Welcome to iRV2.
You'll want to leave the water heater by pass on , until you, get clear water flowing from ALL the hot and cold taps, and toilet .
Do you have a washer/dryer , or the pre-plumbed option?
If you have a whole house water filter housing , and you see RV, water system anti freeze in it , remove the filter housing and drain that A/F before you start.
The RV , A/F was probably circulated using the 12 volt pump , you need to get fresh water into the tank and run the pump to get clean water through it too.
It can take many gallons to get the A/F out , if you notice a taste from the taps, then drain the supply hose , and put a 1/2 cup of bleach in the hose , then run that through, to remove the bleach taste and smell , you can do the same with white vinegar .
Personally I wouldn't drink the water that comes through the system until you have run park water through for a few days. Take some jugs of drinking water from your house to carry you through .
EDIT: don't forget to turn the winterizing system off and fill the water heater.