I have a 4 year old combi system installed with fairly long 22mm pipe runs feeding several very large double radiators. The BTUs of the rads and pipework are within the rating of the boiler.
No matter how carefully I try and balance the system, I can’t get it right. I can get all the rads to get quite warm (at the same time) – but not all to get 'scorching' hot (at the same time) If I open up a valve on any rad(even a fraction) I find one of the other rads does not heat at all.
I know this sounds strange, but could this be because there is too much water in the system for the pump to cope with?
Would adding a second pump (next to the first, or at a distance from it) help?
Any suggestions greatly appreciated.
Andy
No matter how carefully I try and balance the system, I can’t get it right. I can get all the rads to get quite warm (at the same time) – but not all to get 'scorching' hot (at the same time) If I open up a valve on any rad(even a fraction) I find one of the other rads does not heat at all.
I know this sounds strange, but could this be because there is too much water in the system for the pump to cope with?
Would adding a second pump (next to the first, or at a distance from it) help?
Any suggestions greatly appreciated.
Andy