How To Clean Your Tankless Water Heater?

How to Clean a Tankless Water Heater [A Complete Guide]

Tankless water heaters require less maintenance than storage systems on average, although they do require regular maintenance, such as cleaning.Because the hardness of the water determines how long it will take to maintain the system, there is no defined time range.Because mineral deposits accumulate more quickly in hard water locations than in soft water areas, systems in hard water areas will require cleaning more frequently than systems in soft water areas.

When using a tankless system, this often takes longer since it drives minerals through the system rather than allowing them to build up at the bottom of a tank.In most cases, when it comes to tankless water heaters, an alarm will sound when maintenance is required.

How to Clean a Tankless Water Heater

  • The first step is to turn off the power source. If the tankless water heater is powered by gas, then turn off the gas supply to the unit. If the problem is electric, shut down the circuit breaker. Make a list of all of the materials that will be required. You will require the following materials: 5 gallon bucket
  • 2 stainless steel washing machine hoses
  • submersible pump
  • 4 gallon bucket of white vinegar (food grade)
  • a pair of rubber gloves

If you don’t already have these goods, you can purchase them as part of a kit.Step two: Turn off the water valves on the three water lines.Three types of valves are used: one for cold water entering the system (typically blue), one for hot water exiting the system (usually red), and one for water delivery to the residence (usually yellow).

Depending on the manufacturer and type of your tankless water heater, they might be either handles or knobs.Assuming they are handles, the water is switched on when the handles come into contact with the pipe.When they are perpendicular to the pipe, the water is shut off automatically.

Ensure that you have unplugged the unit from the wall socket if you haven’t already.The third step is to remove the purge port valve lids from the purge valves on both the hot and cold water lines.Because they have small handles, it is important to move them cautiously in order to alleviate any pressure that has built up and to minimize any hot water spilling.It is necessary to handle the caps with care in order to ensure that the rubber washer sealing discs remain in place.To guide the water into the bucket, step four involves connecting the housing lines to the valves.When connecting the hose to the hot water, use extreme caution to avoid burning yourself.

Allowing the water to flow into the bucket requires opening the purge apertures.In order to test the temperature of the hot water before opening it totally, open the hot water side slightly and allow it to drip out before fully opening it.When the water has completed draining, leave the hoses in place and remove the water bucket from the sink.Approximately four gallons of food-grade white vinegar should be added to the bucket.Vinegar is a non-chemical cleaning solution that works well.Chemicals or other vinegars should not be used to clean the water system since they can be harmful to your health as well as the health of the water system itself.

As soon as the bucket is full with vinegar, link the ends of the hoses to the submersible pump and submerge it in the vinegar before plugging it in or turning it on.When you turn it on, it will begin to circulate the vinegar through the system immediately.Allow it to run for anything between forty-five and ninety minutes.

Step Six: While the vinegar is being pumped through the pump, remove the face plate of the heater and the air filter from the heater.Replace it after rinsing it well and drying it.Reinstall the faceplate by screwing it in place.

When the vinegar has completed pumping, disconnect the pump and carefully get it out of the bucket of vinegar.Step Eight: Remove the vinegar from the bucket and place it beneath the water heater.Afterward, reconnect the hose to the cold water side of the faucet and put the top back on.Open the water valve and let 4 to 5 litres of water to circulate through the system before closing it.Close the valve as soon as possible.

Remove the water filters from their mounting brackets and thoroughly rinse them before reinstalling them.Step Eight: Reattach the caps and secure everything in its proper place.Once everything is properly secured, switch on the cold water valve and listen for the sound of running water.

  1. Install the hot water heater, then the gas and central circulation valves, and then complete the installation.
  2. After that, you may reconnect the system and continue using it as usual.

Conclusion:

These processes may differ somewhat from one manufacturer to another or from one model to another.Make sure you read the owner’s manual for your exact make and model before you start.Some models come with cleaning hoses, whilst others may not be equipped with them.

You can get a tankless water heater cleaning kit if you feel the need to do so.On the internet or at select places, you may get food-grade white vinegar in quantity.It is not recommended to use any other type of vinegar because it might damage or stain the system, and it is also not recommended to use chemicals since they can linger in the water and be harmful to your health.

Warning

Never clean your tankless water heater without first shutting down the electricity and gas to the unit.If your tankless water heater is linked to more than one power source, unplug them all and check with a non-contact electrical tester to make sure everything is working properly.We strongly advise you to review and adhere to the particular cleaning instructions for your machine, which are available on the manufacturer’s website.

Any mistreatment might result in damage that necessitates the need for servicing or repair.Hi, Hello, my name is Luis.″TheHeatersGuide″ is written by an author.

I am a Mechanical Engineering graduate with a bachelor’s degree.At the moment, I’m investigating heating technologies.However, I have learnt many different house heating approaches and am still learning about home heating technology today.And I like disseminating the results of my study and reviews.

Why it is Crucial to Clean your Tankless Water Heater

The majority of households are not accustomed to doing routine maintenance on their water heaters.Despite popular belief, older tank-style heaters benefit from a yearly cleaning and the replacement of the anode rods that prevent the tanks from corrosion.This is something you should know about.

When it comes to hot water tanks, this sort of normal, planned maintenance is rarely performed.Most individuals, on the other hand, are comfortable to just rely on their water heater to do the heavy lifting while they deal with issues as they arise.The fact is that you may wind up spending more money on fixing those old tanks than it would cost to replace them in the first place.

In fact, many individuals are choosing to replace their outdated water heaters with energy-efficient, on-demand tankless systems, which are becoming increasingly popular.While tankless water heaters initially demand a higher initial expenditure, this choice is eventually more cost-effective since it saves on both energy and water use in the long run.If you decide to invest in a tankless system, you will want to make sure that it is properly maintained from the beginning because it has a lifespan of over 20 years (rather than use that old approach of letting it run until it wears out).The monetary benefit of a well running tankless water heater makes the expense of annual maintenance well worth it.

