The Sentry Boiler fits into replacement sites with low chimney breeching
or low overhead clearance. Sentry models have an integral draft
diverter and do not require a seperate draft hood. Chimney vent
connections heights begin at 38-1/2", nearly a foot and a half lower
than typical natural draft boilers.
Sentry's low profile permits installation in sites with low chimney breeching or low overhead clearance.
An advanced design heat exchanger permits Sentry to operate with high
efficiency using simple, dependable natural draft technology. Sentry
operates with efficiencies up to 84.4% AFUE. The flue passage design,
thermal pin pattern and consistent wall thickness of Sentry's cast-iron
heat exchanger sections ensure uniform heat transfer with less thermal
strain and metal fatigue. Slant/Fin uses only reliable metal push nipple
to connect individual sections. All models included a reliable, heavy
duty motorized vent damper to maximize efficiency.