Hi chaps
I've a fairly simple but oild system, Grundfos Selectric pump, potterton boiler in a single-floor flat with 6 rads - single flow pipe from pump feeds to 1 rad then splits two ways to feed 2 and 3 in the rest of the flat.
The boiler comes on ok and the pump seems to be running (light vibration from the body, and selecting different flow rates at the pump change the running sound) but the rads aren't heating up.
The flow pipe out of the pump is very hot, the flow pipe out of the valve is just as hot, then the flow pipe runs up the wall and the further you go along this pipe the less hot it is. I've bled all the rads but still no dice.
Any clues please?
Thanx
Malc
I've a fairly simple but oild system, Grundfos Selectric pump, potterton boiler in a single-floor flat with 6 rads - single flow pipe from pump feeds to 1 rad then splits two ways to feed 2 and 3 in the rest of the flat.
The boiler comes on ok and the pump seems to be running (light vibration from the body, and selecting different flow rates at the pump change the running sound) but the rads aren't heating up.
The flow pipe out of the pump is very hot, the flow pipe out of the valve is just as hot, then the flow pipe runs up the wall and the further you go along this pipe the less hot it is. I've bled all the rads but still no dice.
Any clues please?
Thanx
Malc
