Winterizing Question
In the winterizing process, after emptying the black tank and using compressed air to blow water out the black tank flushing line, am I correct in assuming that I do not restore any black tank sewage ...
Forum Discussion
obgraham wrote:
I'm not all that bright but I never understood the point of a WH bypass.
The bypass is for use when pumping antifreeze through the lines, you don't want to fill the water heater with antifreeze: it takes too much antifreeze, it's too hard to flush out the antifreeze from the heater, and on some heaters it might foster some corrosion. Without the bypass, there isn't any way to pump antifreeze through the hot water lines without filling up the heater with 6 to 10 gallons of antifreeze. But with the bypass, you drain and blow out the heater, switch the bypass, and can then pump the antifreeze through the rest of the system.
There will always be a little water left in the bottom of the water heater, but as you know that's not a problem if it freezes, and there is plenty of room for the ice to expand. There is no reason to allow antifreeze into the heater (and plenty of reasons to avoid doing so.)
You don't need a bypass if you never use antifreeze.
