Maybe I didn't explain it correctly - I understand how bypassing the water heater works but if you bypass the water how would the antifreeze get in the section of water lines that are outside the water heater and before the next closest water supply (which in my case is the city water fill). I'm not sure if it is ok to post a screenshot of the plumbing schematics from the Thor manual to show what I'm talking about.
So just to be clear, I am only asking how the antifreeze gets in the section of water lines before the water heater if you bypass it and the water heater is in a section of the plumbing where nothing else is after it.
I'm going to try to draw a quick picture and post it.
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