vent Supplemental Instructions Rev. B
Excelsior EXB Knockdown Instructions Rev. B
Excelsior EXB Knockdown Instructions Rev. A.
Excelsior EXB Vent Connection Kit Instructions Rev. B
Installation & Operation Manual
Excelsior EXB IOM Rev. B 07/08
Excelsior EXB IOM Rev. B 5/12
Excelsior EXB IOM Rev. A 05/12
Excelsior EXB IOM Rev. E 12/14
Excelsior EXB IOM Rev. D 12/13
Excelsior EXB IOM Rev. D 1/09
Excelsior EXB IOM Rev. C 08/12
Excelsior EXB IOM Rev. C 11/08
Excelsior EXB IOM Rev. A 04/08
Excelsior EXB IOM Rev. F
Parts Lists
Excelsior EXB Parts Rev. H
Excelsior EXB Parts Rev. J
Excelsior EXB Parts Rev. C 08/12
Excelsior EXB Parts Rev. B 05/12
Excelsior EXB Parts Rev. E 11/13
Excelsior EXB Parts Rev. D 02/13
Excelsior EXB Repair Parts Rev. A
Excelsior EXB Parts Rev. B 08/08
Excelsior EXB Parts Rev. E 02/10
Excelsior EXB Parts Rev. D 10/09
Product Bulletin
Excelsior EXB Product Bulletin 3/10/09
Excelsior EXB Product Bulletin 9/29/08
Excelsior EXB Product Bulletin 4/8/08
User Manual
Excelsior EXB User’s Manual Rev. B
Excelsior EXB User’s Manual Rev. A
Oil Equipment Home Owners Instructions
Warranty
Dunkirk Consolidated Cast Iron Boiler Warranty Rev. B Eff. 10/20
Excelsior EXB Warranty Rev. 4/08
Dunkirk Consolidated Boiler Warranty Rev. D
Dunkirk Consolidated Boiler Warranty Rev. E
Dunkirk Consolidated Boiler Warranty Rev. A Eff. 10/20

product-1018

Very pleased with the work and the way it performs.

Stephen Almy
Product Reviewed:
Excelsior EXB Series
product-1018

Highly recommended by contractor and a great warranty.

Jody Rupert
Product Reviewed:
Excelsior EXB Series
product-1018

So far it is quiet and efficent.

Glenn Barnes
Product Reviewed:
Excelsior EXB Series
product-1018

I would recommend this product. This is not my 1st dunkirk boiler. I had one in a previous home that i owned. The contractor (Oms Heating & Plumbing) that installed boiler, I would highly recommend. He did a very neat and professional job

Paul Ott
Product Reviewed:
Excelsior EXB Series
product-1018

Compact size, excellent price, functional.

Anonymous
Product Reviewed:
Excelsior EXB Series