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js6343js6343's avatar
js6343js6343
Explorer
Aug 14, 2014

I'll never do that again

After 4 years of RVing, and just when I think I am getting the hang of it, another lesson is learned the hard way.

I am in the process of putting the TT away for the winter. So I am pulling the anode rod to drain the water heater. I disconnect the city water hose to releive pressure and proceed to unscrew the anode. Suddenly, the anode rod launches out of the WH under pressure and a sustained blast of water crashes into my face. If my sons had seen it, I would be the deserving recepient of a lifetime of ridicule. Lucky I did not have the water heater turned on. Or the embarrasment could have turned more serious.

So removing the city water hose DOES NOT releive pressure. You have to open the faucets inside the rig. But I guess all of you already knew that. I guess I did too. But it is so easy to forget even important steps on these rigs. This is one step I will not forget again. File under "stupid"

28 Replies

  • Buddy of mine went to take the drain plug out without releaving the pressure. He never did find the plug after it blew out.
  • You are not alone. I wish the manufacturers of these water heaters would put in a low level drain cock. It really could serve two situations: 1) relieve pressure to remove anode and 2) drain water from the tank for times when heater is not being used.
  • I also empty the hot water lines first with the valve open so there is no water in the hot water heater. I always thought that even just having water in there could cause it to push the rod out.
  • On our Arctic Fox, there is a small relief valve about a foot above the anode. I lift up on the relief valve when I am ready to empty the water heater and water comes out. It releases the pressure.

    I also use the relief valve to release the air so the water heater can fill all the way up.
  • Awwww, what's 40 psi between friends?

    I haven't done that (yet) but I have removed the anode rod when the water was still a little hotter than it should've been.
  • Or, maybe you could try releasing the pressure relief valve by flipping the little lever.

    Glad you were not hurt. Seems like everyone does this once. Don't let it get to you.

    Oh...And if you think now that you've done that....Now you know it all. You probably don't.

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