In message op.v5zn4fz1ytk5n5@i7-940, Lieutenant Scott
wrote
http://diydata.com/projects/centralh..._balancing.php

Why? Surely if your boiler is powerful enough you don't need to mess
around like this. If your boiler can't heat all the radiators at once,
your boiler is too small for the system. Even with all my radiators on
full blast, the boiler doesn't run continuously.



Water takes the path of least resistance. If you left all the valves to
your radiators fully open the pipe work to one radiator would provide
the path of least resistance and the majority of the water would only
flow through that one radiator. Some radiators would get so little water
flow they wouldn't heat up, irrespective of the boiler rating.

If you want to see this for yourself just open the lock-shield valves on
the radiators nearest to your boiler in your system and see if all the
radiators now get heated satisfactory.
--
Alan
news2009 {at} admac {dot} myzen {dot} co {dot} uk