Calcium Build-up Requires Regular Maintenance

Ultimately, the hardness of the water in your geographical location will influence how frequently your tankless water heater will need to be serviced and maintained.Calcium accumulation is caused by hard water, and the harder the water, the more quickly the calcium buildup will collect.In order to maintain your water heater functioning efficiently, it is recommended that you book a service appointment at least once every twelve months.

In the event that you have very hard water or if you use your water heater at a temperature higher than 130 degrees, you should have it serviced every 6 to 9 months.

Calcium Buildup Issues

Calcium, silt, and other mineral buildup must be cleaned from your tankless hot water system on a regular basis, since this accumulation can impair the heating effectiveness of your tankless heater and cause it to malfunction.Calcium and sediment building serves as an insulator, preventing the elements from heating the water efficiently and causing the elements to use more energy than is necessary to heat the water.It is also possible that sediment and mineral buildup can cause obstructions in the pipes and a reduction in the flow rate of your tankless water heater.

When sediment and debris gather to a significant degree, they can choke pipes, causing leaks and even serious damage to your water heater, among other problems.

How to Clean Tankless Water Heater

Cleaning a tankless water heater consists of passing white vinegar or similar certified cleaner through the heat exchangers to remove scaling and mineralization that can clog the heat exchangers and cause them to malfunction.You should not utilize a chemical that you would not drink if you had the option.Even after thorough cleaning and flushing, tiny levels of contaminants might remain behind and wind up in your drinking water or food supplies.

It is recommended that tankless water heaters be fitted with a flush kit at the bottom to allow the main water supply to be turned off and a loop of cleaner to be pushed through the device during installation.Some tankless water heater manufacturers provide entire flush kits that are designed to work with their products.A pump, a few hoses, and a bucket are all included in the kits.

You will most likely wish to cleanse the unit on a regular basis.This can aid in the prevention of scale and lime buildup in your unit.In addition, depending on the type of water heater you have, the screen filter should be inspected for debris and cleaned as needed.Always refer to your tankless water heater’s owner’s handbook for information on how to properly care for it.If you want assistance with the appropriate cleaning and maintenance of your tankless water heater, contact the plumbing professionals at Magnificent Plumbing in your area for assistance.They can also put you on a regular maintenance plan to ensure that tankless water heater cleaning is done on a regular basis, so that you don’t have to worry about the periodic maintenance that is required to maintain your tankless water heater operating at peak performance.

How to Flush a Tankless Water Heater (Step-by-Step Procedure)

Please keep in mind that this content may contain affiliate links.This means that, at no additional cost to you, we may gain a small profit on purchases made via our links.Knowing how to properly clean a tankless water heater will help you get the most out of your investment in terms of efficiency and durability as possible.

Consider the following steps in detail, as well as some helpful tools and crucial considerations.

The Importance of Flushing Tankless Models

Tankless water heaters are less expensive and more energy efficient to operate when compared to standard water heaters.They also demand significantly less maintenance and operating area.Therefore, it is critical to understand why and when a tankless water heater should be flushed, as well as how to flush a tankless water heater, whether it is gas or electric.

Examine how the naturally existing sediment in your water impacts the heater, as well as how to make flushing more convenient and safer.

Tankless Water Heaters and Scale Buildup

Anyone who has ever owned a regular water tank is familiar with the necessity of flushing the tank on a regular basis in order to remove sediment from the system.Tankless heaters are not an exception to this rule.Hard water contains minerals that can cause lime scale to build up on the surface of the water.

An explosion from the buildup is less likely to occur with a tankless heater than it is with a traditional tank model, but it can still cause some expensive problems.The heat exchanger is particularly susceptible to scale buildup.As lime deposits accumulate in the unit, the heat exchanger is forced to work harder and more frequently in order to provide hot water.

This can result in a significant reduction in the lifespan of this component, as well as a significant increase in your utility bills over time.To make matters worse, most warranties do not cover the effects of lime buildup.

How Often Should You Flush a Tankless Water Heater?

Tankless water heaters should be cleansed at least once a year to ensure that they operate at peak performance levels. However, the hardness of your water plays a role in this, and if your home’s water is very low in quality, you may find it necessary to flush two to three times a year. To a certain extent, a sediment trap or a water softener can help with hard water.

Isolation Valves

It is critical that we explain isolation valves before proceeding with the rest of the processes.As the name implies, an isolation valve allows you to isolate (isolate) a segment of your pipeline’s liquid or gas supply without having to shut down the entire supply line (as would otherwise be the case).Essentially, the word is equivalent with the term ″shut-off valve.″ From your stove to your toilet, a wide range of objects in your home are equipped with some type of isolation valve for maintenance or emergency purposes, depending on the item.

These valves are available in a variety of designs, but they all fall into two fundamental categories: those that move in a rotational direction (such as a ball or butterfly valve) and those that move in a linear direction (ex: glove or diaphragm valves).In some cases, depending on the manufacturer and if a professional installed your tankless heater, an isolation valve may or may not be put on your tankless heating system.If your heater does not have this function, we highly advise you to get one installed as soon as possible and to engage a professional to flush the system while you wait, since it may be a significant safety issue while doing a flush or other maintenance tasks.

Using Pumps and Flush Kits

A submersible pump is one of your greatest friends when it comes to flushing a tankless water heater.Due to the fact that you do not have enormous volumes of water to sweep up and drag the sediment out, a quality pump such as the 91250 from Superior Pump will save you hours, if not days, of manual flushing time.Flushing will necessitate the use of a large bucket to contain the pump, since there is no easy drainage option available, as there is with a typical tank model, necessitating the use of a submersible model pump.

