U
Unregistered
Bad day today.
I've been to a job on a vented heating system with no heat (poor flow) in downstairs rads, well all over really.
I bled a little air from manual vent, checked the 3-port was motoring, roughly balanced lockshields and checked pump was spinning.
no luck
I isolated all but one rad and still no/very little flow in some areas.
Removed pump and checked/cleaned veins on impeller and checked F&E tank.
no luck
I tried flushing flow and return through individual rads (with and without vent capped)
no luck
I can flush to hot both ways water is clean and flow open ended is reasonable (10mm) but when I reconnect and run theres no flow.
Ive shut bypass and can feel heat traveling up pipes at a reasonable rate but must be poor flow due to blockage (air or debury)
Cant think what else to do short of stripping off 3-port to check ports free and temporarily 'pressurising' system to flush with mains pressure.
Am I missing a trick?
I've been to a job on a vented heating system with no heat (poor flow) in downstairs rads, well all over really.
I bled a little air from manual vent, checked the 3-port was motoring, roughly balanced lockshields and checked pump was spinning.
no luck
I isolated all but one rad and still no/very little flow in some areas.
Removed pump and checked/cleaned veins on impeller and checked F&E tank.
no luck
I tried flushing flow and return through individual rads (with and without vent capped)
no luck
I can flush to hot both ways water is clean and flow open ended is reasonable (10mm) but when I reconnect and run theres no flow.
Ive shut bypass and can feel heat traveling up pipes at a reasonable rate but must be poor flow due to blockage (air or debury)
Cant think what else to do short of stripping off 3-port to check ports free and temporarily 'pressurising' system to flush with mains pressure.
Am I missing a trick?
