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  • Navien NPE-180A -- Internal Circulation vs External Circulation?
    The internal mode will utilize the NPE-180A's internal pump to recirculate hot water only within the water heater This is utilized to maintain the temperate within the 180A's internal buffer tank Internal mode will not reduce the time needed for hot water to arrive at the home's faucets
  • Navien NPE-180A, loud humming - Love Plumbing Remodel
    We had a Navien NPE-180A installed almost 5 years ago and recently it started making a loud humming whining noise when the hot water is used, could the heat exchanger be doing this? Another question this time I would like to do the system flush myself and was wondering if there is any benefit of using cleaning vinegar which is 6% instead of
  • Navien NPE-180A nightmare. . . - Love Plumbing Remodel
    Builder installed a Navien NPE-180A in our new home about 6 months ago The condensate drain lid was leaking, and the incompetent plumbers couldnt fix it for months so the builder ordered a brand new unit and had a new plumber install it (After some googling, i found out they could have greased an O ring to fix it lol)
  • Controling Navien NPE internal recirculation pump
    I am contemplating getting the NPE-180A and controlling the pump with a remote control in each bathroom This setup is very similar to the one I have with my 40 gallon tank setup with recirc return line by using an X10 home automation module to program the remote to turn the pump on for 4 minutes and automatically turn off whenever someone
  • Navien NPE-a series Remote Control How-to Video
    I was able to integrate an RF remote to control the internal recirculation pump in the Navien NPE-a series tankless water heaters I own the npe-180a The video is for informational purposes only and I don't make any warranty assurances
  • Navien NPE-180A humming in the key of D - Love Plumbing Remodel
    We had a Navien condensing water heater NPE-180A installed about two months ago For the last few weeks, when the hot water is running, the heater hums vibrates plays a fluted musical note at the same pitch as the D above middle C on the piano It doesn't start singing until about 30 seconds
  • Navien NPE-240A E438 Code - Love Plumbing Remodel
    View and Download Navien NPE-180A service manual online NPE series Condensing Water Heaters NPE-180A water heater pdf manual download Also for: Npe-210a, Npe-180s, Npe-210s, Npe-240s, Npe-240a, Npe-150s
  • Navien NPE 240A2 Intermittent Low flow - Love Plumbing Remodel
    Hi, I have been struggling to the past few weeks with intermittent problems of hot water dropout on a 4 month old Navien NPE240A2 system Setup: NPE 240A2 installed on exterior of home External recirculation activated with dedicated return line using built in pump 3 showers: #1 (Hans-grohe
  • Navien A2 model settings that affect recirculation time
    I recently had a Navien NPE-180A2 installed together with the Navicirc valve under a bathroom sink I have the temp set at 121 degrees Fahrenheit I tried the intelligent mode circulation for a few weeks but that didn't seem to improve the availability for hot water for routine morning showers (normally take showers around the same time every
  • NPE-180A2 does not seem to be circulating correctly through Navicirc
    Navien NPE-180A2 Manual Online: External Recirculation Mode To use the external recirculation mode: 1 Connect the water supply to support recirculation Refer to the ''[NPE-180A2 210A2 240A2]'' diagram on page 25 2 Set the 2-way valve inside the water heater to ''EXT '' 3 Press the





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