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Old 08-14-2014, 10:44 PM   #1
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Hot water and showering

Our hot water can go from scorching hot to cold while washing dishes and especially while showering. It there an adjustment I am missing? I've set the knob in the BR cabinet to the lowest since we are in the AZ heat.

Thanks,
Joe
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Old 08-14-2014, 10:49 PM   #2
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On demand water heater?

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Old 08-14-2014, 10:50 PM   #3
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Check your bypass valves.
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Old 08-14-2014, 10:52 PM   #4
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Yeah, your bypass is probably opened. Check it out.
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Old 08-14-2014, 10:53 PM   #5
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Your water bypass valves are probably in the wrong open/closed configuration causing hot water to surge.
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Old 08-15-2014, 12:39 AM   #6
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Thanks everyone, where are the bypass valves?
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Old 08-15-2014, 12:40 AM   #7
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Yes the MH has an on demand water heater.
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Old 08-15-2014, 07:59 AM   #8
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Do a search. A lot has been written on this subject. The Gerrard WH are a bit temperamental. A Oxenator shower head will help. Remember it's all about keeping a good water pressure.


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Old 08-15-2014, 08:36 AM   #9
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Even with "On Demand" hot water, an open shower faucet with a closed wand can play havoc with water temperature.

With the push button on the wand closed and the valves open, cold water can cross over and dilute what hot water you are getting. This will give you hot water initially, but lukewarm to cold water as the hot water in the pipe is used up.
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Old 08-15-2014, 10:34 AM   #10
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Originally Posted by hbjoe3 View Post
Thanks everyone, where are the bypass valves?
They should be right by your tank... you should see three valves, one for the incoming water, one for the outgoing. The bypass is the one in the middle.
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