You dont have to install an additional pipe. 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? Types of water circulation pumps, including tankless water heater recirculation pumps. Hello Sam, you can shut off the recirculating pump to the kitchen faucet. Foreign materials like small pebbles may get into the recirculation pump. This time of year, we dont need to have instant hot water circulating so we turned off the pump. [Fix It Easily], Ball Valve Handle Broke Off [Step By Step Solutions]. I have 5 connections including the recirculation in. Then turn on the heater and then your pump. The water heater will retain your settings during a power outage. Quite surprisingly for most homeowners, the biggest problem with this type of recirculation pump is getting cold water. 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. Ensure the recirculation pump was installed correctly. 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 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. 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. Turn off the device for half an hour and confirm everything is working correctly. 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. Turn off your main water valve if you are going on vacation. When I hooked hoses to the service pipes, the system still produced a strong, steady flow of water, seeming to not drain. Turns out that it was the temperature of the return water was high enough to stop the recirculation. Great article!! 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. Below are different Navien water heater error codes and their solutions; Navien error code 003 how to fix indicates that there is an ignition failure in your unit. 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. I'm fairly handy with DIY plumbing, but not and expert and I know when I am out of my league. Open the hot and cold service ports and turn the pump on. Fortunately, Navien water heaters recycle hot water and always provide hot water. You can return the item for any reason in new and unused condition: no shipping charges ; Besides, the E782 indicates that there is something wrong with the main panel communication. You can isolate the pump from the vibration in two ways. The operations manuals above cover all Navien NPE-A and NPE-S series condensing tankless water heaters. 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. Increase water pressure at the water heater. Asking for help, clarification, or responding to other answers. Save my name, email, and website in this browser for the next time I comment. If you have come back from a vacation, first turn on the main water valve. The DIP switch setting has some problems. Pump the white vinegar into the cold side, up through your water heater, and out the hot side. 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. Any tips on where to verify if I have a dedicated return line? Carbon monoxide (CO) is a tasteless, colorless, odorless, and highly poisonous gas which can be deadly to humans in high concentrations. Error Code E438 It means the circulation pump is not working correctly. Do you want to know the details? air). Did you mount the contact switch next to the Navien? This on-demand water heater has a lower carbon footprint, is energy efficient, and has a longer lifespan. 2. Is there a way to tell if the cold pipe is circulatory/return line or cold water from the mains? Is there a check valve? It sounds awful and not like any other recirculating pump I've ever heard. And thats a wrap! Make sure the electrical cord is grounded. How? The cold water pipe coming from the wall goes into the domestic water inlet on the tankless heater, as it should. 2. Is this correct for the function of the system? Where did you find that info? When the heat exchanger starts to crack, it creates a gap that can escape toxic exhaust gasses. What video game is Charlie playing in Poker Face S01E07? It's unfortunate he's not around to explain all this to you. I may be able to correct this if I solve the mystery on where the dedicated return line might be. You can set it to run in the morning before work, and in the evening. Unscrew the plug cover with a suitable screwdriver to remove it. This serves two functions: You save water. The cold water inlet one thermistor is defective. If we dont use it, we waste a lot of water. It means the circulation pump is not working correctly. There are several ways to do it. It has a timer that turns on the pump at regular intervals, mostly during peak usage times. Note: Remember to turn off power to the heater before replacing the gasket. 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? To understand this problem what I am talking about, you can watch this video: First off, I recommend you check the primary loop. Therefore, when it malfunctions, it is a sign that the heater has another major underlying issue. So, there is such a thing. Make sure the exhaust pipe is not obstructed. I bought the. If pointed in the right direction, though, I might be able to solve this. The timer has control over when the pump is working continuously. Turning off the water recirculating pump isnt a big deal. A family of 4 with normal water usage can expect to save $50-$75 a year. For example, if you have a person showering and another individual shaving. Circulation pumps can wreck havoc on your lines if you run them constantly due to friction at bends causing pinhole leaks. Turns out, make sure you isolate the recirculation pump from the vibration. It is located on the lowest corner opposite the on and off button. This Navien 30010780C Circulation Pump for NPE Series is a genuine OEM repair part. Ask an Expert Home Improvement Questions HVAC Questions Navien NPE-240s with external recirculating pump. Inspect the water feeder valve, water pressure, and water pressure relief valve. Reconnect the power supply to the water heater. Does anybody have any thoughts of what I should get checked out? Also, as I'm taking a closer look at it, I'm concerned that some key things may be amiss. Here are four problems with these pump systems that you should be aware of. Turn the unit off. 