These processes are so easy that you can even install a water recirculating pump by yourself! Remove the screw that secures the air intake filter and then remove the filter. FREE Returns . We have a standard gas hot water heater with a circulating pump. A family of 4 with normal water usage can expect to save $50-$75 a year. This comprehensive guide helps to make the operation and repair of your heater easier. However, that shouldnt happen if you have turned the pump off. Cookie Notice 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. Allow it to dry and then fix it back. These are the 3 most often recommended brands for tankless water heaters with recirculation pumps. Hello Sam, you can shut off the recirculating pump to the kitchen faucet. The pump works on the existing pipes; it basically sends the leftover water back to the boiler or the heater. To remedy this issue, turn off the heater for some time and restart it. We do all the time-consuming research and testing for you. Not really. As well as any future additions, Usage of household gadgets that require hot water, Automatic dishwasher 14 gallons or 1.5 GPM, Washing machine 32 gallons to wash the clothes or 2 GPM. When its time to work with a recirculating pump, you should follow some instructions to avoid further hassles. It could be open or shorted. This is done every time you close the faucet. 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. Some brands/models dont include it. It may not display this or other websites correctly. There are several ways to do it. Though we share resources, information, and educational guide on plumbing & DIY projects, the content here is not a substitute for professional guidance. Nobody really likes waiting for the hot water to start flowing under the shower or doing the dishes, for example. That may present a problem in the summer when you need cold water; turning the pump off during the summer months solves the problem. Of course, the most important part is the pump itself, so well start with that: These are the standard building blocks of every recirculation pump for getting hot water quickly. Make sure the electrical cord is grounded. Lets hop in! Water recirculating pumps just circulate the water; the water pressure should stay the same. So, there is such a thing. For moving the pump to another sink, you would have to talk with a plumber. Create a chart to regulate hot water usage. Press the + (Up) or (Down) buttons until the desired temperature appears on display. The hot water recirculation pump works by: The very phrase recirculating comes from this pump returning the unused hot water back into the tank. Apart from that, you can easily turn it on/off on your mobile whenever you wish. Quite surprisingly for most homeowners, the biggest problem with this type of recirculation pump is getting cold water. You will not get hot water instantly. If you have a Navien tankless water heater this can be done by simply pressing a . You can adjust the temperature while the display is flashing. 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. Another suggestion I can give you is to maintain and service your Navien water heater according to the manual. Take care! How Does A Hot Water Recirculation Pump Work? NPE-A2 Series | Navien 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. Separate Recirculation Pumps. Prevention of Modern Slavery Progress Reports. Return this item for free. If you fail to stop the noise after trying all the steps I mentioned, I bet there is a complex problem with the unit. You can tell because the cold supply line is connected to the circulating return. Is this a common drawback with the under-sink crossover valve? Turn off the device for 30 minutes and then restart it. Ask an Expert Home Improvement Questions HVAC Questions Navien NPE-240s with external recirculating pump. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. (std. 5.0 out of 5 stars 3 ratings. The cost of a separate recirculation pump would fall in the range of $200 and $500, depending on the size required. Can a Hot Water Recirculating Pump cause low water pressure? Remove the inlet filter and wash it under the running water with the help of a brush. The upfront cost is a major deterrent when deciding if it makes sense to install a circulation pump or not. What Parts Are In The Hot Water Circulation Pump Kits? The water heater will not provide hot water instantly. The bigger the house, the longer these water pipes usually are, and the longest it takes to get hot water. We dont. When you turn on the shower or a faucet, do you get hot water instantly? Its not exactly normal. I may be able to correct this if I solve the mystery on where the dedicated return line might be. Below, I will break down everything to stop the buzzing noise. For most existing homeowners, integrating a recirculating home pump comfort system on top of the existing piping makes much more sense: Heres why this