Grundfos 99452454 Pump

The Grundfos 99452454, model UP15-10B5/TLC, is a single-speed bronze circulator pump engineered for peak efficiency in domestic hot water recirculation and open-loop heating systems. Designed for 115V operation, this 1/25 HP pump features a 1/2" sweat connection and an integrated digital timer with battery backup, allowing contractors to optimize system runtime based on specific demand patterns. The canned rotor design ensures the bearings are lubricated by the pumped liquid, resulting in whisper-quiet operation and high reliability in residential environments.

Built for durability, the Grundfos UP15-10B5/TLC incorporates a corrosion-resistant impeller, a ceramic shaft, and carbon radial bearings to withstand the oxidative nature of potable water. With a maximum flow rate of 8.37 GPM and a max head of 6.23 feet, this circulator is an ideal solution for instant hot water delivery without the need for complex wiring, thanks to the pre-installed 6-foot line cord. Its maintenance-free construction and 145 PSI pressure rating make it a preferred choice for professional HVAC and plumbing installations where performance and longevity are non-negotiable.

• Corrosion-Resistant Bronze Housing: Specifically designed for open-loop systems and potable water applications to prevent oxidation.
• Integrated Digital Timer: Features a 24-hour programmable cycle with battery backup for enhanced energy efficiency and scheduling.
• Canned Rotor Technology: Eliminates the need for a shaft seal, ensuring leak-free performance and minimizing noise levels during operation.
• Simplified Installation: Includes a factory-installed 6-foot power cord and 1/2" sweat ports for rapid integration into existing plumbing.
• High Temperature Tolerance: Rated for liquid temperatures ranging from 36°F to 150.8°F, suitable for diverse hydronic and domestic water needs.

What is the difference between the B and N housing models?
The "B" in the 99452454 model stands for Bronze, which is the industry standard for potable water to prevent corrosion. The "N" models feature stainless steel housings, which serve a similar purpose but vary in material preference for certain regional codes.

Can I install this pump horizontally?
Yes, but ensure the motor shaft is in a horizontal position. The terminal box should not be located below the pump to prevent moisture accumulation. Check the technical manual for specific orientation restrictions.

Is the digital timer compatible with manual overrides?
Yes, the integrated digital timer allows for manual on/off settings or programmed intervals, providing flexibility for the end-user without requiring additional external controls.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.