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Old 03-24-2012, 01:07 PM   #1
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Hot water from both sides of faucet


We just had our gas hot water heater replaced yesterday and now we are getting hot water intermittently (constantly at one sink) at various points in the house... actually the sinks that are furthest from the water heater. When the plumber installed it he seemed uncertain about how the recirculation pump we had on the previous one was installed, so he hooked it up like it was before... I think. Other blog entries I've read suggest that it may be a problem with the check valve on the recirculation pump or that the pump was installed backwards. From appearances it looks like it did before (the pump, anyway). Also, both of the hoses/pipes on the heater are hot, but one should be the cold water coming in. Attached are a couple of pictures of how it's currently installed. Can anyone tell from the pictures or by what I've described what I can try to test for or correct the problem? Also, I've asked the plumber that installed it and he's stumped.
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Hot water from both sides of faucet-heater1.jpg   Hot water from both sides of faucet-heater2.jpg  

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Old 03-24-2012, 01:13 PM   #2
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Hot water from both sides of faucet


There is a bridge manifold that works with that pump should be installed at the farthest sink you control the hot water return with the hot and cold valves under that sink connected to that manifold. The pump is installed correctly. The timer should be set to turn on and off at peak hot water use times.

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Old 03-24-2012, 01:20 PM   #3
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Hot water from both sides of faucet


Looking at that picture I would be a little concerned with the installation of the flew pipe. also the hot and cold lines, never cared for those flexible supply pipe. Unprofessional in my onion. No permit I presume. This would not pass inspection, just from what’s seen in the picture.
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Old 03-25-2012, 12:31 AM   #4
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Hot water from both sides of faucet


Wow, really? Would you mind elaborating on your concern? What are the risks with the current setup?
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Old 03-25-2012, 11:02 AM   #5
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Hot water from both sides of faucet


Also that relief valve is plumbed wrong.
How would you know if it was leaking or poped off plumbed like that?
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Old 03-25-2012, 11:07 AM   #6
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Hot water from both sides of faucet


Also that relief valve is plumbed wrong.
How would you know if it was leaking or poped off plumbed like that?
It also looks like the line was reduced in size.
http://www.oconomowocplumbing.com/de...-relief-valve/
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Old 03-25-2012, 01:37 PM   #7
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Hot water from both sides of faucet


Quote:
Originally Posted by joecaption View Post
Also that relief valve is plumbed wrong.
How would you know if it was leaking or poped off plumbed like that?
It also looks like the line was reduced in size.
http://www.oconomowocplumbing.com/de...-relief-valve/
That was my first thought as well....it's my understanding that PRV's have to be hard plumbed down and out without reduction in pipe size.

On those flexible lines....It's my understanding that it has to be copper flex lines...not the braided rubber....

In fact...the stuff I have (local building codes) requires hard copper pipe with a union at the tank.

On the hot water....I have been looking into those types of hot water recirc systems.....best I can tell....it's an ok way to do one if you don't have a dedicated return line...but without that return line the hot water has to have someone of getting back to the tank...so you shove it down the cold water line at the furtherst point...hence, you are going to get hot water out of that fawcet as well as any other ones that are on or near the return line....

Hence...when I do my recirc system...I'm putting in a dedicated return line.
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Old 03-25-2012, 01:55 PM   #8
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Hot water from both sides of faucet


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Wow, really? Would you mind elaborating on your concern? What are the risks with the current setup?
The only thing that is not allowed in my area is the flex on the T&P line. It cannot be reduced in size.

The craftsmanship leaves a little bit to be desired..

Have you resolved the recirc issue? Do you have check valves at a remote fixture?

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