If the problem persists, call a technician to fix the unit. Eliminate the requirement of minimum flow rate, Eliminate the cold water sandwich effect. I expect that would have some positive effect on the time to deliver hot water, even if it is small. WebNavien recirculation works by using a pump to send hot water from the water source to the farthest fixture, such as the shower, that results in one or two short waits until hot water arrives from a tap. My water is well water so I am assuming this is correct. WebNAVIEN TANKLESS WATER HEATER RECIRCULATION SET UP WITH DEDICATED RECIRCULATION LINE. Note the recirculation timer settings are divided in 30 minute increments. With the NPE-A2 units built-in pump, water circulates through the NaviCirc to preheat the hot water lines, using the cold supply line as the return line back to the water heater. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Check the wiring and cold water inlet two thermistors and make sure both are in good condition. Navien NaviCirc Recirculation Valve Description How it WebPage 1 Navien Condensing Water Heater Manual NR-180 (A) NP-180 (A) NR-210 (A) NP-210 (A) NR-240 (A) NP-240 (A) If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. I mounted the contact switch inside the cabinet per the kit instructions. Solution: You have to inspect the sensors connectors to confirm they are not wet and fixed correctly. The house is set up with recirculation, though I am not sure where in the house the "T" on the system is located. So, you must play with this setting and adjust it according to your water usage demand. We might be able to do something about it. An open or shorted sensor causes this issue. Eventually, I want to run a return line from the kitchen area back to the hot water heater and that should significantly reduce the delivery time, since all the faucets feed off the line that leads to the kitchen. I'm just wondering how long the The 180A is its smaller sibling while this is succeeded by the 240A. Legal Disclosure:Lildutchuncle.com provides and shares information on plumbing, heating & air quality, home improvement, and other DIY projects. Get in touch with Navien technical support at 800-519-8794. Every Navien Tankless Model, either 240A or 180A2, has two DIP switch locations. I could hear the water recirculating every so often. Therefore, when it malfunctions, it is a sign that the heater has another major underlying issue. You can adjust the temperature by the below 10-degree increments, depending on the temperature range: 98 F-120 F/ 36 C-50 C 1 F or 0.5 C increments, 120 F-140 F /50 C-60 C Press for 2 seconds to adjust in 5 F or 2C increments. Low gas supply which prevents proper heating of water, Damaged flow sensor preventing proper supply of gas to the heater. An open or short thermistor can be the root cause of this problem. Is that how this works? 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 presses it before taking a shower. Every A2 model On Navien Water Heaters, you can choose two pre-heating modes. The total amount of water needed is 2 gallons + 1.5 gallons + (3 gallons * length of shower). So, you must play with this setting and adjust it according to your water usage demand. However, we have had repeated issues with the heat level of our domestic water. This happens when you have a huge heater and lower gas output. In the software display settings, I've also set it to internal recirculation with the "Always On" option. Check to see if the warranty is still valid and contact the manufacturer. Resources | Partners Login | Become an NSS |Certifications |Parts List | Technical Support | Careers |Global Network |Warranty, All contents copyright Navien Inc. | About Navien |Contact Us | Terms of Use |Privacy Policy |CCPA |Notices, You accept the use of cookies as described in our, Designed and optimized for use with Navien NPE-A Series water heater models, Automatically blocks circulation when the hot water temperature within the valve is about 95F (35C), Compatible with the Navien HotButton Kit for demand-type recirculation systems, Ultra-high efficiency condensing tankless water heaters, High efficiency non-condensing tankless water heaters, Benefits of Tankless Water Heaters | Navien, Problem Solved: Gandy Installations Saves Customer Enough Space for a Refrigerator. Now, its time to describe how you can adjust the Switch-2. Shut off the appliance for half an hour and then restart. WebSimilar to the Navien NR-210A, the NR-240A is a tankless water heater with a built-in circulation pump and buffer tank, except that this model delivers 11 gallons per minute at 45oF rise. Press the reset button to reset your device. WebRecirculation valve for use with NPE-A series tankless water heaters Designed for recirculation of domestic hot water in applications where a dedicated return line is not available. WebSimilar to the Navien NR-210A, the NR-240A is a tankless water heater with a built-in circulation pump and buffer tank, except that this model delivers 11 gallons per minute at 45oF rise. You need a crossover valve installed under one of your faucets that is far away from the water heater (there are a few different styles but they all have four connections and get installed under a faucet). You need a crossover valve installed under one of your faucets that is far away from the water heater (there are a few different styles but they all have four connections and get installed under a faucet). WebPage 16: Setting The Recirculation