How To Install An Electric Tankless Water Heater

How to Install a Tankless Water Heater

Instructions from a professional on how to remove an old water heater tank, prepare the area for installation of a tankless water heater, and finally install the tankless water heater Because it does not store a huge amount of heated water, a tankless water heater, also known as an on-demand water heater, saves money over a traditional water heater. Essentially, it serves to give hot water on demand, so you won’t have to worry about the shower suddenly being chilly. The process of installing a gas tankless water heater consists of mounting the unit, connecting the gas and water lines, and installing a flue.

Therefore, it may not function well in a family where two or three showers may be operating at the same time, as an example.

It is both small and very efficient to use a tankless water heater.

The following skills are required if you opt to conduct the task yourself: shutting off the water to your house (seeHow to Shut Off the Water to Fixtures) and cutting into and connecting new fittings and pipes to your supply pipes (if you have copper pipes, seeCuttingJoining Copper Pipe).

There is also the need for a gas line and an electrical connection to a 120-volt circuit.

It is not necessary to vent an indoor electric tankless water heater to the outdoors because it is contained within the home.

It may either be hooked into a 240-volt outlet or directly attached to a power source such as a generator.

Tankless Water Heater Preparation

Remember to complete all essential preparations before disconnecting and removing your present water heater; you don’t want to be without hot water for a week or two while you wait for any plumbing, electrical, or vent work to be completed. If you are installing a new gas unit, you should determine whether you need to upgrade your gas meter. Because the unit consumes a considerable amount of BTUs, it is possible that your meter does not have the capacity to feed it in addition to the other gas-using appliances in your home.

  • Request that the gas provider inspect your new unit to ensure that it is receiving the appropriate amount of manifold pressure for it.
  • It is better to employ a professional plumber to install a new gas line if you need to replace an existing one.
  • This will save you time and money.
  • The fact that a tankless water heater generates a significant amount of condensation and pushes air out with a fan necessitates the installation of category II stainless-steel exhaust pipe with firmly sealed silicon joints, as seen in the second video below.
  • A damper is an excellent addition for those who live in colder climates since it prevents chilly air from re-entering the home.
  • Floor drains and utility sinks should be used to dispose of the excess liquid.
  • In addition to gas, a gas unit requires 120-volt electrical power.
  • You can watch this wonderful video from This Old House, which will provide you with an excellent explanation of the many stages involved in installing a tankless water heater.
  • He makes the decision to remove and replace his malfunctioning water heater with a tankless water heater, and he guides us through the entire procedure with his hands on assistance.
  • Codes demand that a subpanel (which may or may not be included with the unit) be erected next to the unit in order to comply.

Connect the wire to the subpanel and then from the subpanel to the unit, starting at the unit. It is essential that the electricity to the water heater’s circuit is turned off at all times while the work is being performed. +Find a Water Heater Installation Specialist in Your Area

Removing the Old Water Heater

In the majority of circumstances, a new tankless water heater will be installed in lieu of an existing storage water heater. In Ron Hazelton’s video above, he refers to our website for the directions, which are as follows: How to Flush or Drain a Water Heater (with Pictures). In order to remove the old water heater, turn off the valves on the two water lines (one for the input and one for the output) that lead into the existing water heater and disconnect them. To remove and detach the water heater’s lines from the water heater, use channel-type pliers or a pipe wrench.

  • Drain the tank by opening the drain valve located at the bottom.
  • Don Vandervort writes for HomeTips.
  • A segment or two of vent pipe should be disconnected and removed.
  • If you decide to handle it yourself, cut off the circuit at the service panel and check to be that the power has been turned off completely.
  • If you require assistance with this project, contact a local water heater professional.

Installing a Tankless Water Heater

Tankless units can be fitted flush against the wall (against the drywall or plaster), or they can be inserted into the wall between the studs. Using a stud finder, identify the studs in the wall where you want to install the unit, and then cut a hole between each of them. Attach the item to the wall in accordance with the manufacturer’s recommendations. Water supply pipes should be routed to the water heater. Make certain that the pipe from the water utility is linked to the inlet and that the pipe flowing to the home is connected to the outlet before starting the project.

  1. You might also want to consider installing a pressure-relief valve.
  2. The water valves should be opened, but not those for the power or gas.
  3. Close the water valves and turn off the water.
  4. Replace the filter, turn on the water valves, turn on the electrical power, and turn on the gas valves if necessary.

