Hot Water Flow Inconsistent w/ Pump - Dutchmen Owners

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Old 07-10-2018, 04:58 AM   #1
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Hot Water Flow Inconsistent w/ Pump

I've searched and I'm not sure if my problem is the same as others.

When NOT hooked up to city water, my hot water flow is inconsistent and spurts a lot, like there's an air pocket built up in the lines or something. Only hot water from the kitchen sink, bathroom sink and shower. Cold is fine. Also, the pump runs for a long time after water is shut off.

Any ideas or where to look?

Thank you!
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Old 07-10-2018, 09:46 AM   #2
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Check your hot water bypass sounds like it's in bypass mode
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Originally Posted by Brandt51 View Post
I've searched and I'm not sure if my problem is the same as others.

When NOT hooked up to city water, my hot water flow is inconsistent and spurts a lot, like there's an air pocket built up in the lines or something. Only hot water from the kitchen sink, bathroom sink and shower. Cold is fine. Also, the pump runs for a long time after water is shut off.

Any ideas or where to look?

Thank you!
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Old 07-10-2018, 10:46 AM   #3
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Burp your water heater tank, open the pressure relief valve until water comes out. For safety reasons, turn it off and let it cool down some first.

A second item to check is your outdoor shower hook up if you have one, make sure both valves are closed when the hose is not in use. If these valves are left open, it will cause the hot and cold water to mix there and travel throughout your whole system.
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Old 07-10-2018, 01:19 PM   #4
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I replaced my water pump to eliminate symptoms like that.
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Old Today, 01:11 PM   #5
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I replaced my water pump because of symptoms like that, but both hot and cold water were pumping air. (Air in the lines causes the spurting as it passes through the faucet valve.) The pump chamber had a crack on the low pressure side.
Air has to be getting in some how. If it is truly only hot water, there may be air in the hot water tank. The air will eventually be forced out and the spurting will stop spontaneously. Every time you drain the hot water tank there will be more air trapped in the tank when you seal it and start pumping again. Air in the tank causes the pump to run longer after shutting off the faucet. The less the air, the shorter the after run.
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