is the most popular type of hot water recirculating pump in homes: You use the existing water pipe alone. I bought the remote PB you referenced above and the specs on it say it uses 12 VDC, but I couldn't find anywhere whether the 12 V supplied by the Navien board is either AC or DC. Is there a proper earth ground point in this switch box? Many systems turn on and off automatically to keep the water within a specified temperature range. Turning off the water recirculating pump isnt a big deal. Just locate the air bleeder valve on top of the recirculation system. Also, as I'm taking a closer look at it, I'm concerned that some key things may be amiss. Open the hot and cold service ports and turn the pump on. Fits These Models You just have to set the timer as you use it. Learn more about Stack Overflow the company, and our products. Ensure that all hot water faucets are closed, and ensure that the internal circulator and any external circulating pumps are off. It depends on how the recirculation pump is installed, and some other factors, plumbers usually know this stuff pretty well. Thanks. The large valves should be in the off position, whereas the service valves should be in the on place. However, this is only a temporary fix. Troubleshooting Navien NPE-240A Internal Recirculation Pump Advantages and disadvantages of hot water circulation pumps. Shut off the appliance for half an hour and then restart. When the water is sufficiently hot, the temperature sensor will shut off the power to the recirculation pump to conserve energy. What You Should Know Before Shutting off the Water This unit doesnt have dip switches as far as I undersrand. The error code E441 informs about the open thermistor or short circuit problem. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. That is a premium service however. It tells you about the abnormality of the external tank thermistor. The pump saves this cold water and recirculates it in the hot water. Do You Need A Recirculating Pump With A Tankless Water Heater? Turns out, make sure you isolate the recirculation pump from the vibration. This may require chasing the supply lines. If you've got a tankless water heater installed that doesn't come with a built-in recirculation pump, then in such a scenario, a separate recirculation pump can do the trick for you. - 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! Is this correct for the function of the system? 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. How To Turn On A Navien Tankless Water Heater | GardeningLeave Now, we have to check if these costs are balanced out by the water savings. If necessary, replace them all. The recirculation pump is fixed on the water heater. Then re-insert the filter and screw it back in place. This time of year, we dont need to have instant hot water circulating so we turned off the pump. Thats all for today. The exhaust is overheating. Navien ComfortFlow is the first and only system that incorporates a built-in insulated buffer tank and recirculation pump. 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. Close the cold and hot water inlet valves and then drain the water heater. If it does, you could trigger the operation to save money whenever your system detected 'away' or however you've got it programmed. I can figure out occupied or not from a home automation or alarm system. 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. If any particular ad is your REASON for blocking ads, please let us know. We have one faucet in the kitchen that has instant scalding hot water the second you turn it on . Asking for help, clarification, or responding to other answers. (+ Installation Costs), How Many Amps Does A Tankless Water Heater Use? 30000466A Navien Circulation Pump NAPU9GLPCT33 - amazon.com The major difference with hot water pumps in new homes is that you can install a full recirculation pump system (Type #1). Why are physically impossible and logically impossible concepts considered separate in terms of probability? 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. link to How to Connect a Generator to Your Tiny House Without a Transfer Switch, Electric RV Water Heater How to & Troubleshooting Guide, Richmond Water Heater How to & Troubleshooting Guide, Insinkerator Hot Water Dispenser How-to & Troubleshooting Guide. This serves two functions: You save water. 