Finally, test the equipment to ensure that it is in proper functioning condition. Resource Highlighted: Find a Pre-Screened Water Heater Pro in Your AreaCall today for free estimates from pre-screened water heater professionals in your area: 1-866-342-3263

How to Install an Electric Tankless Water Heater + Requirements

It is possible to install a new tankless unit flush against the wall (against drywall or plaster) or inserted into the wall (between the studs). Using a stud finder, identify the studs in the wall where you want to install the unit, and then cut a hole between each stud. According to the manufacturer’s instructions, mount the item to the wall. Supply lines for water heater should be routed accordingly. Check to see that the pipe from the water utility is connected to the inlet and that the pipe heading to the house is linked to the outlet before proceeding.

  • A pressure-release valve may also be required in your installation.
  • But don’t turn on the electricity or gas while you’re doing this!
  • Water valves should be shut off.
  • Replace the filter, turn on the water valves, turn on the electrical power, and turn on the gas valves if needed.
  • Resource of the Week: Local Pre-Screened Water Heater ProfessionalsCan you help me find a pre-screened water heater professional in my area?Call for free estimates from local professionals now: 1-866-342-3263
  • Installation requirements for electric tankless water heaters
  • Power needs
  • Water pressure requirements
  • Permits
  • And other considerations
  • Where to install
  • Tools and equipment
  • And a step-by-step guide on how to install a tankless electric water heater yourself
  • Installing recirculation of water in hot water pipes
  • Insulating hot water pipes

Electric Tankless Water Heater Installation Requirements

What are the prerequisites for putting up an electric tankless water heating system?

Electrical Service Requirements

The installation of a whole-house electric tankless water heater is not appropriate for every residence. This is due to the fact that the amp draw of such a system is far too high. Consider the following example: The Stiebel Eltron Tempra 36 Plus requires three separate dedicated 50A double pole breakers, in addition to a minimum 300A main service recommendation. The average home has a total capacity of 200A, to put this in context: That means you may need to replace your existing electrical service panel with larger cables and breakers, or you may need to install a fully new one, which will cost you a couple of thousand dollars in electrical labor.

The Stiebel Eltron Tempra 36 Plus is available for purchase on Amazon.

When it comes to amperage needs, a point-of-use (POU) electric tankless water heater should not pose a difficulty.

What is the best way to ascertain the current size of your home’s electrical system?

You should look for an electrical breaker box, which is normally located outside the house. Alternatively, you might check for a label in your electrical panel. You might also inquire with your electrician about this matter.

Water Pressure Requirements

The majority of electric tankless water heaters are capable of operating at pressures ranging from 30 to 150 psi. It is necessary to install a pressure reduction valve upstream of the water heater when the incoming water pressure is more than 150 psi.

Permits

As a homeowner, you are often permitted to complete the installation of your own water heater. For safety inspections, however, you will still need to get a permit in the majority of states. This is also true when it comes to replacing an aging water heater. It is possible that a plumbing inspector may visit your home and go over the installation to ensure that it was done correctly.

Where to Install

Installing a water heater on your own as a homeowner is typically permitted. For safety inspections, however, you will still need to get a permit in most states. Likewise, replacing an outdated water heater is a good idea in this case. It is necessary for a plumbing inspector to visit your home and go over the installation to ensure that it was completed correctly.

  • Your water heater would be splashed with water or other liquids on a regular basis
  • Nonetheless, It is possible to experience freezing temperatures.

Additionally hazardous are high levels of wetness and humidity. If you do not follow these instructions, your product warranty will most likely be voided. The following are some of the tools and equipment that you may require to correctly install your new electric tankless water heater: You haven’t made a decision on a system yet? Check out our electric tankless water heaters reviews to pick the best one for your needs and budget! You can learn more about how to correctly size an electric tankless water heater by visiting this page.

Tools

  • An adjustable wrench, a pipe cutter, a pencil, and a tape measure are also included. A drill and drill bits, a flat head screwdriver, a Phillips head screwdriver, needle nose pliers, a flat head screwdriver, and a Phillips head screwdriver are also included.

Supplies

  • Screws and anchors (which should be included with the system)
  • Piping, 3″ or 12″ in diameter (for example, copper pipe or stainless steel flex pipe)
  • Valves for shutting down
  • Temperature and pressure relief valve (T P)
  • Pressure reduction valve (PRV)
  • The following items are required: Teflon tape, sand paper, pipe insulation, double pole circuit breakers, wire and ground, recirculation pump with cross-over valve

It is possible that you will require additional soldering tools and materials.

