There is something wrong with limit control. In compliance with California's . Question: How is a water recirculating pump eco-friendly?Answer: The basic reason is, water recirculating pumps save water. The E760 informs you that its time to flush your heater. To change the water temperature; Check this too: Richmond Water Heater How to & Troubleshooting Guide. link to Why Does My RV Carbon Monoxide Detector Keep Going Off? The 3/4-inch pipe thread connectors are used to connect the pump to your existing pipes. Neither reason is likely to be correct but we would need a much more in depth knowledge of the hot water distribution system and the circulation line in particular. Our goal here at GridSub is to help you find viable solutions to different off-grid problems. I agree the user manuals are very helpful. Eric Alvarez is an HVAC guy based in El Paso, Texas, United States. It tells you about the improper operation of the flow sensor. The disadvantages of recirculating pumps include waiting for cold waters (its a less-known disadvantage), having to install additional wiring, and so on. Answer: It really depends on your model type. 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. Make sure the major electrical cord is grounded correctly. 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. This depends on how long you leave it on and how often you use it. On a side note, if your Grundfos circulating pump is making sounds, it may have air locks or installation problems. Here are some simple instructions on how to turn on your Navien tankless water heater. Solar panels, wiring, old TVs and sometimes DIY powerwalls. Advantages and disadvantages of hot water circulation pumps. Navien has an aftermarket add on hot point or something that lets you control when the recirc is on. The circulation return needs to come from a loop at an end of the hot supply line. If your system displays this code, you need to confirm the water pressure is within good ranges. We want to reduce waste in using water given our well situation. It is affordable and can easily fix your problem. 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). Note: Remember to turn off power to the heater before replacing the gasket. Ensure the recirculation pump was installed correctly. 08. It only takes a minute to sign up. (42-167 Amps), How Much Propane Does A Tankless Water Heater Use? Heres the thing: Both cold and hot water need to be supplied using the same pipe. Find applications from Grundfos related to this subject. Hello Lucy, in most cases, you have that option. Ensure that all hot water faucets are closed, and ensure that the internal circulator and any external circulating pumps are off. Depending on the age of your Navien NPE-A model, he did you a favor. Our articles, products and services are for informational purposes. Make sure to follow the required instructions before and after youve turned it off for your safety. However, the unit comes equipped with a standard 120V appliance cord and operates between 200 and 300 watts. Circulation pumps can wreck havoc on your lines if you run them constantly due to friction at bends causing pinhole leaks. Also, turn off the water heater, and recirculate the pump. Purchasing a timer will also fix the problem. The heater turns off automatically when the flue pipe surpasses 149 degrees Fahrenheit. I recall it was p23 but it was definitely larger than p20. It also may be as simple as a dip switch in the tankless unit itself. Get in touch with Navien technical support or a professional heater repairman. Error Code E438 It means the circulation pump is not working correctly. How Does A Hot Water Recirculation Pump Work? 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. What video game is Charlie playing in Poker Face S01E07? 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. Cookie Notice Free returns are available for the shipping address you chose. Does anyone know the logic behind how Navien controls their internal recirculation pump when it is circulating with an external loop? You can turn off the recirculating pump in various ways. 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. On top of that, the recirculating pumps also return the cold water in the pipes back to the heater. Navien NaviCirc Recirculation Valve Description How it works Specifications Dimensions Create a chart to regulate hot water usage. The recirculation pump saves on water bills by reducing the time to get hot water. You mentioned that in the summer months your can turn off the recirculation pump. Your article ended saying All in all, its important to understand that recirculation pumps are worth the money. Examine and clean the filter in a cold water inlet. I bought the. (std. Therefore, I can't drain the system. To create an energy-efficient full recirculation system, your pump has to come with these two efficiency optimizing parts. The error code E445 tells about the defect of the bypass mixing valve. Make sure the electrical cord is grounded. Get it as soon as Wednesday, Mar 1. Continue with Recommended Cookies. It sounds awful and not like any other recirculating pump I've ever heard. Examine and confirm the pressure sensor and wiring are in good condition. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Can this be moved to another sink in the house that is not used as often ? 