Most importantly, the installer fails to mount the pump on the vibration isolators. Take care! Otherwise, this will cause the shut-off valve to get damaged. Dont hesitate to switch the tees around if you get them backward. We hope we were able to help you out with our guide. This gives you a negative return on investment (ROI), so. 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. Thats 2,920 gallons of water per year wasted. Grundfos small circulators are perfect as hot water recirculation pumps for commercial and domestic hot water applications. Tankless Water Heater Wire Size Calculator: What Gauge Wire (AWG)? Save my name, email, and website in this browser for the next time I comment. Check if there is any gas leakage before turning it on after a couple of days. Always on checks in every 30 minutes and turns on the heat recirculation if the water is 9 degrees under the water goal temp. Get a sump pump and connect the cold service hose to the sump pump. 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 . This gives users hot water when they need it, saving water and money. Consider yourself lucky if this installation hasn't damaged your circulating pump inside the unit. Circulation pumps can wreck havoc on your lines if you run them constantly due to friction at bends causing pinhole leaks. Hello David, well, the additional costs are a con here. We have a standard gas hot water heater with a circulating pump. That's an interesting solution. Do the plumbers explanations make any sense at all or does it sound like BS? There are no error codes showing. Ensure that all hot water faucets are closed, and ensure that the internal circulator and any external circulating pumps are off. For more information, please see our 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. You can tell because the cold supply line is connected to the circulating return. Press the Power button on the front panel to turn off the water heater. All done in software. This is the system you can see in the photos above. With the NRCR you can set your own schedule with a remote accessory and tailor the integrated pump to your lifestyle or scheduled needs. Is there a recirculating pump for the tankless water heater known as Trutankless? 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 it possible to create a concave light? Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Side question: are you able to explain to me what always on means? This requires the installation of an additional water pipe. To understand this problem what I am talking about, you can watch this video: First off, I recommend you check the primary loop. Thats why turning off your pump is important when youre not using it. 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 . (std. 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. Get in touch with Navien technical support at 800-519-8794. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Free returns are available for the shipping address you chose. The buffer tank eliminates the "cold water sandwich" effect and issues of minimum flow rates commonly found in other tankless water heaters. Because a water recirculating pump provides us instant hot water. 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. 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? Do we keep the flames on after cooking? If it does, you could trigger the operation to save money whenever your system detected 'away' or however you've got it programmed. Question: Can a recirculating pump last for 10-15 years?Answer: If you use it properly, it should last at least 10-15 years. The operations manuals above cover all Navien NPE-A and NPE-S series condensing tankless water heaters. The temperature sensor, on the other hand, makes sure you dont needlessly use too much energy to heat the 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. There are filters that prevent the sediment from entering the water flow. Then, read the manual on Navien tankless water heater how to reset. 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 I imagined would happen is 3-4 seconds of cold and then super hot water that was just waiting for me from the recirculation. It sounds almost like cavitation or a magnet rubbing against the casing as the recirculating pump winds down. The Navien is smart enough to stop recirculation when it recognises hot water has made the entire loop. Examine and wash the intake air filter underneath running water using a toothbrush. If your system is re-circed as close as possible to the fixtures (ask yourself do I have two hot waterlines for each fixture?) The average electric tankless water heater needs at least 120 amps to work. FREE Returns . Hi: Ensure the recirculation pump was installed correctly. Remove the intake filter and properly wash it using a brush beneath running water. 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. Fits These Models We can go from there with up to 3 hours of dedicated live coaching on the telephone if needed. The estimated annual operating cost of the Navien tankless water heater, based on the yearly estimated residential use per US Energy Department test criteria, is $191. House generators are quite expensive. Patrick. Hello Irving, Trutankless is an Arizona-based brand of tankless water heaters with built-in recirculation pumps. 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. It is important to note that recirculation pumps dont work continuously; they are used only when we open and close the faucet. 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 . This error informs you there is something wrong while you reset the unit. Turn off the power before removing the filter. You mentioned that in the summer months your can turn off the recirculation pump. Make sure the exhaust pipe is not obstructed. 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. 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? Some brands/models dont include it. Some pumps, in order to avoid needing a dedicated return path, will recirculate the water via the cold water supply, so getting some hot water from the cold supply would be normal in this case. Perhaps not everyone is familiar with the newer manual. Where does this (supposedly) Gibson quote come from? Hi. 