How to Install an Electric Tankless Water Heater Yourself Step by Step

Before you begin, please keep in mind that this step-by-step installation instruction is simply intended to serve as an illustration. The procedures necessary to set up your individual water heater may differ from those listed above. You avoid this, be sure to read the complete product documentation. Furthermore, faulty installation will almost certainly void the warranty, may shorten the system’s lifespan, and may even result in significant physical damage or death if done incorrectly. So if you are unsure of what you are doing, do yourself a favor and get a certified electrician and plumber to complete the installation for you instead.

Additionally, some manufacturers require that their systems be installed by a licensed contractor in order for the guarantee to be valid; otherwise, the warranty would be void immediately.

Disclaimer: It is strongly suggested that this task be completed by a qualified individual.

  1. First and foremost, switch off all circuit breakers that are implicated. Shut down the main water supply line
  2. It may be essential to drain and disconnect your old water heater. Remove any screws that hold the front cover of the device that you wish to install in place by unscrewing them. Remove the front cover, but be careful: the inside of the cover may be damaged. It is possible that you may need to remove one or more plugs before you can put it aside. The electric tankless water heater should be mounted to the wall. In the box should include screws and anchors, as well as instructions. It’s time to connect the cold (often on the right side of the pipe) and hot (typically on the left side of the pipe). When doing this, stainless steel flex pipe (34″ in diameter) in conjunction with Teflon tape is probably the most convenient option. You might also use copper or PEX tubing as an alternative (should be rated for high temperature applications). Not to mention the fact that certain water heaters are equipped with a filter screen at the cold water input that has to be cleaned on a regular basis. This is why it’s critical that the cold water connections may be disconnected with relative simplicity. If you need to cut into a pipe, make sure the edges are clean. Remember to clean the pipes before connecting them to the water heater, and that excessive heat might cause damage to the device during soldering
  • The installation of a shut-off valve before and after the heater is suggested, as this will allow you to switch off the water supply to the unit for maintenance purposes without having to turn off the water supply to the rest of your home. By the way, this is a good opportunity to put in a pressure reduction valve on the cold water side, just in case the incoming water pressure exceeds a specific threshold value ( read more ). A temperature and pressure relief valve (T P) – which should be fitted on the hot water side – should not be necessary unless specifically required by local or state installation requirements
  • Nonetheless,
  1. Remove any air from the pipes and water heater by opening many hot water faucets for a couple of minutes each time they are used. In the meanwhile, you may inspect all of the connections for leaks. Close all electrical outlets
  2. Attention: Refer to the wiring diagram in the handbook for further information! The following stage is to connect the electrical components, starting with the water heater on one side and ending with the electric panel on the opposite. For information on the proper wire size and circuit breaker numbersize, consult the manufacturer’s instructions. To connect small equipment to a single circuit, one set of 6/2 AWG wire and one ground protected by a 50A double pole breaker, for example, can be used in conjunction with a single set of 6/2 AWG wire. Larger units may necessitate the use of two or three different circuits, as well as heavier wire. Cut each wire set to the required length and stripping thickness, then pass it through the bottom holes in the water heater housing and securely attach it to the corresponding slots on the terminal block (see illustration) (check manufacturer instructions for optimal torque). A ground conductor must be connected between the unit’s grounding busbar and the circuit breaker panel for each circuit. Check all of the electrical connections one more time. Check to make sure that you did not mix up the different wire set combinations. Reinstall the front cover of the system. Make sure all of the circuit breakers are turned on
  3. Your electric tankless water heater should be operational at this point. It may be configured according to your tastes, for example, by altering the water temperature to the appropriate level. Open a hot water supply valve. Wait until the temperature has returned to normal. Check the temperature and make any necessary adjustments
  4. Done
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Installation Video

Do you prefer video? You might find the following information useful: Finally, some further observations:

Expenses

Would you rather watch a film?

It’s possible that the following will be of use to you: To conclude, here are some further observations:

Insulation on Hot Water Pipes

Children should be protected against burns by having low-hanging hot water pipes coming from the water heater properly insulated.

Installing Water Recirculation

Children should be protected from burns by having low-hanging hot water pipes coming from the water heater insulated.

  • You simply have to wait a few seconds before you can start using the hot water. In addition, because you do not have to flush gallons of cold water down the toilet, virtually no water is wasted.