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. If your system is re-circed as close as possible to the fixtures (ask yourself do I have two hot waterlines for each fixture?) toby sutton wife of frank sutton how to turn on navien recirculation pump But, making sure youre doing it the right way is important. Generally, your Navien recirculation pump will produce a humming noise because of the wrong size primary loop, not purging the recirculation pump, or foreign materials getting into the pump. Now, you have to know the hows for reducing damage. SEER = (1 EER100% + 42 EER75% + 45 EER50% + 12 EER25%)/100, Total Heat (BTU/hr.) Navien 30010780B Circulation Pump - amazon.com Correcting Navien Tankless Hot Water Heater Installation Foreign materials like small pebbles may get into the recirculation pump. Navien NPE-240 A Recirculation Line - YouTube Please see below for important warranty information and a list of models that this part fits. Pump the white vinegar into the cold side, up through your water heater, and out the hot side. Those are quite significant savings. If we take that the average price of water is $0.18/gallon (according to Statistas 2019 study), heres how much you can save on water with a recirculation pump: Water Savings = 2,920 gallons/year * $0.18/gallon = $525.60/year. Why isn't my Navien tankless water heater performing as it should? Second, you can use a flex connector to isolate the pump. Rather than using the hard wired door bell style push button that comes with the kit, I bought this remote control unit (. Are these pumps just a luxury that enables you to get hot water lightning fast, or do they actually save you money? Hello Lucy, in most cases, you have that option. Lets outline them here: To determine if installing a hot water recirculation pump makes sense for your situation, we have to check the pros and cons. 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. I'm fairly handy with DIY plumbing, but not and expert and I know when I am out of my league. It tells you about the improper operation of the flow sensor. Next, clean the dirt-trap. Start by removing it from the heater so you can clean it properly. Both types of systems have similar pros and cons. 6\" Magnetic Nut setter Sethttps://amzn.to/2JdAckuMilwaukee 48-22-6330 Tongue and Groove Pliers Sethttps://amzn.to/3kfch0RGoPro Hero 8 Black Action Camera with Accessory Bundlehttps://amzn.to/34AGamfVeto Pro Pac Tech XL Tool Baghttps://amzn.to/2U1QqPFOLIGHT Bundle H2R LED Headlamp, 2300 Lumens Rechargeable Flashlighthttps://amzn.to/370rGiqAmprobe AMP-320 Clamp Meterhttps://amzn.to/2GNxUHeFluke 117 Electricians True RMS Multimeterhttps://amzn.to/3iFZP9tMilwaukee 2364-20 M12 Roverhttps://amzn.to/2HNvitKMilwaukee Rocket light 2132-20https://amzn.to/341OTPm #MIHeatingGuy #MichiganHeatingGuy Do you want to know the details? To calculate the size of the heater, you will need to add up the amount of water required at a particular time. That's an interesting solution. 2. To create an energy-efficient full recirculation system, your pump has to come with these two efficiency optimizing parts. The estimated annual operating cost of the Navien tankless water heater, based on the yearly estimated residential use per US Energy Department test criteria, is $191. 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. The operations manuals above cover all Navien NPE-A and NPE-S series condensing tankless water heaters. Dont hesitate to switch the tees around if you get them backward. Ask Your Own HVAC Question b55db6.jpeg 6a7761.jpeg ee4ed0.jpeg cc7ba2.jpeg 8ec6a3.jpeg 32aa59.jpeg If you are unsure of whether the recirculation pump was correctly installed, contact Navien technical center or the NSS agent who installed the heater. House generators are quite expensive. Check the wiring and cold water inlet two thermistors and make sure both are in good condition. Hello David, well, the additional costs are a con here. Then, use the arrows to set the desired temperature. Remove the filter from the plastic assembly and clean it with a toothbrush, and clean running water. For example, an open or shorted sensor causes this issue. Tankless Water Heater Wire Size Calculator: What Gauge Wire (AWG)? Turns out if you "disable" schedules when in always on mode it stops the every 30 minute schedule the device uses when in Always On mode. This gives you a negative return on investment (ROI), so. We have some suggestions for you if you want to buy the best wifi sockets. DC Wire Gauge Calculator: What Gauge Wire (12V, 24V, 48V)? If this does not work, hire a professional to repair or replace any damaged parts. However, the plumber branched this off into the circulation water inlet. = 4.5 x CFM x h (std. If the external recirc is set up without this it will just run, defeating the purpose of hot water on demand. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. This extra pipe is installed parallel to conventional piping. 