No - when I did the boiler install, I needed to tap into the same T on the oil boiler's return that the indirect used. That run had a Taco Flochek in it. Since the circ is labled IFC, I decided to remove the Flochek ... because it shouldn't be needed! Well, after I fired up the boiler I was wondering how the hell I have 176° hot water in the tank, since the circ cannot be programmed to run over 150°. Turns out, ghost flow.
That IFC circ isn't an IFC at all!
I need to put the Flochek back in. Will have to be on the supply line, since there's no room on the short return now. At least I won't have to drain much out of the boiler, since it's up high.