Open vent heating system - Vent discharge

[Timmy D]

Got to look at a system which is discharging out of the open vent.

Any tips, hints?

Gonna check f&e/pump connection locations.
Pump speed.
System water quality for indication of blockage.
Worth cutting out the feed tee to check for blockage?

Any others?

 

[exedon2]

Assuming someone has not stuck in a 7mt pump running flat out check
pipework layoutI
If its pumping over and water going straight back in system probably cold feed clear.

 

[Timmy D]

Assuming someone has not stuck in a 7mt pump running flat out check
pipework layoutI
If its pumping over and water going straight back in system probably cold feed clear.

Been told there’s water coming out the overflow each morning on start up.

 

[Ben-gee]

Try the simple, ball valve not shutting off properly/ soon enough in f&e?