Unfortunately, this gets asked and answered often. If you will do a search on here, you will find numerous threads with varying explanations. This is the first one I found with Gergetown, GeorgeTown water heater by-pass
There are many others, some with diagrams. Search and ye shall find.
Sorry, can't help more, but sometimes you got to do your homework like the rest of us did.
2012 Ford F250 ext. Cab 4x4
2002 Jeep Wrangler Sahara
2008 Yamaha V-Star 650 Classic
2008 Work and Play 18LT