Hello everyone,
I have a problem, to which there is probably a simple solution but I can't see the wood for the trees.
I swapped out an old Grundfos pump for the new one. Gone is the lovely old silver button on the front where you can bleed the pump and now we have more bells and whistles. But that's OK because the government says they are more energy-efficient and the homeowner (and polar bears) are looking forward to the amazing energy savings they are going to make!
Anyhow, the entire blood house is vibrating. You can hear the pipes vibrating, the rads vibrating and anything touching the pipes vibrating. The homeowners say its worse when the system is warming up but it can happen randomly when the system is running. The entire household is woken up by this in the morning. FML
The system is open vent and all rad valves are bi-directional (TRV4's). It's an old system and boiler and was powerflushed about 5 years ago.
This problem did not happen before. The pump, however, is not very well supported with clips etc and the additional pipework around the cylinder is also not very well clipped in
My first response was to turn down the pump but then the boiler thermal cut out gets involved and ruins the party. The homeowners cannot reduce the heat output of the boiler because otherwise, the property does not heat up.
I guess the best option would be to add a boat load of pipe clips and possible re-route some pipework but this is a lot of money (and time) the homeowner does not want to spend. After all, it was only a simple pump swap.
My second plan is to swap the Grundfos for something else. Maybe the weird harmonics will be different with a different manufacturer.
Anyone else got a better idea, please?
Many thanks,
J
I have a problem, to which there is probably a simple solution but I can't see the wood for the trees.
I swapped out an old Grundfos pump for the new one. Gone is the lovely old silver button on the front where you can bleed the pump and now we have more bells and whistles. But that's OK because the government says they are more energy-efficient and the homeowner (and polar bears) are looking forward to the amazing energy savings they are going to make!
Anyhow, the entire blood house is vibrating. You can hear the pipes vibrating, the rads vibrating and anything touching the pipes vibrating. The homeowners say its worse when the system is warming up but it can happen randomly when the system is running. The entire household is woken up by this in the morning. FML
The system is open vent and all rad valves are bi-directional (TRV4's). It's an old system and boiler and was powerflushed about 5 years ago.
This problem did not happen before. The pump, however, is not very well supported with clips etc and the additional pipework around the cylinder is also not very well clipped in
My first response was to turn down the pump but then the boiler thermal cut out gets involved and ruins the party. The homeowners cannot reduce the heat output of the boiler because otherwise, the property does not heat up.
I guess the best option would be to add a boat load of pipe clips and possible re-route some pipework but this is a lot of money (and time) the homeowner does not want to spend. After all, it was only a simple pump swap.
My second plan is to swap the Grundfos for something else. Maybe the weird harmonics will be different with a different manufacturer.
Anyone else got a better idea, please?
Many thanks,
J