the make of pump now is a grundfos , no probs with having to bleed radiators but if i take one off there is black sludge/water in the last bits thanks to all
hi lived in the bungalow 7 years just put my third CH pump in could this be in the wrong place it pulls the hotwater from the boiler and then pumps it to the three way valve so it pumps the hotest water any ideas could i just turn the pump round thanks rob