atwood 10 gallon water heater
my water heater in my rv leaks out of the pressure relief valve when the heater reaches 140.
Forum Discussion
J Walker wrote:amxpress wrote:
According to Atwood, it is suppose to open at 140 Degrees.
Maybe the question should be, why is it getting so hot?
The Atwood water heaters work at a high thermostat setting, non adjustable. I haven't measured my water temp but it must be close to 140 degrees. The pressure relief valve works on pressure generated by the expanding water.
You nailed it, it's usually not the temperature that triggers the relief valve, it's the pressure because there is not air gap for water to expand when being heated. RV's plumbing is a closed system with a check valve at the water inlet. It would amaze you if you put a pressure gague on a faucet in or outside the rv how much pressure will build in the system...
