NIBE Circulation Pump Grundfos- 624471 Circulation Pump: 1 Exchange Gasket: 2 Cable External: 1 This pump replaces the Grundfos UPS 15-60 pumps from Grundfos as standard available in NIBE heat pumps. The difference is that you cannot manually set the speed, instead it has PWM and if you have a pump that does not have intelligent control, the pump will run on max. This is the pump that NIBE has developed as a replacement for the 15-60 pump. It is no longer possible to get hold of 15-60 pumps due to energy saving demands from the EU. If you have an equipment that requires you to change the speed, the 15-60 pump can be replaced with an Alpha 2 pump from Grundfos with article number: 5731803. This article is meant to be used for heat pumps from NIBE manufactured from 2009 - until further notice. If your NIBE pump is older than 2009 you should have the circulation pump with article number: 624455. Compatible with models below: NIBE F310P NIBE F315P NIBE F360P NIBE F410P Unsure if this product is for you? Get in touch as we are happy to help.