It means the circulation pump is not working correctly. 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. The water heater will retain your settings during a power outage. The E615 tells you about the irregularity in input and memory. Solutions like- unplugging it, using a timer and using wifi sockets are convenient. That installation is incorrect. Do not advertise or try to compare pricing. Why do small African island nations perform better than African continental nations, considering democracy and human development? This might be a small installation error or a faulty setting. Ask Your Own HVAC Question b55db6.jpeg 6a7761.jpeg ee4ed0.jpeg cc7ba2.jpeg 8ec6a3.jpeg 32aa59.jpeg Heres the thing: Both cold and hot water need to be supplied using the same pipe. Just locate the air bleeder valve on top of the recirculation system. Therefore, the only task you can attempt on this list is the gasket replacement for the leaking water connection. Wash it under the water with a brush, let it dry, and then place it back. Recirculate temp in is 67, temp out when just recirculating is 67. if your water heater has 4 connections (CW in; HW out; condensate; gas) then the recirculation occurs within the water heater - IMO don't see the benefit in this setup as the water in the HW distribution system doesn't see flow . 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. If enabled you would find that your hot water is ready to go almost anytime you need it, without a long wait. The 3/4-inch pipe thread connectors are used to connect the pump to your existing pipes. Set the pump in the bucket and plug it in. The second method seems to suggest the cold water at sinks will most likely have been run through the hot water tank. Turns out, make sure you isolate the recirculation pump from the vibration. Connect a regular garden hose to the hot side service valve. 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. I agree the user manuals are very helpful. Rather than using the hard wired door bell style push button that comes with the kit, I bought this remote control unit (. So, there is such a thing. It means there is some issue with a water pressure sensor. It will help you avoid common water heater issues and let you operate the unit smoothly. Contents show However, many first-time and beginner road travelers and RV How to Connect a Generator to Your Tiny House Without a Transfer Switch. Buzzing noise out of the recirculation pump will be general if you or your plumber dont mount the pump securely. 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. How do hot water recirculation pumps work to get hot water fast? Then turn on the heater and then your pump. The leading causes of the intermittent flame; You can fix these issues by maintaining and cleaning the heater. 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. Most of information is available in the install manual but some of it requires a phone call to Navien support. To remedy the issue, consider increasing the gas supply to the heater. Step 1 Remove the plug from the socket on the end of the wire that connects to your circulator pump. Make sure to follow our instructions properly for the right application. If it does, you could trigger the operation to save money whenever your system detected 'away' or however you've got it programmed. DC Wire Gauge Calculator: What Gauge Wire (12V, 24V, 48V)? It also increases the gas bill. That means that all the costs of the hot water circulation pump are covered by the water savings. Actually the only real issue is the lack of isolation valve on the recirculation connection, resulting in the constant water supply to the water heater. 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. 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. Increase water pressure at the water heater. This is done every time you close the faucet. Remove the screw that secures the air intake filter and then remove the filter. However, if it generates annoying or buzzing noise, there is something wrong with the system. He obtained his Bachelor of Science degree from the University Of Texas at El Paso. Just like everything with these three characteristics, it is time-consuming and challenging. 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. Hi. Typically recirc lines connect at the furthest fixture and allows hot water to flow through the main trunk lines. We can go from there with up to 3 hours of dedicated live coaching on the telephone if needed. 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. What kind of range do you get from the remotes? 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. It tells you about the improper operation of the flow sensor. 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. Turn the unit off. What video game is Charlie playing in Poker Face S01E07? Next, hook hoses to the valves, then open them to drain the water. I mounted the contact switch inside the cabinet per the kit instructions. If the external recirc is set up without this it will just run, defeating the purpose of hot water on demand. Quite surprisingly for most homeowners, the biggest problem with this type of recirculation pump is getting cold water. 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. Place the filter assembly back into the water heater and secure it with the screw. Why Its Important To Turn Off The Water Recirculating Pump? Navien has an aftermarket add on hot point or something that lets you control when the recirc is on. 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. This extra pipe is installed parallel to conventional piping. However, the plumber branched this off into the circulation water inlet. 