That is redundant. Manual Connect is re-announcing to the swarm and scrapping the tracker. Both of which are already on set intervals. Hitting the Manual Connect a lot is not a good idea and can get you banned at some private trackers.
The manual connect button is reactivating your internet connection because it has some traffic to send, so that’s good for your purpose. But the data it’s sending is doing the other things that DS mentions, and that’s NOT good. There should be some other freebie utility around that handles your problem, not just for Bittorrent, so it would be preferable to find and use something like that instead. All you need is something that connects to the internet, in a harmless way. Alternatively you could set your email program to check mail every 20 minutes or so, and that should suffice.