Hi all,I have a central heating system with a pump that's started making a loud vibration noise every so often,the pump speed was on 2 and iv turned it up to 3 .in doing that the pump still makes the noise from time to time ,but the heating is alot warmer.I'm thinking I will need to change the pump ,but on looking at new pump I can't seem to get the same model?.is there a compatible pump for the old one on there.It's a Grundfos mk11 type ups 15-50x18 model no u544.240 v. 50hz. 2.5 Hf. Class f.And that's all the information on the side of the pump.Hope someone can help .Thanks for reading.
- Thread starter Lee Hutton
- Start date
Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws
The new pumps are now 'energy efficient'. You can find your replacement here: http://uk.grundfos.com/products/fin...d/file/file.res/ALPHA2 Sales Leaflet 0413.pdf
Love those 2 words, NOT lol . What a nightmare these 'energy efficient ' lol pumps are turning out to be !!!
Please Mr Stafford , sort us out some of the old ones
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