What CPU HAVE you used it with? 775? ANY 115x? None yet?
Do you have a picture of the unit?
I think chances are very good that if it is an older Zalman unit, used with a 775 socket, it probably will not work unless Zalman offers an adapter kit for it for 115x platforms, BUT, there is also a good chance that an older cooler that was enough for a 775 socket CPU may NOT be capable of handling the TDP of an 1151 socket CPU especially if it is a Coffee lake or Coffee lake refresh model, which yours is.
Knowing the model of the CPU is going to be essential. If you plan to overclock, I'm going to just say no right now.