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. Always on checks in every 30 minutes and turns on the heat recirculation if the water is 9 degrees under the water goal temp. Types of water circulation pumps, including tankless water heater recirculation pumps. Follow Up: struct sockaddr storage initialization by network format-string, Bulk update symbol size units from mm to map units in rule-based symbology, Short story taking place on a toroidal planet or moon involving flying. The best answers are voted up and rise to the top, Not the answer you're looking for? Having a tankless water heater is an energy-efficient way of getting hot water. 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 . A family of 4 with normal water usage can expect to save $50-$75 a year. That may present a problem in the summer when you need cold water; turning the pump off during the summer months solves the problem. Therefore most homeowners try to cut down costs wherever possible, bypassing the recommended installation procedure. It depends on how the recirculation pump is installed, and some other factors, plumbers usually know this stuff pretty well. Open the pressure relief valve. Check the wiring and cold water inlet two thermistors and make sure both are in good condition. Think hot water loops returning to your boiler to get reheated (to stay hot) Think LOOPS!! Remove and clean the cold air intake filter. If it does, you could trigger the operation to save money whenever your system detected 'away' or however you've got it programmed. The buffer tank eliminates the "cold water sandwich" effect and issues of minimum flow rates commonly found in other tankless water heaters. It should come out of the hot water port. Making statements based on opinion; back them up with references or personal experience. If any of them are loose or disconnected, your circulator pump won't work. Normally uncontrolled pumps are used as the flow variation is relatively small. This item: Navien 30010780B Circulation Pump. We might be able to do something about it. 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? I have alos checked my HeatBox settings to ensure the temp is set high enough for my domestic supply (set to around 120 degrees). The filter is located at the top left of the water heater. 2 Types Of Hot Water Recirculation Pumps Used In Homes, Type 2: Recirculating Home Pump Comfort System, Advantages And Disadvantages Of Hot Water Recirculation Pumps, How Much Do Hot Water Circulation Pumps Cost + Installation Cost + Running Cost? Hi Christopher, not really. Turn off the recirculation when the house is not occupied, in order to save even more energy. Using a corrosion-free flow sensor made of stainless steel is a better option. If the problem persists, call a technician to fix the unit. Yes, you can turn off your hot water recirculating pump. The temperature sensor, on the other hand, makes sure you dont needlessly use too much energy to heat the water. Its really an easy task to do. Check if there is any gas leakage before turning it on after a couple of days. 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. What Is the Difference Between 'Man' And 'Son of Man' in Num 23:19? I mounted the contact switch inside the cabinet per the kit instructions. Unfortunately, the heat exchanger cannot be fixed and has to be replaced. 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. 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. Disconnect the power supply to the water heater. By installing a hot water circulation pump, you will have a hot shower right away. Remove the screw that secures the air intake filter and then remove the filter. Save my name, email, and website in this browser for the next time I comment. This happens when you have a huge heater and lower gas output. Hi Patrick, thats a good insight. 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 your water heater has 5 connections ( CW in; HW out; Recirc in; condensate ; gas) then the recirculation is coming backing to the water heater. 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. Is this noise normal coming from my Navien tankless heater? The default setting is usually around 120 degrees Fahrenheit. Create an account to follow your favorite communities and start taking part in conversations. sounds like you need a different plumber to assess your situation. Contents show This time of year, we dont need to have instant hot water circulating so we turned off the 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! Solution: Ensure all return and supply lines are open and check the 2-way valve's direction. What Parts Are In The Hot Water Circulation Pump Kits? This is where the timer and temperature sensor come in. Turn off the power before removing the filter. And. Navien Flow Sensor. 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. If the issue persists, contact your original installer or an NSS to service the sensor. To learn more, see our tips on writing great answers. 2. Reinsert the filter into the plastic assembly. Turns out, make sure you isolate the recirculation pump from the vibration. Many systems turn on and off automatically to keep the water within a specified temperature range. [Fix It Easily], Ball Valve Handle Broke Off [Step By Step Solutions]. However, the hot water had to travel from your water heater to the faucet for you to use. The recirculation timer is set to operate ever 15 minutes, even though we are often not at the property. Those are quite significant savings. 