Description
Grundfos 59896341 UPS 15-58 FC Circulator Pump
Product Overview
The Grundfos 59896341 UPS 15-58 FC is a dependable three-speed hydronic circulator pump engineered for residential and light commercial heating, cooling, and hot-water recirculation systems. Built with a durable cast-iron housing and a high-efficiency motor, this model provides a balanced combination of quiet operation, strong hydraulic performance, and long service life.
With a maximum flow of 17.2 GPM and up to 19.36 feet of head, the UPS 15-58 FC adapts easily to varying system demands, making it a popular choice for baseboard heating, radiant heating loops, fan coils, and circulation circuits in HVAC installations. The pump includes built-in isolating and non-return valves, delivering faster installation and simplified service access.
Features & Benefits
- Three-speed motor for flexible system balancing and performance control
- Cast-iron pump housing (EN-JL1030 / ASTM 30B) for long-term durability
- Composite PES impeller designed for reliability and reduced wear
- Built-in isolating and non-return valves for easier installation and servicing
- UL and CSA listed for North American compliance
- Handles liquid temperatures from 35.6°F to 230°F
- Quiet operation with internal thermal protection for added safety
- Standard USA oval flange for direct replacement in most hydronic systems
Specifications
Technical Performance
Speed options: 3
Maximum flow: 17.2 US GPM
Maximum head: 19.36 ft
Approvals: UL, CSA
Included valves: Built-in isolating and non-return valves
Materials
Pump housing: Cast iron, EN-JL1030 / ASTM 30B
Impeller: Composite PES
Installation Requirements
Max ambient temperature: 104°F (or 176°F with matching liquid temperature)
Maximum operating pressure: 145.04 psi
Connection type: Cast-iron flange
Flange standard: USA oval, 2-bolt
Pressure rating: PN 10
Port-to-port length: 6.5 in
Liquid Handling
Pumped liquid: Water
Temperature range: 35.6°F – 230°F
Selected rating temperature: 140°F
Liquid density: 61.35 lb/ft³
Electrical Details
Voltage: 115V, single-phase
Frequency: 60 Hz
Max power input: 87 W
Current draw: 0.55A (speed 1), 0.66A (speed 2), 0.75A (speed 3)
Capacitor: 10 μF / 180 V
Poles: 2
Insulation class: F
Motor protection: Internal thermal
General Information
Gross weight: 7.25 lb
Country of origin: United States
HTS code: 8413.70.00.21
Installation Tips
- Flush system piping before installation to prevent debris-related wear.
- Mount the circulator horizontally with the motor shaft level.
- Use USA-standard oval flanges for proper sealing and alignment.
- Adjust speed settings after startup to balance performance and efficiency.
- Verify water temperature and pressure limits before operation.
Frequently Asked Questions
Is the UPS 15-58 FC compatible with radiant heating systems?
Yes. Its three-speed motor allows for precise control in radiant floor loops.
Does this pump include isolation valves?
Yes. Integrated isolating and non-return valves simplify servicing.
Can the pump operate with high-temperature hydronic water?
Yes. It supports liquid temperatures up to 230°F within ambient limits.
Is this pump a good replacement for older UPS 15-58 models?
Yes. It matches port length, flange style, and electrical specifications.
What voltage does the pump require?
The pump operates on standard 115V residential power.
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