P
peterpiper
Have seen others posting about Ecocirc quietness.
When I recently installed an Ecocirc 25/6 -130, as a solar HW circulator, there was an immediate high pitch whine noise that sounds very similar to water pipe squeal.
This resonance carries through the whole house, even to rooms nowhere near the solar pipework. And my ears aren't too good at high frequencies nowadays.
The pump is on a vertical pipe run, flow going up, set to speed 1. The pump is circulating fine.
Initially whenever the pump started or stopped there was a momentary squeal, for about half a second, the continuous whine was only occasional and just audible.
I had hoped it would settle down, but 3 days later the continuous noise is louder and more frequent.
At pump speed 3 or above the noise becomes less, it is then a a kind of fluttering squeal. (But not much point getting an A rated pump then running it at higher speed than needed).
I can't find anyone else reporting squeal, so I guess it's not common. And as it's always loud when starting or stopping any (youngsters) would have heard it. Maybe people have, but then don't worry if its not continuous??
The e.ay seller lunnsdirect not much help just saying "This pump is not suitable for Solar systems..". That's not what the Lowara literature says!
When I recently installed an Ecocirc 25/6 -130, as a solar HW circulator, there was an immediate high pitch whine noise that sounds very similar to water pipe squeal.
This resonance carries through the whole house, even to rooms nowhere near the solar pipework. And my ears aren't too good at high frequencies nowadays.
The pump is on a vertical pipe run, flow going up, set to speed 1. The pump is circulating fine.
Initially whenever the pump started or stopped there was a momentary squeal, for about half a second, the continuous whine was only occasional and just audible.
I had hoped it would settle down, but 3 days later the continuous noise is louder and more frequent.
At pump speed 3 or above the noise becomes less, it is then a a kind of fluttering squeal. (But not much point getting an A rated pump then running it at higher speed than needed).
I can't find anyone else reporting squeal, so I guess it's not common. And as it's always loud when starting or stopping any (youngsters) would have heard it. Maybe people have, but then don't worry if its not continuous??
The e.ay seller lunnsdirect not much help just saying "This pump is not suitable for Solar systems..". That's not what the Lowara literature says!
