[QUOTE=Jamesbrown;165274]page 86 (pdf page) of the linked–from what you describe----maybe it looks like that?
http://www.catoilandgasinfo.com/_downloads/lebw0006-00.pdf[/QUOTE]
Thanks Jamesbrown, that looks like the set up of the C280’s that I worked with. So I guess it is official, don’t turn the starting air off to a modern C280 when in operations.