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Author:
packy (MA)
is your lower picture the cold side of the water heater?
what is the flexable connector attached to in the upper right of that picture?
it looks like you are taking water from the cold side of the tank and pumping it into the bottom of the tank??
this would do what you are describing.
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Author:
4running (TX)
That is the input or cold side of the hot water heater. I am sorry but i don't undestand what you are describing. Can you explain further?
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Author:
4running (TX)
The flex goes from the ball valve, to a tee to an accumulator then into a one way valve then into the water heater tank.
Thanks for your help!
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Author:
packy (MA)
a recirculation line takes water from the furthest fixture hot pipe and pulls it back with a pump connected to the drain at the water heater.
see diagram at the end of this page...
[www.plumbingsupply.com]
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Author:
4running (TX)
I see the diagram and understand.
Are you suggesting i remove the expansion tank on the cold side?
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Author:
hj (AZ)
no. IF your circulation system has a defective, or missing, check valve and/or pump that provides a "fast path" for cold water to get to your shower before the hot water can travel its normal way. Increasing the hot water flow by running another fixture will OVERCOME the "short circuit" and provide normal hot water.
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Author:
4running (TX)
If i run another faucet in the bathroom the cross over seems to go away.
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Author:
4running (TX)
How do i find this "fast path" and close it?
I want the pump to circulate the water through The correct path.
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Author:
hj (AZ)
You do NOT have to find the "fast path", but you do have to shut it off at the water heater, if you do have. How you shut it off so the water flows the correct way depends on the piping at the water heater and your pictures do not show whether you even have this particular problem.
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Author:
4running (TX)
How can I find out what I need to know?
Can a dip tube in the water heater that is broken cause this?
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Author:
packy (MA)
a broken dip tube can cause this but opening another faucet would not correct it as yours does.
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Author:
hj (AZ)
With a broken dip tube it would only get worse when a second faucet was turned on.
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Author:
4running (TX)
Should the one way valve on top of my water heater be installed as in the picture? Or be installed Horizontally upstream of the pressure accumulator?
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Author:
packy (MA)
when the tank heats, the expanding water can not get to the expansion tank with the check valve there.
remove it..
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Author:
hj (AZ)
Technically, you have an expansion tank, NOT an accumulator. While they both work similarly, the have different purposes. A accumulator maintains flow as the pressure in the system drops. An expansion tank limits the amount of pressure increase as the system's volume increases due to thermal expansion.
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