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Underfloor heating with a heartbeat
Was now looking for replacement pump and trying to decide if grundfos alpha2 15/60 130 was an adequate replacement for a alpha+ 25/60 130. Best summary here - Yes - http://www.ukplumbersforums.co.uk/central-heating-forum/43783-grundfos-alpha-25-60-pump-replacement-3.html Questions - 1...- OliB
- Post #6
- Forum: Plumbing and Central Heating
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Underfloor heating with a heartbeat
Seem to have found an answer here: http://www.amazon.co.uk/noise-grundfos-pumps-surging-sound/forum/Fx1ILT3O2QOHNHO/Tx3SIB9RULN34U3/1?_encoding=UTF8&asin=0954601300- OliB
- Post #4
- Forum: Plumbing and Central Heating
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Underfloor heating with a heartbeat
Read the first paragraph now :!: Not sure what to make of it really!- OliB
- Post #3
- Forum: Plumbing and Central Heating
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Underfloor heating with a heartbeat
When any of the 4 zones in my underfloor heating are on the pump sounds like a heartbeat... woosh ..woosh ...woosh about once a second. The LED on the Grundfos Alpha pump pluses slightly and the flowmeters bounce. The same thing happens with any of the zones. The system is 6 years old...- OliB
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- Replies: 5
- Forum: Plumbing and Central Heating
