Welcome to Justanswer.com, my name is ***** ***** I will do my best to assist you.
Epson connect is a wireless printing app. The Tmu220a is an impact serial /pararrell receipt printer. Its not a wireless printer.
There is an expensive module you can use to turn that printer into a wireless printer. Here http://amzn.to/1OAdaNa
Once its wireless, you can then use other wireless devices to print to it.. But even then, its not going to work with epson connect, or with mobile phones or ipads. It still needs a wireless PC or Mac that can load the driver and software and then print to it.
Thats as close as you can get that model of impact / receipt printer to being a fully fleshed out wireless device.
If you have further questions or concerns, let me know.
I strive to provide great service, and greatly appreciate a rating of excellent ( 5 stars ) selected and submitted below this answer or at the top right of the screen. I always answer follow up questions.
Senior Technician and Network Switching Systems Operator / Maintainer.