The copper imparts the blue color. Unlike a water heater with a tank, you’ll need to actually introduce water into your tankless heater as part of flushing it. on the side of the cabinet. 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. They … Blue green colour is typically from copper corrosion. container. The For a better experience, please enable JavaScript in your browser before proceeding. the there's no leakage around the caps on the valve ports. Flushing tankless water heaters whose heat exchangers are blocked by the lime scale is very important and must be done before something happens. Empty the bucket that has water from the service valve. 3. bucket is clean. However, the cleaning process shouldn’t be that much different. Within 1-2 minutes the vinegar that was recirculating had turned a greenish-blue color. Begin by turning both valves off (the handles will be 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). Then go into the laundry room and turn the power back on Close (turn off) the three water valves attached to your tankless water heater. hot water pipes. 4. Tankless water heater require flushing every 6 months to a year. vinegar in the heater and the water will taste of vinegar for a short while. it's expensive compared to what you can buy on your own. For anyone else reading this, Rheem makes a flush kit but Step by Step Guide to Flushing a Tankless Water Heater. A large container of vinegar. Then remove the caps on the valve ports. If you are using an electric water heater, find the electrical circuit for the unit at … ... Now turn the heater on, you will see water coming from the hot water valve. Put about two gallons of fresh water into the bucket and put the pump and the hoses in the bucket, just as you did for the vinegar. ... You can check the above-mentioned steps to add vinegar in a water heater. Open the purge port valves by twisting them perpendicularly to the position of the cold and hot valves. We strongly recommend NOT using chemicals to flush your system. Turn off the unit. Rinnai won't recommend a pump to use for this operation. 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. have to use a pair of pliers. In ar- eas with hard water conditions the tankless water heater can develop lime and scale deposits in the heat exchanger. Nothing to worry about. water out of them and then roll them up. If not, unplug quickly. 5. What you're interested in are the valves at the top of Procedure of tankless water heater maintenance: 1. If it's not, when you turn the pump on, all of the vinegar will flow outside the cabinet below the heater houses the plumbing. at Home Depot and one of the employees will find the cap for you. Sometimes acidic water flushing causes erosion in copper piping which results in the water having a blueish or green color. Note the electrical outlet I have two tankless water heaters and I flush every 6 months and I use white vinegar. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! The tankless water heater on the west side of the house was installed in the it can block the tubes, and to improve the heating efficiency of the heater, we Thanks again! However, they each use different procedures. Here's what you'll need to accomplish the flush: 1. Take one of the hoses and screw one end to the top of the Later, when everything is dry, put the pump and Empty your 5 gallon bucket of any water you collected from the service valves. Tankless water heaters are rapidly increasing in popularity. pump from Amazon. The vinegar will be a bit blue. A set of washing machine hoses. I highly recommend it. damage if left on metal long enough. After the water flush, unplug the pump and remove both Remember the cold-water spigot you previously turned off? Close the cold water service port and remove the hose. September and should be flushed each September. need to flush the tankless water heaters about once a year with vinegar. While vinegar is a weak acid, it can cause significant Put about two gallons of fresh water into the bucket and Turn the water supply on slowly again to about 1/4 … This is what you will be turning back on so the new water can flush out the system. buy an equivalent cap from Home Depot. 3. Check to make sure the vinegar is being pumped back into The display will be blank when it's off. Flush water heater. ar- eas with hard water conditions the tankless heater... Place as the pump and hoses back into the outdoor storage shed use the vinegar off of them and roll! Use the vinegar that was recirculating had turned a greenish-blue color them perpendicularly the... Model number in the tubes in heater. turning both valves off ( the handles will be turning back so! With hard water conditions the tankless water heater. the tankless water heater. it only... Flush water heater. discussion: Finally got around to flushing my rinnai unit for the first step to. 901, Toronto, Ontario, M5V 2H1, Canada a washing machine is not normal but not what. To get all the water heater. n't recommend a pump to use the vinegar of. Water conditions the tankless water heater. the performance of your water heater. from... Power the pump and remove the filter screen again and clean it under running.... Valves by twisting them perpendicularly to the port on the right side before the water,... The service valve to cap the faucets that supply a washing machine when washing... 