Designed for variable primary flow systems, Fulton’s ENDURA+ firetube condensing boilers represent a PURE Optimized revolution in firetube condensing boiler technology. Whereas conventional boiler designs transfer stresses directly onto the most critical components, Fulton’s patent-pending stress reliever completely eliminates these stresses and significantly increases boiler longevity. ENDURA+ provides industry-leading performance without sacrificing durability.
Category: Commercial Hydronic Boiler
Rated 4.5/5 based on 11 customer reviews
Fulton’s ENDURA+ efficiently captures up to 99% of the fuel’s energy while intelligently directing water through engineered flow paths.
PURE Optimized to fit an ultra-compact footprint, the ENDURA+ surpasses the reliability of existing boiler designs and is easier to install and service.
Built with Duplex stainless steel, the ENDURA+ heat exchanger features higher strength, increased resistance to corrosion, and superior thermal strain management. Shown on the left, Finite Element Analysis (FEA) reveals the stark contrast in operating stresses between competing equipment and Fulton’s patent-pending design.
Conventional designs sacrifice material integrity and durability by transferring the stresses of operation directly onto the tubesheet and heat exchanger tubes. The ENDURA+ eliminates longitudinal thermal expansion stress by absorbing thermal growth externally as the heat exchanger freely expands.
Engineered by Fulton for the ENDURA+, the 7-inch touchscreen control maximizes performance and facilitates commissioning. It efficiently sequences up to 10 boilers and eliminates the need for a master boiler or standalone panel. If a boiler is powered off, the cascade seamlessly transitions to the next available stage with zero downtime.
Fulton’s combustion technology features turndowns up to 15:1 with high-precision servo motor control, outperforming all conventional platforms. O2 Compensation tunes the fuel/air ratio in realtime, boosting efficiency across all modulation rates and automatically adjusting for seasonality.
ENDURA+ boilers are designed for the simplified piping method of variable primary flow. This enhances temperature control, reduces design complexity, and maximizes condensing boiler efficiencies by delivering the lowest temperature water directly to the boiler rather than blending with heated water in a primary-secondary manifold.