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A decent flush kit is yet another useful piece of equipment.These kits often include everything you’ll need, including a pump, bucket, descaler, and hoses, among other things.When you own a tankless heater, having a maintenance kit on hand might be a fantastic investment, even if it is not strictly essential.

My favorite kit is made by My PlumbingStuff, and it not only works well and is simple to use, but it is also ecologically friendly down to the last component, making it the greatest tankless water heater flush kit in my opinion.

How to Flush a Gas Tankless Water Heater

  • Consult your water heater’s instruction manual for precise directions on how to cleanse and descale the unit. Rinnai, Rheem, and Noritz are the three most popular manufacturers of gas tankless versions. For your convenience, we’ve included particular guidelines for each of the brands listed below: Procedures for flushing a Rinnai tankless water heater, a Rheem tankless water heater, and a Notritz tankless water heater are all available online.

No matter what type of gas tankless water heater you have, there are a few steps in the flushing process that must be completed in the proper order, but they are all rather straightforward to complete.

Phase 1: Preparation

  1. Disconnect the electrical power source that is feeding the heater.
  2. Remove the access panel and check the terminal with a non-contact voltage tester to ensure that there is no longer any power coming through it.
  3. Discover where the gas isolation valve is located and close it.
  4. To prevent any water from entering the unit while you are working, locate the hot and cold shut-off valves and close them accordingly:
  5. To release any pressure, locate the hot water pressure relief valve, which should be located somewhere along the hot water line. Take cautious, because the hot water will be quite hot
  6. The service port for cold water and the service port for hot water will be separate. Hoses should be connected to both of these ports.
  7. Fill a five-gallon bucket halfway with water and submerge your submersible pump.
  8. The cold water pipe should be connected to your pump.
  9. Into the bucket, insert the free end of the hot water line
  10. Pour four gallons of undiluted virgin food-grade white vinegar into a pail and set it aside. (Note: As a heavy-duty alternative, Noritz recommends mixing one gallon of CLR with three gallons of water.

Phase 2: Flushing

  1. Make sure that the hot and cold service ports are open and that the pump is running.
  2. Make sure the vinegar is allowed to flow through the heater for at least one hour (longer if the pump runs at less than four gallons per minute). As a result of this, the scale is broken down and the silt is flushed away.
  3. Turn off the pump and empty the vinegar into a trash can.
  4. Close the cold water service port and disconnect the hose that is connected to it.
  5. Open the cold water shutoff valve to let any residual vinegar to be flushed out through the second hose into your bucket for around ten minutes.
  6. Close the cold water shut-off valve on your faucet.
  7. Allow the water to drain completely before disconnecting the second hose.
  8. Close the hot water service port on the boiler.
  9. Remove the cold water intake filter as well as the hot water inline filter (if applicable).
  10. Remove any retained sediment by flushing the filters with water in a sink.

Phase 3: Cleanup

  1. Reinstall the filter(s) in a secure manner, and then turn off the hot and cold water valves
  2. Replace the access panel
  3. turn on the gas shutoff valve
  4. and remove the access panel.
  5. The electrical supply should be reconnected.

How to Flush an Electric Tankless Water Heater

  • Flushing out an electric tankless water heater is a little different than cleaning out a gas tankless water heater, and some disassembly may be necessary. Generally speaking, Navien models are easier to understand, however some Takagi models require additional steps in order to properly place the water control valve. Technique for flushing a Navien tankless water heater
  • procedure for flushing a Takagi tankless water heater

Descaling an electric model is similar to descaling a gas model in that it may be divided into three stages.

Phase 1: Preparation

  1. Switching off the electrical power at the circuit breaker
  2. Close the cold water shut-off valve on your faucet.
  3. Open your taps to let any water that has accumulated in the heater to drain
  4. Close the shut-off valve for the hot water supply.
  5. Remove the access panel and check the terminal with a non-contact voltage tester to ensure that there is no longer any power coming through it.
  6. Disconnect the wires from the heating elements by removing the screws that hold them in place.
  7. Extraction of the heating element is accomplished by loosening the hexagonal brass top of the heating element in a counterclockwise manner
  8. Make a visual inspection of the heating components for evidence of damage. A broken element should be replaced as soon as possible.
  9. Storage of the heating elements in the cooper chambers of the heater to allow for cleaning of the heating elements

Phase 2: Flushing

  1. Fill the cooper chambers with virgin food-grade white vinegar that has not been diluted
  2. Pour vinegar into the chamber and allow it to rest for 90 minutes to two hours. Using this method, you may break up any scales on the components.
  3. Remove the vinegar from the mixture.
  4. Replace the heating elements and reattach the cables as necessary.
  5. Open the cold water shut-off valve and let the tank to fill up with cold water
  6. Observe the tank for any evidence of leakage (the paper towel test is quite effective in this situation)
  7. To turn off the hot water, turn the shutoff valve.
  8. Fill the sink with warm water from various hot water taps and let the water run for about five minutes to flush out the vinegar and remove any air pockets from the line

Phase 3: Cleanup

  1. Turn off all hot water faucets in your home.
  2. Close the cold water shut-off valve on your faucet.
  3. Clean any dirt from the cold water input filter by flushing the filter under a cold water faucet.
  4. Replace the filter in a secure manner.
  5. Power should be restored at the breaker once you close the access panel

How to Maintain a Tankless Water Heater

Article to be downloaded article to be downloaded In the course of time, minerals can accumulate in a tankless water heater’s heating chamber, where they can build up and damage the walls of the tank’s heating chamber.You must flush and remove the mineral deposits from your tankless water heater’s tank at least once every year in order to keep it in proper working order and cleanliness.Continue reading to find out how to properly maintain your tankless water heater in order to guarantee that it operates at peak performance and energy efficiency.

Steps Download Article

1 Turn off the electricity to your tankless water heater’s electrical system. This can be accomplished by shutting down the main gas line or turning off the circuit breaker for any electrical equipment present.

