DIY Doctor

air in pipe after pump

Postby jim barlow » Fri Apr 18, 2008 1:30 pm

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
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Simply Build It

Postby htg engineer » Fri Apr 18, 2008 7:14 pm

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.
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