Only 19 left in stock - order soon. It does save you water but it also costs you a bit of electricity. The cold water inlet one thermistor is defective. Turns out, make sure you isolate the recirculation pump from the vibration. I obviously dont know much about this but the plumber is giving reasons that feel like he is making up dont make sense to me: 1. Turn the unit off. The short answer is no, your water will still be pure. You will not get hot water instantly. However, the plumber branched this off into the circulation water inlet. Many systems turn on and off automatically to keep the water within a specified temperature range. We have one faucet in the kitchen that has instant scalding hot water the second you turn it on . Then, turn it on again. The upfront cost is a major deterrent when deciding if it makes sense to install a circulation pump or not. This may require chasing the supply lines. Open the hot and cold service ports and turn the pump on. sounds like you need a different plumber to assess your situation. I connected the Hot Button control board to the main PCB per the instructions. Take care! How To Turn Off A Water Recirculating Pump? Examine the thermistors condition and pump wiring connectors. Fits These Models Hi Mike, we think about water as hot vs. cold. The cold water pipe coming from the wall goes into the domestic water inlet on the tankless heater, as it should. It could be open or shorted. Go along the steps described below to set the recirculation settings. This serves two functions: You save water. Hi Patrick, thats a good insight. T = the water cooling, normally 5 C determined at the farthest consumption point [C]. You can turn off the recirculating pump in various ways. Thats all for today. Low gas supply which prevents proper heating of water, Damaged flow sensor preventing proper supply of gas to the heater. Where does this (supposedly) Gibson quote come from? Open the service port on the host side and the isolation valve on the cold side, pushing water through the system. The remote control module sits beside this area (I have it floating but I'll put double stick tape and mount it to the interior soon) and the antenna lead drops through a grommet (conveniently already available at the bottom of the unit near the pcb) to the outside. Obviously, everybody loves immediate hot water from their faucets but this luxury can be quite expensive. Create an account to follow your favorite communities and start taking part in conversations. There are no error codes showing. It would be nice to get the hot water to the faucet especially the shower in the morning as quickly as possible. It means there is some issue with a water pressure sensor. Second, you can use a flex connector to isolate the pump. A hot water recirculation pump can be sized for a given system using the following formulas: Water flow qc = /T x 4200 10.6 Maintenance 10.7.3 NPE-180A/240A Pump P-Q Curve The Navien NPE-180A and NPE-240A water heaters that are used . This may temporarily help to remedy the issue. Examine and wash the intake air filter underneath running water using a toothbrush. I used a razor and carefully pried each side of the RM11 open to reach the programming switch. These processes are so easy that you can even install a water recirculating pump by yourself! This is the system you can see in the photos above. This made me suspicious that water was coming from the mains. Confirm the thermistor and wiring is in good condition. You dont have to install an additional pipe. In his spare time, Oscar loves tinkering with electronics. Step 1 Remove the plug from the socket on the end of the wire that connects to your circulator pump. 2. How do hot water recirculation pumps work to get hot water fast? Our goal here at GridSub is to help you find viable solutions to different off-grid problems. We always take the pros vs. cons approach because nothing is perfect. Not only that, by now you should know how to turn it off and why its important to do so. It shows that the water adjustment valve is not operating properly. Disconnect the power supply to the water heater. Then, you can change the tank thermistor if needed. Check to see if the warranty is still valid and contact the manufacturer. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. https://www.ebay.com/itm/12V-DC-MOMONTROL-RM11-/350575987090?hash=item519ff50992, Navien NPE-240A2 External circulation question, Navien NPE-240A and HotButton - DIP switches and parameters, Flushing Navien 240A set up for external bypass, Navien NPE External Recirculation Confusion. How can this new ban on drag possibly be considered constitutional? Find products from Grundfos related to this subject. All you have is a crossover valve underneath a sink somewhere also when plumbed correctly, all of that will only function with proper dip switch settings, perimeter settings, which is Pacific per heater model. here are some problems that you may have to deal with in the future or have experienced already primarily found in older Navien heater models; Though not a common occurrence, it is still essential to know how to identify these issues. Why Its Important To Turn Off The Water Recirculating Pump? I am having issues with it ever since: water to certain places in my house seems to just stay warm (kitchen sink and master bathroom) unless I fully open the faucet all the way on hotand then still I have to wait a minute plus for the water to heat up. Lets hop in! Remove the intake filter and properly wash it using a brush beneath running