Hi, I’m new to this–still a student. Is it okay for the TPR discharge pipe to empty into the water heater tank pan if the pan is piped to the outside? Also, is this the correct piping material?
Thank you in advance for any input,
Daniel
Yes and yes, it appears so.
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In most places of USA, it is acceptable. In few certain places that follow UPC, it may not be. You should fill out your profile to indicate location because construction methods vary with location. BTW, your pic shows amateurish installation of copper piping.
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^^^^^^^What those two said^^^^^^^^^
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Awesome response time! Thank you very much!
Cool, thanks for the quick reply!
Hi Daniel, these guys forgot to welcome you to the forum, So welcome to the forum, enjoy 
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Thanks, Scott! I really appreciate it.
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I think Larry is trying to pass on the tradition to you 
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Somebody has to be the welcome wagon. 
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I agree you’re going to put Larry out of business. Larry you need to talk to your union stewart about this new friendly guy🙂
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Larry has been slipping, So I have been helping him out.
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Keep up the good work Scott. When I did plumbing work full-time I always left one or two things for the plumbing inspector to find so that he felt like his job was justified. You’re going to have to leave at least one welcome for Larry so he feels good 
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Who you calling’ a wagon, Mr. Bridges?
LOL! I appreciate the help Scott.
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you have never heard of the welcome wagon?
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Yeah, but it is hard to razz you with that, Scott… 
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Welcome Daniel.
Larry and Scott. You guys remind me of Tom and jerry, which I still love to watch. Lol!
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Just trying to add a little humor to keep it interesting, Enjoy.
I understand it may be “acceptable” in a lot of areas. I wouldn’t want it to discharge to the pan in my home. The manufacturer usually recommends testing the tpr valve once a year, although im sure 98% of people don’t. But if you test it into the pan, your water heater will be sitting in water until it evaporates. Also if it allows a small amount of water to discharge, it will not be obvious and a problem may exist for a long time without knowing about it because it is draining to an inconspicuous location. Lastly if the valve opens fully under extreme pressue, the pan drain will not be enough to drain the high pressure boiling hot water away anyway and especially if it is raised up from the floor the water could splash and injure someone in the area.Just my thoughts, but i am sure it is common and “acceptable” most of the time.
And watching out for the cat! 
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