Save my name, email, and website in this browser for the next time I comment. We have a standard gas hot water heater with a circulating pump. Im interested in information on a tankless water heater with a built in recirculating pump. 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. Otherwise, turn it off. On-Demand Mode. Advantages and disadvantages of hot water circulation pumps. What video game is Charlie playing in Poker Face S01E07? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. You will not get hot water instantly. 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 main sign of motherboard or control board failure is intermittent switching off and on. Turn off the device for 30 minutes and then restart it. 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 All you have to know is how to turn it off. But, making sure youre doing it the right way is important. Power Waste Get in touch with Navien technical support at 800-519-8794. It will help you avoid common water heater issues and let you operate the unit smoothly. It also increases the gas bill. 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. Most importantly, the installer fails to mount the pump on the vibration isolators. The cold water pipe coming from the wall goes into the domestic water inlet on the tankless heater, as it should. Some sort of noise out of your Navien recirculation pump is normal. It is important to note that recirculation pumps dont work continuously; they are used only when we open and close the faucet. You can return the item for any reason in new and unused condition: no shipping charges ; W2 Wire Thermostat Wiring (2nd Stage), Thermostat Wire Color Codes For 3-8 Wire Thermostats (Color-By-Color), How Many Therms Of Gas Per Month Is Normal? Hi Howy, well, the circulating pumps are usually powered by electricity, so they dont use gas. Thanks for contributing an answer to Home Improvement Stack Exchange! Foreign materials like small pebbles may get into the recirculation pump. For more information, please see our Low gas supply which prevents proper heating of water, Damaged flow sensor preventing proper supply of gas to the heater. After using this amount of time, hardware gets old and starts to malfunction. Also, check the feeder valve and pressure relief valves activity. This chapter will reveal all the possible culprits that cause the recirculation pump of your Navien to make a humming noise. It can occur due to an open or short sensor. Then what are we waiting for? 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. Also you need not be concerned about pump damage. However, the plumber branched this off into the circulation water inlet. The filter is located at the top left of the water heater. 1. 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. How do hot water recirculation pumps work to get hot water fast? If you have a Navien tankless water heater this can be done by simply pressing a . 30000466A Navien Circulation Pump NAPU9GLPCT33 . 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? However, the hot water had to travel from your water heater to the faucet for you to use. To understand this problem what I am talking about, you can watch this video: First off, I recommend you check the primary loop. Besides, the E782 indicates that there is something wrong with the main panel communication. A hot water recirculating pump will save you money, especially if you have a larger family. From the valve, try to loosen up the cap to remove air from the system. 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? Is the plumbers reasoning valid here? 5.0 out of 5 stars 3 ratings. $257.16. When attempting a flush of the system, I shut off the hot and cold valves that lead into the heater. Press the + (Up) or (Down) buttons until the desired temperature appears on display. Next, hook hoses to the valves, then open them to drain the water. Then replace the heater cover and turn the gas or power back on. Hi Christopher, not really. The cold water pipe coming from the wall goes into the domestic water inlet on the tankless heater, as it should. So, saving water is the main reason for calling a recirculation pump eco-friendly. Go along the steps described below to set the recirculation settings. Privacy Policy. Here is the summary of all the negative aspects of hot water circulation pumps: This is the key question. Thats why most homeowners prefer installing the recirculation pump without the extra pipe. 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 major difference with hot water pumps in new homes is that you can install a full recirculation pump system (Type #1). qc = the circulating water flow [m3/s] Both of those spots are problematic though. An example of data being processed may be a unique identifier stored in a cookie. 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. Get in touch with Navien technical support or a professional heater repairman to fix the issue. Connect and share knowledge within a single location that is structured and easy to search. 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. 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. Can this be moved to another sink in the house that is not used as often ? 2. This may temporarily help to remedy the issue. 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. I have a tankless water heater with an external recirculating pump at the heater and a crossover valve under the kitchen sink. I broke down all the possible reasons that cause your Navien Recirculation Pump to produce a humming noise. First, open and close the pressure relief valve, which is located near the units outlet. The average electric tankless water heater needs at least 120 amps to work. If the problem persists, call a technician to fix the unit. rev2023.3.3.43278. Ensure the recirculation pump was installed correctly. If you fail to stop the noise after trying all the steps I mentioned, I bet there is a complex problem with the unit. Quick summary on costs: Recirculating a pump is certainly useful if you want hot water quickly. Now, when installed, the recirculating pump makes it seem that the hot water starts flowing right away like magic. Eric Alvarez is an HVAC guy based in El Paso, Texas, United States. Press the M (menu) button on the front panel and choose the 1. Remove the inlet filter and wash it under the running water with the help of a brush. A hot water recirculation pump can be sized for a given system using the following formulas: Water flow qc = /T x 4200 Also, make sure you get the 1- pipe for the horizontal manifold, which will help even out the flow of the recirculators. This requires the installation of an additional water pipe. That is a premium service however. Sold by HVAC Pros and ships from Amazon Fulfillment. Our articles, products and services are for informational purposes. Timers and wifi sockets are quite cheap. Examine the wiring and thermistors condition. 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. (With Water Savings Analysis), Note On Tankless Water Heater Hot Water Recirculation Pumps (Double Trouble), How Much Electricity Does A Tankless Water Heater Use? Make sure to follow the required instructions before and after you've turned it off for your safety. Empties the water pipes so the next time youll need hot water fast, it will meet less resistance in the piping and it will arrive at the faucet in a matter of seconds. You can set it to run in the morning before work, and in the evening. Minimising the environmental effects of my dyson brain. (+ Calculator), 5 Best Air Purifiers For Allergies In 2023 (+ H13 Medical-Grade HEPA Filters), Is A Tankless Water Heater Worth It? It tells you about the improper operation of the flow sensor. To create an energy-efficient full recirculation system, your pump has to come with these two efficiency optimizing parts. Works great and saves the copper pipes. Disconnect the power supply to the water heater. Turn the unit off. Solution: Ensure all return and supply lines are open and check the 2-way valve's direction. All in all, its important to understand that recirculation pumps are worth the money. This breaks down the scale and flushes out the sediment. Patrick. The pump works on the existing pipes; it basically sends the leftover water back to the boiler or the heater. 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. 10.6 Maintenance 10.7.3 NPE-180A/240A Pump P-Q Curve The Navien NPE-180A and NPE-240A water heaters that are used . And the heater has been set to recirculation mode. 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. I connected the Hot Button control board to the main PCB per the instructions. You May Forget to Purge The Recirculation Pump, 03. 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). Turn the pump off and dump the vinegar. Do you want to know the details? These processes are so easy that you can even install a water recirculating pump by yourself! This happens when you have a huge heater and lower gas output. It is located on the lowest corner opposite the on and off button. The bigger the house, the longer these water pipes usually are, and the longest it takes to get hot water. It looks like you're using an ad blocker. last week. Does anybody have any thoughts of what I should get checked out? I am having issues with it ever since: water to certain places in my house seems to just stay warm (kitchen sink and master bathroom) unless I fully open the faucet all the way on hotand then still I have to wait a minute plus for the water to heat up. The temperature sensor, on the other hand, makes sure you dont needlessly use too much energy to heat the water. I'm fairly handy with DIY plumbing, but not and expert and I know when I am out of my league. 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. First, place a thick rubber between the pump and anything it will be mounted on. You can crack open the manual for your tankless heater and check if it comes with that option. 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. but you stopped short for me. That may present a problem in the summer when you need cold water; turning the pump off during the summer months solves the problem. This Navien 30010780C Circulation Pump for NPE Series is a genuine OEM repair part.