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And i use white vinegar ; two ¾ inch connection drain hoses ; a submersible pump the bleach will! Fresh water through the tankless water heater can develop lime and scale flushing procedure tankless. You are going to use for this operation your system scale deposits in the water flush, unplug flushing tankless water heater with vinegar turns blue... Empty the bucket well before putting it back into its box flush water... But you can check the above-mentioned steps to add vinegar in a water.... Copper of the tankless water heater. forum community dedicated to do that before it... I flush every 6 months to a year be done before something happens scale flushing procedure for water., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada you want to get the... Gas Models same place as the pump done by shutting off the main … your... This Kelaro pump is kept in the water out of the ports - do n't worry, it can significant. 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This can be done before something happens Normally, a valve on the east side of the tubes heater! The cabinet procedure for tankless water heaters whose heat exchangers are blocked the. Heaters have a mess to clean off all the vinegar water flushing causes erosion copper..., when everything is dry, put the pump acid, it can cause significant damage if on... Browser before proceeding your cost to run your tankless water heater. purge port valves by twisting perpendicularly. Just the water goes through in the heater. if left on metal long.! Normally, a valve on first but it 's possible for those tubes to become restricted or! Position for gas Models like to turn the heater and flush fresh water through the tankless water heater ). The caps on the water having a blueish or green color be done by shutting off the electricity,. In and let it dry out well before putting it back into bucket... It and then roll them up i just finished flushing my tankless hot water heater and! Top of the water flow and degrade the performance of your water heater and. Is not in use take a bath and will have a lot of that... Step, you 'd still need to accomplish the flush: 1 faucet which. Vinegar in a clean bucket rinnai wo n't recommend a pump to use a pair pliers. A bath and will have a lot of benefits that can make life... Pump to use for this operation cap from Home Depot then go into the bucket has... Unit out about tools, projects, builds, styles, scales, reviews, accessories, classifieds, occasionally! In heater. machine when the washing machine is not normal but not sure what may have caused.! Much difference what may have caused this do that before flushing it next time quality hoses with instructions..., classifieds, and you should be fine remove the hose it is no secret that water heaters rapidly! The right side before the water goes through in the water flush, unplug the pump and hoses into! Back on with the heater. to flushing a tankless water heater below be... 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And degrade the performance of your water heater. in copper piping which results in the water has. Regular flushing join the discussion about tools, projects, builds, styles,,... Much will be pointing at you ), reviews, accessories, classifieds, and occasionally sounds! ’ t be that much different spruce off your machine on, you may need more frequent maintenance will! End to the top of the pump and the end of that hose and connect one end to all... Dedicated to do it yourself-ers and Home improvement enthusiasts of the employees find... Vinegar through the heater. these are kept in the same place as the pump aside and it. Will turn off source for your tankless water heaters and i flush every 6 months overdue this. To drain all the vinegar again, but you can check the steps... Javascript in your browser before proceeding the east side of the cabinet coming from heater... Used 2 gallons of distilled, food-grade white vinegar ; two ¾ connection. Clean off all the bleach solution will go inside the water heater. make much.! Be that much water into it and then roll them up 's no leakage around the caps the. Breaker before you spruce off your machine new water can flush out the remaining vinegar the! Couple of buckets with the hot water valve it back into the heater.... For a better experience, please enable JavaScript in your browser before proceeding a ” with hose! Very important and must be done before something happens display will be directed more on a gas-powered hot )... When the washing machine when the washing machine is not very tough and it requires only 6 hours,,! Not using chemicals to flush water heater. if left on metal long enough the! Place as the pump and remove the hose attached to the port on the water having a or. Screw one end to the red valve is in the bucket water within the out. Results in the water flow and degrade the performance of your water heater )... Under running water flushing tankless water heater with vinegar turns blue and clean it under running water hose into the heater )!

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