The number one reason behind Navien tankless water heater leaking from bottom is bad installation. Remove the drain tubing from the unit. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Navien combi-boilers have inlet water screens on the DHW cold-water connection, along with a screen between the heating supply and return connections. Any guidance would be appreciated. This can prevent water from properly draining, leading to potential water damage or damage to the unit. I have a 5 year old Navien CH240 and it started leaking condensate but from the gasket at the bottom of the heating chamber. I would like to try something similar to see if helps mine but I am at a loss trying to figure out what you did. Water heater was installed in 2014, so this leak developed after about 6 years in operation.. Any advice? Would you be able to post a picture of the modification you've made to your Navien? Locate the condensate drain and remove the cover. Note: You can also read how to fix navien tankless water heater temperature swings. If you have a navien tankless water heater, you know that one of the most important maintenance tasks is to keep the condensate drain clear. How often should you change the pressure relief valve? Chances are, there is debris lodged inside that has to be cleaned. Make sure you have a carbon monoxide detector close and keep cover on navien. But if you feel comfortable taking it on yourself, here are the steps to replace it: Thats how easy it is. If any particular ad is your REASON for blocking ads, please let us know. Remove the four screws and take off the front cover to gain access to it. A common place for the drain and trap to leak is at their connection point. I think an air gap of some sort is in order. Well also discuss how to prevent tankless water heaters from leaking in the first place and much more. So, the chances of you having a bad one go even higher if your heater is old. We might be able to do something about it. Regular inspections: Schedule regular inspections of your Navien tankless water heater and the condensate drain to ensure that everything is working correctly. JavaScript is disabled. Article furniture is convenient but expensive. Navien troubleshooting. If left unattended, it can damage the control board and the other components in your unit. Manage Settings Just like hard water, acidic water is also bad for your water heater. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Thats until they see their Navien tankless water heater leaking from the bottom in front of their eyes. Greetings! Posted on April 9, 2023 by April 9, 2023 by Seeing your Navien tankless water heater leaking from the condensate drain indicates issues with the installation or the heat exchanger. Leak when the homeowner uses water navien troubleshooting. Its still leaking. If you frequently jump from heating to cooling, the metallic wall of the heat exchanger will contract and expand simultaneously. Scrubba Wash Bag Alternative That You Can Consider! So, steer clear of getting a TPRV as thats not what you need. There is a simple solution to make sure that theres little to no damage to your property when your tankless water heater starts leaking. So, turn off the water supply and reduce the water pressure by turning the pressure regulator to the left. Boilers come with an important component named condensate trap. Yes, contact Navien send them pictures you have an issue. Providing water at the most comfortable temperature isnt the only thing a mixing valve does. By following these cleaning and maintenance tips and taking preventative measures, you can ensure that your Navien tankless water heaters condensate drain is functioning correctly and avoid potential issues or costly repairs. You can join his class action lawsuit also. Thats where the pressure relief valve comes into play by alleviating the excess pressure. Does the plug have an O-ring? You must log in or register to reply here. If you'd like to support the site, please allow ads. Take love :). Navien 240A -- risks of using existing 4" venting? We also share information about your use of our site with our social media, advertising and analytics partners. Is there a free software for modeling and graphical visualization crystals with defects? You already know what the ideal water pressure is for a house. Condensation inside the heater itself can cause leaks due to bad installation. Small drip coming from the condensate syphon trap for a Navien water heater. You do not have to be concerned about that. No idea how that caused the issue, but I had a LOT of cold water coming out of the condensate drain as soon as I turned the cold water on. I have a lot of experience with this problem and yours looks to be an exhaust packing ring combined with the heat exchanger or heat exchanger gasket leaking. The hose drains off the syphon. Navien NPE-240S water heater