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. We want to reduce waste in using water given our well situation. I got a Navien NPE 240A2 installed in my home with dedicated recirculating line (hopefully I got the lingo right!) Its really an easy task to do. By installing a hot water circulation pump, you will have a hot shower right away. Connect and share knowledge within a single location that is structured and easy to search. This happens when you have a huge heater and lower gas output. Your article ended saying All in all, its important to understand that recirculation pumps are worth the money. 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. Also, check if the electrical cord is grounded correctly or not. It also increases the gas bill. How is an ETF fee calculated in a trade that ends in less than a year? 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? We might be able to do something about it. 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? You can replace the sensor if needed. Heres the thing: Both cold and hot water need to be supplied using the same pipe. Fits These Models Now, when installed, the recirculating pump makes it seem that the hot water starts flowing right away like magic. 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. This is because the sensors are corroded over time which causes them to shut the heater down. If enabled you would find that your hot water is ready to go almost anytime you need it, without a long wait. 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. The large valves should be in the off position, whereas the service valves should be in the on place. 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. Patrick. 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. This time of year, we dont need to have instant hot water circulating so we turned off the pump. Make sure to follow the required instructions before and after youve turned it off for your safety. A hot water recirculating pump will save you money, especially if you have a larger family. 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]. And the heater has been set to recirculation mode. They are not without upfront costs or disadvantages. It looks like you're using an ad blocker. Putting one recirc line in won't turn a line and branch system into a loop system automatically. 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. The E760 informs you that its time to flush your heater. If it does, you could trigger the operation to save money whenever your system detected 'away' or however you've got it programmed. You can turn off the recirculating pump in various ways. The recirculation pump will make a squeaking noise if the installer fails to install the primary loop correctly. You can crack open the manual for your tankless heater and check if it comes with that option. We can go from there with up to 3 hours of dedicated live coaching on the telephone if needed. T = the water cooling, normally 5 C determined at the farthest consumption point [C]. First, place a " thick rubber between the pump and anything it will be mounted on. It means there is some issue with the OT-remote controllers operation. For example, if you get the tees backward, the recirculation pump will not function properly. If youre using this pump and cant fix it yourself, you can call a professional mechanic to fix it. It sounds almost like cavitation or a magnet rubbing against the casing as the recirculating pump winds down. 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. When its time to work with a recirculating pump, you should follow some instructions to avoid further hassles. Start by turning off the service valves and removing the hoses. The pump works on the existing pipes; it basically sends the leftover water back to the boiler or the heater. Remove and clean the cold air intake filter. With the NRCR you can set your own schedule with a remote accessory and tailor the integrated pump to your lifestyle or scheduled needs. Contents show 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. After draining a few hot water tanks over the years, removing sediment, will the cold water now possibly have some sediment and/or taste issues. Do the plumbers explanations make any sense at all or does it sound like BS? Continue with Recommended Cookies. Our articles, products and services are for informational purposes. Reddit and its partners use cookies and similar technologies to provide you with a better experience. The buffer tank eliminates the "cold water sandwich" effect and issues of minimum flow rates commonly found in other tankless water heaters. Unfortunately, the heat exchanger cannot be fixed and has to be replaced. If you have a Navien tankless water heater this can be done by simply pressing a .