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https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl DIY Forum >> Plumbing Questions >> CH pump speed https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl?num=1324030090 Message started by Natedog on Dec 16^th, 2011, 10:08am

Title: CH pump speed
Post by Natedog on Dec 16^th, 2011, 10:08am

Our central heating has a grundfoss 3 speed pump. How do you decide the right speed to set it to?

Title: Re: CH pump speed
Post by thescruff on Dec 16^th, 2011, 11:31am

Load and pipe sizes.

Make and model of the boiler could also dictate the speed, otherwise low as it will go and the radiators still work.