On windows 7 here, there are installed in:
...\Documents\IK Multimedia\T-RackS 5\Presets\Global\Engineer Series
You will see that they are "Global" presets and are loaded through the Global presets menu in the TR5 standalone program or the TR5 Suite plug-in:
NB: There are presets from other engineers too - make sure you download and install them. And, the presets use a wide range of FX and you may not have all the FX included in them.