Air in hot water lines
I have a Crossroads 5th wheel, 2013. I winterized it in November and recently flushed out the antifreeze. After clearing all the lines of the pink stuff, 2 things happened. One, when using the pump...
Forum Discussion
ford truck guy wrote:
When I fill my HW tank for the first time after flushing, I open my HOt Water Heater purge valve located at the top of the heater ... It will push out most of the air before allowing the water to flow out...once it's all water and no air , I go inside and turn the hot water spigot on and keep it on until it's water only..
By design, RV water heaters should have an air cushion at the top of the tank for the simple reason that air is compressible and water is not. When a tank of cold water is heated, it will expand. If no air cushion is present to absorb the expansion, the heated water will push its way out the pressure relief valve, which will tend to have a continuous drip of hot water whenever the burner/heating element is on. If you have actually bled all of the air out of the top of the tank, you might want to consider restoring the air cushion.
Rusty
