Slant/Fin Sentinel (SE-70 to SE-210)

The Sentinel is Slant/Fin's gas cast-iron hot water boiler line, documented on the hub at slantfin.com/library/sentinel/ with the official breadcrumb 'Boilers > Sentinel Boiler' — the active library section. The official IOM (Pub. SE-42, P/N 46-0770) names the models 'HOT WATER MODELS SE-70 THROUGH SE-210': SE-70, SE-105, SE-140, SE-175 and SE-210. Slant/Fin prints no 'current' or 'discontinued' sentence; section placement is the only official status wording, so Boilers.ca describes the line as current library / documents available on slantfin.com without asserting current production.

The IOM prints dimensions and weights only: 3–7 sections, jacket widths from 11⅛" to 23⅛", and full-of-water weights from 250 to 485 lb. There is no per-model input or AFUE table in the text — those values live on each unit's rating plate and in the official Energy Guide label PDFs, which are image-only; no OCR was performed and no values were invented, so Boilers.ca keeps the Sentinel at series level. The design is the same Category I chimney-vented cast-iron construction as the Sentry with the Hydrolevel HydroStat 3200-Plus control (the hub links the control manual).

Printed discrepancy to note: the manual title and dimensions table print 'SE-70 THROUGH SE-210', while page 2 also prints 'MODEL SE-70 to SE-245' — only the five SE models have data, and both official wordings are captured. No official Canadian-sales statement was found, so canadianStatus stays 'unknown'; gas, venting and combustion work belongs with a licensed contractor.