I found this spec sheet for my water heater which shows where the anode is. However I'm not so sure which of two ports is the anode. Here's a picture.

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In the spec sheet diagram it seems the anode is at the green circle but that's the PRV so what gives?

I know I shouldn't ask what this is but I'll include it in case it relates to the main question.

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  • Looks like the T&P valve is plumbed in where the anode rod should be, and the hole where the T&P valve should be, is simply plugged. – Tester101 Apr 19 '16 at 23:41
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    Looked through some documentation, and it does say that the T&P valve can optionally be installed on the top of some units. However, it does not mention where the anode is, when the T&P is on top. – Tester101 Apr 20 '16 at 0:02
  • @Tester101 that's what I was thinking. I have no idea why they did that. – Dean MacGregor Apr 20 '16 at 0:02
  • The installation manual's Repair Parts List, shows a secondary anode on the hot water outlet. So possibly, you'll have to remove the hot water line to access it. I might contact the manufacturer, and ask them before attempting it. – Tester101 Apr 20 '16 at 0:13

The anode rod was under the hot water pipe. Getting the water heater nipple off was tough (to say the least) I bought some black pipe and a 90. I drilled a hole through the nipple and the 90 and put a thick (forgot what size) bolt through and used the pipe as a really long breaker bar. (You're going to need new bits for this. I wasted an absurd amount of time drilling with old ass bits making literally no progress before I bought some new bits which cut through like butter) With that setup I got it about an eighth of a turn which was enough to switch to a pipe wrench and channel locks. I put the new anode rod where the t&p valve was and put the t&p valve on the front.

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