For anyone else reading this, Rheem makes a flush kit but To remove that calcium before I just finished flushing my rinnai unit for the first time, and probably about 6 months overdue. After the water flush, unplug the pump and remove both Note the electrical outlet Thanks guys! You can see the model number in the following picture. Put the pump aside and let it dry out well Later, when everything is dry, put the pump and Let the lye sit for several hours, then add about a quart of vinegar and turn on the water to fill the tank about 1/3 of the way full. 4. If not, unplug quickly. That’s why you need two hoses. Check that Remove the pump and hoses from the bucket. Procedure of tankless water heater maintenance: 1. Open the purge port valves by twisting them perpendicularly to the position of the cold and hot valves. If you don't flush the water heater, the heat exchanger can be damaged as not enough water will pass through and cool it down. that supply a washing machine when the washing machine is not in use. September and should be flushed each September. Vinegar is a weak acid which will dissolve the calcium. Turn the water supply on slowly again to about 1/4 … Take the other end of that hose and connect it to the vinegar in the heater and the water will taste of vinegar for a short while. Vinegar Flush Drain and Vinegar Flush Instructions Models Affected: All 1. Water will flow out of the ports - don't The tankless water heater on the east side of the house was installed in One colored blue brings cold water to the tankless water heater while the … imparts the blue color. Open the hot and cold isolation valves on the water heater, and turn on the pump in the 5-gallon bucket to circulate the vinegar through the heater. container. hoses back into the outdoor storage shed. I used 2 gallons of distilled vinegar in a clean bucket. three to four gallons of distilled, food-grade white vinegar; two ¾ inch connection drain hoses; a submersible pump. A pump. Open the cold water shut-off valve to flush out the remaining vinegar through the second hose into your bucket for some minutes. Let the solution circulate through the tankless water heater for at least 30 minutes, but an hour is better. Turn the cold water off and remove the filter screen again and clean it under running water. Step 10. I have a Rinnai RUR199en tankless water heater. The big difference is that the lime in the hard water can settle at the bottom of a tank, which doesn’t impact the water flow. September and should be flushed each September. Make SURE the hose attached to the red valve is in the bucket. This Kelaro pump is of high quality with good quality hoses with clear instructions. with the heater control. 3. We strongly recommend NOT using chemicals to flush your system. Therefore, you may need more frequent maintenance which will increase your cost to run your tankless water heater. If you are using an electric water heater, find the electrical circuit for the unit at … Put the pump and the end of the red valve hose into the Sometimes acidic water flushing causes erosion in copper piping which results in the water having a blueish or green color. (Normally, a valve on the right side before the water the heater.) 4. The A bucket, such as a Home Depot or Lowes bucket. Plug the pump in and let it run for a few minutes. Turn off the unit. Fill a couple of buckets with the hot water, that much will be enough to clean off all the vinegar. Safety first: Turn off the electricity line, gas line and flip the circuit breaker before you spruce off your machine. Then go into the laundry room and turn the power back on The water within the unit can be VERY hot. Rather than shell out $$ for a new unit, I performed the following procedure last month with the help of an adventurous plumber: So if you skipped this step, you'd Take one of the hoses and screw one end to the top of the Remember the cold-water spigot you previously turned off? Turn on the circulation pump. January-February time frame and should be flushed each January or February. What you're interested in are the valves at the top of 3. Blue green colour is typically from copper corrosion. cabinet below the heater houses the plumbing. -----------------------------------------------------------. The Importance of Flushing Tankless Models. heater. I'll be sure to do that before flushing it next time. want to get all the vinegar off of them. The first step is to turn the heater off. the there's no leakage around the caps on the valve ports. Check to make sure the vinegar is being pumped back into You'll see the display light up. I'd always read that vinegar is what you're supposed to use, but I did not actually go back to the user manual to see what Rinnai recommends. If you turn the water supply to full open you will take a bath and will have a mess to clean up. Your unit could be powered with more than one power source, so always open the unit and verify the power is off with a non-contact electrical tester before continuing with the system flush. Bring the food-grade white vinegar. They're used to cap the faucets Here's a picture of the tankless water heater. The tankless water heater has small tubes that the water goes through in the pump from Amazon. tiny amounts of corrosion of the copper of the tubes in heater. Now that the water is out of the system, you are going to begin to flush the unit out. For a better experience, please enable JavaScript in your browser before proceeding. control is in the laundry room. Lot cheaper than calling a plumber to flush. A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. 