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. An example of data being processed may be a unique identifier stored in a cookie. It does save you water but it also costs you a bit of electricity. Parts that will actually be used depend on what kind of hot water recirculation pump you have. 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? If the problem does not get resolved, replace the motherboard or control board or hire a professional t do it. When attempting a flush of the system, I shut off the hot and cold valves that lead into the heater. You can also identify and fix them yourself. Also the unit needs to be set to utilize the recirculation feature. The E760 informs you that its time to flush your heater. But in my case its significant amount of time and it only really gets hot if I fully open the hot water at that faucet otherwise it is luke warm. Navien NPE-240s with external recirculating pump. You can tell because the cold supply line is connected to the circulating return. Thats why most homeowners prefer installing the recirculation pump without the extra pipe. There are no error codes showing. Great article!! Get a sump pump and connect the cold service hose to the sump pump. However, the plumber branched this off into the circulation water inlet. Just one Navien water heater manual for all NPE-A and NPE-S units. It should come out of the hot water port. Categories Home Improvement, Patio, Lawn & Garden, Plumbing, Tools, Water Valve Handle Broke Off? On-Demand Mode. Water recirculating pumps just circulate the water; the water pressure should stay the same. You can set it to run in the morning before work, and in the evening. Does It Save Money? And thats a wrap! In fact, however, the whole machinery of the hot water recirculating pump has to be activated for this to happen. 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. This Navien 30010780C Circulation Pump for NPE Series is a genuine OEM repair part. 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. Also you need not be concerned about pump damage. You will see in the photo that the cold water valve shuts off water into the domestic water inlet but doesn't have a shut off into the circulation water inlet. Next, check and remove the intake filter from the heater. When attempting a flush of the system, I shut off the hot and cold valves that lead into the heater. Therefore most homeowners try to cut down costs wherever possible, bypassing the recommended installation procedure. Make sure to follow the required instructions before and after you've turned it off for your safety. Reddit and its partners use cookies and similar technologies to provide you with a better experience. If the issue persists, contact your original installer or an NSS to service the sensor. Do you want to know the details? Follow the steps below to clean your Navien water heater; Note: If you are unsure of your ability to handle this task, hire a professional to clean the heater. The temperature sensor, on the other hand, makes sure you dont needlessly use too much energy to heat the water. We might be able to do something about it. Where does this (supposedly) Gibson quote come from? A hot water recirculating pump will save you money, especially if you have a larger family. I recently had a 240A2 installed. 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. 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. Eventually, they pay for themselves by reducing the water bills. Examine and clean the filter in a cold water inlet. Legal Disclosure:Lildutchuncle.com provides and shares information on plumbing, heating & air quality, home improvement, and other DIY projects. Go along the steps described below to set the recirculation settings. Are these pumps just a luxury that enables you to get hot water lightning fast, or do they actually save you money? Additionally, you can install a 5-micron filter in the water inlet right before the heater to remove impurities from the water. Hi Howy, well, the circulating pumps are usually powered by electricity, so they dont use gas. Both of those spots are problematic though. It clips on the side of the PCB board without screws and then you connect a ribbon cable to the PCB. That may present a problem in the summer when you need cold water; turning the pump off during the summer months solves the problem. Make sure the major electrical cord is grounded correctly. Save my name, email, and website in this browser for the next time I comment. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. It will make your water recirculating pump much smarter. It shows that the water adjustment valve is not operating properly. Press the reset button to reset your device. Reconnect the power supply to the water heater. Any thoughts on that? For more information, please see our 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. First, open and close the pressure relief valve, which is located near the units outlet. Now, you have to know the hows for reducing damage. Your question, can I turn off my hot water pump? has been answered. 