Timer Setting the Recirculation timer Press the Timer button twice to set the Set the recirculation activation time by pressing Recirculation timer. I don't hear the heater "fire up" right away when the tap is opened and can't tell if the recirculation pump is running. If the problem does not get resolved, replace the motherboard or control board or hire a professional t do it. Having just run my own recirc lines and installing an NPE240A I can tell you that you dont want intelligent preheat. Generally, installers or plumbers set those DIP switches based on the installation environment. The filter is located at the top left of the water heater. Next, hook hoses to the valves, then open them to drain the water. I just had an NPE240A2 professionally installed last week. It will reduce the energy consumption and deliver you the best heating efficiency. Turn off the device for half an hour and confirm everything is working correctly. Can I swap out the mainboard in the NR240A to an NPE240A board to get all that features? How To Use Recirculation Mode On Navien Water Heater? Hi, I have a 2.5 year old Navien NPE-240A with an external recirculation device underneath my master bath sink (furthest fixture from the water heater), which would pretty much instantly provide hot water. Note the recirculation timer settings are divided in 30 minute increments. WebRecirculation valve for use with NPE-A series tankless water heaters Designed for recirculation of domestic hot water in applications where a dedicated return line is not available. Turns out, the recirculation mode has three performance advantages, including: Now, lets see how to adjust the recirculation mode in the next chapter so that you can enjoy the advantages I mentioned. Disconnect the power supply to the water heater. Press the OK button to set the deactivation time. 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 presses it before taking a shower. I added an additional remote for a total of 3. Examine and wash the intake air filter underneath running water using a toothbrush. Start by turning off the service valves and removing the hoses. Is the cable harness compatible? If necessary, replace them all. I discussed everything you need to know about the Navien 240A Dip Switch Settings. For example, it will boost up the energy consumption because the unit operates to maintain the water temperature within the circulation loop. The 180A is its smaller sibling while this is succeeded by the 240A. The NaviCirc recirculation valve works best if installed under the furthest accessible fixture away from the water heater. Each time I call Navien for help, they suggest my issue is related to debris getting into the flow sensor and preventing it from triggering properly. Adding a "Hot button" overrides schedulers (navilink or NR-20DU). I thank you for this post! The NPE-210A-LP is the mid-range model from Naviens NPE-A series where A stands for advanced. The enable/disable work around for a hot button really speaks to the fact that they could just make an app based digital hot button alone-- with a timer better yet to resume the normal schedule. WebNavien npe-240a settings We have a Navien NR-240A installed in new construction in 2012. Locate the reset button on the heaters front control panel. Thanks in advance for any advice. They control the entire functionality of your water heater. Understanding navien recirculating water heater ruralowner member posts: Source: circulationpumpitoshima.blogspot.com. Hi, I have a 2.5 year old Navien NPE-240A with an external recirculation device underneath my master bath sink (furthest fixture from the water heater), which would pretty much instantly provide hot water. An open or shorted sensor causes this issue. WebTankless water heaters CAN be used to help solve lag time issues on a home, eliminating most of the wait time for hot water, but it depends on the piping. Thanks. The error code E736 informs about the issue in cascade communication, and error code E740 indicates that the outdoor temperature sensor is not working correctly. My unit is a replacement for an existing electric tank recirc loop system. Locate the reset button on the heaters front control panel. Also, you do not set external For example, an open or shorted sensor causes this issue. Even on high flow faucets, like the shower in my master which has a very high pressure shower head, it takes longer for hot water to come in. Navien NaviCirc Recirculation Valve Description How it It generally controls the Temperature Lock. The 2-way valve inside the Navien is set to internal recirculation. a faucet is open) and no recirculation is occuring? The exhaust thermostat is malfunctioning. Also the unit needs to be set to utilize the recirculation feature. Then replace the heater cover and turn the gas or power back on. Also, check the feeder valve and pressure relief valves activity. To remedy the issue, consider increasing the gas supply to the heater. Recirculation is basically just keeping the hot water in the plumbing hot so you get hot water faster. You can find one on the PCB and the other one on the front panel. He obtained his Bachelor of Science degree from the University Of Texas at El Paso. You can change the tank thermistor if needed. Close the cold and hot water inlet valves and then drain the water heater. The leading causes of the intermittent flame; You can fix these issues by maintaining and cleaning the heater.

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