Here are some of the leading causes of cold water production; Which means there isnt enough time for the water to heat up. This time of year, we dont need to have instant hot water circulating so we turned off the pump. Flush the vinegar out of your water heaters. This Navien 30010780C Circulation Pump for NPE Series is a genuine OEM repair part. If youre using this pump and cant fix it yourself, you can call a professional mechanic to fix it. You can also identify and fix them yourself. Depending on the size of the pump and installation difficulty, the average cost of a hot water recirculation pump costs anywhere from $200 to $800 (installed). Save my name, email, and website in this browser for the next time I comment. First, find the control panel on the front of the unit. It usually occurs due to an open or shorted sensor. = heat loss from the circulation system [kW] In fact, with a tankless water heater, you face double trouble (thats why youre not getting hot water fast): Because we need to wait longer for hot water in the case of tankless water heaters vs. traditional water heaters, it makes sense to minimize that time in tankless heaters even more. The second method seems to suggest the cold water at sinks will most likely have been run through the hot water tank. Remove the front cover of the water heater. air), Sensible Heat (BTU/hr) = 1.1 x CFM x t (std. Also, turn off the water heater, and recirculate the pump. In compliance with California's . This is the system you can see in the photos above. Remove the filter from the plastic assembly and clean it with a toothbrush, and clean running water. Way too many variables to even begin to diagnose online IMO. 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. 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. This item: Navien 30010780B Circulation Pump. It is affordable and can easily fix your problem. Also, check the feeder valve and pressure relief valves activity. I added an additional remote for a total of 3. The pump works on the existing pipes; it basically sends the leftover water back to the boiler or the heater. T = the water cooling, normally 5 C determined at the farthest consumption point [C]. Obviously, everybody loves immediate hot water from their faucets but this luxury can be quite expensive. Locate the power button and press it to turn on the heater. It could be open or shorted. You can contact a plumber if necessary. The leading causes of the intermittent flame; You can fix these issues by maintaining and cleaning the heater. The large valves should be in the off position, whereas the service valves should be in the on place. For a better experience, please enable JavaScript in your browser before proceeding. For example, you may damp it into a bathtub, pushing the water through the isolation side on hot. You can isolate the pump from the vibration in two ways. It worked perfectly. 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. You have to inspect the sensors connectors to confirm they are not wet and fixed correctly. Get a sump pump and connect the cold service hose to the sump pump. Second, you can use a flex connector to isolate the pump. 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. Also, check if the electrical cord is grounded correctly or not. Eventually, they pay for themselves by reducing the water bills. 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). In his spare time, Oscar loves tinkering with electronics. Great article!! Check the thermistors condition along with pump wiring connectors. (std. Solutions like- unplugging it, using a timer and using wifi sockets are convenient. The DIP switch setting has some problems. Now you have your socket, turn it off/on whenever you want! FREE Returns . Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Some brands/models dont include it. Unfortunately, the heat exchanger cannot be fixed and has to be replaced. A hot water recirculation pump can be sized for a given system using the following formulas: Water flow qc = /T x 4200 Theoretically Correct vs Practical Notation. He obtained his Bachelor of Science degree from the University Of Texas at El Paso. Examine and wash the intake air filter underneath running water using a toothbrush. Then, you can change the tank thermistor if needed. Does anybody have any thoughts of what I should get checked out? The whole point of installing such a pump is to get hot water fast. 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. Once the display stops flashing, the temperature setting is stored. Where did you find that info? Start by turning off the service valves and removing the hoses. The cold water pipe coming from the wall goes into the domestic water inlet on the tankless heater, as it should. However, the plumber branched this off into the circulation water inlet. Hope this illustrates well why this might be occurring; its a pretty standard thing. This is because the motherboard or control board is the units brain responsible for receiving and transmitting information in the heater. Side question: are you able to explain to me what always on means? Connect a regular garden hose to the hot side service valve. Obviously, you might be wondering: If the recirculation pump loop is running continuously, youre probably expanding too much electricity just to get hot water faster. 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. Only 19 left in stock - order soon. Circulation pumps can wreck havoc on your lines if you run them constantly due to friction at bends causing pinhole leaks. A hot water recirculation pump can be sized for a given system using the following formulas: Water flow qc = /T x 4200 We want to reduce waste in using water given our well situation. Is there a check valve? This time of year, we dont need to have instant hot water circulating so we turned off the pump. It means the circulation pump is not working correctly. We recommend to use caution and seek the advice of qualified professionals. For example, if you get the tees backward, the recirculation pump will not function properly. I recommend you disassemble the recirculation pump from the unit and inspect it carefully for foreign materials. It shows that the water adjustment valve is not operating properly. Read the users Navien nr-240a manual to get information on how to flush the heat exchanger and reset the remote for Navien tankless water heater. So, saving