Hot Water Problem

 
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Old 12-12-2017, 09:13 PM   #1
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Hot Water Problem


I am in the process of finishing a new house. I did not rough in the plumbing in the house. i am just installing hardwood, tiles and finishing the bathrooms. installing vanities, toilets and shower heads and such. i am having a hard time with air in the water lines. cant figure out where it is coming from. if the hot water sits for a few hours, when you turn a tap on it will spit and sputter until the air is out of lines. i have tried shaking the hot water tank to see if maybe there was air trapped in it. but no go. i tried letting all the taps in the house run for 30 minutes. no good.

Not sure where the air is coming from. The cold side has no issues. It is a well with a pressure tank and its not a jet pump. the pump is in the well pipe. If i let it sit for a couple of days it takes a few minutes to get all the air out and stop the spitting. then its good for a few hours again if you use it.

I need some help.
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Old 12-12-2017, 09:18 PM   #2
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Re: Hot Water Problem


Is it possible that the water heater is running hot enough to boil?

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Old 12-12-2017, 09:22 PM   #3
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Re: Hot Water Problem


i was thinking something along those lines. i hear the water heater gurgling when it is heating. but was not sure it was supposed to or not. its electric. is it adjustable? its brand new and would think it would be set right from factory. If its adjustable i guess it would be under one of the panels? i will check when I'm at the house next.
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Old 12-12-2017, 09:32 PM   #4
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Re: Hot Water Problem


Yeah, they often gurgle; that's not a bad thing per se. Yes, there's always an adjustable thermostat. But if it's overheating enough to create that big of an air pocket, the T&P valve should blow off.

Probably best to see what your plumber has to say.
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Old 12-13-2017, 10:58 AM   #5
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Re: Hot Water Problem


Maybe dissolved gasses coming out when it gets heated.
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Old 12-13-2017, 11:54 AM   #6
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Re: Hot Water Problem


faulty or temp set to high at t-stat and/or faulty blow off valve.

Electric HW tanks can sometimes have two t-stats to adjust (an upper and a lower). Remove the cover/s and take a look at the settings. Maybe check the water temps but if it's scalding (which could cause boiling) you should know it.
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Old 12-13-2017, 07:27 PM   #7
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Re: Hot Water Problem


Shut the water heater down and see if it continues.

There is a good possibility that there is a high spot that is trapping air and releasing it slowly.

I have had hydraulic systems where I had to back flush them to get the air bubbles out. Bottom (Bleeder) to top (reservoir).
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Old 12-13-2017, 10:32 PM   #8
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Re: Hot Water Problem


i will look at the temp setting and adjust if needed. but to the touch the water is not overly hot. if it looks good i will try shutting the tank off for a few days and see if that clears it up. then i will know if it is coming from the tank or not anyways.

Thanks guys
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Old 12-14-2017, 07:14 AM   #9
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Re: Hot Water Problem


Maybe try draining the tank, open the TPR valve.
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Old 12-14-2017, 10:28 PM   #10
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Re: Hot Water Problem


Any chance you are in Oil sand country? any Natural gas in the water, coal seams penetrated by the well bore?

Can you ignite the gases?
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Old 12-20-2017, 05:53 PM   #11
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Re: Hot Water Problem


A damaged/ wore out heating element, shorting partially to the water, creating O2 and H2 gases? Check for Voltage on tank metal when it is heating water, some tanks alternate elements so you have to run enough hot water or just temporarily raise the set temperature(s) on two thermostatic switches.
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Old 01-12-2018, 10:56 PM   #12
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Re: Hot Water Problem


when submersible pump runs, is it drawing water level in well casing down far enough/fast enough where it's drawing some air along with the water?

or, the check valve on top of your submersible might not be holding well, allowing water to run back into well, and everytime pump kicks in, it's pushing that slug of air ahead of the water
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Old 01-13-2018, 06:48 AM   #13
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Re: Hot Water Problem


Quote:
Originally Posted by dayexco View Post
when submersible pump runs, is it drawing water level in well casing down far enough/fast enough where it's drawing some air along with the water?

or, the check valve on top of your submersible might not be holding well, allowing water to run back into well, and everytime pump kicks in, it's pushing that slug of air ahead of the water
That happened on one of my jobs, a small hole in the pipe at the check valve

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