Hi any advice is much appreciated. I have a Baxi 105 HE boiler and will shortly be needing to drain the central heating system down to reposition a few rad's as my kitchen is being extended. Ive taken a chance before and drained the system down and re filled on my own without problems before but, my questions are:
How do I know if I have a vented or unvented system?
Whats the difference?
Is there a difference when draining / re filling vented and unvented?
Is there any special precausions I should take or do?
Any additional advice?
Any advice, comments or pointers are greatly appreciated, last thing I want to do is cock my central heating system up.....the Mrs really would KILL me!