Heating Return Pipe hot and Radiator hot whenever Boiler pump runs

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Heating Return Pipe hot and Radiator hot whenever Boiler pump runs

Post  PJHB on Mon May 14, 2012 10:16 am

Hi

One or more of my radiators is coming on whenever the Boiler Pump runs ie when the store is being heated. The Heating pump definitely isn't going I've checked, even tried disconnecting it temporarily.

I'm suspecting the NRV Check valve on the Heating pump as it should stop this happening yes?

Any help appreciated.

Pete

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Re: Heating Return Pipe hot and Radiator hot whenever Boiler pump runs

Post  MK Group Ltd on Tue May 15, 2012 3:14 pm

Hi Pete,

It could be the NRV or it could also be the bypass valve letting-by.

Hope this helps

Regards

Gary
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