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Leonard Heating & A/Cstarstarstarstar4.2 / 5

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12 Total Reviews /files//leonard-logo.jpg507-291-6906$1420 N 3rd Street, Saint Peter MN

Sentry 84+% Natural Draft Cast Iron Gas Boiler

Sentry is a gas fired hot water boiler that is ideal for a wide variety of boiler requirements using propane or natural gas. The new Sentry Vestibule version features front mounted controls for easy setup during installation and hassle-free maintenance. The Sentry’s classic advanced design provides years of trouble-free' efficient operation while providing easy installation' even in sites with low chimney connections or low overhead clearance.

  • Hot water boiler
  • Up to 84.4% AFUE
  • Intermittent ignition
  • Integral draft hood fit sites with low clearance
  • Advanced natural draft design promises efficiency & reliability
  • Includes a reliable' heavy-duty motorized vent damper to maximize efficiency
  • Cast iron heat exchanger
MODELInput MBtuHOutput MBtuHAFUEDimensions
HxWxD
Water Content
Gal.
Weight
Lbs.
S-3434.0 29.0 84.0 28.5x19.75x14.6 0.00 190
S-6060.0 51.0 84.4 32.5x19.75x17.6 0.00 250
S-9090.0 76.0 84.2 32.5x19.75x20.6 0.00 310
S-120120.0 125.0 84.1 32.5x19.75x23.6 0.00 365
S-150150.0 125.0 83.4 32.5x19.75x26.6 0.00 425

Warranty Information

  • All Parts for 12 months -
  • Heat Exchanger - Limited lifetime

Available Documents