Grundfos Circulator Pump MAGNA1 40-60 F 99221292

The Grundfos MAGNA1 40-60 F is a single-head variable speed circulator pump built for basic performance duties in heating and cooling systems. It moves water around the circuit and provides basic system control and monitoring, with a fault relay and digital start/stop for external communication. The pump housing is cast iron with a composite impeller, and the motor is supplied as part of the assembly.

• The pump runs but the circuit stays cold, or radiators heat unevenly despite the pump being powered.
• Grinding, humming or rattling noise from the pump body that does not clear after venting.
• The pump fails to start on a call for heat, or stops and restarts intermittently.
• Water weeping from the pump housing, flange joint or motor area.
• The fault relay signals a fault, or the digital start/stop input no longer responds.

• Confirm the existing pump is a MAGNA1 40-60 F and match the part number 99221292 before ordering.
• Check the connection size and port-to-port length against the pipework: DN 40 DIN with 220 mm between ports.
• Note the alternative and previous part numbers listed below, as these may appear on older labels or documentation.
• Check whether the flange gaskets and bolts on the existing installation are reusable before fitting the replacement.