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Reinsert the filter into the plastic assembly. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Troubleshooting Navien NPE-240A Internal Recirculation Pump It sounds almost like cavitation or a magnet rubbing against the casing as the recirculating pump winds down. 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. How Much Does 500 Watts Cost Per Hour? Below, I will break down everything to stop the buzzing noise. if your water heater has 5 connections ( CW in; HW out; Recirc in; condensate ; gas) then the recirculation is coming backing to the water heater. Inspect the water feeder valve, water pressure, and water pressure relief valve. It only takes a minute to sign up. Answer: It really depends on your model type. The recirculation timer is set to operate ever 15 minutes, even though we are often not at the property. Eric Alvarez is an HVAC guy based in El Paso, Texas, United States. (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). Why are physically impossible and logically impossible concepts considered separate in terms of probability? Thats why turning off your pump is important when youre not using it. Why Its Important To Turn Off The Water Recirculating Pump? Note on tankless hot water heater recirculation pumps (double trouble solved). Save my name, email, and website in this browser for the next time I comment. Turn the pump off and dump the vinegar. House was built in late 1990s and is 2 story, built on a slab foundation. Separate Recirculation Pumps. Save my name, email, and website in this browser for the next time I comment. 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. Turn off your main water valve if you are going on vacation. Heres the thing: Both cold and hot water need to be supplied using the same pipe. Foreign materials like small pebbles may get into the recirculation pump. The disadvantages of recirculating pumps include waiting for cold waters (its a less-known disadvantage), having to install additional wiring, and so on. A hot water recirculation pump can be sized for a given system using the following formulas: Water flow qc = /T x 4200 air), Sensible Heat (BTU/hr) = 1.1 x CFM x t (std. Increase water pressure at the water heater. We do all the time-consuming research and testing for you. Navien Recirculation Settings: Everything You Should Know Now, we have to check if these costs are balanced out by the water savings. All you have to know is how to turn it off. 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]. JavaScript is disabled. 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. Press J to jump to the feed. Question: How is a water recirculating pump eco-friendly?Answer: The basic reason is, water recirculating pumps save water. Does the thing have a 'vacation' mode? Step 1 Remove the plug from the socket on the end of the wire that connects to your circulator pump. I agree the user manuals are very helpful. You have to inspect the sensors connectors to confirm they are not wet and fixed correctly. It means there is some issue with the flow sensor or switch. However, if you want hot water fast, these on-demand heaters are not ideal. Heres the deal on how to get the hot water faster from a water heater: When we turn on any faucet, the hot water needs to travel from the hot water heater to the faucet. Also, did you wire the PB from the Hot Button kit or only use the remote? Navien 240A2 tankless help : r/Plumbing - reddit We trusted him and thought everything was just fine as we were getting hot water throughout the house. Turn off the recirculation when the house is not occupied, in order to save even more energy. Confirm the thermistor and wiring is in good condition. 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? Some brands/models dont include it. Sold by HVAC Pros and ships from Amazon Fulfillment. Then, read the manual on Navien tankless water heater how to reset. NaviCirc Recirculation Valve | Navien In his spare time, Oscar loves tinkering with electronics. Connect and share knowledge within a single location that is structured and easy to search. 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. Our goal here at GridSub is to help you find viable solutions to different off-grid problems. 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. Navien ComfortFlow is the first and only system that incorporates a built-in insulated buffer tank and recirculation pump. Call Navien and explain if yours is older. We turn it off because it will waste gas. The major difference with hot water pumps in new homes is that you can install a full recirculation pump system (Type #1). Why do small African island nations perform better than African continental nations, considering democracy and human development? I'm fairly handy with DIY plumbing, but not and expert and I know when I am out of my league. Take care! The Navien is smart enough to stop recirculation when it recognises hot water has made the entire loop. For more information, please see our Thanks. 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. The main sign of motherboard or control board failure is intermittent switching off and on. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Your article ended saying All in all, its important to understand that recirculation pumps are worth the money. Examine the wiring and thermistors condition. Once again, there are a few different things it could be. This is where the timer and temperature sensor come in. The default setting is usually around 120 degrees Fahrenheit. New build - tankless hot water heater - recirculation pump needed? - Houzz 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. Weve tried to include every concern you might have regarding turning off the water recirculating pump. (42-167 Amps), How Much Propane Does A Tankless Water Heater Use? 