  • Using the three water valves linked to your tankless water heater, close and turn them off. While cleaning, this approach will prevent cold water from flowing into the water heater and hot water from flowing out during the cleaning process
  • however, it is not required.
  • The water valves are comprised of three parts: a cold water valve that is often blue in color, a hot water valve that is typically red in color, and a third main valve that brings water into your home.
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  • 3 Remove the purge port valve caps off the purge valves that are situated on each of the cold and hot water valves one at a time, working gently. The purge valves are distinguished by their little handles that mimic the letter ″T.″
  • In order to alleviate any pressure that has built up inside the valves, this technique must be performed in order to prevent excessive hot water from flying out and coming into touch with your skin.
  • Due to the possibility of pressure build-up when removing the purge port valve covers, it is critical to ensure that the hot water valve is completely and correctly switched off for safety reasons.
  • Using gentle pressure, gently tighten each cap to ensure the rubber washer sealing discs remain in place, which are required for your valves to operate correctly.
  • 4 Connect each of the three valves with one of your hosing lines. If the manufacturer of your tankless water heater did not supply you with hosing lines, you may get them from any retail outlet that specializes in home repair or water heaters. If you have any questions, contact the manufacturer of your tankless water heater. There must be enough length in the hosing lines to allow them to reach between the water heater and your bucket
  • It is possible that you will need to reference your tankless water heater’s owner’s handbook or contact the manufacturer directly for specific instructions on how to do this operation.
  • Depending on your situation, you may be required to utilize a sump pump and attach hoses to the tankless water heater’s cold and hot water valves in order to discharge and flush the water from the tankless water heater.
  • 5Open the purge port valves by twisting them in a direction perpendicular to the position of the cold and hot control valves.
  • 6 You should always use undiluted white vinegar instead of chemical solutions to clean your tankless water heater, rather than the recommended 2.5 gallons (9.46 liters). In addition, because your tankless water heater is most likely the source of all of your drinking and bathing water, employing chemical cleaning solutions might have a negative impact on the quality of your water.

7 Follow the manufacturer’s instructions for cleaning and emptying your tankless water heater to ensure that it is properly maintained. It is possible that this treatment will take up to 45 minutes.

  • 8After the flushing operation has been finished, close the purge port valves by twisting the ″T″-shaped handles to the closed position.
  • Connect and remove the hosing lines from each water valve, then reconnect them.
  • 10 Attach the purge port valve caps to the purge valves using the hose clamps.
  • Make sure to tighten the caps completely and firmly without damaging the rubber sealing discs that are placed within the caps.

11 For specific instructions on how to properly re-start your tankless water heater, consult the manufacturer’s handbook for your particular model. Simply rotating and opening the cold and hot water valves such that they are parallel to the position of the main valve that leads into your home may be sufficient for this operation.

  • 12 Slowly turn on the hot water faucet in your sink to let the water to travel through the pipe and cool the water. The water should be left running until it is running consistently and without any air leaving
  • this technique might take up to 2 or 3 minutes.
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  • Question Add a new question Question What should I do if there is a leak in the plumbing and steam is escaping while the hot water is being used? Your heat exchanger has developed a crack and will require replacement. You can purchase only that component or you can replace the entire tankless heater. It is less expensive (in terms of components) to replace a single component
  • however, I rebuilt the entire device since water had seeped into the circuitry, and who knows when that might cause another failure. Is it necessary to perform this procedure even if I have a water softener? Yes, since it’s critical to keep a tankless water heater in good working order. The heating components get very hot, causing calcium and other deposits to bake onto the heating units in a short period of time. Even if the water is from a clean municipal source, it should be filtered. A tankless heater’s life duration is significantly reduced if it is not properly maintained. They’re a highly delicate piece of machinery that requires constant attention and maintenance. Install a filter before the heater and clean it twice a year to ensure that it has a long service life. It is absolutely necessary. You’re more concerned with clearing baked-on crap off the heating element than with cleaning dirt or debris. How long can I keep and reuse white vinegar after cleansing a Rinnai tankless water heater with it? Can I store and utilize the vinegar again? No, because the utilized vinegar contains dissolved particulates, it is no longer considered ″virgin.″ Always discard the old vinegar and replace it with new vinegar before flushing the toilet.

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Make sure you have all of the tools and equipment necessary to flush and drain your tankless water heater by consulting the manufacturer’s instructions for your particular model of tankless water heater.

Thank you for submitting a suggestion for consideration! Advertisement Caution should be exercised if you have used hot water just before doing this process since the water may be too hot while manipulating the purge port valves during the procedure.

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Things You’ll Need

  • The following items are required: a sump pump or a utility pump
  • 2.5 gallons (9.46 liters) undiluted white vinegar
  • a 5-gallon (18.92 liter) bucket
  • three hosing lines (the number of lines may vary depending on the manufacturer)

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How to Flush a Tankless Water Heater in 7 Simple Steps

Have you noticed that your tankless water heater is no longer providing you with hot water?Did you notice a decrease in the amount of water that was flowing from your water heater as well?If you understand how to flush a tankless water heater, you can take care of these problems.

Hard water minerals can accumulate on the heating elements and other components of the water heater, lowering the efficiency with which the water is heated.Tankless water heater manufacturers recommend flushing and cleaning your tankless hot water heater at least once a year, which is why you should do so.Additionally, you may learn more about water heaters that are specifically built for hard water by visiting this page.

This post will show you how to flush your tankless water heater and maintain it operating at peak performance.

Things You Need for This Tutorial

The process of flushing a tankless water heater is not difficult if you prepare the necessary supplies before beginning the real process. Here is a list of the supplies you will need to clean a tankless water heater:

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Owner’s Manual

When it comes to cleaning and flushing their equipment, tankless water heater manufacturers offer specific suggestions.They also have preferences when it comes to the cleaning solution that may be used on the water heating system.I recommend that you read the maintenance recommendations in your handbook before flushing the device.

