The pump saves this cold water and recirculates it in the hot water. Contents show Plug n play (after removing front panel to access the plug). To remedy this, you can take the two clamps off the sensor, pull it out and clean it. Not really. Press the M (menu) button on the front panel and choose the 1. The cold water pipe coming from the wall goes into the domestic water inlet on the tankless heater, as it should. Examine and confirm the pressure sensor and wiring are in good condition. Then check to see if the plumbing lines and the heaters water lines are clogged. However, the plumber branched this off into the circulation water inlet. Yes, you can turn off your hot water recirculating pump. The short answer is no, your water will still be pure. If you have any questions about these pumps, how they work, or some calculations, you can give us the specifics in the comments below and well try to help you out. Having a tankless water heater is an energy-efficient way of getting hot water. Continue with Recommended Cookies. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. The 3/4-inch pipe thread connectors are used to connect the pump to your existing pipes. Check to see if the warranty is still valid and contact the manufacturer. You also have to flush the heat exchanger. Question: How is a water recirculating pump eco-friendly?Answer: The basic reason is, water recirculating pumps save water. It means there is some issue with the OT-remote controllers operation. They are not without upfront costs or disadvantages. What is more, you can, by these estimates, reduce the future water bill considerably and actually profit nicely just by not needlessly waiting for water when youre waiting for the hot water to kick in. Any thoughts on that? Allow it to dry and then fix it back. Also the unit needs to be set to utilize the recirculation feature. Remove the inlet filter and wash it under the running water with the help of a brush. And the heater has been set to recirculation mode. Are these pumps just a luxury that enables you to get hot water lightning fast, or do they actually save you money? (Cost Calculations), BTU/h To Horsepower Calculator + BTU/h To HP Chart (To 72,000 BTU/h), Horsepower To BTU/Min: Convert HP To BTU Per Minute (Calc + Chart), HP To BTU/hr: Horsepower To BTU For A/C (Calculator + Chart). I used a razor and carefully pried each side of the RM11 open to reach the programming switch. The temperature sensor, on the other hand, makes sure you dont needlessly use too much energy to heat the water. However, the hot water had to travel from your water heater to the faucet for you to use. Its clearly not always running as I can see it says standby on the display most of the time. Start by turning off the service valves and removing the hoses. This gives you a negative return on investment (ROI), so. 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. Press J to jump to the feed. Sure there is likely some distance between the recirculation line and the fixture which should me some time till hot water reaches. 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. By installing a hot water circulation pump, you will have a hot shower right away. This may require chasing the supply lines. This requires the installation of an additional water pipe. Calculator + Chart (Natural Gas), Average Gas Bill For 1-Bedroom Apartment: State-By-State Cost Analysis, Average Electricity Bill For 4 Person Household (Survey Analysis), How Many kWh Per Day Is Normal? Others run on a timer. Asking for help, clarification, or responding to other answers. Another sign is the error code display. Check the wiring and cold water inlet two thermistors and make sure both are in good condition. Check this too: Electric RV Water Heater How to & Troubleshooting Guide. Lets start by looking at how these pumps actually work: If it takes forever for the hot water to start running, it usually means that there is a long pipe between a boiler (or a hot water heater or tankless water heater) and the faucet. I agree the user manuals are very helpful. The heater turns off automatically when the flue pipe surpasses 149 degrees Fahrenheit. I have the newest version pcb since I just bought the tankless. If you fail to stop the noise after trying all the steps I mentioned, I bet there is a complex problem with the unit. This extra pipe is installed parallel to conventional piping. It has a timer that turns on the pump at regular intervals, mostly during peak usage times. Hope this illustrates well why this might be occurring; its a pretty standard thing. and our How Much Does 500 Watts Cost Per Hour? Place the filter assembly back into the water heater and secure it with the screw. Then, you can change the tank thermistor if needed. I may be able to correct this if I solve the mystery on where the dedicated return line might be. 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. DC Wire Gauge Calculator: What Gauge Wire (12V, 24V, 48V)? The buffer tank eliminates the "cold water sandwich" effect and issues of minimum flow rates commonly found in other tankless water heaters. It could be open or shorted. To create an energy-efficient full recirculation system, your pump has to come with these two efficiency optimizing parts. You are using an out of date browser. 