Flexcore Symmetrical Firetube boilers bring hydronic heating products to unprecedented levels of operating efficiency. Unlike other manufacturers; from start to finish the Flexcore was designed, developed and engineered by the experts at RBI. Engineered for performance and longevity the Flexcore utilizes a perfectly temperature balanced heat exchanger that provides not only the highest efficiencies but also a durability beyond that of any competitive firetube boiler on the market.

Using all of today’s modern technologies, including pre-mix burners, modulating firing rates up to 20:1 and integrated cascade controls, IE² offers superior performance and application flexibility. Units are PVC, polypropylene and stainless steel vent capable and can be installed in multiple unit configurations using its on-board boiler control configuration – providing flexible modulation for maximum efficiencies.

Unlike most condensing products available today which publish the highest efficiencies at the lowest inputs, the Fusion is capable of attaining efficiencies as high as 99% at Full Input!

The full modulation firing system continuously varies the energy input to precisely match heating load without overfiring or wasting fuel.

The Fusion’s heat exchanger was designed using the most efficient and dependable heat transfer materials available today. The low-mass, gasketless primary heat exchanger has solid cast iron headers and finned copper (or optional cupronickel) tubing for superior heat transfer, resistance to scaling and protection against thermal shock.

The benefits don’t stop there. The condensing secondary heat exchanger is constructed from solid stainless steel and is designed to operate at the boiler’s full flow rate. The unit operates in full condensing mode at all times, while a state-of-the-art temperature mixing system protects the boiler’s primary heat exchanger. In addition, this design also offers a larger heat transfer surface area – more so than any competitive product currently available. Simply put, there is no better way to protect your investment.

Ideal for commercial boiler applications with low operating, return or make-up water temperatures, the Fusion XLF is capable of reaching efficiencies as high as 99% at full input. With full modulation up to 5:1, the firing system continuously varies the energy input to match the heating load without overfiring and wasting fuel – providing extremely high part-load efficiencies.

The Fusion XLF also features HeatNet 3.0, an intuitive boiler control system that monitors system characteristics and modulates boiler firing rates, maximizing turndown ratios and maintaining peak efficiency, regardless of the load.

The Futera XLF features integral HeatNet 3.0 boiler control software that is a boiler management system, capable of networking up to sixteen units without requiring any external boiler control panel. With such advanced performance in a small space, even older boiler systems can benefit from the addition of contemporary efficiency for existing heating or domestic hot water systems. For new construction, the Futera XLF provides a modular configuration with an output unmatched by today’s market.

Features and Benefits:

• 88% Maximum Efficiency
• 500-1,999 MBH
• Full Modulation with 4:1 Turndown
• Cast Iron Headers (Boilers)
• Bronze Headers (Water Heaters)
• HeatNet 3.0 Integrated Boiler Management System
• Copper Finned Tube Heat Exchanger
• Symmetrically Air/Fueled Coupled
• Gasketless Heat Exchanger Assembly
• Modbus Protocol for BMS Communications
• Stainless Steel Jacket Panels

The Futera II’s compact, low maintenance boiler and venting flexibility permit easy boiler installation and service, making it the ideal non-condensing, gas-fired boiler and hot water heater for any hot water supply application. Futera II units have the ability to use room air for combustion and are also capable of drawing in air from the outside for sealed combustion. Units can be set up to vent vertically as Category I appliances or horizontally as Category III through a sidewall, making the Futera II ideal for buildings without chimneys, where roof penetrations cannot exist or on electric-to-gas conversions.

With efficiencies nearing 85.1%, the Dominator has one of the highest efficiency levels available in non-condensing boiler and water heater market. Capable of operating using mechanical room air for combustion or by drawing outside air directly as a sealed combustion product, the Dominator can vent combustion gases vertically or horizontally with factory equipped draft-inducer kits.

In commercial boiler applications where mechanical space is limited, the Dominator’s stackable frame option allows units to be stacked two-high, adding valuable BTUs while keeping the footprint to the size of a single unit. In addition, the Dominator provides up to four stages of firing, allowing the boiler to match the heating load more closely.

And with built-in serviceability features, including a slide out heat exchanger, contractors no longer need to remove the heat exchanger for service or repair, which, when coupled with high efficiencies, makes the Dominator a cost-saving option for any boiler application.

At the heart of the unit is a sealed combustion chamber that provides the flexibility of using either outside air or mechanical room air for combustion. Providing better performance while being priced in line with atmospheric boilers on the market, the LCD features smaller vent sizes, resulting in lower boiler installation and operation costs.

The LCD features a robust, compact design that is constructed with high-quality materials, which, when paired with a proven pilot ignition system and a wide variety of venting options, makes this unit one of the most dependable non-condensing boilers in the commercial boiler market.

A unique feature within this MBH range, the Spectrum Series’ diagnostic control panel allows for easy troubleshooting, and, when coupled with the self-diagnostic light package, makes the Spectrum Series easy to assess, maintain and service. All Spectrum Series non-condensing, gas-fired boilers and hot water heaters are constructed using cast iron headers for application flexibility, and feature built-in draft diverters to lower the height of the unit and, most importantly, to reduce installation costs.

By continuously monitoring several system characteristics, HeatNet 3.0 modulates boiler-firing rates to maximize turndown ratios and maintain peak efficiency – no matter the load.

HeatNet 3.0 doesn’t just benefit stand-alone RBI & KN Series boilers; it is a valuable and cost-saving tool in operating a multi-boiler Master/Member network of up to 16 boilers. By functioning as a boiler management system, HeatNet 3.0 can incorporate a mixture of condensing boilers and non-condensing boilers to eliminate costly third-party, wall-mounted boiler control platforms.