Navian heater clean procedure

Discussion in 'Water Heater Forum, Tanks' started by grande, Nov 24, 2013.

  1. grande

    grande New Member

    Nov 24, 2013
    South Carolina
    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?
  2. Master Plumber Mark

    Master Plumber Mark Master Plumber

    Feb 6, 2005
    Sensitivity trainer.. plumber of mens souls
    indianapolis indiana - land of the free, home of
    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 ???..
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  4. grande

    grande New Member

    Nov 24, 2013
    South Carolina
    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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