System: Hot Water
Combustion: Natural Draft, atmospheric
Capacity: 70 – 210 MBH Input
Efficiency: to 84%
North America’s best value in replacement gas hot water boilers
Input: 70,000 to 210,000 Btu/hr
Efficiency to 84% AFUE
High-performance cast-iron heat exchanger
The Sentinel boiler’s S-Series heat exchanger has for years been a “workhorse” of the heating industry, in boilers chosen by heating contractors for performance and reliability. It’s made of quality cast-iron and assembled with durable metal push nipples.
Specially shaped thermal pins promote efficient heat transfer. The boiler heats quickly, sending warmth to radiators throughout your home within moments of your thermostat’s call for heat. The Sentinel boiler is so reliable it comes with a lifetime limited warranty
Enjoy the easy installation and reliable operation that natural draft design provides, plus high efficiency too. With intermittent pilot ignition, Sentinel’s AFUE’s range to 84%.
Metal push nipples avoid leaks
Metal Push Nipples Avoid LeaksSlant/Fin uses only metal push nipples that expand and contract with the individual boiler sections that they connect. In many ordinary boilers, flimsy rubber or plastic gaskets are substituted for metal push nipples and are subject to deterioration and leaks.