Slant/Fin SX-150 to SX-210 manual Sentry a smarter choice for informed

SENTRY® A smarter choice for informed

High efficiency, cast-iron gas boiler

The boiler you choose for your home now will affect your family’s comfort--and pocketbook--for many years to come. Sentry boilers provide a blend of efficiency and reliability that will keep your home comfortably warm and your fuel costs low year after year. A new Sentry boiler can save up to 30% or more on fuel bills compared to a typical old boiler operating at 60% efficiency.

• AGA input:

“S”models 34,000 to 150,000 Btu/hr “SX”models 150,000 to 210,000 Btu/hr

•Low clearance

•Standing pilot or intermittent ignition.

•Saves energy. AFUE to 84.4%

Sentry is ideal for a wide variety of gas boiler requirements, as a replacement or for new installations. Its advanced design provides years of trouble-free, high efficiency operation while providing easy installation, even in sites with low chimney connections or low over- head clearance.

Sentry is a reliable natural draft boiler. Many boil- ers resort to pulsing or condensing technologies, copper fin-tubes and thermal bypass valves to attain acceptable efficiency. Sentry achieves high efficiency with fewer components, so there's less chance of part failure or losing your heat. Sentry’s efficiency to 84.4% is among the highest in the industry. Sentry’s heat exchanger is made of quali- ty cast-iron and assembled with durable metal push nipples. It's so reliable it comes with a lifetime limited warranty. Sentry boilers respond quickly to your thermostat’s call for heat, sending heat within moments to radiators throughout your home.

Low profile makes problem installations easy.

The Sentry boiler fits into replacement sites with low chimney breeching or low overhead clearance.

The Sentry “S” models include an integral draft diverter and do not require a draft hood. They fit into replacement sites with overhead clearance or chimney breeching as low as 381⁄2 in. above the floor.* This is nearly a foot and a half less clearance than required by typical natural draft boilers. The rear flue outlet on “S” models keeps the vent pipe out of the way of water and gas piping. Installation is faster and trimmer. “SX” models utilize an external draft hood.

“S” model with integral draft diverter

“SX” model with external draft hood

The computer-aided design of Sentry’s venting system enables “S” and “SX” models to perform effectively under a wide range of draft conditions. Sentry is one of the indus- try’s most versatile and durable high efficiency boilers.

LOW-PROFILE VERSATILITY. NATURAL DRAFT RELIABILITY

All “S” and “SX” models permit installation in sites with low chimney breeching or low overhead clearance.

*See installation instructions for specific applications and clearances.