after posting earlier this week i was told my system (although all rads are hot) is not balanced as all the LSV are open. i followed the balancing procedure to the Nth degree.
the difference between flow and return at the boiler with all valves open and boiler on max is 8 degrees. i let the system cool down and shut all the valves including LSV's. previously i had gone around checking in which order the rads heated up and made a list. i started balancing at rad1 and worked around the system according to the list i made.
i achieved the 8 degrees difference between flow and return on each rad, within half a turn on the LSV's.
the problem i get when it is done this way is that the system is so noisy, i can hear the water flowing through the radiators very loudly. after the system is upto temp, the boiler begins to kettle. i can stop the kettling by opening one LSV wide open, which tells me that with the system balanced, the heat cannot escape the boiler fast enough due to the lock shields being turned down so low. the boiler is only on number 3 of 10, any lower and the HW takes ages to heat up.
what is the problem or what am I doing wrong?
Glow worm space saver mk2
Wilo gold on speed 2
22mm main, 15mm to the upstairs rads and 8mm micro to downstairs.
No TRV's (had to remove them because when they closed down the boiler kettled in the same way)
single rads x8 (4 up 4 down)
system is a C Plan open vent.
the difference between flow and return at the boiler with all valves open and boiler on max is 8 degrees. i let the system cool down and shut all the valves including LSV's. previously i had gone around checking in which order the rads heated up and made a list. i started balancing at rad1 and worked around the system according to the list i made.
i achieved the 8 degrees difference between flow and return on each rad, within half a turn on the LSV's.
the problem i get when it is done this way is that the system is so noisy, i can hear the water flowing through the radiators very loudly. after the system is upto temp, the boiler begins to kettle. i can stop the kettling by opening one LSV wide open, which tells me that with the system balanced, the heat cannot escape the boiler fast enough due to the lock shields being turned down so low. the boiler is only on number 3 of 10, any lower and the HW takes ages to heat up.
what is the problem or what am I doing wrong?
Glow worm space saver mk2
Wilo gold on speed 2
22mm main, 15mm to the upstairs rads and 8mm micro to downstairs.
No TRV's (had to remove them because when they closed down the boiler kettled in the same way)
single rads x8 (4 up 4 down)
system is a C Plan open vent.