air in pipe after pump
Posted: Fri Apr 18, 2008 2:30 pm
by jim barlow
I have cleaned and flushed system but on refilling I cannot get a flow to the radiators, the hot water system is fine, I have fitted anew pump and zone valve all points have been bled but I cannot get a flow to the radiators. Please HELP. Jim Barlow
Posted: Fri Apr 18, 2008 8:14 pm
by htg engineer
Vented all air from pump vent ? turned pump speed to maximum ?
Are you sure the zon valve or three port valve ? fitted correctly and working ?
room stat calling for heat ?
Select hot water, remove actuator and trun the valve manually - if the radiators heat it's the actuator at fault.