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. Turning off the water recirculating pump isnt a big deal. What about adding the NaviLink WiFi board and controlling it from your phone anywhere? Besides, the E782 indicates that there is something wrong with the main panel communication. If you have a Navien tankless water heater this can be done by simply pressing a . When he is not busy trying not to electrocute himself, you can find him in the garden tending to his vegetables and chickens. Check the thermistors condition along with pump wiring connectors. Connect and share knowledge within a single location that is structured and easy to search. Yes, you can turn it off by yourself. If a hot water faucet is open, you can adjust the temperature only from 98-110 F (37-43 C). Here are some of the leading causes of cold water production; Which means there isnt enough time for the water to heat up. Grundfos small circulators are perfect as hot water recirculation pumps for commercial and domestic hot water applications. Theoretically Correct vs Practical Notation. where does the recirc line tie come off the hot lines? Is there a recirculating pump for the tankless water heater known as Trutankless? Depending on the age of your Navien NPE-A model, he did you a favor. $44.90. Hello Sam, you can shut off the recirculating pump to the kitchen faucet. 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. The water heater is set to 120 F (49 C) by default. It may not display this or other websites correctly. Examine the wiring and thermistors condition. Check this too: Electric RV Water Heater How to & Troubleshooting Guide. This requires the installation of an additional water pipe. Overusing your recirculating pump also increases your electricity bill. Solutions like- unplugging it, using a timer and using wifi sockets are convenient. 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. Where does the circulation return line tie in, and where is this in relation to the Naviien unit, other fixtures, and appliances in the home? 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? If the problem persists, call a technician to fix the unit. You just have to unplug the pump, and it will be turned off. However, that shouldnt happen if you have turned the pump off. air). Press the + (Up) or (Down) buttons until the desired temperature appears on display. 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. It only takes a minute to sign up. Can a Hot Water Recirculating Pump cause low water pressure? . Question: How is a water recirculating pump eco-friendly?Answer: The basic reason is, water recirculating pumps save water. The heater turns off automatically when the flue pipe surpasses 149 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. That is a premium service however. Thats 2,920 gallons of water per year wasted. The answer is that leftover water in the pipes has cooled over time. 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. Pour two gallons of white vinegar into a 5gallons bucket. Use your pump when you want to use it. Press question mark to learn the rest of the keyboard shortcuts. What effect does this have on gas usage for instant hot water? The recirculation timer is set to operate ever 15 minutes, even though we are often not at the property. If necessary, replace them all. We don't tend to provide any plumbing advice or any advice that should come from a certified professional. Let the vinegar cycle through the cold side for 45 minutes. 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. 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. 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. and our We trusted him and thought everything was just fine as we were getting hot water throughout the house. The consent submitted will only be used for data processing originating from this website. However, this is only a temporary fix. Make sure to follow the instructions before and after you turn off the pump. A loose part causing unnecessary vibrations, Vacuum in the water lines causing vibrations, A dirty flow sensor leading to gas flow interference and producing weird noises. air), Latent Heat (BTU/hr) = 0.69 x CFM x gr. Once the display stops flashing, the temperature setting is stored. You just have to set the timer as you use it. The main sign of motherboard or control board failure is intermittent switching off and on. However, the hot water had to travel from your water heater to the faucet for you to use. Why Does My RV Carbon Monoxide Detector Keep Going Off? All done in software. It has a timer that turns on the pump at regular intervals, mostly during peak usage times. The hot water recirculation pump works by: The very phrase recirculating comes from this pump returning the unused hot water back into the tank. You are using an out of date browser. Navien NaviCirc Recirculation Valve Description How it works Specifications Dimensions FREE Returns . On top of that, the recirculating pumps also return the cold water in the pipes back to the heater. The heating supply thermistor is defective. Otherwise, turn it off. Weve tried to include every concern you might have regarding turning off the water recirculating pump. Is it possible to create a concave light? We dont. I used a razor and carefully pried each side of the RM11 open to reach the programming switch. As an Amazon Associate we earn from qualifying purchases. How can this new ban on drag possibly be considered constitutional? The exhaust is overheating. We have some suggestions for you if you want to buy the best wifi sockets. 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. Side question: are you able to explain to me what always on means? This error informs you there is something wrong while you reset the unit. The pump works on the existing pipes; it basically sends the leftover water back to the boiler or the heater. I am contemplating getting the NPE-180A and controlling the pump with a remote control in each bathroom. Should I keep my 5-year-old electric tank heater as a storage unit if I am about to install a new gas tankless heater? Once again, there are a few different things it could be. 