"Tony" wrote in message
...
Tried everything that I can think of.
If I turn off all the rads and then turn one of the upstairs rads on
it will heat up OK but if I try to increase the number turned on the
the heat is greatly reduced and infact only a few rads get the heat at
all, I know it at first seems like a balancing job, but surely an
Ideal mexico super 3 60000btu boile can deal with a few rads
upstairs..

I live in a 1965 4 bed detached house with 4 doownstairs rads and 6
upstairs rads. open system CH. Measuring the pipe temps on the
furthest rad ( single) when turned on by itself gave a reading of
inflow=125F , out flow=101Fr both valves set fully opened.

Is it possible to add a 2nd pump to the system to boost the water
circulation speed is necessary..


IF you are happy that you can balance the system then the problem may lie in
the pump or a wide open bypass robbing the radiators of flow