What is the operation of a recirculation pump? The majority of people use a sensor to detect the temperature of the water near the heater or at a specific fixture. When the temperature of the water falls below a specified threshold, the pump begins to operate. What is the mechanism through which the water can return? There are two alternatives:

  1. Your home already has a recirculation line (also known as a dedicated return line), or you choose to create one, which is a more expensive option. You should install a cross-over valve at the farthest fixture from your heater if at all possible. The hot water line is connected to the cold water line by this one-way check valve. It opens and closes in response to the temperature of the water. The cold water can then be returned to the heater through the cold water line in this manner.

After reading this, you might be thinking: “A recirculation pump in conjunction with an electric tankless water heater would result in a significant loss of energy as a result of the constant pumping and re-heating.” And you were correct, assuming you didn’t utilize any sort of intelligent control to begin with. It is possible to program the pump to function only at specific times of the day using smart controls. These controls may be as simple as a timer, a button, a motion sensor, or a remote.

  • Available on Amazon.com, the Laing Recirculation Pump with TimerThermostat is a great addition to any home.
  • A pump with insufficient flow would fail to activate the water heater if the pump was too tiny.
  • We welcome any questions or comments you may have on how to install a tankless electric water heater in the comments section below.
  • She is the head of content production and has completely immersed herself in the home water treatment sector, resulting in her becoming an expert in the field herself.
  • Find out more about.

How To Install an Electric Tankless Water Heater ️ UPDATED 2020

Anyone who has done any type of DIY knows that the most important guideline is to plan ahead of time. You should never get into a job without fully comprehending what it entails. In addition, you should avoid tackling any jobs that are outside of your specific skill set and experience. Are you considering the installation of an electric tankless water heater? Take precautions. BeVERYcareful. If you are not already familiar with the process, you should think carefully before attempting to install your own electric tankless water heater.

  • Rather of doing it yourself, get a professional to do it for you.
  • For starters, no one loves electric fires, but this is a pretty simple method to get one going in no time at all.
  • Please conduct your study, and if you feel that this work is too difficult, enlist the assistance of a professional.
  • However, if you want to proceed in a safe manner, please see the following installation advice.

Let’s start with the most fundamental of the first few stages. Despite the fact that they are not the most interesting, they are unquestionably the most important. For installation in a residential premise, the following are some of the specifications:

Can You Provide the Power?

DIYers are well aware that the golden rule is to plan ahead of time in order to avoid costly mistakes. Always take the time to learn the details of a job before jumping in. You should also avoid handling any duties that are outside of your specific area of expertise. Is it in your plans to install a tankless electric water heater? Precautions must be taken! BeVERYcareful. If you aren’t already acquainted with electric tankless water heaters, you should think carefully before attempting to install one yourself.

  • Rather of doing it yourself, employ a professional to do so.
  • For starters, no one loves electric fires, but this is a pretty simple method to get one going in no time at all!
  • Prepare thoroughly and, if you believe the work is too difficult, get the assistance of a professional.
  • Here is the installation tutorial, though, if you want to continue with caution.
  • Despite the fact that they are not the most interesting, they are without a doubt the most important.

Do You Know Your Water Pressure?

Does your knowledge of pressure gauge reading make you feel confident in your abilities? Do you know how strong your water pressure is? And, if your water pressure is higher than 150 psi, do you have a pressure release valve installed in your home to protect you? If this is the case, an electric tankless water heater will not work in your house, and you should not waste your money on one. Pressure ranges for most electric tankless water heaters are between 30 to 150 pounds per square inch, although they are rarely higher than that.

Are You Permitted to Install an Electric Tankless Water Heater?

Does your knowledge of pressure gauges extend to how to read them properly? Do you know how much pressure your water has? – If your water pressure is greater than 150 psi, is there a pressure release valve installed in your home? If this is the case, an electric tankless water heater will not work in your house, and you should not waste your money on one. Water pressure varies from 30psi to 150psi for most electric tankless water heaters, however they are rarely used at higher pressures.