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. This chapter will reveal all the possible culprits that cause the recirculation pump of your Navien to make a humming noise. I am guessing that he only returned the HOT line, hence the delayed time in "INSTANT HOT", as the Naviens are sold as well as there 96% efficiency!! Does anyone know the logic behind how Navien controls their internal recirculation pump when it is circulating with an external loop? Navien Flow Sensor. ($0.05 $0.22/h), How Much Does 1000 Watts Cost Per Hour? However, if you want hot water fast, these on-demand heaters are not ideal. Note on tankless hot water heater recirculation pumps (double trouble solved). The heater turns off automatically when the flue pipe surpasses 149 degrees Fahrenheit. Eric Alvarez is an HVAC guy based in El Paso, Texas, United States. Since pumps cost about $200 each, the recirculating pump will pay for itself in 3-4 years. . Way too many variables to even begin to diagnose online IMO. where does the recirc line tie come off the hot lines? We don't tend to provide any plumbing advice or any advice that should come from a certified professional. So, saving water is the main reason for calling a recirculation pump eco-friendly. In his spare time, Oscar loves tinkering with electronics. and our It clips on the side of the PCB board without screws and then you connect a ribbon cable to the PCB. Working well so far. Hi Patrick, thats a good insight. Why Does My Stiebel Eltron Tempra High-limit Switch Keep Tripping. It shows that the heating return thermistor is not working correctly. With two pipes, you can create a loop between the water heater and faucets. 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. We recommend to use caution and seek the advice of qualified professionals. Check to see if the water valves are open. Turns out that it was the temperature of the return water was high enough to stop the recirculation. The water heater will retain your settings during a power outage. Then turn on the heater and then your pump. 2. . I think it's 100F. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. It sounds awful and not like any other recirculating pump I've ever heard. Controling Navien NPE internal recirculation pump If required, replace the thermistor. Normally uncontrolled pumps are used as the flow variation is relatively small. This is known as recirculating home pump comfort system (Type #2) and its the most popular way to get hot water quickly. Bosch Tankless Water Heater Troubleshooting [A Complete Guide], Bosch Tankless Water Heater Error Codes [Ultimate Guide], Bosch Tankless Water Heater Wont Ignite [7 Easy Solutions]. The short answer is no, your water will still be pure. This type of hot water recirculation system is most appropriate for new homes; homes that are in the 3rd or 4th part of the building process. When I hooked hoses to the service pipes, the system still produced a strong, steady flow of water, seeming to not drain. Perhaps not everyone is familiar with the newer manual. last week. This issue is more common in older heater models. 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. This is because the motherboard or control board is the units brain responsible for receiving and transmitting information in the heater. 30000466A Navien Circulation Pump NAPU9GLPCT33 . Using a corrosion-free flow sensor made of stainless steel is a better option. The default setting is usually around 120 degrees Fahrenheit. The DIP switch setting has some problems. Privacy Policy. To learn more, see our tips on writing great answers. Not only that, by now you should know how to turn it off and why its important to do so. 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. The heating supply thermistor is defective. Correcting Navien Tankless Hot Water Heater Installation, We've added a "Necessary cookies only" option to the cookie consent popup, Tankless water heater - not consistent hot water output, Plumbing Manifold Use With a Tankless Hot Water Heater, No hot water if hot water recirculator pump is shut off, warm water only when we replaced the hot water heater with a tankless heater. It is important to note that recirculation pumps dont work continuously; they are used only when we open and close the faucet. I broke down all the possible reasons that cause your Navien Recirculation Pump to produce a humming noise. This might be a small installation error or a faulty setting. If water comes out from the pressure relief pipe, this indicates that the issue is not with the unit but with the house's plumbing. Turn the unit off. When building a house, its smart to think about hot water recirculation as well. It is a visible sign that your devices cold water inlet two thermistor is having some issues. Also, check the feeder valve and pressure relief valves activity. JavaScript is disabled. Parts that will actually be used depend on what kind of hot water recirculation pump you have. Get in touch with Navien technical support or a professional heater repairman. sounds like you need a different plumber to assess your situation. (1000-3000+ Sq Ft Homes), Thermostat Says Heat On But No Heat? Hopefully its clear which is which when Im down there. Here are some simple instructions on how to turn on your Navien tankless water heater. The Navien is smart enough to stop recirculation when it recognises hot water has made the entire loop.
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turn off navien recirculation pump