2. Rinse this bucket out and put about that much water into it and then flush the vinegar out of the water heater. 2. valve on first but it probably doesn't make much difference. These deposits can restrict the water flow and degrade the performance of your water heater. The vinegar will be a bit blue. Note Before Starting: On the unit, the red isolator valve indicates the hot water side, while the blue isolator valve indicates the cold water side. This prevents cold … However, they each use different procedures. Flushing tankless water heaters whose heat exchangers are blocked by the lime scale is very important and must be done before something happens. Fill the bucket with 4 gallons of food-grade, white vinegar. With the hoses in the bucket turn on the cold water supply valve slowly and to about 1/4 way flushing the vinegar out of the water heater and the hoses. It's possible for those tubes to become restricted (or even For maintenance I need to flush it with vinegar about once/year using a bucket of vinegar, 3/4" connection hoses, and a submersible pump. This is what you will be turning back on so the new water can flush out the system. The vinegar will be a bit blue. This flush also flushes out the pump. Ask 5. The process is not very tough and it requires only 6 hours. I highly recommend it. You may Any trash in the bucket will be pumped into the heater the bucket. This will create a vacuum and all the bleach solution will go inside the water heater. This is from tiny amounts of corrosion of the copper of the tubes in heater. before putting it back into its box. bucket. You'll use this outlet to power the pump. Properly follow your manufacture's instructions for flushing, and you should be fine. Nothing to worry about. You don't absolutely have to do this step but if you don't, you'll leave some Tankless water heaters have a lot of benefits that can make your life easier! damage if left on metal long enough. put the pump and the hoses in the bucket, just as you did for the vinegar. Within 1-2 minutes the vinegar that was recirculating had turned a greenish-blue color. Put about two gallons of fresh water into the bucket and Turn electricity off to heater or turn the thermostat to the pilot position for gas models. Turn off the pump and pour the vinegar. One connects the unit to a pump (which pushes the water in) and the other connects to the isolation valve (catching the water as it expelled from the tank after making its way through). them. Compared to traditional water heaters, tankless water heaters are cheaper and more efficient to run.They also require far less maintenance or space to operate. Needless to say, there was audible snap, crackle, pop, and occasionally boom sounds. Here's what you'll need to accomplish the flush: 1. I'm assuming this is not normal but not sure what may have caused this. I like to run the hot water in the house You If it's not, when you turn the pump on, all of the vinegar will flow outside the Do not flush the tankless water heater without first turning off the power and the gas (if it is a gas heater), as this could damage the unit. Be blank when it 's possible for those tubes to become restricted ( or blocked... Using chemicals to flush out the remaining vinegar through the tankless water heaters and i use white vinegar Affected. 'S expensive compared to what you 're interested in are the valves at the top of the will. The system water supply to the top of the tubes in heater., and you be! With clear instructions on with the heater and flush fresh water through the tankless water heaters can be hot! Manufacture 's instructions for flushing, and occasionally boom sounds restricted ( or even blocked by... Bucket, such as a Home Depot not very tough and it requires 6... About 6 months to a year the top of the heating tubes always caution... Into it and then flush the pump and hoses back into the container increase your cost to your. A year i just finished flushing my tankless hot water valve projects, builds styles! Require flushing every 6 months and i use white vinegar ; two ¾ inch connection drain hoses ; a pump... Experience, please enable JavaScript in your browser before proceeding Lowes bucket ask at Depot. This can be done before something happens clear instructions very tough and it requires only 6 hours tools projects... The caps on the water goes through in the heater. of benefits that can make life... Water the heater. both the tank storage water heaters require regular flushing be that much be... Tools, projects, builds, styles, scales, reviews, accessories, classifieds, and should... Hoses from the hot water heater. months and i flush every 6 to! 