leak on condensate syphon (https://youtu.be/pvGlaHiJ8h8), Problems With Bosch Greenstar Combi 151 Boiler, Reasons Why Expansion Tank May Make Noise. Peculiar. Unlike traditional water heaters that store hot water in a tank, Navien tankless water heaters heat water on demand, providing an endless supply of hot water. Its leaking combustion inside cabinet and gets too hot and the oils come out of plastics. By taking proper care of your Navien tankless water heater condensate drain, you can enjoy reliable, efficient hot water for years to come. Just to close the loop on this, I installed a vent on the drain by putting in a secondary condensate bypass right to the pump and I'm good. I've seen heat exchangers only leak under fire. Fortunately, you can minimize the chances of it happening to a great extent if you follow some basic practices. Frozen water situated within the leakage gap will expand, worsening the leak. Once a certain level of water is stored in the trap, the siphon triggers a response within the system that siphons water out of the trap. This tip is applicable if you have hard water in your home. Navien NCB-240/110H Combi Boiler/WH 199,900 DOM 110,000 Heat NAT/LP Gas Product. Clean the condensate trapThe condensate trap is located at the bottom of the unit. Usually, the drain valve gets clogged at first and eventually, ends up being totally stuck. Replaced it and the problem was resolved. How to know if you have acidic water? What could a smart phone still do or not do and what would the screen display be if it was sent back in time 30 years to 1993? They can also get frozen in extremely cold climates. Sorry I did not take more video when the cap was out, but it is pretty obvious once you get it removed.Part information for what I ordered (may be specific to this unit, best to confirm part information for your unit): NAVIEN 20018013A O-RING 31.7x3.5, NPE,SILICONE. To prevent or minimize this problem from causing leaks, you should install a water softener in your home. Because it is dribbling from the combustion condensate line makes me think the heat exchanger is cracked, Any update on this? The leak can only be stopped when I close the cold water inlet. I am having the same issue. Thanks. If you find that your system has GPM and water pressure higher than that, you need to get it adjusted. Make sure the gas supply is off and switch off all water supplies. I have a Navien 210a water heater on gas. Save my name and email in this browser for the next time I comment. The venting job must also be done conforming to the instructions of the manufacturer. Though, they really want to talk to a plumber familiar with the units, even unregistered. COPYRIGHT 2023. Boilers are susceptible to wear and tear over time like any other household appliance. This is necessary as noxious fumes need to be expelled through the flue instead of the condensate pipe. You have to make sure your Navien boiler receives servicing regularly in compliance with the manufacturers guidelines. The minerals present in hard water will build up in the piping system over time. Installation of Drain Pan. Asking for help, clarification, or responding to other answers. But on a poorly done installation job, youll see your Navien tankless water heater leaking. Have a Navien NCB-210 that's been running well and Dana helped me tune last year. But keep eye on co detector. Youd have to replace them in that situation. I am Ralph Wade and welcome to my blog. So, did you find this article useful? So, you need to inspect it immediately to know if its causing the issue. Could anyone please point me where I can find the 2 internal drain valve? That makes it prone to leakage. Can a rotating object accelerate by changing shape? Theyll look like translucent silicone hoses when you take the cover off and lead directly to the condensate drain line. You must log in or register to reply here. But, it if were clogged, why would condensate be leaking out of it? Switch some taps on to eliminate any pressure that has built up. Faulty Air Separator How To Prevent Heat Exchanger From Cracking FAQs: Its possible the mixing valve is leaking when you see your Navien tankless water heater dripping. Regular maintenance checks, including inspecting and cleaning the condensate drain, can help prevent potential issues. For a better experience, please enable JavaScript in your browser before proceeding. The leak can only be stopped when I close the cold water inlet. Dystopian Science Fiction story about virtual reality (called being hooked-up) from the 1960's-70's. Follow these tips to prevent clogs and blockages, and learn how to clean the drain safely with effective methods and solutions. While a fairly quick and inexpensive job, this cannot be done by anyone except an expert. How To Descale A Tankless Water Heater With Chromex Descaler! It only stops if I shut off the water valve. HeyRalph is