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back boiler?

radiater emptys afer bleeding it and filling it the other rads are fine the nearest one to it needed bleeding slightly it is a back boiler
neil, October 2010
Poor system configuration, the system is 'pulling in air' with the pump running.
Needs re-configuring to a close coupled set up ie: Cold feed and open vent as close as possible to each other on the same pipe.

Carefree, October 2010