Please review plumbing setup for point of use water heater


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Old 12-05-13, 03:16 PM
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Question Please review plumbing setup for point of use water heater

I finally manned up and took a stab at setting up my Rheem 2.5 gallon heater under my kitchen sink. Couldn't find a lot of info about fittings to use so I may have made some rookie mistakes. On the left is the cold inlet with a 3/8" to 1/2" hose threaded into a 1/2" male to male adapter. I couldn't come up with a cleaner way to accomplish this. On the right is the hot output with the supplied 1/2" to 3/8" adapter and a 3/8" hose leading to the hot side of the faucet. The 3/4" bypass is *now* routed down into the pan via some PVC pipe.

At this point nothing leaks, instant hot water is fantastic, all looks good. Do I have any reason to be concerned about any of these fittings?

Thanks,
Paul
 
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Last edited by greystone_way; 12-05-13 at 04:16 PM. Reason: typo
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Old 12-05-13, 04:09 PM
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Looks OK..... Please pipe relief valve to the floor.....

Side note..... with the flex lines teflon tape is not needed. There is a rubber seal in the flex lines that make the water tight connection... Tape may actually make it leak....
 
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Old 12-06-13, 04:34 AM
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Loose the tape where the flex lines connect.
I would have used a dielectric nipple on the cold side.
What Is a Dielectric Nipple?
 
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Old 12-06-13, 06:29 AM
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I would have used a dielectric nipple on the cold side.

Or brass like you have on the hot side.
 
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Old 12-06-13, 11:05 AM
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Thanks for the input, I'll remove the tape on the threads used with the slip joints. The brass 1/2" nipple is on the cold side, so that has a stainless steel hose attached which also connects to the copper plumbing in the house. Sounds like that isn't a good setup, mixing metals. I like the suggestion above to get a dielectric nipple for the cold inlet, do I need to worry about the stainless line going into the copper plumbing?

Thanks.
 
 

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