GRUNDFOS - ALPHA2 - CAST IRON ALPHA2 26-99 F w/terminal box 115 Variable speed, Flanged, Terminal Box - 99490916

The Grundfos ALPHA2 26-99 F (MPN 99490916) is a premium high-efficiency ECM variable-speed circulator engineered for residential and light commercial closed-loop hydronic heating and cooling systems. Featuring Grundfos AUTOADAPT technology, the pump continuously monitors system demand and automatically adjusts speed to deliver optimum comfort while minimizing energy consumption. Its electrocoated cast iron flanged housing, magnetite-resistant hydraulic design, integrated check valve, ceramic shaft, and maintenance-free wet-rotor construction provide reliable, quiet operation. The hardwired terminal box allows permanent conduit installation, making it ideal for boilers, radiant heating, fan coil systems, geothermal applications, and primary-secondary piping.

Cross References

• Grundfos: 99490916 (Current model)
• Grundfos Legacy Equivalent: UPS 26-99F
• Taco Equivalent: 0011-F4
• Bell & Gossett Equivalent: VR3452

Usage

The Grundfos ALPHA2 26-99 F is designed to circulate water in closed-loop hydronic heating and cooling systems. It is commonly used in residential and light-commercial boiler systems, radiant floor heating, baseboard heating, panel radiators, fan coil units, geothermal systems, and primary-secondary piping. The pump automatically adjusts its speed using AUTOADAPT technology to match system demand, improving comfort while reducing energy consumption. The cast iron housing is intended for closed-loop applications and is not suitable for potable domestic hot water systems.