they all get hot but we have a problem with getting the radiators hot to the downstairs. We have twelve radiators to run, will chnge the pump as it sounds likely this is the problem will a 15/50 be adequate or do we need a bigger pump
my heating recently stopped working. although the timer came on in the morning and the pump started ,the boiler did not fire but the pilot light was on. We flushed the system out a few times and put some stuff in to flush out the sludge. it worked ok for that evening but the next day the...