Thanks for the replies, we now have water pumping around the system. To do this I connected a mains supply by the cylinder and back-filled the system, then once started up I bled a lot of air out of the pump (previously had been some air in pump but bleeding did not help).
There does sound...
Also I have a manual valve to bleed air from next to the cylinder - is an automatic vent valve required if the cylinder is the high point on the heating circuit?
Ah, I have flow on bottom of cylinder :oops:
Will switch them round this afternoon, see if that helps.. I have blown through the cylinder when dry and it was clear.
Pete
Ok pump is working fine and valves are open. And I have now fitted means to bleed the air at the cylinder return (which is the highest points save the F&E tank.
Still hot water gets to the cylinder but no further, so this also indicate pump is working but something is preventing flow all the...
Hello,
I have just moved my cylinder up to the loft and raised the tanks which were in there up above it. The system is a vented, fully pumped, indirect one.
With only the cylinder loop connected to the boiler (no rads hooked up yet) the flow gets very hot right up to the cylinder coil...