Also included are the tools required for such an activity as well as the safety considerations that must be adhered to during the process.

Cleaning Solution

When it comes to cleaning the tankless water heater, several manufacturers only advocate pure, undiluted, virgin, and food-grade white vinegar as a solution.This vinegar-based product eliminates mineral deposits and limescale accumulation without endangering the health of your family.Some tankless water heater manufacturers, on the other hand, advocate using a specialized cleaning for their products.

Because of this, it is always a good idea to consult the owner’s handbook for detailed instructions and suggestions.

Other Tools

For a gas tankless water heater, you’ll need a big bucket, a submersible pump, and water hoses to connect the water heater’s service ports to your home’s plumbing system.The use of a screwdriver is also required for opening and shutting the access panel on the water heater.Additionally, a non-contact voltage detector will be useful in confirming that your water heater is entirely turned off before cleaning it.

Steps for Flushing a Tankless Water Heater

Step 1. Read the manual.

The cleaning technique for tankless water heater systems differs from manufacturer to manufacturer.For example, Rinnai may have a different technique of cleaning its tankless water heaters than Rheem or other models, and this may differ from other brands.As a result, I always recommend consulting the owner’s handbook for precise cleaning recommendations pertaining to the device you wish to clean before beginning.

Step 2. Disconnect the tankless water heater from its power source.

Contrary to popular belief, even a gas tankless water heater includes an electrical connection that powers the electronic components within the unit’s construction.Because of this, I recommend that you unplug the gadget from the electrical outlet.It would be better if the tankless water heater’s power source was disconnected from the circuit breaker panel before continuing.

This technique is for an electric tankless water heater, which you will be installing.Make sure the electrical current in your system is safe by opening the access panel and using a non-contact voltage tester to examine it.When it comes to determining whether or not voltage is present in a water heater, the Fluke 1AC-A1-II VoltAlert is a dependable instrument that homeowners may utilize.

Step 3. Close the gas valve, the water supply line, and drain the water.

Locate and turn off the water shutoff valves on the tankless water heater if necessary.It is recommended that you close the shutdown valve on the main water supply line if your device does not have these measures.If you have a gas tankless water heater, I also recommend that you close the gas isolation valve on the water heater before turning off the water supply.

Open all of the faucets in order to drain the water from the supply line.In addition, I recommend that you carefully open the hot water pressure release mechanism in order to alleviate pressure from the system.

Step 4. Prepare the tankless water heater.

If you have a gas tankless water heater, you may be able to skip this step.Remove the heating elements from the electric water heater by releasing the screws that hold the wires in place and unscrewing the hexagonal brass cap from the element.Cracks and other symptoms of deterioration should be looked for on the water heater components.

After you have cleaned your tankless water heater, you may replace the heating element with a new one.It is possible to clean the water heater components in the copper heating chamber if they are placed in the chamber.

Step 5. Set up the flushing system.

The cold and hot water service ports on the tankless water heater should be located, and the flexible tubings should be connected to both.Get a huge bucket and put a submersible pump in the center of the bucket.Afterwards, connect the cold water line to the pump.

The free end of the hot water line should be placed in the container or bucket.Fill it with four gallons of a tankless water heater cleaner or four gallons of pure, food-grade, virgin white vinegar, if needed.Some water producers give suggestions for descalers or cleaners, although the majority do not.

The majority of corporations, on the other hand, solely prescribe white vinegar.Open the copper heating chamber and fill it with pure, food-grade virgin white vinegar before putting it back together.You may also use a tankless water heater descaling solution that is recommended by the manufacturer.

Step 6. Flush the tankless water heater.

Open the cold and hot water service ports on the tankless water heater, and then turn on the submersible pump to complete the installation.Allow at least an hour for the white vinegar or cleanser to circulate throughout the system.It’s possible that the water from cleansing the tankless water heater with vinegar becomes blue after a while.The fact that the solution contains dissolved copper oxide from your tankless water heater should not be a reason for concern.Turn off the water pump and empty the cleaning or vinegar solution from the tankless water heater to prevent it from overheating.

  1. In order to proceed, switch off the cold water service port and disconnect the tubing from the pump.
  2. Allow at least 10 minutes to pass after turning on the supply line’s shutdown valve to drain out any residual vinegar or cleanser.
  3. Close the valve and continue to drain the water until the water is completely gone.
  4. Disconnect the hot water supply line from the service port and remove the tubing.
  5. Check the cold water input first, and then the hot water supply pipe to see whether there is a filter.
  6. Remove these filters and thoroughly clean them in the sink, making sure there are no sediments or debris left behind.

Make sure the white vinegar or cleanser has been sitting in the copper heating chamber for at least 90 minutes before using it.However, most experts recommend that you wait two hours to verify that any limescale and mineral deposits on the heating components have been completely dissolved.It is necessary to replace the water heater elements as well as reattach the electrical lines.After that, open the shutdown valve on the cold water line to allow water to flow into the heating chamber.Afterward, open the hot waterline shutdown mechanism as well as all of the faucets in your home once a few minutes have passed.

Continually run the water for five to ten minutes, or until there is no longer any scent of vinegar or cleaner coming from the faucet.In addition, air is removed from your water line as a result of this procedure.

Step 7. Finish up.

Before opening the shutdown valves for the cold and hot water lines, make sure the filters are properly installed and secured to the hot water line and cold water input.Reinstall the access panel and fasten it with screws to keep it in place.Turn on the gas supply line’s shutdown valve and reconnect the heating unit to the electrical outlet, if it has been disconnected.Alternatively, you can switch on the electricity at the circuit breaker panel.Close all faucets and turn off the cold water valve to prevent water from leaking.