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. When you turn on the shower or a faucet, do you get hot water instantly? First, you need to consider Things to consider when sizing the busiest usage period or peak time. Then re-insert the filter and screw it back in place. Then check to see if the plumbing lines and the heaters water lines are clogged. This depends on how long you leave it on and how often you use it. So, get 2 braided ss flex connectors and install them on the inlet and the outlet of the pump. 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. This item: Navien 30010780B Circulation Pump. Return this item for free. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Solution: Ensure all return and supply lines are open and check the 2-way valve's direction. Also, did you wire the PB from the Hot Button kit or only use the remote? There are special tankless water heater recirculation pumps for Navien, Rinnai, and Rheem units; we will cover them all. Call Navien and explain if yours is older. It can also damage your main water heater and can create recirculation problems. I guess the recirculation line will be the only one that is copper. However, the plumber branched this off into the circulation water inlet. Carbon monoxide (CO) is a tasteless, colorless, odorless, and highly poisonous gas which can be deadly to humans in high concentrations. First, find the control panel on the front of the unit. Only 19 left in stock - order soon. To learn more, see our tips on writing great answers. Can I swap out the mainboard in the NR240A to an NPE240A board to get all that features? You must log in or register to reply here. 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. Press the Power button on the front panel to turn on the water heater. (Per Hour, Month, Year), How Much Does A Tankless Water Heater Cost? The electric recirculation pump uses this other pipe to pump the hot water back into the boiler or water heater. Step 1 Remove the plug from the socket on the end of the wire that connects to your circulator pump. This serves two functions: You save water. Quick summary on costs: Recirculating a pump is certainly useful if you want hot water quickly. The second method seems to suggest the cold water at sinks will most likely have been run through the hot water tank. Set the pump in the bucket and plug it in. SEER = (1 EER100% + 42 EER75% + 45 EER50% + 12 EER25%)/100, Total Heat (BTU/hr.) If this does not work, hire a professional to repair or replace any damaged parts. To change the water temperature; Check this too: Richmond Water Heater How to & Troubleshooting Guide. 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. Your question, can I turn off my hot water pump? has been answered. 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. 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 It sounds awful and not like any other recirculating pump I've ever heard. Using a corrosion-free flow sensor made of stainless steel is a better option. Why isn't my Navien tankless water heater performing as it should? Separate Recirculation Pumps. And thats a wrap! Those are quite significant savings. The E760 informs you that its time to flush your heater. Save my name, email, and website in this browser for the next time I comment. I have the newest version pcb since I just bought the tankless. Typically recirc lines connect at the furthest fixture and allows hot water to flow through the main trunk lines. We have to keep the valve on and slowly hot water comes out. Water recirculating pumps just circulate the water; the water pressure should stay the same. Here is the summary of all the negative aspects of hot water circulation pumps: This is the key question. Think hot water loops returning to your boiler to get reheated (to stay hot) Think LOOPS!! Also, make sure you get the 1- pipe for the horizontal manifold, which will help even out the flow of the recirculators. We always take the pros vs. cons approach because nothing is perfect. Both of those spots are problematic though. We were advised of this upon installation. Make sure to follow the required instructions before and after youve turned it off for your safety. It shows that the heating return thermistor is not working correctly. You May Forget to Purge The Recirculation Pump, 03. This is where the timer and temperature sensor come in. You can crack open the manual for your tankless heater and check if it comes with that option. It can take anywhere from 10 seconds to 1 minute for the hot water to reach the faucet. You can isolate the pump from the vibration in two ways. Is this correct for the function of the system? A hot water recirculation pump can be sized for a given system using the following formulas: Water flow qc = /T x 4200 Yes!!! Eric Alvarez is an HVAC guy based in El Paso, Texas, United States. Flush the vinegar out of your water heaters. When attempting a flush of the system, I shut off the hot and cold valves that lead into the heater. Where did you find that info? The recirculation pump will make a squeaking noise if the installer fails to install the primary loop correctly. 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. Do new devs get fired if they can't solve a certain bug? You certainly dont want that, do you? Navien has an aftermarket add on hot point or something that lets you control when the recirc is on. 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. The consent submitted will only be used for data processing originating from this website. . Contents show 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. 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. On the other hand, if you find no foreign stuff, ensure you purge the air out of the system. 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. From the valve, try to loosen up the cap to remove air from the system. Turning off the water recirculating pump isnt a big deal. It usually occurs due to an open or shorted sensor. I have 5 connections including the recirculation in. Reinsert the filter into the plastic assembly. Get it as soon as Wednesday, Mar 1. Connect a regular garden hose to the hot side service valve. You will not get hot water instantly. Therefore, when it malfunctions, it is a sign that the heater has another major underlying issue. Now you have your socket, turn it off/on whenever you want! 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