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 This may temporarily help to remedy the issue. air), Sensible Heat (BTU/hr) = 1.1 x CFM x t (std. Open the pressure relief valve. The E760 informs you that its time to flush your heater. Does anyone know the logic behind how Navien controls their internal recirculation pump when it is circulating with an external loop? Connect and share knowledge within a single location that is structured and easy to search. Hi Mike, we think about water as hot vs. cold. Create an account to follow your favorite communities and start taking part in conversations. Not only that, by now you should know how to turn it off and why its important to do so. Return this item for free. Now you have your socket, turn it off/on whenever you want! The total amount of water needed is 2 gallons + 1.5 gallons + (3 gallons * length of shower). If that fails, then the pump impeller might have disintegrated or the system water pressure may be below 0 at the pump suction causing the pump to cavitate. How? Get in touch with Navien technical support at 800-519-8794. The plumber said that he tied in both in the master bathroom and the kitchen but Ill crawl under the house to validate this. You can isolate the pump from the vibration in two ways. I noticed my apartment building installed one and at that time the whole water pressure was low. Set the pump in the bucket and plug it in. When the heat exchanger starts to crack, it creates a gap that can escape toxic exhaust gasses. Now, that comes to the question, can I turn off my hot water recirculating pump? Do not advertise or try to compare pricing. If the external recirc is set up without this it will just run, defeating the purpose of hot water on demand. When its time to work with a recirculating pump, you should follow some instructions to avoid further hassles. Why Does My Stiebel Eltron Tempra High-limit Switch Keep Tripping. Remove the front cover of the water heater. Take care! When I hooked hoses to the service pipes, the system still produced a strong, steady flow of water, seeming to not drain. but you stopped short for me. toby sutton wife of frank sutton how to turn on navien recirculation pump Once the tank is thoroughly drained, clean the base of the heater. I can figure out occupied or not from a home automation or alarm system. What kind of range do you get from the remotes? It worked perfectly. 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. What am I doing wrong here in the PlotLegends specification? It may not display this or other websites correctly. Some brands/models dont include it. I guess the recirculation line will be the only one that is copper. Turn off the device for 30 minutes and then restart it. Why Its Important To Turn Off The Water Recirculating Pump? However, this is only a temporary fix. Can a Hot Water Recirculating Pump cause low water pressure? Question: How much does it cost to buy a water recirculating pump? We do all the time-consuming research and testing for you. Prevention of Modern Slavery Progress Reports. If enabled you would find that your hot water is ready to go almost anytime you need it, without a long wait. This serves two functions: You save water. It will help you avoid common water heater issues and let you operate the unit smoothly. Thats all for today. Turn the unit off. You can isolate the pump from the vibration in two ways. Nobody really likes waiting for the hot water to start flowing under the shower or doing the dishes, for example. If you are looking for a tankless water heater that can provide you with hot water 24/7, Navien water heater is the way to go. Troubleshooting Navien NPE-240A Internal Recirculation Pump - YouTube 0:00 / 4:21 Troubleshooting Navien NPE-240A Internal Recirculation Pump RCGooner2002 240 subscribers Subscribe. It sounds awful and not like any other recirculating pump I've ever heard. Flush the vinegar out of your water heaters. To change the water temperature; Check this too: Richmond Water Heater How to & Troubleshooting Guide. On the other hand, if you find no foreign stuff, ensure you purge the air out of the system. Categories Home Improvement, Patio, Lawn & Garden, Plumbing, Tools, Water Valve Handle Broke Off? Depending on the age of your Navien NPE-A model, he did you a favor. Its really an easy task to do. The circulation return needs to come from a loop at an end of the hot supply line. 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. Solar panels, wiring, old TVs and sometimes DIY powerwalls. 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. I was under impression that with the recirculation pump this wouldnt be an issue (the wait time) and the fact that the water is just warm otherwise feels wrong. Its not exactly normal. Does It Save Money? Navien NPE-240 A Recirculation Linewww.amazon.com/shop/miheatingguyMilwaukee 2131-20 M18 ROCKET Dual Power Tower Lighthttps://amzn.to/3pe2hYHMilwaukee M12 Surge Hydraulic Driver Kit #2551-22https://amzn.to/3n5offbMakita E-01563 Impact XPS 3 Pc. The large valves should be in the off position, whereas the service valves should be in the on place. 2. 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. It usually occurs due to an open or shorted sensor. It tells you about the improper operation of the flow sensor. Hi Howy, well, the circulating pumps are usually powered by electricity, so they dont use gas. It sounds awful and not like any other recirculating pump I've ever heard. . Not Mounted The Pump Securely or Isolate It, Navien Tankless Water Cycles On And Off [5 Easy Solutions]. Fortunately, Navien water heaters recycle hot water and always provide hot water. Find products from Grundfos related to this subject. Then re-insert the filter and screw it back in place. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If your system displays this code, you need to confirm the water pressure is within good ranges. Go along the steps described below to set the recirculation settings. Shut off the appliance for half an hour and then restart. You can set it to run in the morning before work, and in the evening. Grundfos water recirculation pump may troubleshoot, Grundfos circulating pump is making sounds, Easy DIY Media Cabinet Build with Basic Tools, From Cast-Iron to Stainless-Steel: How to Replace Your Kitchen Sink, While theres no water in the pump, do not turn on the recirculating pump. Question: Can a recirculating pump last for 10-15 years?Answer: If you use it properly, it should last at least 10-15 years. This propels the water to your faucet or shower much quicker. It's unfortunate he's not around to explain all this to you. Hi Patrick, thats a good insight. 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. How do I align things in the following tabular environment? 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. 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. Also, check the filters to see if they are clean. I've bled the system top and bottom and even removed the return line then switched to internal pump yet it still makes this noise. where does the recirc line tie come off the hot lines? It does save you water but it also costs you a bit of electricity. A hot water recirculation pump can be sized for a given system using the following formulas: Water flow qc = /T x 4200 I got a Navien NPE 240A2 installed in my home with dedicated recirculating line (hopefully I got the lingo right!) Turn off the recirculation when the house is not occupied, in order to save even more energy. I have a clog, When the faucet is on the unit is indicating flow rate of 1.4 GPM which seems plenty and the recirculation mode is set to external & always on. If required, replace the thermistor. It shows that the heating return thermistor is not working correctly. The default setting is usually around 120 degrees Fahrenheit. The pump will cost you $200 to install, $5.50-$32 to operate, will waste $160-$400 per year and will save you $4-$50 on your water bill. I'm fairly handy with DIY plumbing, but not and expert and I know when I am out of my league. A while ago we had a plumber/friend install a Navien tankless water heater. Why are physically impossible and logically impossible concepts considered separate in terms of probability? You can return the item for any reason in new and unused condition: no shipping charges ; Does the thing have a 'vacation' mode? Use your pump when you want to use it. How To Fix Navien Tankless Water Heater Code E003? Our goal here at GridSub is to help you find viable solutions to different off-grid problems. Note on tankless hot water heater recirculation pumps (double trouble solved). In fact, however, the whole machinery of the hot water recirculating pump has to be activated for this to happen. This unit doesnt have dip switches as far as I undersrand. Is this noise normal coming from my Navien tankless heater? Press the + (Up) or (Down) buttons until the desired temperature appears on display. 30000466A Navien Circulation Pump NAPU9GLPCT33 . I installed this system a few days ago and I've been trying to trouble shoot the noise that's coming from the re-circulation pump. 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. However, that shouldnt happen if you have turned the pump off. If this does not work, hire a professional to repair or replace any damaged parts. To remedy the issue, consider increasing the gas supply to the heater. Unfortunately, the heat exchanger cannot be fixed and has to be replaced. This item: Navien 30010780B Circulation Pump. You can turn off the recirculating pump in various ways. Then what are we waiting for? Wash it under the water with a brush, let it dry, and then place it back. Then remove the cold water filter off located next to the cold water isolation valve. In large systems, however, it may be advantageous to use controlled pumps to enable adjustment of the flow when starting up the system and to be able to apply temperature control. Therefore, the only task you can attempt on this list is the gasket replacement for the leaking water connection. . 08. House generators are quite expensive. If you'd like to support the site, please allow ads. We recommend to use caution and seek the advice of qualified professionals. If it does, you could trigger the operation to save money whenever your system detected 'away' or however you've got it programmed. Confirm the thermistor and wiring is in good condition. I recently had a 240A2 installed. I recommend you disassemble the recirculation pump from the unit and inspect it carefully for foreign materials. Remove and clean the cold air intake filter. That means that the cold water is not actually cold; it will usually be slightly warm (at room temperature). Privacy Policy. In existing homes, adding an additional pipe for a full recirculating pump system is often too expensive; its just dont worth it, according to HVAC specialists. You can replace the sensor if needed. Is there a way to tell if the cold pipe is circulatory/return line or cold water from the mains? It also increases the gas bill. Sold by HVAC Pros and ships from Amazon Fulfillment. Second, you can use a flex connector to isolate the 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. You dont have to install an additional pipe. Parts that will actually be used depend on what kind of hot water recirculation pump you have. The recirculation pump is fixed on the water heater. I broke down all the possible reasons that cause your Navien Recirculation Pump to produce a humming noise. We were advised of this upon installation. Lets look at the individual parts that make up the recirculation pump for hot water: If you want to install a recirculation pump, you start by getting the whole recirculating pump kit.
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