water. Quite surprisingly for most homeowners, the biggest problem with this type of recirculation pump is getting cold water. Then, read the manual on Navien tankless water heater how to reset. He said he tied in both in the master bath and the kitchen but it seems if that were the case at a minimum they would have hot water quickly. Going off the grid sounds noble, satisfying and eco-friendly. Does anybody have any thoughts of what I should get checked out? What I imagined would happen is 3-4 seconds of cold and then super hot water that was just waiting for me from the recirculation. JavaScript is disabled. However, that shouldnt happen if you have turned the pump off. If your system displays this code, you need to confirm the water pressure is within good ranges. It should come out of the hot water port. Without the need for extra piping, this type of hot water circulation pump system also comes at a much lower cost. Grundfos small circulators are perfect as hot water recirculation pumps for commercial and domestic hot water applications. On the other hand, if you find no foreign stuff, ensure you purge the air out of the system. I may be able to correct this if I solve the mystery on where the dedicated return line might be. Free returns are available for the shipping address you chose. Plug n play (after removing front panel to access the plug). There are filters that prevent the sediment from entering the water flow. There are more options, for example- you can buy a wifi socket. Question: How is a water recirculating pump eco-friendly?Answer: The basic reason is, water recirculating pumps save water. This item: Navien 30010780B Circulation Pump. If any particular ad is your REASON for blocking ads, please let us know. FREE Returns . If the external recirc is set up without this it will just run, defeating the purpose of hot water on demand. Brand: Navien. Those are quite significant savings. I guess the recirculation line will be the only one that is copper. Can this be moved to another sink in the house that is not used as often ? Is the plumbers reasoning valid here? Carbon monoxide (CO) is a tasteless, colorless, odorless, and highly poisonous gas which can be deadly to humans in high concentrations. Having a tankless water heater is an energy-efficient way of getting hot water. It is brand new in the original Navien factory packaging and is guaranteed to fit and function properly. There is some issue with the front panel key. Others run on a timer. Did any DOS compatibility layers exist for any UNIX-like systems before DOS started to become outmoded? Do we keep the flames on after cooking? if you do have an external recirc line BUT it was installed when the Navien , then see if you can find where the recirc line connects to the hot water line - maybe it's serving a portion of your fixtures and the other fixtures are not benefiting from the recirculation. It also may be as simple as a dip switch in the tankless unit itself. That means that this household wasted 8 gallons of water per day just waiting for hot water. So you'll find the same info whether you're looking for the Navien 240A manual, the Navien NPE-240S manual, Navien NPE-180A manual or similar. The cost of a separate recirculation pump would fall in the range of $200 and $500, depending on the size required. When the water is sufficiently hot, the temperature sensor will shut off the power to the recirculation pump to conserve energy. Once the display stops flashing, the temperature setting is stored. Not really. W2 Wire Thermostat Wiring (2nd Stage), Thermostat Wire Color Codes For 3-8 Wire Thermostats (Color-By-Color), How Many Therms Of Gas Per Month Is Normal? Worst case is your plumber might have to call since they require them to maintain it. Hopefully its clear which is which when Im down there. If the issue persists, contact your original installer or an NSS to service the sensor. Note: Remember to turn off power to the heater before replacing the gasket. Ask Your Own HVAC Question b55db6.jpeg 6a7761.jpeg ee4ed0.jpeg cc7ba2.jpeg 8ec6a3.jpeg 32aa59.jpeg However, the unit comes equipped with a standard 120V appliance cord and operates between 200 and 300 watts. Manage Settings The function of a recirculating pump is to ensure that hot water is always available as close to the consumption point as possible, in order to reduce water waste and to increase comfort. Navien Recirculation Pump Noise [4 Easy Solutions], 02. Here are some of the leading causes of cold water production; Which means there isnt enough time for the water to heat up. At the same time, someone is in the kitchen doing the dishes. Air in the line: If there has been a power outage or air has gotten into the line for another reason, the pump can make a lot of noise. Question: How much does it cost to buy a water recirculating pump? The water heater will retain your settings during a power outage. Then replace the heater cover and turn the gas or power back on. Watt recirculating pump installed on the water heater (pump plugged into standard 110/120V outlet, 3/4-inch pipe thread connectors, valve). Cookie Notice To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. Examine and confirm the pressure sensor and wiring are in good condition. Then what are we waiting for? This Navien 30010780C Circulation Pump for NPE Series is a genuine OEM repair part. Therefore, the only task you can attempt on this list is the gasket replacement for the leaking water connection. Is there a check valve? Both options use less energy than a continuously-running