The product page doesnt specify that you can mount a 240mm rad at the top, just a 230mm fan. So there is definitely the space to do so if you wanted, might just have to get handy with a dremel or otherwise mod the case.
Other than that, you can fit two 120mm rads at the back and bottom of the case.
You also have an option to mount a 480mm square rad on the side panel, or a single/dual 240mm rads.
Remember you can always externally mount a radiator.