I think the wording in the heading of the document is unclear myself, so if I provided misinformation hopefully someone will clarify.
However I can tell you that the model number 4TXCB036BC3, for example, is a rated match on the AHRI database with both a heat pump and an air conditioner. The letters after the "BC3" may designate further info regarding the setup. So indeed the 2/4TXC coils are used with both heat pumps and air conditioners. Yes, I'm just thinking, or typing rather, out loud.