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. Examine and wash the intake air filter underneath running water using a toothbrush. This on-demand water heater has a lower carbon footprint, is energy efficient, and has a longer lifespan. How do I align things in the following tabular environment? This may temporarily help to remedy the issue. That means that this household wasted 8 gallons of water per day just waiting for hot water. Water recirculating pumps just circulate the water; the water pressure should stay the same. Thats why turning off your pump is important when youre not using it. The electric recirculation pump uses this other pipe to pump the hot water back into the boiler or water heater. The cold water inlet one thermistor is defective. You can isolate the pump from the vibration in two ways. After using this amount of time, hardware gets old and starts to malfunction. It shows that the water adjustment valve is not operating properly. Weve tried to include every concern you might have regarding turning off the water recirculating pump. Otherwise, turn it off. There are no error codes showing. Get in touch with Navien technical support at 800-519-8794. Place a bucket underneath it to catch any water that drains when you remove the filter. While you may have a general understanding of the listed electrical issue above, you should not attempt to handle any electrical work unless you are a licensed electrician. Allow the vinegar to circulate through the heater for a minimum of one hour (longer if the pump runs at less than four gallons per minute). This is the system you can see in the photos above. Press the Power button on the front panel to turn off the water heater. What kind of range do you get from the remotes? Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. You can isolate the pump from the vibration in two ways. Check this too: Electric RV Water Heater How to & Troubleshooting Guide. However, this is only a temporary fix. The Navien is smart enough to stop recirculation when it recognises hot water has made the entire loop. Since pumps cost about $200 each, the recirculating pump will pay for itself in 3-4 years. Thanks! Or invest in a larger water heater. The water heater is set to 120 F (49 C) by default. Reconnect the power supply to the water heater. First, find the control panel on the front of the unit. Hopefully its clear which is which when Im down there. Does anybody have any thoughts of what I should get checked out? Can I swap out the mainboard in the NR240A to an NPE240A board to get all that features? 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. Therefore, the total peak demand of hot water needed is the ideal size of the heater you should get. Did you mount the contact switch next to the Navien? The pump works on the existing pipes; it basically sends the leftover water back to the boiler or the heater. At the same time, someone is in the kitchen doing the dishes. If enabled you would find that your hot water is ready to go almost anytime you need it, without a long wait. You can turn it off during work hours, over the night, when you go on vacations, and so on. 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. Pump the white vinegar into the cold side, up through your water heater, and out the hot side. 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. Is the plumbers reasoning valid here? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The pump saves this cold water and recirculates it in the hot water. First, open and close the pressure relief valve, which is located near the units outlet. House generators are quite expensive. 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? Once again, there are a few different things it could 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. 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. rev2023.3.3.43278. Note on tankless hot water heater recirculation pumps (double trouble solved). 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. 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. If your system is re-circed as close as possible to the fixtures (ask yourself do I have two hot waterlines for each fixture?) 1. It shows that the heating return thermistor is not working correctly. It usually occurs due to an open or shorted sensor. 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've bled the system top and bottom and even removed the return line then switched to internal pump yet it still makes this noise. Next, check and remove the intake filter from the heater. He says both the master bath and the kitchen. Prevention of Modern Slavery Progress Reports. Just locate the air bleeder valve on top of the recirculation system. Any tips on where to verify if I have a dedicated return line? 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. It means there is some issue with the OT-remote controllers operation. What about adding the NaviLink WiFi board and controlling it from your phone anywhere? Then, tighten up the cap again once you remove all the air from the loop. I may be able to correct this if I solve the mystery on where the dedicated return line might be. There are more options, for example- you can buy a wifi socket. Nobody really likes waiting for the hot water to start flowing under the shower or doing the dishes, for example. (1000-3000+ Sq Ft Homes), Thermostat Says Heat On But No Heat? It is propelled only by water pressure.