Emptying fresh water tank, using city water

[Thejonl]

HelliHello, everyone. I have a 1984 jayco class c rv. I'll be living in it for a couple months while my house is being finished. It gets pretty cold here in Oklahoma and I want to make sure I have everything winterizing, while still functional. I built skirting all the way around so underneath is pretty air tight.
My question is about the fresh water/city water tanks. I'm hooked up to the water supply and the hose is wrapped with heat tape. I don't need the freshfresh water and I want to make sure it's empty so it doesn't freeze. Is there a valve somewhere so I can pump out the fresh water and just use the 'city' water or does the fresh water tank fill up even when I'm using the city water?

[Murff]

The fresh water tank will not fill up using the city water connection. The fresh water tank should have a drain. Once empty and the drain valve closed, you mighy put a little RV antifreeze in the fresh water tank.

Murff

[dewey02]

The FW tank will have a drain valve on it somewhere beneath your vehicle.
It is a gravity feed. Just open the fill hole so air can get in (in case your vent is clogged) and then open the drain.

Even if a little bit of water is left in the bottom of the tank and freezes, it will do no harm.