  • A drill and drill bits, a Phillips screwdriver, a flat head screwdriver, pliers, a pipe cutter, and an adjustable wrench are all necessary tools. For the new heater, you’ll need screws and anchors to secure it in place (these will be provided with it). Flex pipe made of copper or stainless steel
  • A shut-off valve, a T P (temperature and pressure) valve, sealing tape, and pipe insulation are all required. Electrical circuit breakers with two poles
  • Grounding wire

Instructions for Tankless Water Heater Installation

OK. For those of you who are ready to get started, we’ve included a step-by-step guide that you may refer to for guidance. Make certain that you have enough time. In the average home, it would take a qualified craftsman 2 or 3 hours to install a tankless water heater with a tank. However, for someone who has never done this before, it is preferable to leave more time. We’ll take a look at the procedures that must be followed in order to safely install the new tankless heater. First and foremost, this film is well worth your time.

Installation Instructions for a Tankless Water Heater |Ask This Old House In all seriousness, I’d want to underline how hazardous this activity may be if you aren’t familiar with what you’re getting yourself into.

Again, we recommend that if you are unclear of how to go about such an assignment safely, you call and employ a professional who is knowledgeable in the field.

Turn off all circuit breakers.

Taking this action might very well save your life. The combination of water and live electric lines is, I believe, universally recognized as being undesirable.

Turn off the water supply.

It appears to be self-evident, doesn’t it? However, you’d be amazed at how many individuals flood their houses as a result of undertaking home improvement work. This technique might potentially save you tens of thousands of dollars in damage to your property.

Drain and disconnect the old heater.

In order to remove the old wall mounting brackets, you must first detach the connecting pipes, then remove the wire and last remove the wiring harness. Take care not to damage any of the existing pipes or wiring, or you’ll have to replace them as well, making an already difficult process even more difficult. When removing the front cover of the new unit that you will be installing, exercise extreme caution. This may be accomplished with the use of an appropriate screwdriver. Remove all of the screws from the front of the device and store them somewhere safe so that you don’t lose track of where you put them.

  1. Pulling the top off the heater should be done cautiously since there may be a few connections attached to the main unit, particularly if your heater includes an LCD screen.
  2. This is something you do not want to break.
  3. Make certain that it is in an accessible location that will not be obscured by other goods in storage and that it is easily accessible in an emergency.
  4. This phase should not be too tough for those with good dexterity.
  5. Because most electric tankless water heaters are one-way only, and their connections are often located on the bottom, they are typically located on the bottom.
  6. However, if this option is not accessible to you while installing your heater, it is still feasible to connect the main water supply to the electric tankless water heater using PVC (if it is adequate and can withstand high temperatures) or copper.
  7. If you have used PVC or copper, for example, make certain that the quality of your work and the smoothness of the edges are taken into mind to prevent damage to any threads from occurring.

If you want to do this, we recommend installing an electric heater-specific shutoff valve, rather than a valve that shuts off water flow throughout the whole house at once.

Install pressure valve (if required)

In most cases, you will not be required to install a pressure release valve on the “hot water” side of your tankless electric water heater unless your local plumbing authorities specifically request it. In order to secure your safety and the safety of your family, we highly advise you to install a pressure release valve on the cold side of your heating unit.

Bleed the hot water system.

You should now have the device installed and linked, and you should be good to go. However, make certain that you have not yet turned on the cold-water supply and that the mains water has not been turned on. It is now necessary to bleed your hot water distribution system. Go around your house and turn on all of the hot water faucets. This procedure eliminates any air from your hot water system and prepares it for usage with the tankless electric heating system. Continue this procedure for a few minutes, and then turn off all of the electrical outlets in the house.

Check electrical connections.

Consider taking a long, hard look at your electrical connections. Is the wiring in place and in good condition? Are they seated at the proper terminals? Do you think everything is operating as it should? This step must not be skipped since it might mean the difference between life and death. As soon as you have finished completely inspecting your electric tankless water heating unit, reinstall the screws that you removed from the unit’s cover and gently reattach the cover to the heating unit.

Turn on circuit breakers.

We’re almost there! Put your circuit breakers back in the on position and get ready for action.

Check temperature settings.

The finish line is in sight! Put your circuit breakers back in the on position and get ready to go.

Resources

Before commencing the installation procedure, please make sure that you have a copy of the manufacturer’s handbook on your computer. PDF versions of the documents may be obtained by clicking on the following links:

  • Before commencing the installation procedure, please make sure that you have a copy of the manufacturer’s handbook on hand. To obtain a PDF copy, click on the following links:

How to Install a Tankless Electric Water Heater: A 10-Step Guide

An Overview of the Process of Installing or Replacing an Electric Water Heater

  • Step 1: Turn off the circuit breaker and shut off the water supply. Step 2: Turn off the water heater. Step 3: Take off the front cover. Step 4: Install the water heater. Step 5: Join the pipes together. Install the flow and pressure valves in the next step. Burning the hot water system is step 7. In Step 8, you will inspect the electrical components. Activate the circuit breaker (Step 9)
  • Tenth step: check the temperature and outlets
See also:  How To Detect A Gas Leak From Water Heater?

