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Thread: Navien Tankless Water Heater---Well Pump Setting

  1. #1
    DIY Junior Member JTCA's Avatar
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    Default Navien Tankless Water Heater---Well Pump Setting

    I just installed an NR-180A. The system has a well pump. What does the well pump setting do and how in the world do you set it?
    The Operation Manual (page 23) seems like a very poor translation or maybe has the wrong information.
    Can anyone shed some light on this?

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  2. #2
    DIY Senior Member zl700's Avatar
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    Changes in pressure equates to fluctuations in flow. When flow changes, the burner can't react quick enough resulting in water temperature fluctuations and spikes.

    Enabling the well setting evens out the burner operation.

    It is quite easy to turn on following instructions on that page, changing the C to a S (set)

    A NR 180 in Indiana? Hope it's a 1 bath house, 150,000 btu unit for that region is undersized for any more than that.
    If Payback is so important to you, why are you not driving a Toyota Corolla?

  3. #3
    DIY Junior Member JTCA's Avatar
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    Thanks for the information. Yep, one bath and working very well in fact.

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