Originally Posted by DustyRoads
Tom48 the only problem with only opening up faucets is if you have the bypass valves incorrectly set, like in the photo. You won't know if the tank is full or not. Also opening the valve I have found lets air out of the tank that faucet don't always do. Just my 2 cents.
As everyone has said the critical thing is to make sure there is water in the hot water tank before turning on those switches.
GREAT CATCH I forget that WINTERIZING VALVE issue, since those of us in SoCal seldom get to think about actual Cold Weather, except when we deliberately take the rig there..