  1. Remove and thoroughly clean the cold water supply input filter to verify that no debris is left behind before reinstalling the filter.
  2. At the circuit breaker panel, secure the access panel and turn on your water heater to begin using it.
  3. Silver Cymbal’s video on cleaning and flushing tankless water heaters is really helpful, and I recommend it.
  4. I recommend that you take the time to view the five-minute video.

Conclusion

Using vinegar or a suitable cleaning/descaling solution in the heating chamber or a bucket is all it takes to flush a tankless water heater, which is simple and straightforward.The final step in the tankless water heater cleansing process is to allow the solution to settle for several minutes before dumping the cleaner into the sink.I hope you enjoyed this lesson and will spread the word about it to your friends and colleagues.You may also send me questions or comments on this guide, and I would be pleased to respond to you and share my ideas on the subject.

How to Clean Your Tankless Water Heater

It is possible for a tankless water heater to collect mineral build-up over time, which can corrode the walls of the heating chamber within the tank.For regular maintenance and cleaning of your tankless water heater, it is necessary to rinse those mineral deposits out at least once a year using a hose.Follow this straightforward 12-step procedure to verify that your tankless water heater performs and operates at peak efficiency.Please take the time to go through all of the directions before starting, as you’ll want to ensure that you have all of the essential items on hand for the procedure.If you are not confident in your ability to complete this process on your own, please call us to make an appointment with one of our highly qualified service professionals.

  1. Remove the tankless water heater’s power supply by following these steps: 1.
  2. Turn off the main gas valve or the circuit breaker for any electrical equipment that are not in use.
  • Turn off the three water valves that are connected to your tankless water heater by closing (turning them off). During the cleaning process, this prevents cold water from entering the water heater and hot water from exiting the water heater.
  • The water valves are comprised of three parts: a cold water valve (which is colored blue), a hot water valve (which is colored red), and a main valve, which is responsible for bringing water into your home.
  • 3. Remove the purge port valve lids from the purge valves situated on each of the cold and hot water valves one at a time, taking care not to damage them. The purge valves are distinguished by their little handles that mimic the letter ″T.″
  • In order to alleviate any pressure that has built up inside the valves and to avoid excessive hot water from pouring out during the cleaning process, this step must be carried out.
  • Because there may be pressure when removing the purge port valve covers, it is critical to double-check that the hot water valve has been properly switched off for your safety.
  • Make sure to handle each cap with care to ensure that the rubber sealing discs remain in place. These are required in order for your valves to operate correctly.
  • 4. Connect the hosing lines to each of the three valves on the system. Tankless water heater hosing lines are available at any home improvement store that carries water heaters if the manufacturer did not include them with your tankless water heater. There must be adequate length between the water heater and the bucket for the hosing lines to be effective.
  • Please refer to the tankless water heater manufacturer’s instruction manual, or contact the manufacturer directly if you require specific instructions on how to do this step.
  • In certain situations, you may be required to utilize a sump pump and connect hoses in order to discharge and flush water from the tankless water heater’s cold and hot water valves during this operation.

5.Twist the purge port valves so that they are perpendicular to the positions of the cold and hot valves, and then close them.6.To clean your tankless water heater, fill a large bucket with 2.5 gallons (9.46 liters) of undiluted white vinegar.Never apply any type of chemical solution on your skin.

  1. Using chemical cleaning solutions in your house might be particularly damaging to your health because the majority of the water used for drinking and bathing is likely to pass via your tankless water heater.

7. To complete the flushing and draining operation, according to the directions provided in your manufacturer’s handbook. It is possible that this treatment will take up to 45 minutes.

When the flushing procedure is finished, shut the purge port valves by twisting the T-shaped handles.9.Disconnect and remove each valve’s hosing lines from its mounting bracket.10.Attach the purge port valve caps to the purge valves using the hose clamps.

  1. Tighten the caps all the way down and securely.
  2. Take care not to overtighten the caps, as this might cause the rubber sealing discs within to crack or shatter.

If you need specific instructions on how to properly restart your water heater, see the manufacturer’s handbook. It may be necessary to rotate and open the cold and hot water valves such that they are parallel to the position of the main valve in order to achieve this result.

  • 12. Locate a sink tap inside the house and turn on the hot water gently to allow air to travel through the pipe. 13. Continue to flow the water until it runs consistently and without air escaping (a tiny sputtering sound may indicate that this has occurred).
  • It might take up to 2 or 3 minutes for all of the air pockets to be expelled from the system.

Call CES at 800-874-1975 or fill out the form below to get in touch. In the event that you have any queries concerning your service or the goods we provide, please contact us at info@combinedenergyservices.com. Please do not post a question about a service or product in the comments.

How to Flush a Tankless Water Heater (Step-by-Step Procedure)

Please keep in mind that this content may contain affiliate links.This means that, at no additional cost to you, we may gain a small profit on purchases made via our links.Knowing how to properly clean a tankless water heater will help you get the most out of your investment in terms of efficiency and durability as possible.Consider the following steps in detail, as well as some helpful tools and crucial considerations.

The Importance of Flushing Tankless Models

Tankless water heaters are less expensive and more energy efficient to operate when compared to standard water heaters.They also demand significantly less maintenance and operating area.Therefore, it is critical to understand why and when a tankless water heater should be flushed, as well as how to flush a tankless water heater, whether it is gas or electric.Examine how the naturally existing sediment in your water impacts the heater, as well as how to make flushing more convenient and safer.

Tankless Water Heaters and Scale Buildup

Anyone who has ever had a conventional water tank is aware with the necessity of flushing the tank on a regular basis in order to remove silt from the system.Tankless heaters are not an exception to this rule.Hard water includes minerals that can cause lime scale to build up on the surface of the water.An explosion from the accumulation is less likely to occur with a tankless heater than it is with a standard tank model, but it can still cause some expensive complications.The heat exchanger is particularly susceptible to scale buildup.

