"mr j" wrote in message
oups.com...
Ive just rang her and she's topped it up using the filling loop. It was
nearly on empty. Tomorow I shall bleed her rads for her. Is it positive
that I bleed with the pump pumping water round the rads? mr J


It won't matter that thermostatic valves may be closed as water will pass up
the other pipe to displace the air. As it is a closed system the pressure
head is the same at both ends of the radiator.

Remember to check the pressure after bleeding.


John