Water Valve on 2012 Salem Hemisphere 346QBUD
Hello I recently purchased a 2012 Salem Hemisphere 346QBUD and I am wondering what the white valve in the following attachment is for. Do I need to have this valve open when I am out camping. I am new to rv's could someone please let me know. I know that the red valve above it is for bypassing the hot water tank. It is the other valve I am not sure what it is for. The unit is still winterized and the valve is closed. I want to get it ready for summer soon, so I will be adding water to the system once I have water in should the lower white valve be open or closed.