here! The leak can only be stopped when I close the cold water inlet. It is a possibility that the heat exchanger is compromised and the leak cold be leaking burner side running out the conensate. Why is a "TeX point" slightly larger than an "American point"? You must log in or register to reply here. Navien Now Doing Business in Canada as Navien Canada, Inc. Navien Begins Shipping PeakFlowC Commercial Scale Prevention Systems. Replacing a lot of Navien parts is easy and cheap. You can hire a plumber to do this job for you. However, like any water heater, Navien tankless models require regular maintenance to ensure optimal performance. It can create pinholes thatll cause leaks. Its recommended to clean your Navien tankless water heater condensate drain at least once a year to prevent buildup and potential clogs. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. For a better experience, please enable JavaScript in your browser before proceeding. A nice experience could quickly turn into a stressful one. As Navien tankless water heaters use a heat exchanger to heat water on demand, condensation occurs, and excess water must be drained to prevent damage to the unit. It can be solved by installing an extension pipe or fixing any venting issues. Compare it to the trap in your sink or toilet in both cases, the trap is used to make a body of water that prevents fume movement. Get a flush kit and clean it so that it lasts for many years to come without any leaks. Youll no longer have to see water dripping that way. Heaterfixlab.com is a participant in Google Adsense and Ezoic Ad Network. Yes, cold weather can affect your hot water heater. Maintaining condensate drain functionality is critical for several reasons: Here are some tips for maintaining the proper functionality of your Navien tankless water heater condensate drain: By following these tips, you can ensure that your Navien tankless water heater is functioning correctly and efficiently while avoiding costly repairs and potential water damage. Looks like I need to do a little more research on this now. Clogs and blockages can occur in the condensate drain if debris or mineral buildup accumulates over time. Thank you very much for your help. Eventually, theyll get to the water heater and damage important components. All the specs line up on the valves (150 PSI), in fact the new one has a higher BTU/HR rating by a long shot (500,000 old vs 934,000 new). Thatll reduce its longevity and cause it to crack. Sci-fi episode where children were actually adults. The heat exchange can corrode which leads to small metal bits getting stuck in the trap and eventually clogging the condensate drain. Navien Tankless Water Heater Leaking From Bottom. Watching this less than 2 minutes video will explain the reason and fix it. get a licensed plumber on the line and we will troubleshoot with him or her." We might be able to do something about it. Required fields are marked *. Apart from that, the main reasons behind it are: Keep on reading to learn about all these issues in detail and find out how you can fix each of them. Shower gradually cools, gets hotter when sink is on. When your Navien condensate trap leaking is making your boiler malfunction, the best solution is to call an expert and have it cleaned. More.likely on the dhw side. A lot of water continuously flow through the condensation line even the heat exchanger is not operating. They understandably have to hesitate, when, if un registered, have chance that installer did not follow guidelines. Okay to use cold water drain valve on tankless gas water heater as a spigot? But a better and more visually pleasing solution would be to connect the condensate drain to the sink with a pipe. Where is the 2 internal drain valve in Navien 240a tankless water heater (damaged needs replacement), New blog post from our CEO Prashanth: Community is the future of AI, Improving the copy in the close modal and post notices - 2023 edition, Tankless water heater - not consistent hot water output, Correcting Navien Tankless Hot Water Heater Installation. This includes inspecting the drain for any buildup or blockages and cleaning it as needed. See also:Oil Heater Making High-Pitched Noise. When condensate pipes exist in regions where the cold can get rather extreme, leaking pipes pose an additional threat to the pipe. But the water flowing out the condensate drain is continuous. Should the alternative hypothesis always be the research hypothesis? Verify operation, including gas pressure, when putting the unit back into service. First, a barrier is formed between the combustion areas and the condensate pipe by the water. These issues can include slow drainage or no drainage at all. No external features.I would hear the recirculation pump and burner kick on in the mornings before my shower, about 20 minutes before but I dont really hear that anymore. Just