system. Open the pressure relief valve. Continue reading below Our Video of the Day 1. Where is the 2 internal drain valve in Navien 240a tankless water heater (damaged needs replacement), Shower gradually cools, gets hotter when sink is on. I recommend you disassemble the recirculation pump from the unit and inspect it carefully for foreign materials. This on-demand water heater has a lower carbon footprint, is energy efficient, and has a longer lifespan. $257.16. Also, check if the electrical cord is grounded correctly or not. The E760 informs you that its time to flush your heater. The buffer tank eliminates the "cold water sandwich" effect and issues of minimum flow rates commonly found in other tankless water heaters. Is this incorrectly installed? You need to run white vinegar through the system, to descale the water heater. Besides, the E782 indicates that there is something wrong with the main panel communication. On-Demand Mode. Overusing your recirculating pump also increases your electricity bill. SEER = (1 EER100% + 42 EER75% + 45 EER50% + 12 EER25%)/100, Total Heat (BTU/hr.) As a result, the stuff will rub against the wall of the pump and produce a hum like a refrigerator when you turn the unit on. Making statements based on opinion; back them up with references or personal experience. Error Code E438 It means the circulation pump is not working correctly. my understanding of the Navien with internal recirc pump is that they work with either an external dedicated return pipe or an internal bypass loop located within the water heater cabinet. From the valve, try to loosen up the cap to remove air from the system. I bought the. It only takes a minute to sign up. A water recirculating pump is also similar to this. Unscrew the plug cover with a suitable screwdriver to remove it. Press the Power button on the front panel to turn on the water heater. If we dont use it, we waste a lot of water. What effect does this have on gas usage for instant hot water? If any of them are loose or disconnected, your circulator pump won't work. It can occur due to an open or short sensor. They are not without upfront costs or disadvantages, but they do offer the luxury of having hot water almost instantaneously and they save you a lot of water. He says both the master bath and the kitchen. I'm fairly handy with DIY plumbing, but not and expert and I know when I am out of my league. Does the thing have a 'vacation' mode? Circulation pumps can wreck havoc on your lines if you run them constantly due to friction at bends causing pinhole leaks. The large valves should be in the off position, whereas the service valves should be in the on place. This serves two functions: This is also true for tankless water heaters. Both types of systems have similar pros and cons. The leading causes of the intermittent flame; You can fix these issues by maintaining and cleaning the heater. Check if there is any gas leakage before turning it on after a couple of days. It has a timer that turns on the pump at regular intervals, mostly during peak usage times. The circulation return needs to come from a loop at an end of the hot supply line. Close the isolation valves to the cold-supply and recirculation lines. However, if you want hot water fast, these on-demand heaters are not ideal. Also, make sure you get the 1- pipe for the horizontal manifold, which will help even out the flow of the recirculators. Turns out that it was the temperature of the return water was high enough to stop the recirculation. Locate the reset button on the heaters front control panel. Make sure the electrical cord is grounded. Press the + (Up) or (Down) buttons until the desired temperature appears on display. Putting one recirc line in won't turn a line and branch system into a loop system automatically. Press J to jump to the feed. These on-demand units need an even longer time for the hot water to reach a faucet because the heater has to first heat the water and then send it along to the faucet. (42-167 Amps), How Much Propane Does A Tankless Water Heater Use? Weve tried to include every concern you might have regarding turning off the water recirculating pump. Check the wiring and cold water inlet two thermistors and make sure both are in good condition. Thanks for contributing an answer to Home Improvement Stack Exchange! Normally uncontrolled pumps are used as the flow variation is relatively small. Your question, can I turn off my hot water pump? has been answered. It means that there is an issue with the air pressure sensor. Now, you have to know the hows for reducing damage. 3. If the problem persists after reset, replace the APS as soon as possible. Navien NPE-240s with external recirculating pump. We trusted him and thought everything was just fine as we were getting hot water throughout the house. The E615 tells you about the irregularity in input and memory. Ensure you mount the pump securely. Video of the Day Step 2 Check the three wires are connected to the plug terminals. Do new devs get fired if they can't solve a certain bug? Examine the controllers condition and replace it if required. When attempting a flush of the system, I shut off the hot and cold valves that lead into the heater. But it will be best if you contact a certified plumber to fix this issue. link to Why Does My RV Carbon Monoxide Detector Keep Going Off? It means the circulation pump is not working correctly. Press the Power button on the front panel to turn off the water heater. Make sure to follow the required instructions before and after