I bought the same brand, similar model (I might have an older model comparing the styles of the buttons of yours to mine). For chilled water, I put a bunch of ice in a jug and added tap water, shook it up and poured into the bottom tank. Nothing special. I put 2 ice packs up top, and 2 in the bottom tank. And also added chilled water to the bottom tank. I’m using it in my home office on the second speed option, and it definitely feels cooler in my vicinity (as my thermostat reads it’s 76 inside). The fan is like 3 feet away from me and blowing directly at me. So far so good. It’s only my first time using it though. Remains to be seen if this will last the test of time.
If you’re expecting this machine to be as an AC then this one isnt for you. If you’re looking to save on your electric bills and cooler than your ceiling fans then this one is for you. The ice last about 45minutes to an hour.