GRUNDFOS - HOT WATER RECIRCULATION SYSTEMS ALPHA 15-55 HWR-T 115 Bronze, union 3/4" iso valve, check valve, wireless aquastat, programmable digital timer and half union set - 99906545

The Grundfos ALPHA 15-55 HWR-T (MPN 99906545) is a premium smart domestic hot water recirculation system engineered for homes with a dedicated hot water return line. Featuring a high-efficiency ECM motor, integrated programmable digital timer, wireless aquastat (temperature sensor), built-in check valve, and 3/4-inch bronze union isolation valve set, this advanced circulator delivers instant hot water while minimizing energy consumption and water waste. Bluetooth connectivity through the Grundfos GO app enables easy scheduling, monitoring, and system configuration. With its stainless steel pump housing and intelligent temperature-based operation, the ALPHA HWR-T offers reliable, quiet performance for modern residential potable water recirculation systems.

Cross References

• Grundfos — 99906545
• Grundfos — ALPHA 15-55 HWR-T
• Grundfos — 99586127 (Wireless Temperature Sensor Service Replacement)

Usage

The Grundfos ALPHA 15-55 HWR-T is installed on domestic hot water systems equipped with a dedicated return line. The wireless aquastat continuously monitors water temperature and communicates with the pump to circulate hot water only when required. The integrated programmable digital timer allows users to create customized operating schedules, while Bluetooth connectivity enables setup and monitoring through the Grundfos GO app. The included 3/4-inch bronze isolation valve and check valve simplify installation and servicing, making this system ideal for premium residential hot water recirculation applications.