Is brown oily substance on the bottom of the heat exchanger normal? Navien seems to be avoiding answering that question

Please assume that some homeowners are mechanical engineers who understand how to do this task better that the boy the plumber would send to their home.

Dude if you want to be affective go slower and more in depth.

Shout out to all the DIY guys that want to save money and DIY. Not difficult, but dealers will still charge you like its brain surgery. Warranty void be damned as they find another excuse to void a warranty regardless who does maintenance.

Thx

Cleaning of that condensate trap well solved my problem. You can’t believe how much dirt came out of that trap😂

Why is the check valve not upstream the tee. Before the tee on the main incoming. That’s where it needs to be to serve its purpose. Otherwise it’s pumping into the main as well. Thermal protection must also be added on the system within those circuits

Do do your maintenance when due!

THANK you for this quick fix for error 762. What a great supportive compay . Bravo glad I have a Navien in my home

This video helped me tremendously. Thank you so much. I was in a pinch and this was the most friendly realistic video that I found. You probably saved me hundreds of dollars.

Do those recirc valves fail after 2 years? I have a plumber recommending a direct line rather than using the included Navien valve b/c they say they fail after couple years

Absolutely amazing huge thanks!

Is the procedure or schedule different if the home has soft water?

I don't trust the companies listed on Navien's web site. We hired one of them a few years ago to install one of the units and it was a total train wreck. Turns out that Navien only certifies a COMPANY, not their individual technicians - so you may get someone who has never laid eyes on one of these units. I think that's what we got. We finally had to just hire someone else who came out and COMPLETELY REDID the install. Nothing was done according to Navien's standards. So now I'm looking for someone to come and flush the system for our regular maintenance. The guy we used before has retired. How do we find someone who is actually QUALIFIED to work on Navien equipment? Seriously.

My model NPE-180S2 is giving error code 762-00 in its error history… but is outdoors and doesn’t have top vents. Why else might it show this code? We did have a recent hard freeze if that helps.

Which way is the black valve (2-way) supposed to be turned for internal recirculating? 9 o’clock or 6 o’clock? Thank you!!

@eklof I have a Navien NPE-240s2. Is it possible to get it to recirculate?

Do you if there’s training classes for tankless water heater installing

Does the unit have to be shut off first?

Hi I did evrything like you did on video but when I connect pump to flush it water doesn't come out from hot side hose back to bucket. Any idea what to check?

Can anyone tell me what size o-ring the condensate clean out uses?

The local dealers i got are total scammers

Hey are you familiar with circulator pumps? I am putting a new one in and i have the part but only one shut off valve. From what I see on YT if you only have 1 shutoff valve you need to "bleed it" I guess of the air. Are you familiar with that? I have pictures as well.

Video is very helpful! I have a 240a installed with external recirculation line option. Dip Switch 1 and 2 are ON for intelligent mode. When the recirculation turns on I get the pipe knocking sound , as if air is in the line/pipe(PEX). Do you know what causes that to occur? I have been looking everywhere for information. I also wanted to ask if it's okay to lower the pump run time from the default 20 minutes down to 10 or 5 minutes? Thanks in advance for your help. The unit was installed over 2 years ago, and the knocking noise has increased over the last 6 months.

What is the thin black valve with the yellow stripe on it (in the center of the unit at 2:06) ? Is that something that needs to be removed and cleaned?

where's the next video to get nearly instantaneous hot water?

Yoou need to tell the home owner to suck the condensate line out, especially, if the C.L. has a long run!

thanks for the video for the inlet filter, how tight should the O-rings on this be?

This was an exact replacement for the old one that lasted about 10 years. kzbin.infoUgkx7yWIKcrbA9KMHkGSfcgxW2lsjHT6B8Sh The top of my mitigation tube by my roofline was just a 90 elbow which allowed too much debris to fall down into the fan, eventually ruining it. Without this issue, I bet it would have kept running another 10 years. When I replaced this fan, I added an extra elbow joint so the top tube now it does a 180, which should solve that problem. The radon guys around here wanted to charge me a $300 diagnostic fee, then parts/labor (probably close to $600 total). I installed this all by myself in about an hour for the cost of the fan; it would probably be even easier/faster with two people. FYI the manufacturer's warranty greatly differs depending on whether you install it yourself (1 yr warranty) or have a licensed installer do it (10 yrs).

