The Navien is smart enough to stop recirculation when it recognises hot water has made the entire loop. However, the plumber branched this off into the circulation water inlet. Remove and clean the cold air intake filter. Ensure the recirculation pump was installed correctly. 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. Any tips on where to verify if I have a dedicated return line? Also, as I'm taking a closer look at it, I'm concerned that some key things may be amiss. The major difference with hot water pumps in new homes is that you can install a full recirculation pump system (Type #1). Its really an easy task to do. But it will be best if you contact a certified plumber to fix this issue. 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. Rather than using the hard wired door bell style push button that comes with the kit, I bought this remote control unit (. We can go from there with up to 3 hours of dedicated live coaching on the telephone if needed. Is the cable harness compatible? 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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 The pump works on the existing pipes; it basically sends the leftover water back to the boiler or the heater. If required, replace the thermistor. They are not without upfront costs or disadvantages. First, you need to consider Things to consider when sizing the busiest usage period or peak time. I have an NR240A for about 10 years now. The 3/4-inch pipe thread connectors are used to connect the pump to your existing pipes. The upfront cost is a major deterrent when deciding if it makes sense to install a circulation pump or not. You can change the cold water inlet thermistor if necessary. Next, check and remove the intake filter from the heater. It looks like you're using an ad blocker. Buzzing noise out of the recirculation pump will be general if you or your plumber dont mount the pump securely. It can take anywhere from 10 seconds to 1 minute for the hot water to reach the faucet. The cold water inlet one thermistor is defective. Then descale a flush the heater following the steps listed below. This is known as recirculating home pump comfort system (Type #2) and its the most popular way to get hot water quickly. How do hot water recirculation pumps work to get hot water fast? It is a visible sign that your devices cold water inlet two thermistor is having some issues. 08. 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. Navien has an aftermarket add on hot point or something that lets you control when the recirc is on. If a hot water faucet is open, you can adjust the temperature only from 98-110 F (37-43 C). 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. = heat loss from the circulation system [kW] You can crack open the manual for your tankless heater and check if it comes with that option. Turn off the device for half an hour and confirm everything is working correctly. It will make your water recirculating pump much smarter. Does the thing have a 'vacation' mode? For example, if you have a person showering and another individual shaving. 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. Fortunately, Navien water heaters recycle hot water and always provide hot water. You just have to unplug the pump, and it will be turned off. The water heater will not provide hot water instantly. Water recirculating pumps just circulate the water; the water pressure should stay the same. Check to see if the warranty is still valid and contact the manufacturer. And the heater has been set to recirculation mode. Consider yourself lucky if this installation hasn't damaged your circulating pump inside the unit. Cookie Notice What disadvantages, beside cost???? Check this too: Electric RV Water Heater How to & Troubleshooting Guide. Examine and confirm the pressure sensor and wiring are in good condition. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. air), Sensible Heat (BTU/hr) = 1.1 x CFM x t (std. A hot water recirculating pump will save you money, especially if you have a larger family. Pump the white vinegar into the cold side, up through your water heater, and out the hot side. We do all the time-consuming research and testing for you. Check to see if the water valves are open. So, get 2 braided ss flex connectors and install them on the inlet and the outlet of the pump. If we dont use it, we waste a lot of water. This serves two functions: You save water. Turning off the water recirculating pump isnt a big deal. We and our partners use cookies to Store and/or access information on a device. = 4.5 x CFM x h (std. Weve tried to include every concern you might have regarding turning off the water recirculating pump. Locate the power button and press it to turn on the heater. Perhaps not everyone is familiar with the newer manual. This time of year, we dont need to have instant hot water circulating so we turned off the pump. 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. When building a house, its smart to think about hot water recirculation as well. A recirculation system is a hot water line that runs throughout the house and returns back to the water heater. It means there is some issue with the flow sensor or switch. Circulation pumps can wreck havoc on your lines if you run them constantly due to friction at bends causing pinhole leaks. 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. If you have come back from a vacation, first turn on the main water valve. 1. 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. Therefore, the only task you can attempt on this list is the gasket replacement for the leaking water connection. Turn off the unit and check the valve's wiring and condition. So, hire a professional to deal with the issue. There is some issue with the front panel key. Press the reset button to reset your device. Ensure you mount the pump securely. This is because the motherboard or control board is the units brain responsible for receiving and transmitting information in the heater. However, if you want hot water fast, these on-demand heaters are not ideal. Close the isolation valves to the cold-supply and recirculation lines. here are some problems that you may have to deal with in the future or have experienced already primarily found in older Navien heater models; Though not a common occurrence, it is still essential to know how to identify these issues. Thanks! 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. Is there the same solution for NR240A? How To Fix Navien Tankless Water Heater Code E003? I am guessing that he only returned the HOT line, hence the delayed time in "INSTANT HOT", as the Naviens are sold as well as there 96% efficiency!! Where does this (supposedly) Gibson quote come from? Your question, can I turn off my hot water pump? has been answered. Privacy Policy. Create an account to follow your favorite communities and start taking part in conversations. Why Does My Stiebel Eltron Tempra High-limit Switch Keep Tripping. Reconnect the power supply to the water heater. Worst case is your plumber might have to call since they require them to maintain it. The user manual for these devices (of which I own two) provides a pretty good plumbing diagram for proper install. Wash it under the water with a brush, let it dry, and then place it back. This number indicates that the water pressure is high. For moving the pump to another sink, you would have to talk with a plumber. Is this noise normal coming from my Navien tankless heater? I have the newest version pcb since I just bought the tankless. Turn off the power before removing the filter. Turn off your main water valve if you are going on vacation. 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. It has a timer that turns on the pump at regular intervals, mostly during peak usage times. Remove the screw that secures the air intake filter and then remove the filter. There are several ways to do it. Tankless Water Heater Breaker Size Calculator: What Size Breaker? Without the need for extra piping, this type of hot water circulation pump system also comes at a much lower cost. Well, If you overuse your pump, it will start malfunctioning. We have to keep the valve on and slowly hot water comes out. 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). We always take the pros vs. cons approach because nothing is perfect. It will help you avoid common water heater issues and let you operate the unit smoothly. Question: How is a water recirculating pump eco-friendly?Answer: The basic reason is, water recirculating pumps save water. Some sort of noise out of your Navien recirculation pump is normal. This may require chasing the supply lines. All you have to know is how to turn it off. The whole point of installing such a pump is to get hot water fast. The error code E441 informs about the open thermistor or short circuit problem. 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. First, open and close the pressure relief valve, which is located near the units outlet. Your article ended saying All in all, its important to understand that recirculation pumps are worth the money. Low gas supply which prevents proper heating of water, Damaged flow sensor preventing proper supply of gas to the heater. 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. rev2023.3.3.43278. 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. SEER = (1 EER100% + 42 EER75% + 45 EER50% + 12 EER25%)/100, Total Heat (BTU/hr.) 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. There is a circulator pump, but it still takes a long time for hot water to reach the upstairs bathrooms. Works great and saves the copper pipes. Step 1 Remove the plug from the socket on the end of the wire that connects to your circulator pump. The E615 tells you about the irregularity in input and memory. Then re-insert the filter and screw it back in place. The main sign of motherboard or control board failure is intermittent switching off and on. Question: How much does it cost to buy a water recirculating pump? Its not exactly normal. The water heater is set to 120 F (49 C) by default.