IBC SL Series Boiler – High Efficiency Condensing Boiler – Heating

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  • Better efficiency 95% AFUE on the SL 26
  • 96% Thermal efficiency on the SL 40
SKU: SL Series Categories: ,
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IBC SL Series boiler convert natural gas or propane into heat with unprecedented efficiency. All residential models feature supply and return connections on both sides making them easy to install. Efficient internal layouts allow for easy inspection. With more interchangeable parts, 2 fans and 1 universal touchscreen controller, installing and servicing all models just got a whole lot easier. Multiplex racking and piping kits available for commercial models.

  • Better efficiency 95% AFUE on the SL 26.
  • 96% Thermal efficiency on the SL 40
  • Multi-boiler communication up to 9.5 million Btu/h (24 boilers) without additional controls.
  • With 24 x 399 boilers turndown ratio is 240:1 = min. firing rate range is 40,000 Btu/h all the way up to 9.5 million Btu/h in 1000 Btu/h increments.
  • PVC/CPVC/PPs approved – venting up to 400 feet.
  • Now featuring multiple zone pump control – up to 4 zones. Replacing the need for external pump controls.
  • MFZ Technology: Patented moisture management system. Protects and ensures long life for all components in the boiler.
  • DDC Control 0-10 VDC or 4-20 mA without additional controls.
  • Optional SL 40-399 316Ti Titanium enhanced heat exchanger available.
  • DHW opt out priority for multi boiler systems.
  • Reverse flow detection.
  • Up to 10 year commercial heat exchanger warranty.


Touch screen boiler controller
All IBC SL Series boilers use V-10 Touch Screen boiler control which features the latest in advance control technology and software. Easy to setup and monitor with features like Express Setup, easier Diagnostics & Intuitive Alert System with plain English Warnings & Error Messages, no boiler has ever been easier to use!

  • Express setup
  • Remote monitoring & diagnostics
  • Easy USB programmability
  • True native BACnet
  • Intuitive alert system
  • Simplified load pairing
  • Visible flame current


More built-in features

  • Built-in zone pump control – up to 4 zones. Replacing the need for external pump controls
  • MFZ Technology: Patented moisture management system. Protects and ensures long life for all components in the boiler
  • Turndown ratio of up to 10:1 means you have the power to heat your home in the coldest weather, yet reduce short cycling when the weather is mild
  • Reverse flow detection
  • Built-in outdoor reset control of water temperature.
  • Built-in CSA/UL approved low water cut-off and manual reset high limit.
  • Unmatched safety features
  • Connect your IBC Indirect Water Tank directly to the boiler without a primary loop


Materials of Construction – From its 439 or 316 Ti, high grade stainless steel heat exchanger/pressure vessel to its FeCrAlloy™ mesh burner, IBC has researched and sourced the best materials available to ensure that each boiler will operate as efficiently as possible while providing durability over the long term.
Top Quality Construction – Gas valves, combustion fans, controls – all of the components necessary to create a chain that will convert a fuel gas into reliable, efficient and comfortable heat for your home.
Ideal Combustion – The first link in the chain is to convert your fuel into heat in the most efficient way possible. Using precise fuel-air mixing and advanced burners and combustion control, IBC HC Series boiler squeeze every penny out of your energy dollar.
Deep Modulation – IBC boilers can precisely match our burn rate to the heat required by your system – saves fuel, saves wear and tear.
Efficient Heat Recovery – IBC boiler runs cool when it can and only ramps up to higher temperatures when specific loads require it (usually a small percentage of the heating season). IBC creative control methods ensure that heat is distributed only to those loads that need it at the time – more energy savings.
Advanced Diagnostic Features – intuitive and easy control set-up as well as unique system operation logging help you set up the boiler for optimum efficiency, and then maintain it, in whatever system it is connected to.

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