The first step is to turn off the circuit breaker and turn off the water. Disconnect the water heater’s power supply; Removal of the front cover is the third step. Water heater installation (step 4) The fifth step is to join the pipes. Install the flow and pressure valves in the next step (6). Burning the hot water system; Step 7. Electrical components should be inspected in Step 8. Activate the circuit breaker in step nine. Temperature and outlets should be checked in step 10.

1. Switch Off Circuit Breaker and Water Supply

Immediately before to beginning the job, it is critical that the circuit breaker be turned off in order to guarantee that the electric wires are not powered on while you are working. At this time, you should also switch off the water supply to your home unless you want to risk flooding your home while attempting to replace your present water heater with a new one. Always keep in mind that flooding may cost tens of thousands of dollars in damage, which is why doing the first item on this list is the most critical.

2. Drain Your Old Heater Before Disconnecting It

The tank-type water heater that is now installed in your home will need to be drained prior to being removed from the structure. This will necessitate the use of a hose and a container, such as a bucket. Check out our how-to guide on how to drain a water heater for more thorough information. The old wiring and wall-mounting brackets will need to be removed first, and then the connecting pipes will need to be unscrewed.

Be careful not to do any harm to the old wiring or pipes while performing this procedure. If so, they will need to be replaced entirely, which would simply lengthen the project’s timetable and increase its expenses.

3. Remove the Front Cover

The front cover of the new tankless unit should be carefully removed with a screwdriver before the unit can be installed. Once all of the screws have been removed, store them in a safe location where they will not be misplaced. It is vital to use all of these screws in order for your water heater to perform correctly. Take into consideration the possibility that wires will be connected between the cover and the device. Carefully unplug the cables before removing the lid completely.

4. Mount the Water Heater

Following that, the device will need to be attached to a wall. Make certain that the water heater is not installed in a cluttered or disorganized location of your house or business. Having said that, it’s critical that you have quick access to the unit in the case of an accident or other emergency. Mounting the water heater is straightforward and may be accomplished using a combination of screws and the mount that comes with the unit. Follow the installation instructions that came with your item.

5. Connect Any Pipes

Upon completion of the installation, you will need to connect the pipes that will deliver hot water throughout your home. These are the connectors that will be used to bring water into and out of your water heater. They should be positioned at the bottom of the unit, if possible. When you receive your device, it is possible that you may be given an installation diagram, which you should look to in order to establish where the connections should be made. Stainless steel is the ideal sort of pipe material for a tankless water heater since it is corrosion resistant.

Copper and PVC piping are suitable alternatives to stainless steel piping if you do not have access to stainless steel pipes.

Many instruction manuals recommend that you clean your equipment on a regular basis.

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6. Install Flow and Pressure Valves

As soon as all of the connections have been completed, it’s time to install the flow and pressure control valves. Flow valves are straightforward to install. In the event that repairs are required, you may simply cut off the water supply to the heater rather than having to shut off water throughout the rest of your property. Pressure valves are only required if and when the local plumbing authority specifies that they are needed. The pressure release valve should be put on the side of the electric water heater that is closest to the “hot water.” To ensure optimum safety, you might also install one on the other side of the heater from the heater.

7. Bleed the Hot Water System

When you get to this step of the installation procedure, you should have the water heater connected and completely installed. However, you’ll still want to go through the process of bleeding the system before turning on the hot water supply.

Every hot water outlet in your home should be opened, as this will aid in the removal of any air that may have accumulated in the system. Ensure that these outlets remain open for a few minutes, following which the bleeding procedure should be finished successfully.

8. Inspect Electrical Connections Before Attaching Cover

It is critical that you take the time to verify the electrical connections to your water heater in order to protect your own safety as well as the safety of everyone else in your family. Check to see that the connections are correctly connected and that the terminals have been placed in the proper locations. After that, the cover should be reattached using all of the screws that were previously used. The installation process is practically complete once the unit’s cover has been properly put on top of the device.