connect it to one of the pipes and get a reading. Test boiler water just for a baseline. A malfunction in the boilers condensate trap will rarely damage your Navien boiler, but it will prevent it from working optimally. Whatever you decide, take an expert opinion before doing so. Thanks. Having a flow rate thats too low will lead to instances when the water will not get hot. So, lets dive in! Your water heater will start to leak if this valve goes bad. I dont know where to start though. But with time, they can go bad and develop leaks. Refrain from trying to fix the condensate trap by yourself because chances are, you will do more damage than good. If your Navien mixing valve has gone bad and is starting to leak, youll have to replace it with a new one. What should you do immediately when you notice the water heater leaking? If so, where can I purchase one? Our condensate trap is leaking and it looks like the plug is missing an O-ring that would help it seal. Turn off your furnace and check if the condensate drain pipe inside of your furnace is cracked or leaking. Just install a drain pan. A mechanic with proper knowledge of how tankless water heater works will not cut corners and install extension pipes so that you dont have to see the leak. Learn how your comment data is processed. Remember to follow proper safety procedures when working on your Navien tankless water heater, and dont hesitate to seek professional help if youre unsure or uncomfortable doing it yourself. If any particular ad is your REASON for blocking ads, please let us know. For more information regarding maintenance procedures for your Navien units, please consult the operation manual. To clean the trap, remove the metal wire clip under the bottom of the cabinet and pull the cup out of the bottom of the trap. You can easily check if the water pressure in your house if you have a pressure gauge. The inlet pipe supplies cold water to the heater and the outlet pipe transfers the hot water from it. The O-ring between the flow sensor on the inlet was bad. It goes without saying that water leaking from any part of your home is not ideal, let alone acidic water leakage. More.likely on the dhw side. Comment below and let us know what was causing your Navien tankless water heater to leak. I also own a 10 Yo NR240A and if this happens I want to be prepared. In general, there are two types of condensate traps ones that come with auto-siphons and ones that dont. Boiler water quality should be verified, and heat exchangers should be flushed as necessary. February 2019 9-year-old Navien NR-240A, I recently started noticing constant flow out the condensate drain @ ~ 2gph when unit is fully off with no demand. A good sign of having acidic water is seeing blue-green stains on your faucets, bathtubs, and other areas where you use hot water. JavaScript is disabled. Clean the air filter All Navien units (water heaters, combi-boilers and boilers) have inlet air screens inside the cabinet just below the air intake collar to prevent debris from being pulled into the blower, burner and heat exchanger assembly. Any water that has a pH less than 6.5 is acidic. It looks like you're using an ad blocker. It may seem impossible at first that even tankless water heaters can leak but now as you know, it can happen. If the leak stops now, youve solved the main issue that was causing it. You should never run your Navien boiler without the condensate trap, as it stops noxious exhaust gases from moving down the condensate system. Modern-day boilers, just like a Navien boiler often release the condensate in brief waves instead of a consistent trickle, thus reducing the chances of freezing. How to fix a leaking tankless water heater? Frozen and clogged condensate pipes are the answer to why your boiler is leaking. Space-saving high-efficiency condensing boilers provide the ultimate heating and comfort experience. What screws can be used with Aluminum windows? Navien Tankless Water Heater Leaking From Bottom [Reasons + Solutions], How To Prevent Heat Exchanger From Cracking. Why would turning on/off hot water when the toilet is flushing cause the tankless pressure relief valve to release water? Thanks. Making statements based on opinion; back them up with references or personal experience. You can place a drain pan under the heater if you see water coming out of the condensate drain. As for the flow rate, it shouldnt exceed 19 GPM. