i think you may be lying. there is no way anyone would try and charge that much. if he did he wouldnt have many customers unless he was in a thong and a tool belt with some dodgy ska-kwik-save music going on in the background
its can be a **** to get out, plus they block up with sh1te and the holes are so teeny. and as you say the cap always leaks onto the plate heat ex. i wonder how many of them have been changed cos of it
do you think someone had a really bad experience with a gas engineer once so went out and designed the condensate trap for a glowworm cxi to get his own back. god i hate that man. or woman, it probably was a woman. maybe she designed the ideal isar too.
the way i see it is if no water is flowing there will be an open circuit meaning no power through the switch, when there is a flow of water there will be a closed circuit allowing power through the switch. bahama's work bacwards to most boilers , they fire up and then check to see if there is a...