Hi I have the above mentioned boiler and have absolutely no idea how to use the time switch. Any ideas on how to set it up. It is an old looking time switch where you push in or out the little black plastic things on the outside of the clock. The trouble I'm having is finding out if the middle clock is relative to the outside timer, its been moved around and the heating then does not come at the times i've put down. I have the outside push in things, 24 hour clock, inside that it has 12,3,6,9 clock with 2 hands and then another arrow which makes a click when you rotate them round. Any help would be much appreciated.