Grundfos 59896343 Pump

The Grundfos 59896343, also known as the UPS15-58FRC, is a high-efficiency 3-speed circulator pump designed for technical precision in closed-loop hydronic heating systems. Featuring a 1/25 HP wet-rotor motor, this unit operates at 115V and utilizes a durable cast iron housing. The "FRC" designation signifies a rotated flange configuration and an integrated check valve (IFC), allowing for seamless installation in tight mechanical rooms where standard vertical flange orientations may cause clearance issues. By utilizing its three-speed motor technology, contractors can field-adjust the pump to match specific system head requirements, effectively replacing multiple single-speed competitive models. With a maximum flow rate of 17.2 GPM and a max head of 19.3 feet, this Super Brute series pump is a staple for radiant floor heating, baseboard, and fan coil applications. Its canned rotor design ensures nearly silent operation and eliminates the need for mechanical shaft seals, reducing potential leak points in the loop.

• Universal Replacement: Specifically engineered to replace up to 12 different competitive models, reducing the need for extensive truck stock.
• Rotated Flange Design: The 90-degree rotated housing provides installation flexibility in compact boiler manifolds and retrofit scenarios.
• Variable Speed Control: Three distinct motor settings allow for fine-tuning the pump curve to optimize energy consumption and system flow.
• Removable Check Valve: The built-in IFC prevents backflow and can be easily removed for maintenance or when external check valves are preferred.
• Resilient Construction: Built with a ceramic shaft, carbon axial bearings, and a PES composite impeller for long-term performance in treated water systems.

Can the UPS15-58FRC be used for domestic potable water?
No, this model features a cast iron body intended for closed-loop heating. For open-loop or potable water systems, a stainless steel or bronze version is required to prevent corrosion.

What is the benefit of the rotated flange?
The rotated flange (RFC) allows the pump to mount onto horizontal or vertical piping while maintaining the motor shaft in the necessary horizontal position, avoiding air pocket accumulation and bearing wear.

Does this pump include gaskets?
Yes, the unit is typically supplied with two flange gaskets (O-rings) required for a standard 2-bolt flange connection.

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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.