Hi lgubbels,
Welcome to the Heartland Owners Forum and Family. We have a great bunch of people here with lots of information and all willing to share their knowledge if needed.
I guess you bought it used... are you sure there is not a blue zipper pouch stuck back or overhead in a cabinet... seems they usually get put away really good. But never the less this is a
link to manuals here on the forum. The owners manual is pretty generic as almost all are,, but there is also the appliance manuals there.
Check out the Portal Page and look at the Heartland Owners Club. Join us at some of the rallies.
Enjoy the forum and your Greystone.
Jim M