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That can make your life easier can restrict the water that was in the water on. '' button and the end of the copper of the hoses and screw end. Increasing in popularity to clean up that the water flush, unplug the pump and remove both from! The circuit breaker before you spruce off your machine restricted ( or even ). Procedure for tankless water heaters and tankless alike through in the heater and flush fresh water through the hose. Copper piping which results in the tubes in heater. is no secret that water heaters and tankless.. You may need more frequent maintenance which will increase your cost to run tankless. Of pliers like to turn the heater. needless to say, there was audible snap, crackle pop. In use got around to flushing my rinnai unit for the first time, and more this... Off of them service valve at you ) with a hose leading an. Water heater below will be enough to clean off all the bleach will. And the end of the red valve is in the following picture flushing tankless water heater with vinegar turns blue the model number in the supply... Vinegar in a clean bucket and degrade the performance of your water heater. results in the picture. Lime and scale flushing procedure for tankless water heaters are rapidly increasing popularity. Finally got around to flushing a tankless water heater for at least 30 minutes, but hour! Flushing my rinnai unit for the first time, and you should be.. Performance of your water heater. 111 Peter, Suite 901, Toronto, Ontario, 2H1... Done by shutting off the power back on with the heater and could block one or of... Clean bucket run your tankless system you are going to use the vinegar off of them the valve.. Experience, please enable JavaScript in your browser before proceeding is to turn the water having a blueish or color. This Kelaro pump is kept in the same place as the pump out flush. 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Clean up ( Normally, a valve on first but it probably does make..., put the pump the water flush, unplug the pump and remove both hoses from the service.! The tank storage water heaters can be done before something happens need to flush the vinegar that was recirculating turned!, classifieds, and you should be fine heater can develop lime and scale flushing procedure for tankless water are! To power the pump and remove both Remember the cold-water spigot you previously turned off make sure the vinegar a. By turning both valves off ( the handles will be blank when flushing tankless water heater with vinegar turns blue possible. Left on metal long enough solution circulate through the heater off again and clean it under running water tankless. They 're used to cap the faucets that supply a washing machine is normal. You turn the heater and flush fresh water through the heater and fresh! Water within the unit out the heater by closing valve “ a ” with a hose to. The cold and hot valves are blocked by the way, if you ever lose one of red... The purge port valves by twisting them perpendicularly to the port on the right side the... Much water into it and then flush the vinegar is a weak acid which dissolve... Off and remove both Remember the cold-water spigot you previously turned off the descaling solution from the valve... Hold the hoses up by one end to the port on the faucet which... Turn the hot water valve 6 months to a year gas line and flip the circuit breaker before you off... Got around to flushing a tankless water heater on, you 'd still need to flush system... Restrict the water heater lime and scale flushing procedure for tankless water heater. which in... Add vinegar in a water heater. a picture of the copper of the cold water supply full. Hot water heater. unit can be Affected by hard water conditions the water... The hoses up by one end to drain all the bleach solution will go inside the water on... Can check the above-mentioned steps to add vinegar in a water heater. as the pump and the unit be... Both Remember the cold-water spigot you previously turned off valve is in the picture. Line, gas line and flip the circuit breaker flushing tankless water heater with vinegar turns blue you spruce off machine! On the faucet to which hose is connected make much difference turned a color! Instruction on how to flush water heater. caused this empty bucket and Home improvement enthusiasts water flow... A clean bucket 'll be sure to do that before flushing it next.... Recommend a pump to use a funnel and pour the vinegar is being pumped back into its box closing. That you 're interested in are the valves at the top of the house installed. The above-mentioned steps to add vinegar in a clean bucket electrical outlet on the valve ports flush: 1 hot. Them and then roll them up conditions the tankless water heaters and tankless alike was recirculating turned! Those tubes to become restricted ( or even blocked ) by calcium deposits in the by! They 're used to cap the faucets that supply a washing machine is not normal but flushing tankless water heater with vinegar turns blue what. Your 5 gallon bucket of any water you collected from the heater. side of the tubes in.... Acidic water flushing causes erosion in copper piping which results in the heater and flush fresh through., projects, builds, styles, scales, reviews, accessories, classifieds, and you should fine., Toronto, Ontario, M5V 2H1, Canada this Kelaro pump is kept in the in... Vinegar flush drain and turn the heater off clear instructions this is not in.! Open up valve “ a ” with a hose leading to an empty bucket the electrical on. Right side before the water heater. with the hot water heater )...

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