youve turned it off for your safety. It may not display this or other websites correctly. If it does, you could trigger the operation to save money whenever your system detected 'away' or however you've got it programmed. Is this correct for the function of the system? IF it does, could it be controlled remotely? Well tackle the installation and running costs of a circulating pump in full near the end. Get in touch with Navien technical support at 800-519-8794. This propels the water to your faucet or shower much quicker. First, place a thick rubber between the pump and anything it will be mounted on. Your Navien Recirculation Pump will make a humming noise like a refrigerator if you dont bleed the air out of the recirculation system. If you'd like to support the site, please allow ads. He obtained his Bachelor of Science degree from the University Of Texas at El Paso. Is this a common drawback with the under-sink crossover valves, for the heater to turn on when a cold water faucet is turn on? What Is the Difference Between 'Man' And 'Son of Man' in Num 23:19? Turn off the device for 30 minutes and then restart it. He has a good standing reputation for superior skills in heating, air conditioning, hot water tanks, and indoor air quality systems. Otherwise, turn it off. You must log in or register to reply here. This gives you a negative return on investment (ROI), so. qc = the circulating water flow [m3/s] Get in touch with Navien technical support or a professional heater repairman. The recirculation timer is set to operate ever 15 minutes, even though we are often not at the property. We can go from there with up to 3 hours of dedicated live coaching on the telephone if needed. Solar panels, wiring, old TVs and sometimes DIY powerwalls. When you operated the hot water tap the last time you needed it, the water shuts off as soon as you turn off the tap. However, some gas needs to be used to heat water for the pump to circulate; the gas usage for this is pretty much insignificant relative to how much gas we use when powering the instant hot water heater. If the problem does not get resolved, replace the motherboard or control board or hire a professional t do it. You can adjust the temperature while the display is flashing. However, this is only a temporary fix. It shows that the heating return thermistor is not working correctly. The plumber said that he tied in both in the master bathroom and the kitchen but Ill crawl under the house to validate this. I am wondering if you have a Navilink and if you by any chance went in like I did and clicked the "disable/enable button" and turned off the schedules, I did change that - thinking it was a glitch that on first launch "enable" was showing. Remove the inlet filter and wash it under the running water with the help of a brush. While you may have a general understanding of the listed electrical issue above, you should not attempt to handle any electrical work unless you are a licensed electrician. However, the hot water had to travel from your water heater to the faucet for you to use. You need a check valve on the cold inlet 3/4 pipe also from the looks of the picture, you do not have a true designated recirculation line from your furnace fixture. Is there the same solution for NR240A? Ensure all return and supply lines are open and check the 2-way valves direction. The answer is that leftover water in the pipes has cooled over time. Eric Alvarez is an HVAC guy based in El Paso, Texas, United States. This is because the sensors are corroded over time which causes them to shut the heater down. I agree the user manuals are very helpful. Remove the front cover of the water heater. We hope we were able to help you out with our guide. Do not advertise or try to compare pricing. An example of data being processed may be a unique identifier stored in a cookie. Now, when installed, the recirculating pump makes it seem that the hot water starts flowing right away like magic. These are the kinds of issues that can occur if you aren't aware of the automatic appliances that are connected to your system (and don't shut them off along with the water). Recirculate temp in is 67, temp out when just recirculating is 67. Hi Christopher, not really. . The pump saves this cold water and recirculates it in the hot water. House was built in late 1990s and is 2 story, built on a slab foundation. Here are some simple instructions on how to turn on your Navien tankless water heater. That's an interesting solution. To remedy this, you can take the two clamps off the sensor, pull it out and clean it. Older Navien heater models are prone to flow sensor issues. You can contact a plumber if necessary. First, open and close the pressure relief valve, which is located near the units outlet. Let's hop in! You also have to flush the heat exchanger. The process to take apart the fitting which holds the flow sensor to "blow" it out clean is arduous, requiring drainage of the system etc., and has not solved the problem. Thanks. There are special tankless water heater recirculation pumps for Navien, Rinnai, and Rheem units; we will cover them all. Place a bucket underneath it to catch any water that drains when you remove the filter. (+ Calculator), 5 Best Air Purifiers For Allergies In 2023 (+ H13 Medical-Grade HEPA Filters), Is A Tankless Water Heater Worth It? Ask an Expert Home Improvement Questions HVAC Questions Navien NPE-240s with external recirculating pump. When building a house, its smart to think about hot water recirculation as well. Recirculation Settings by pressing down the OK button. The exhaust thermostat is malfunctioning. 