Worcester Bosch Greenstar 8000 System Boiler Issues

[John Carroll]

1 hour ago, SimonD said:

 

I think it's worth testing pump setting 0 to see what happens. Who knows, it may not work at all but if it were me, I'd like to see variation in flow rate proportional to burner and DT and then see what happens through the system. 

 

It was, on this very boiler, but in another Site/Thread, "Bypass Valve" in DIYnot.com, the pump speed fell to 30% which by my calcs meant a flowrate of 6.3LPM at a head of only 0.35M, shared through 11 Type22 & 4 Triple rads.

This was before the boiler HEX was changed, so yes, would be interesting to see a full set of data if tried again.

Edited 5 hours ago by John Carroll