SDcampowneroperator wrote:
Do not fret. Do no not put gallons of a/f into your fresh water tank You have done the right thing in switching your water heater bypass valves; draining the water heater, your fresh tank then switching your pump valve to suction from fresh water tank to antifreeze suction .
Check your pump on switch, its fuse , whatever to get it to run. then just let it pump the A /F to each faucet , shower and toilet. Do not forget the outdoor shower if you have one.
Rv pumps are diaphragm self priming. You do not need to give them head pressure they can suck up fluids.