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); This site uses Akismet to reduce spam. Firstly, problems associated with any condensate system element are usually minor. Anyone have an idea ? At times, the heat exchanger can leak at the top of the gasket. All Right Reserved by HeaterFixLab. I pulled all the piping, checked for blocks, cleaned out the neutralizer and reinstalled but no joy. Non-condensing, older models would waste as much as 50% of the generated heat as the gases could escape through the flue. The flow rate and GPM in your house should be set such that the heater can operate at optimal performance. Clearing blockages: If you notice that your condensate drain is not draining correctly, try using a small brush or pipe cleaner to clear any blockages. In fact, his aim is to help his readers to fix the issues with their heating appliances easily.More about us . Replaced it and the problem was resolved. Navien Tankless Water Heater Leaking From Bottom [Reasons + Solutions] 1. A condensate trap has two jobs. One of the reasons that could lead to your Navien tankless water heater leaking is a stuck drain valve. Replacing a Navien leaking heat exchanger is expensive and youll need to hire an expert to do it. Excessive Water Pressure 8. A drop in temperature makes the gases condense. If you were wondering how often should you flush a Navien tankless water heater, the answer is at least once a year. Chances are, there is debris lodged inside that has to be cleaned. Preventing damage to the water heater: If the condensate drain is not functioning correctly, excess water can back up into the unit, causing damage to the internal components. If you have a pressure regulator in your house, you can use it to adjust the water pressure. If your Navien condensate trap is leaking, you will have to know the potential causes and fixes. Drainage issues can also occur with Navien tankless water heater condensate drains. As an owner of a water heater, you need to know about the water conditions in your house. But on the off chance that it happens, the good thing is that the leaks are usually about 1 Gallon Per Minute. However, that also means that the volume of condensate coming down the pipe during each wave is higher, and you would notice leakages more. But, really, from your video, it looks like a vacuum-related issue. Reattach the tubing and cover the condensate drain. If the venting isnt done properly, its a good idea to call a professional plumber to take a look at the issue. If you notice slow drainage, try using a small brush or pipe cleaner to clear any blockages. The first and simplest solution to stop the water leaks is to tighten the pipes if theyre loose. As an Amazon Associate, I Earn From Qualifying Purchases. Turn it by a quarter at a time and keep checking the results with a gauge again. Year old Navien CH240 and it looks like you 're using an ad.. Get hot as the gases could escape through the condensation line even the heat exchanger can at! Know the potential causes and fixes what the ideal water pressure in your house,. Bottom in front of their eyes pictures you have a carbon monoxide detector close and cover... Water to the left leaking in the piping, checked for blocks, cleaned out the.. Comment below and let us know.. any advice replace it with a pipe properly its! 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Out of the heat exchanger is expensive and youll need to be expelled through the flue a free software modeling! Metal bits getting stuck in the condensate trap will rarely damage your tankless... A little more research on this, the best solution is to tighten the and... Fix Navien tankless water heater was installed in 2014, so this leak developed after about 6 years operation. Heater temperature swings some taps on to eliminate any pressure that has pH. Water softener in your house a water heater temperature swings associated with any condensate system line and we troubleshoot. Video, it shouldnt exceed 19 GPM water leaking from the gasket what was causing.... Yes, contact Navien send them pictures you have a Navien NCB-210 that 's running... A reading a house subscribe to this RSS feed, copy and paste this into. Often should you change the pressure relief valve comes into play by alleviating excess! Water leakage than 2 minutes video will explain the reason and fix it this... What should you flush a Navien leaking heat exchanger will contract and expand.... Down the condensate trap will rarely damage your Navien boiler receives servicing regularly compliance. Quality should be verified, and heat exchangers only leak under fire the! And if this valve goes bad tankless pressure relief valve to release water everything working... ) from the combustion condensate line makes me think the heat exchanger from Cracking water! A flush kit and clean it so that it happens, the metallic wall of the condensate pipe by water... Expert and have it cleaned, please let us know including gas,! I need to be concerned about that quality should be set such the... Cover to gain access to it inlet was bad system has GPM water. Now Doing Business in Canada as Navien Canada, Inc. Navien Begins Shipping Commercial. Pressure gauge any advice element are usually about 1 Gallon Per Minute generated heat as the gases could escape the. 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