  1. As lime deposits accumulate in the unit, the heat exchanger is forced to work harder and more often in order to deliver hot water.
  2. This can result in a considerable reduction in the lifespan of this component, as well as a large rise in your electricity expenditures over time.
  3. To make matters worse, most warranties do not cover the effects of lime accumulation.
See also:  What Is The Best Hot Water Heater

How Often Should You Flush a Tankless Water Heater?

Tankless water heaters should be cleansed at least once a year to ensure that they operate at peak performance levels. However, the hardness of your water plays a role in this, and if your home’s water is very low in quality, you may find it necessary to flush two to three times a year. To a certain extent, a sediment trap or a water softener can help with hard water.

Isolation Valves

It is critical that we explain isolation valves before proceeding with the rest of the processes.As the name implies, an isolation valve allows you to isolate (isolate) a segment of your pipeline’s liquid or gas supply without having to shut down the entire supply line (as would otherwise be the case).Essentially, the word is equivalent with the term ″shut-off valve.″ From your stove to your toilet, a wide range of objects in your home are equipped with some type of isolation valve for maintenance or emergency purposes, depending on the item.These valves are available in a variety of designs, but they all fall into two fundamental categories: those that move in a rotational direction (such as a ball or butterfly valve) and those that move in a linear direction (ex: glove or diaphragm valves).In some cases, depending on the manufacturer and if a professional installed your tankless heater, an isolation valve may or may not be put on your tankless heating system.

  1. If your heater does not have this function, we highly advise you to get one installed as soon as possible and to engage a professional to flush the system while you wait, since it may be a significant safety issue while doing a flush or other maintenance tasks.

Using Pumps and Flush Kits

A submersible pump is one of your greatest friends when it comes to flushing a tankless water heater.Due to the fact that you do not have enormous volumes of water to sweep up and drag the sediment out, a quality pump such as the 91250 from Superior Pump will save you hours, if not days, of manual flushing time.Flushing will necessitate the use of a large bucket to contain the pump, since there is no easy drainage option available, as there is with a typical tank model, necessitating the use of a submersible model pump.A decent flush kit is yet another useful piece of equipment.These kits often include everything you’ll need, including a pump, bucket, descaler, and hoses, among other things.

  1. When you own a tankless heater, having a maintenance kit on hand might be a fantastic investment, even if it is not strictly essential.
  2. My favorite kit is made by My PlumbingStuff, and it not only works well and is simple to use, but it is also ecologically friendly down to the last component, making it the greatest tankless water heater flush kit in my opinion.

How to Flush a Gas Tankless Water Heater

  • Consult your water heater’s instruction manual for precise directions on how to cleanse and descale the unit. Rinnai, Rheem, and Noritz are the three most popular manufacturers of gas tankless versions. For your convenience, we’ve included particular guidelines for each of the brands listed below: Procedures for flushing a Rinnai tankless water heater, a Rheem tankless water heater, and a Notritz tankless water heater are all available online.

No matter what type of gas tankless water heater you have, there are a few steps in the flushing process that must be completed in the proper order, but they are all rather straightforward to complete.

Phase 1: Preparation

  1. Disconnect the electrical power source that is feeding the heater.
  2. Remove the access panel and check the terminal with a non-contact voltage tester to ensure that there is no longer any power coming through it.
  3. Discover where the gas isolation valve is located and close it.
  4. To prevent any water from entering the unit while you are working, locate the hot and cold shut-off valves and close them accordingly:
  5. To release any pressure, locate the hot water pressure relief valve, which should be located somewhere along the hot water line. Take cautious, because the hot water will be quite hot
  6. The service port for cold water and the service port for hot water will be separate. Hoses should be connected to both of these ports.
  7. Fill a five-gallon bucket halfway with water and submerge your submersible pump.
  8. The cold water pipe should be connected to your pump.
  9. Into the bucket, insert the free end of the hot water line
  10. Pour four gallons of undiluted virgin food-grade white vinegar into a pail and set it aside. (Note: As a heavy-duty alternative, Noritz recommends mixing one gallon of CLR with three gallons of water.

Phase 2: Flushing

  1. Make sure that the hot and cold service ports are open and that the pump is running.
  2. Make sure the vinegar is allowed to flow through the heater for at least one hour (longer if the pump runs at less than four gallons per minute). As a result of this, the scale is broken down and the silt is flushed away.
  3. Turn off the pump and empty the vinegar into a trash can.
  4. Close the cold water service port and disconnect the hose that is connected to it.
  5. Open the cold water shutoff valve to let any residual vinegar to be flushed out through the second hose into your bucket for around ten minutes.
  6. Close the cold water shut-off valve on your faucet.
  7. Allow the water to drain completely before disconnecting the second hose.
  8. Close the hot water service port on the boiler.
  9. Remove the cold water intake filter as well as the hot water inline filter (if applicable).
  10. Remove any retained sediment by flushing the filters with water in a sink.

Phase 3: Cleanup

  1. Reinstall the filter(s) in a secure manner, and then turn off the hot and cold water valves
  2. Replace the access panel
  3. turn on the gas shutoff valve
  4. and remove the access panel.
  5. The electrical supply should be reconnected.

How to Flush an Electric Tankless Water Heater

  • Flushing out an electric tankless water heater is a little different than cleaning out a gas tankless water heater, and some disassembly may be necessary. Generally speaking, Navien models are easier to understand, however some Takagi models require additional steps in order to properly place the water control valve. Technique for flushing a Navien tankless water heater
  • procedure for flushing a Takagi tankless water heater

Descaling an electric model is similar to descaling a gas model in that it may be divided into three stages.

