M
marsaday
I have a balancing problem and wondered if i could turn up the pump to pump a bit harder. It will be set on std factory setting.
There is no blockage in the system, just that the rads dont get fully hot all the way to the bottom. I have tried to balance it as best i can and can't get a better result. All the rads are new in the last 2yrs.
The boiler is on the attic level, feeds 11 rads and 1 UFH loop. It is a big boiler - vaillant 937 and is approx 35kw.
The system has been power cleaned 3 yrs ago and recenlty i have added a new floor to the house (attic) and so now have 3 new rads up there. Because the boiler is up there i just ran the piping in 15mm for this level. The rest of the house is 22mm.
I know i have one problem spot and that is the flow/return to my bed rad in the attic. they have to go over a steel beam and then back down again so here i have a section of pipe which goes up / across / down. It did it in elbows because i couldnt bend the pipe to give smooth corners. This rad needs about 2 1/2 turns to come on where as the other 2 rads only need a 1/4 turn as the boiler is so close. So i know this rad is pinching some flow from the rest of the house, but i would have thought it wouldnt distort the rest of the system that much.
I haven't tried shutting this rad down yet, but i might try.
Do you think upping the pump power will do the trick ?
There is no blockage in the system, just that the rads dont get fully hot all the way to the bottom. I have tried to balance it as best i can and can't get a better result. All the rads are new in the last 2yrs.
The boiler is on the attic level, feeds 11 rads and 1 UFH loop. It is a big boiler - vaillant 937 and is approx 35kw.
The system has been power cleaned 3 yrs ago and recenlty i have added a new floor to the house (attic) and so now have 3 new rads up there. Because the boiler is up there i just ran the piping in 15mm for this level. The rest of the house is 22mm.
I know i have one problem spot and that is the flow/return to my bed rad in the attic. they have to go over a steel beam and then back down again so here i have a section of pipe which goes up / across / down. It did it in elbows because i couldnt bend the pipe to give smooth corners. This rad needs about 2 1/2 turns to come on where as the other 2 rads only need a 1/4 turn as the boiler is so close. So i know this rad is pinching some flow from the rest of the house, but i would have thought it wouldnt distort the rest of the system that much.
I haven't tried shutting this rad down yet, but i might try.
Do you think upping the pump power will do the trick ?