Make sure the printer is set up on the wifi network. Make sure that you followed the installation instructions accompanying the printer to achieve this. It will involve entering your SSID and any password associated with the SSID. Make sure you can print wirelessly from a PC or Mac to show it is on the network properly.
You should not need them, but you could try one of the HP printing apps from the app store, but as I said, if the printer is set-up correctly on the network then it should "see" the printer.