water is the main reason for calling a recirculation pump eco-friendly. This chapter will reveal all the possible culprits that cause the recirculation pump of your Navien to make a humming noise. Refer to the user manual to locate the Hot Button and then press it to activate hot water recirculation. I just hooked up the NR-20DU wired remote control ($80 from Fergusons) and programmed 3 on/off recirculating cycles based on family needs. You will not get hot water instantly. We and our partners use cookies to Store and/or access information on a device. . Thats why most homeowners prefer installing the recirculation pump without the extra pipe. However, this is only a temporary fix. As an Amazon Associate we earn from qualifying purchases. The circulation return needs to come from a loop at an end of the hot supply line. Also, as I'm taking a closer look at it, I'm concerned that some key things may be amiss. I'm fairly handy with DIY plumbing, but not and expert and I know when I am out of my league. Another suggestion I can give you is to maintain and service your Navien water heater according to the manual. . Take care! Also, make sure you get the 1- pipe for the horizontal manifold, which will help even out the flow of the recirculators. But it will be best if you contact a certified plumber to fix this issue. The best answers are voted up and rise to the top, Not the answer you're looking for? After using this amount of time, hardware gets old and starts to malfunction. Here are some simple instructions on how to turn on your Navien tankless water heater. 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. This breaks down the scale and flushes out the sediment. If you add a powerful hot water circulation pump at the heater (not under the sink), the hot water will reach the faucet much faster. Recirculation Settings by pressing down the OK button. First, place a thick rubber between the pump and anything it will be mounted on. This error informs you there is something wrong while you reset the unit. Contents show On the other hand, if you find no foreign stuff, ensure you purge the air out of the system. For example, you will see Navien error code 003 on the display screen, which means the igniter is malfunctioning. I recall it was p23 but it was definitely larger than p20. Thanks for contributing an answer to Home Improvement Stack Exchange! Then re-insert the filter and screw it back in place. The setup is correct and the only two settings you need are P.12 for recirculation time and P.16 for length of recirculation line from farthest point in the house. 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. Continue reading below Our Video of the Day 1. Since pumps cost about $200 each, the recirculating pump will pay for itself in 3-4 years. 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. 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. On a side note, if your Grundfos circulating pump is making sounds, it may have air locks or installation problems. I used a razor and carefully pried each side of the RM11 open to reach the programming switch. Working well so far. If pointed in the right direction, though, I might be able to solve this. The upfront cost is a major deterrent when deciding if it makes sense to install a circulation pump or not. That means that all the costs of the hot water circulation pump are covered by the water savings. So, there is such a thing. Here is the summary of all the negative aspects of hot water circulation pumps: This is the key question. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. If you have a Navien tankless water heater this can be done by simply pressing a . Because the recirculation pump ran with no water, the motor ended up burning out. One option is to put a relay/contactor between the Navien and the internal pump, so that that pump can only get power when the house is occupied. Then, turn it on again. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. In fact, however, the whole machinery of the hot water recirculating pump has to be activated for this to happen. It can take anywhere from 10 seconds to 1 minute for the hot water to reach the faucet. 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. Hi Mike, we think about water as hot vs. cold. (1000-3000+ Sq Ft Homes), Thermostat Says Heat On But No Heat? Thats 2,920 gallons of water per year wasted. Though we share resources, information, and educational guide on plumbing & DIY projects, the content here is not a substitute for professional guidance. I can figure out occupied or not from a home automation or alarm system. Are these pumps just a luxury that enables you to get hot water lightning fast, or do they actually save you money? Parts that will actually be used depend on what kind of hot water recirculation pump you have. 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. But, yes, I understand why it seems feasible for the sediment to eventually enter the water flow and cause the change in taste of water. However, I have envious of those who have the NPE with the hot button and wifi link. Solution: Ensure all return and supply lines are open and check the 2-way valve's direction. It is brand new in the original Navien factory packaging and is guaranteed to fit and function properly. Here is the final install. I bought the. $257.16. Therefore, when it malfunctions, it is a sign that the heater has another major underlying issue. Both types of systems have similar pros and cons. We have some suggestions for you if you want to buy the best wifi sockets. The error code E441 informs about the open thermistor or short circuit problem. Older Navien heater models are prone to flow sensor issues. I have an NR240A for about 10 years now. Troubleshooting Navien NPE-240A Internal Recirculation Pump - YouTube 0:00 / 4:21 Troubleshooting Navien NPE-240A Internal Recirculation Pump RCGooner2002 240 subscribers Subscribe. Just one Navien water heater manual for all NPE-A and NPE-S units. Go along the steps described below to set the recirculation settings. 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. Similarly, if the return from the loops is mixing with the boiler loop system and cooling off the water before it gets sent to the recirculation pump, you will face this problem. Average 1-6 Person Home kWh Usage, Gas Vs Electric Water Heater Monthly Cost Comparison (State-By-State), Water Heating Costs For 1,2,3,4,5,6 Family Homes (State-By-State Analysis), Electric Water Heating Cost, kWh Usage Per Month (State-By-State RECS Analysis), What Is W2 Wire On Thermostat? But, you can buy a new recirculating pump for $200-400. 