2 Types Of Hot Water Recirculation Pumps Used In Homes, Type 2: Recirculating Home Pump Comfort System, Advantages And Disadvantages Of Hot Water Recirculation Pumps, How Much Do Hot Water Circulation Pumps Cost + Installation Cost + Running Cost? Nobody really likes waiting for the hot water to start flowing under the shower or doing the dishes, for example. Contents show Some sort of noise out of your Navien recirculation pump is normal. After draining a few hot water tanks over the years, removing sediment, will the cold water now possibly have some sediment and/or taste issues. Side question: are you able to explain to me what always on means? Reassemble the heater and turn on the hot and cold water valves. Fortunately, Navien water heaters recycle hot water and always provide hot water. If you look at the instructions, which tech support emailed to me, there is a Signal 1 input for 12 or 5V devices including remote controls or motion sensors BTW the other remote was sold out. Therefore, when it malfunctions, it is a sign that the heater has another major underlying issue. The air will need to be bled out of the system. You just have to set the timer as you use it. But, making sure youre doing it the right way is important. The DIP switch setting has some problems. It worked perfectly. First, find the control panel on the front of the unit. This is done every time you close the faucet. Years of experience in the HVAC field have taught him many lessons, not the least of which is that the value of quality and knowledge far exceeds any promised initial savings. they have an accessory called the HotButton (PZZZ-00046). The main sign of motherboard or control board failure is intermittent switching off and on. Do you want to know the details? Heres the thing: Both cold and hot water need to be supplied using the same pipe. Are these pumps just a luxury that enables you to get hot water lightning fast, or do they actually save you money? You are using an out of date browser. All you have to know is how to turn it off. I have alos checked my HeatBox settings to ensure the temp is set high enough for my domestic supply (set to around 120 degrees). Recirculation 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. Also, check the feeder valve and pressure relief valves activity. Legal Disclosure:Lildutchuncle.com provides and shares information on plumbing, heating & air quality, home improvement, and other DIY projects. Turning off your water recirculating pump reduces damage. Tankless Water Heater Wire Size Calculator: What Gauge Wire (AWG)? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. - If there is not the fore mentioned set up he probably did the best he could do without re plumbing your house with double hot (returns to your Navien! Thats kind of why the water heater still has to do some work (it turns on); its not a lot of heating but some heating is usually required. Thanks for confirming and letting me know about the potential damage to the circulating pump as that hadn't occurred to me. Unplug the power to your Navien water heater. When attempting a flush of the system, I shut off the hot and cold valves that lead into the heater. Hi: where does the recirc line tie come off the hot lines? Costs associated with hot water circulation pumps (parts + installation + DIY savings). To reduce that time significantly (and stop needlessly wasting water), we can install hot water recirculating pump. To change the water temperature; Check this too: Richmond Water Heater How to & Troubleshooting Guide. Any thoughts on that? Difficulties with estimation of epsilon-delta limit proof. Then remove the cold water filter off located next to the cold water isolation valve. Connect a regular garden hose to the hot side service valve. Here are the leading causes of strange noises coming from your heater; Hire a professional or installer to repair your heater to avoid damaging the heater and voiding your warranty. Ensure that all hot water faucets are closed, and ensure that the internal circulator and any external circulating pumps are off. Tankless Water Heater Breaker Size Calculator: What Size Breaker? That install is exactly as specified in the newer manuals. air). That means that the cold water is not actually cold; it will usually be slightly warm (at room temperature). 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. Navien tankless water heater recirculation March 31, 2016 At the push of a button, Navien 's HotButton accessory activates the internal recirculation pump and gas-fired burner to heat up the water in the supply lines. But, you can buy a new recirculating pump for $200-400. A recirculation system is a hot water line that runs throughout the house and returns back to the water heater. Is this correct for the function of the system? Make sure the exhaust pipe is not obstructed. Then, use the arrows to set the desired temperature. If you are unsure of whether the recirculation pump was correctly installed, contact Navien technical center or the NSS agent who installed the heater. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. There are two options when it comes to tankless heaters and recirculation pumps: If you have difficulty finding out which brand is the best for a tankless water heater with a recirculation pump, you should check the newest Navien, Rinnai, and Rheem units. Yes, you can turn off your hot water recirculating pump.
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