i would like to plum an aga into my heating system & was told i couldent leave the system connected to my worcester 240, even thouge we only use it for hot water. when i draned the rad's and used the hot suppley it was fine for 3 min then started bounsing and triped the reset. has anyone got any iders on whether i should be able to plum the aga into system and leve it conected to boiler(i know i will have to put an open tank feed in) or wether i can run the boiler with no water on the rad side. or any other iders welcome. cheers