This was an exact replacement for the old one that lasted about 10 years. kzbin.infoUgkx7yWIKcrbA9KMHkGSfcgxW2lsjHT6B8Sh The top of my mitigation tube by my roofline was just a 90 elbow which allowed too much debris to fall down into the fan, eventually ruining it. Without this issue, I bet it would have kept running another 10 years. When I replaced this fan, I added an extra elbow joint so the top tube now it does a 180, which should solve that problem. The radon guys around here wanted to charge me a $300 diagnostic fee, then parts/labor (probably close to $600 total). I installed this all by myself in about an hour for the cost of the fan; it would probably be even easier/faster with two people. FYI the manufacturer's warranty greatly differs depending on whether you install it yourself (1 yr warranty) or have a licensed installer do it (10 yrs).

Helpful video, thanks! I have the 240A and noticed that my cold water is now coming out hot for about 45 seconds, presumably it has something to do with the recirc setup. Any idea how to fix it other than to turn off recirculation? Thanks!

My model Number NPE240A2

Gee, i really hoped it will tell us how to set up switches inside the water heater for external circ pump

Very concise & professional!! 👀🦾

Thanks. This video helped me change the Condensate trap's O-ring on my heater that has outlived its warranty.

Im assuming the check valve is pointing into cold water inlet?

Is the service port on the recirc to flush out the recirc pump? If so, how do you do that? I think that was left out of the video.

The dip switches here are not shown correctly for the newer models. The first thing I did was check and there is no bank of 10 or anything like that so I guess the newer models have a different setup? All I saw on the side was 2 lone dip switches

40yr plumber here. Just been hired to find out why the other company that installed a 240A2 last week cannot get the recirculating system to work even after installing the navicirc. Knowing nothing about these systems I started doing research and you were my first stop. After watching the video, I got money that says this is my last stop as well and the answer has been solved :) Great job guys! Love the fast talking. However I can’t wrap my brain around the first method of recirculating, what good is a pump that has no line to recirc with? Guessing that terminology is being used, but in essence it’s not a true circulation but nothing more than a small holding tank always hot to prevent lag. So it’s really a lag prevention, not a Recirculation system :)

By Navient if you want to replace them in 10 years with a whole bunch of replacement parts over those 10 years they are complete and utter junk. Typical Korean products no good.

Can going above 140 deg cause damage to water heater or pipes?

Hi, Aaron:I'm an IT programmer, not handy man type like you! I bought a new house and they installed a navien 240A tankless hot water heater. Thanks for your video. I think will hire a prof plumber to clean/inspect/flush the hotwater for me. Thank you!

What is the procedure to flush the recirculation tank.

Voiding the warranty because of self-clean-up does not make any sense! I bet any homeowner who does self-service to their water heaters will be much more careful and thorough than any contractor.

Does this work in all NPE models? Would it works on a NPE-240S2

Leaning toward Navien after 13 years with Baxi

The best, most comprehensive explanation of the "cold sandwich" phenomenon that I have heard ! Excellent !

The Navian provides good service and appears to have good capability. However the Navian literature isn’t clear and the contractors only know default setups. I’m attempting to use the Navian Hot Buttons and the contractor don’t know how and the factory tech support is reluctant to assist me. Had I known what a joke the Navian service policy is I would never have bought it.

And how do you flush the recirc system?

I'm debating on having a Navien npe-240a2 installed is this a good unit for a 2800 sq ft 2 story house with 3 bathrooms? Does one need to run a condensing drain pipe? How often and expensive should they be serviced? Do these require flushing valves? Also looking at the Bosh Greentherm T 9900 SE 199NG. Which is better and going to last longer?