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. There are no error codes showing. 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. The issue is most likely, the flow sensor inside the unit is not spinning correctly. It is affordable and can easily fix your problem. 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. The cost of a separate recirculation pump would fall in the range of $200 and $500, depending on the size required. Its not exactly normal. Check the thermistors condition along with pump wiring connectors. Turn off the power before removing the filter. 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. Use your pump when you want to use it. Make sure the exhaust pipe is not obstructed. I added an additional remote for a total of 3. 30000466A Navien Circulation Pump NAPU9GLPCT33 . You can crack open the manual for your tankless heater and check if it comes with that option. Overusing your recirculating pump also increases your electricity bill. Manage Settings The buffer tank eliminates the "cold water sandwich" effect and issues of minimum flow rates commonly found in other tankless water heaters. (With Water Savings Analysis), Note On Tankless Water Heater Hot Water Recirculation Pumps (Double Trouble), How Much Electricity Does A Tankless Water Heater Use? 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. Your Navien Recirculation Pump will make a humming noise like a refrigerator if you dont bleed the air out of the recirculation system. I got a Navien NPE 240A2 installed in my home with dedicated recirculating line (hopefully I got the lingo right!) If your pump does this, then it is to be expected, otherwise it sounds like the hot and cold are mixing at some point and you'd need to find out where . Now you have your socket, turn it off/on whenever you want! This unit doesnt have dip switches as far as I undersrand. Check to see if the warranty is still valid and contact the manufacturer. So, saving water is the main reason for calling a recirculation pump eco-friendly. Most of information is available in the install manual but some of it requires a phone call to Navien support. 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. You can contact a plumber if necessary. 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 A hot water recirculation pump can be sized for a given system using the following formulas: Water flow qc = /T x 4200 Correcting Navien Tankless Hot Water Heater Installation Make sure to follow the instructions before and after you turn off the pump. I have alos checked my HeatBox settings to ensure the temp is set high enough for my domestic supply (set to around 120 degrees). On the other hand, if you find no foreign stuff, ensure you purge the air out of the system. How? = 4.5 x CFM x h (std. Here we will cover all the important parts of hot water recirculations pumps, including: You will get an overall look at how you can use increased water pressure by a circulation pump for almost instantaneous hot water access. So, hire a professional to deal with the issue. Sure there is likely some distance between the recirculation line and the fixture which should me some time till hot water reaches. I have a tankless water heater with an external recirculating pump at the heater and a crossover valve under the kitchen sink. The E615 tells you about the irregularity in input and memory. It usually occurs due to an open or shorted sensor. It worked perfectly. 1. Examine the controllers condition and replace it if required. This can be determined based on the following factors: The average water usage for different hot water uses are as follows; Check this too: Insinkerator Hot Water Dispenser How-to & Troubleshooting Guide. If it does, you could trigger the operation to save money whenever your system detected 'away' or however you've got it programmed. Here is a list of advantages associated with hot water circulating pumps: Now lets have a look at the disadvantages of these pumps: Needless to say, recirculation pumps are not free. House generators are quite expensive. 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. Navien Recirculation Pump Noise [4 Easy Solutions], 02. This extra pipe is installed parallel to conventional piping. Since pumps cost about $200 each, the recirculating pump will pay for itself in 3-4 years. Connect a regular garden hose to the hot side service valve. Otherwise, this will cause the shut-off valve to get damaged. This serves two functions: This is also true for tankless water heaters. The large valves should be in the off position, whereas the service valves should be in the on place. Not only that, by now you should know how to turn it off and why its important to do so. Hot Water Recirculating Pumps Explained: Why, How, Costs (+Tankless) Remove the filter from the plastic assembly and clean it with a toothbrush, and clean running water. If the problem persists, call a technician to fix the unit. 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. Crazy coincidence that I ran into your post because I've been researching the same issue. The air will need to be bled out of the system. 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. If yes, clean them. Navien NPE-240 A Recirculation Line www.amazon.com/shop/miheatingguy Milwaukee 2131-20 M18 ROCKET Dual Power Tower Light Hot Water Recirculating Loop Owen Perkins 81K views 3 years ago NAVIEN. The recirculation pump saves on water bills by reducing the time to get hot water. 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.