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. You must log in or register to reply here. Use your pump when you want to use it. However, whenever I turn on the cold water at the kitchen sink the tankless unit starts to run (heat water) even though I dont want heated water. Make sure there are no loose connections. Yes!!! Change the thermistor if needed. Prevention of Modern Slavery Progress Reports. It also increases the gas bill. Only 13 left in stock - order soon. 2. Make sure the electrical cord is grounded. Check this too: Electric RV Water Heater How to & Troubleshooting Guide. Therefore, I can't drain the system. Press question mark to learn the rest of the keyboard shortcuts. Turns out, make sure you isolate the recirculation pump from the vibration. If the problem persists, call a technician to fix the unit. I recently had a 240A2 installed. Also, check the filters to see if they are clean. To install a full recirculating pump system, you need to consult with a plumber because you will need an extra pipe. If you have come back from a vacation, first turn on the main water valve. Categories Home Improvement, Patio, Lawn & Garden, Plumbing, Tools, Water Valve Handle Broke Off? It clips on the side of the PCB board without screws and then you connect a ribbon cable to the PCB. JavaScript is disabled. Your question, can I turn off my hot water pump? has been answered. ($0.05 $0.22/h), How Much Does 1000 Watts Cost Per Hour? I broke down all the possible reasons that cause your Navien Recirculation Pump to produce a humming noise. Check to see if the warranty is still valid and contact the manufacturer. Reinsert the filter into the plastic assembly. The consent submitted will only be used for data processing originating from this website. 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. The electric recirculation pump uses this other pipe to pump the hot water back into the boiler or water heater. However, whenever I turn on the cold water at the kitchen sink for a few seconds the tankless unit starts to run (heat water) even though I dont want heated water. It shows that the heating return thermistor is not working correctly. Confirm the thermistor and wiring is in good condition. It sounds awful and not like any other recirculating pump I've ever heard. Water heaters think about water in temperature: If the inlet water temperature is 40F and the guy at the kitchen sink doesnt want his hands to freeze, I need to warm that water up to 55F. Reconnect the power supply to the water heater. Not only that, by now you should know how to turn it off and why its important to do so. Now, that comes to the question, can I turn off my hot water recirculating pump? You just have to set the timer as you use it. First, place a " thick rubber between the pump and anything it will be mounted on. Dont hesitate to switch the tees around if you get them backward. Examine the thermistors condition and pump wiring connectors. This gives you a negative return on investment (ROI), so. 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. Press the reset button to reset your device. Make sure to follow the required instructions before and after youve turned it off for your safety. Water recirculating pumps just circulate the water; the water pressure should stay the same. 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. This gives users hot water when they need it, saving water and money. On-Demand Mode. It's unfortunate he's not around to explain all this to you. Question: How is a water recirculating pump eco-friendly?Answer: The basic reason is, water recirculating pumps save water. Ensure all return and supply lines are open and check the 2-way valves direction. Remove the screw that secures the air intake filter and then remove the filter. There is some issue with the front panel key. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. 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. We will presume that youre buying a hot water circulation pump for a household of 4 and that each person wastes about 2 gallons of water per day (mean value of Oak Ridge National Laboratorys study). Most of information is available in the install manual but some of it requires a phone call to Navien support. Next, hook hoses to the valves, then open them to drain the water. There are several ways to do it. We can go from there with up to 3 hours of dedicated live coaching on the telephone if needed. Why are physically impossible and logically impossible concepts considered separate in terms of probability? Is the cable harness compatible? Consider yourself lucky if this installation hasn't damaged your circulating pump inside the unit. Learn more about Stack Overflow the company, and our products. 5.0 out of 5 stars 3 ratings. Quick summary on costs: Recirculating a pump is certainly useful if you want hot water quickly. We might be able to do something about it. (+ Installation Costs), How Many Amps Does A Tankless Water Heater Use? You need to run white vinegar through the system, to descale the water heater. Place a bucket underneath it to catch any water that drains when you remove the filter. Does It Save Money? This propels the water to your faucet or shower much quicker. Our goal here at GridSub is to help you find viable solutions to different off-grid problems. 1. You are using an out of date browser. That's an interesting solution. This serves two functions: This is also true for tankless water heaters. 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. Then turn on the heater and then your pump. - 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! Lets look at the two most popular types: You can install hot water or tankless hot water recirculation pump in an existing or in a new home. This may require chasing the supply lines. It means that there is an issue with the air pressure sensor. That may present a problem in the summer when you need cold water; turning the pump off during the summer months solves the problem. air), Latent Heat (BTU/hr) = 0.69 x CFM x gr. Turns out, make sure you isolate the recirculation pump from the vibration.
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