Phase 1: Preparation

  1. Switching off the electrical power at the circuit breaker
  2. Close the cold water shut-off valve on your faucet.
  3. Open your taps to let any water that has accumulated in the heater to drain
  4. Close the shut-off valve for the hot water supply.
  5. Remove the access panel and check the terminal with a non-contact voltage tester to ensure that there is no longer any power coming through it.
  6. Disconnect the wires from the heating elements by removing the screws that hold them in place.
  7. Extraction of the heating element is accomplished by loosening the hexagonal brass top of the heating element in a counterclockwise manner
  8. Make a visual inspection of the heating components for evidence of damage. A broken element should be replaced as soon as possible.
  9. Storage of the heating elements in the cooper chambers of the heater to allow for cleaning of the heating elements

Phase 2: Flushing

  1. Fill the cooper chambers with virgin food-grade white vinegar that has not been diluted
  2. Pour vinegar into the chamber and allow it to rest for 90 minutes to two hours. Using this method, you may break up any scales on the components.
  3. Remove the vinegar from the mixture.
  4. Replace the heating elements and reattach the cables as necessary.
  5. Open the cold water shut-off valve and let the tank to fill up with cold water
  6. Observe the tank for any evidence of leakage (the paper towel test is quite effective in this situation)
  7. To turn off the hot water, turn the shutoff valve.
  8. Fill the sink with warm water from various hot water taps and let the water run for about five minutes to flush out the vinegar and remove any air pockets from the line

Phase 3: Cleanup

  1. Turn off all hot water faucets in your home.
  2. Close the cold water shut-off valve on your faucet.
  3. Clean any dirt from the cold water input filter by flushing the filter under a cold water faucet.
  4. Replace the filter in a secure manner.
  5. Power should be restored at the breaker once you close the access panel

How to Flush a Tankless Water Heater (Step-by-Step Procedure)

Please keep in mind that this content may contain affiliate links.This means that, at no additional cost to you, we may gain a small profit on purchases made via our links.Knowing how to properly clean a tankless water heater will help you get the most out of your investment in terms of efficiency and durability as possible.Consider the following steps in detail, as well as some helpful tools and crucial considerations.

The Importance of Flushing Tankless Models

Tankless water heaters are less expensive and more energy efficient to operate when compared to standard water heaters.They also demand significantly less maintenance and operating area.Therefore, it is critical to understand why and when a tankless water heater should be flushed, as well as how to flush a tankless water heater, whether it is gas or electric.Examine how the naturally existing sediment in your water impacts the heater, as well as how to make flushing more convenient and safer.

Tankless Water Heaters and Scale Buildup

Anyone who has ever had a conventional water tank is aware with the necessity of flushing the tank on a regular basis in order to remove silt from the system.Tankless heaters are not an exception to this rule.Hard water includes minerals that can cause lime scale to build up on the surface of the water.An explosion from the accumulation is less likely to occur with a tankless heater than it is with a standard tank model, but it can still cause some expensive complications.The heat exchanger is particularly susceptible to scale buildup.

  1. As lime deposits accumulate in the unit, the heat exchanger is forced to work harder and more often in order to deliver hot water.
  2. This can result in a considerable reduction in the lifespan of this component, as well as a large rise in your electricity expenditures over time.
  3. To make matters worse, most warranties do not cover the effects of lime accumulation.

How Often Should You Flush a Tankless Water Heater?

Tankless water heaters should be cleansed at least once a year to ensure that they operate at peak performance levels. However, the hardness of your water plays a role in this, and if your home’s water is very low in quality, you may find it necessary to flush two to three times a year. To a certain extent, a sediment trap or a water softener can help with hard water.

Isolation Valves

It is critical that we explain isolation valves before proceeding with the rest of the processes.As the name implies, an isolation valve allows you to isolate (isolate) a segment of your pipeline’s liquid or gas supply without having to shut down the entire supply line (as would otherwise be the case).Essentially, the word is equivalent with the term ″shut-off valve.″ From your stove to your toilet, a wide range of objects in your home are equipped with some type of isolation valve for maintenance or emergency purposes, depending on the item.These valves are available in a variety of designs, but they all fall into two fundamental categories: those that move in a rotational direction (such as a ball or butterfly valve) and those that move in a linear direction (ex: glove or diaphragm valves).In some cases, depending on the manufacturer and if a professional installed your tankless heater, an isolation valve may or may not be put on your tankless heating system.

  1. If your heater does not have this function, we highly advise you to get one installed as soon as possible and to engage a professional to flush the system while you wait, since it may be a significant safety issue while doing a flush or other maintenance tasks.

Using Pumps and Flush Kits

A submersible pump is one of your greatest friends when it comes to flushing a tankless water heater.Due to the fact that you do not have enormous volumes of water to sweep up and drag the sediment out, a quality pump such as the 91250 from Superior Pump will save you hours, if not days, of manual flushing time.Flushing will necessitate the use of a large bucket to contain the pump, since there is no easy drainage option available, as there is with a typical tank model, necessitating the use of a submersible model pump.A decent flush kit is yet another useful piece of equipment.These kits often include everything you’ll need, including a pump, bucket, descaler, and hoses, among other things.

  1. When you own a tankless heater, having a maintenance kit on hand might be a fantastic investment, even if it is not strictly essential.
  2. My favorite kit is made by My PlumbingStuff, and it not only works well and is simple to use, but it is also ecologically friendly down to the last component, making it the greatest tankless water heater flush kit in my opinion.

How to Flush a Gas Tankless Water Heater

  • Consult your water heater’s instruction manual for precise directions on how to cleanse and descale the unit. Rinnai, Rheem, and Noritz are the three most popular manufacturers of gas tankless versions. For your convenience, we’ve included particular guidelines for each of the brands listed below: Procedures for flushing a Rinnai tankless water heater, a Rheem tankless water heater, and a Notritz tankless water heater are all available online.

No matter what type of gas tankless water heater you have, there are a few steps in the flushing process that must be completed in the proper order, but they are all rather straightf

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