Grundfos - Comfort PM AutoAdapt Recirculation Pump Sweat, 1/2-Inch - 115/230 v 50/60 Hz - 10-16 A PM B5/LC- 98420222

The Grundfos COMFORT 10-16 A PM B5/LC (MPN 98420222) is a high-efficiency domestic hot water recirculation pump designed for residential systems with a dedicated return line. Its intelligent AUTOADAPT control learns household hot water usage patterns and operates the circulator only when demand is expected, helping reduce water waste, heat loss, and electrical consumption. The lead-free bronze drinking-water housing, 1/2 in sweat connections, permanent-magnet motor, and compact wet-rotor construction provide quiet, dependable operation. Selectable AUTOADAPT, temperature-control, and continuous modes make this pump suitable for energy-efficient residential hot water recirculation installations.

Cross References

• Grundfos — 98420222: COMFORT 10-16 A PM B5/LC, 1/2 in sweat AUTOADAPT model
• Grundfos — UP10-16 A PM B5/LC: Alternate model designation used in catalogs
• Grundfos — 98420224: Related AUTOADAPT model with 1-1/4 in NPSM union connections; not a direct connection-for-connection replacement

Usage

The Grundfos 98420222 is installed in a residential domestic hot water recirculation loop with dedicated return piping. It circulates cooled water from the return line back to the water heater so hot water reaches faucets more quickly. AUTOADAPT monitors usage patterns and schedules operation around periods of normal demand. Temperature-control mode cycles the pump according to water temperature, while continuous mode provides constant circulation when required. The 1/2 in sweat connections are soldered directly into copper piping, making the unit suitable for compact residential mechanical-room and water-heater installations.