Grundfos - Comfort PM AutoAdapt Recirculation Pump Sweat, 1/2-Inch - 115/230 v 50/60 Hz - 10-16 A PM B5/LC- 98420224

The Grundfos COMFORT PM AUTOADAPT Recirculation Pump (MPN 98420224) is a premium high-efficiency domestic hot water recirculation pump designed to provide instant hot water while significantly reducing water waste and energy consumption. Powered by a permanent magnet ECM motor, the COMFORT PM features Grundfos AUTOADAPT technology, which learns household hot water usage patterns and automatically adjusts operation for maximum efficiency. The lead-free brass pump housing is approved for potable water applications, while the integrated check valve and isolation valve simplify installation and maintenance. Operating on dual-voltage 115/230V power, this compact circulator is ideal for residential water heater recirculation systems with dedicated return lines.

Cross References

• Grundfos — 98420224
• Grundfos — COMFORT 10-16 A PM B5/LC
• Grundfos — UP10-16 A PM BU/LC (model designation used in some catalogs)

Usage

The Grundfos COMFORT PM AUTOADAPT pump is installed on domestic hot water recirculation systems with a dedicated return line to provide near-instant hot water at fixtures while minimizing water waste. The AUTOADAPT function continuously learns the household's hot water consumption habits and automatically operates only when needed, reducing heat loss and electrical consumption. The pump also offers selectable temperature control and continuous operation modes for greater installation flexibility. It is commonly used with tank water heaters, solar water heaters, and heat pump water heaters in residential applications.