I found clues that our central heating might need flushing the other
day, so I have put half a litre of SM4 into the header tank. The system
is a standard boiler with fully pumped indirect hot water. The rads are
operated by a shut off valve tied to a room stat.
My problem is...
After having a new boiler fitted about 2 or 3 years ago, I now find that
the heating drain point is at about 5 foot from floor level. It was
previously a couple of inches above the floor when I had my old boiler.
How do I drain the whole system down? Local plumber recommended a BG
power flush . No! I am not going down that path.
I am going to replace all the ground floor rads next spring / summer.
All the ones upstairs are less than 6 or 7 years old, the downstairs
ones date back to 1978.
- posted 12 years ago