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Thread: Navian heater clean procedure

  1. #1
    DIY Junior Member grande's Avatar
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    Default Navian heater clean procedure

    I have a Navian NPE 240 tankless water heater. It has a small .5 gallon tank and a recirculation pump. Its time to flush the system for the first time. Is there an override in the system so I can use the recirculation pump in the unit to do the flush?

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    Master Plumber master plumber mark's Avatar
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    you would have to post a picture of your unit...
    usually there are a couple of bypass valves installed
    under the unit for easy flushing......

    this is normally done by a certified technician with the proper pump
    and fluids to flush through the unit...

    were these installed ???..

  3. #3
    DIY Junior Member grande's Avatar
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    It does have flush valves, I installed when I installed the unit. My question is there a way to use the internal recirc. pump to do the flush and not have to have an external pump. ie only run the internal pump in the heater?? I was thinking there might be a pump test or flush mode built into the logic on the controller.

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