Bobs Manuals
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission.
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network
The following Sentry manuals, or owner's guides, are available for download from our server. Choose the link that corresponds to the Sentry model's manual you wish to download.
The user manuals come in pdf format for quick downloads. Our user manuals are in the common pdf format also for easy viewing and printing. You will need to have Adobe Acrobat reader (which is free) installed on your system, or some other software capable of viewing pdf files in order to view or print the owner's manual.
Choose the model of Sentry manual:
  • S-120-EDP - 120,000 BTU Input, 88,000 BTU Output Intermittent Ignition Natural Gas Water Boiler
  • S-90EDP - Slantfin Natural Gas Boiler with 90,000 BTU Input 66,000 Output BTU