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. 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. Then, you can change the tank thermistor if needed. The electric recirculation pump uses this other pipe to pump the hot water back into the boiler or water heater. If yes, clean them. Ensure the recirculation pump was installed correctly. Its really an easy task to do. For example, you will see Navien error code 003 on the display screen, which means the igniter is malfunctioning. Only 13 left in stock - order soon. This may temporarily help to remedy the issue. Answer: It really depends on your model type. Open the service port on the host side and the isolation valve on the cold side, pushing water through the system. From the valve, try to loosen up the cap to remove air from the system. This time of year, we dont need to have instant hot water circulating so we turned off the pump. Turn the pump off and dump the vinegar. To reduce that time significantly (and stop needlessly wasting water), we can install hot water recirculating pump. I have a new Noritz tankless water heater that includes an AquaMotion recirculating pump at the heater and a crossover valve under the kitchen sink. Below, I will break down everything to stop the buzzing noise. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. How do I align things in the following tabular environment? 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. It can occur due to an open or short sensor. The exhaust thermostat is malfunctioning. Here is the final install. Do the plumbers explanations make any sense at all or does it sound like BS? 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. The disadvantages of recirculating pumps include waiting for cold waters (its a less-known disadvantage), having to install additional wiring, and so on. 2. Press the Power button on the front panel to turn on the water heater. I have alos checked my HeatBox settings to ensure the temp is set high enough for my domestic supply (set to around 120 degrees). 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. Let's hop in! Most importantly, the installer fails to mount the pump on the vibration isolators. You can isolate the pump from the vibration in two ways. (+ Installation Costs), How Many Amps Does A Tankless Water Heater Use? If your system is re-circed as close as possible to the fixtures (ask yourself do I have two hot waterlines for each fixture?) 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). On a side note, if your Grundfos circulating pump is making sounds, it may have air locks or installation problems. Why Does My Stiebel Eltron Tempra High-limit Switch Keep Tripping. This on-demand water heater has a lower carbon footprint, is energy efficient, and has a longer lifespan. Now, that comes to the question, can I turn off my hot water recirculating pump? Your Navien Recirculation Pump will make a humming noise like a refrigerator if you dont bleed the air out of the recirculation system. First, find the control panel on the front of the unit. To select a recirculation mode, you must set the DIP switches on the front panel, and set the position of the 2-way valve inside the water heater. 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. It shows that the heating return thermistor is not working correctly. Here are some simple instructions on how to turn on your Navien tankless water heater. Locate the power button and press it to turn on the heater. Also, as I'm taking a closer look at it, I'm concerned that some key things may be amiss. Navien's patented ComfortFlow system is the first to include a buffer tank, recirculation pump and fine-tuned controls into a tankless water heater, resolving the cold-water sandwich effect* and issues of minimal flow rates commonly found in other tankless water heaters. You can turn it off during work hours, over the night, when you go on vacations, and so on. For a better experience, please enable JavaScript in your browser before proceeding. The only place that quickly gets hot (and really hot) is the guest bath which happens to be right next to the water heater. 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. First, place a thick rubber between the pump and anything it will be mounted on. 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. Can you turn it off in a tankless that has it built in? Purchasing a timer will also fix the problem. You will not get hot water instantly. It means there is some issue with the OT-remote controllers operation. It is located on the lowest corner opposite the on and off button. 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). This chapter will reveal all the possible culprits that cause the recirculation pump of your Navien to make a humming noise. Not sure I am understanding. We have 6 Navien NR-210A manuals available for free PDF download: Service Manual, Operation & Installation Manual, Installation Manual, Owner's Operation Manual, Quick Installation Manual Navien NR-210A Service Manual (179 pages) NR/NP Series Tankless Gas Water Heater Brand: Navien | Category: Water Heater | Size: 21.79 MB Table of Contents Refer to the user manual to locate the Hot Button and then press it to activate hot water recirculation. Making statements based on opinion; back them up with references or personal experience. It sounds almost like cavitation or a magnet rubbing against the casing as the recirculating pump winds down.
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