9. Switch Circuit Breaker On

It is safe to turn on the circuit breaker now that you are no longer need to perform any maintenance on the heater directly.

10. Check Temperature and Test Outlets

Once the water heater has been switched on, you’ll want to adjust the temperature settings on the system. Because these units may get extremely hot when used at their maximum settings, it is suggested that you avoid using them in order to reduce the possibility of burns. This is also a good time to check every hot water outlet in your home, including taps, showers, dishwashers, and laundry washers, to ensure that the temperature is proper and that the water warms up quickly. Turning down the temperature settings may be necessary if the water is becoming too hot to handle.

Thinking of upgrading to a tankless water heater? Before doing so, learn the pros and cons of installing one

Are you considering making the switch to a tankless water heater? Before doing so, educate yourself about the advantages and disadvantages of installing one, including the cost, needs, and upkeep. It is possible that you are considering installing a tankless water heater in your house if it is time to replace your current water heater. We’ll explain how tankless water heaters function and point out some of its pros and downsides to assist you in making the best decision about which kind to install.

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How Tankless Water Heaters Work

Known variously as demand type, on-demand, or instantaneous water heaters, these appliances heat water directly, eliminating the need to store water. A flow detecting device is installed in a tankless heater, and it is triggered anytime the hot water tap is opened. A gas burner or an electric element is used to heat the water, which is then sent to the various locations in your home where it is needed. You won’t have to worry about running out of hot water because there isn’t a tank that has to be filled.

Advantages Of Tankless Water Heaters

  • They are more compact than typical storage heaters, are wall-mounted, and do not take up any floor space when not in use. As a result of their size, they can be particularly appealing in houses where space is limited
  • They can also help you save money on your energy bills. According to the United States Department of Energy, heating water accounts for around 30% of a family’s total energy use. It is possible to save up to 50% on these expenditures by installing a tankless water heater, resulting in an average yearly savings of $80. Tankless water heaters are also more durable and less likely to malfunction, resulting in potentially disastrous flooding in your house. Compared to traditional water heaters, tankless systems have a lifespan that is about twice as long – 20 years or more.

Disadvantages Of Tankless Water Heaters

  • They are more compact than typical storage heaters, are wall-mounted, and do not take up any floor space when in operation. When it comes to homes where square footage is limited, their size may make them particularly appealing
  • They can also assist you in lowering your energy expenditures. Energy expenses for heating water account for around 30% of a family’s total energy bills, according to the United States Department of Energy. It is possible to save up to 50% on these expenditures by installing a tankless water heater, resulting in an annual savings of around $80. Tankless water heaters are also more durable and less likely to malfunction, resulting in potentially disastrous flooding in your house. Compared to traditional water heaters, tankless water heaters have a lifespan that is about twice as long – 20 years or longer.

Gas or Electric

Electric tankless water heaters are significantly less expensive than their gas counterparts. Installation is less complicated and less expensive, and they are often less difficult to maintain than gas-powered ones. Only a few handful, however, have the capability of serving many locations at the same time. Gas units are available in a wide range of types and sizes for both residential and commercial applications, with outputs ranging from 130,000 to 380,000 BTUs in certain cases. More BTUs equate to more heating capacity.

As a result, your home’s gas pipe, meter, and main line to the meter may not be correctly proportioned, necessitating a costly reconfiguration and installation of new equipment.

The total energy efficiency of a tankless water heater is assessed using an energy factor (EF) rating, which is available for both gas and electric types.

Tankless water heater energy factors now range between.64 and.91 for gas-fired devices, and up to.99 for electric versions, depending on the manufacturer.

For a home of one or two persons, a tankless electric unit will most likely be more than sufficient. For bigger families, a gas-fired tankless water heater is most likely the most cost-effective option.

Water Heater Protection

Water heaters that are powered by electricity are less expensive than those powered by natural gas. Installation is less complicated and less expensive, and they are often not as difficult to maintain as gas-powered versions are. But only a select handful are capable of serving many locations at the same time. Gas units are available in a wide range of types and sizes for both residential and commercial applications, with outputs ranging from 130,000 to 380,000 BTUs in size. Increasing the BTU output results in increased heating power.

  • It is possible that the plumbing, meter, and main line to the meter in your home are not appropriately proportioned, and that a costly reconfiguration and installation will be required.
  • EF ratings are used to determine the overall energy efficiency of tankless water heaters, which is applicable to both gas and electric types.
  • Department of Energy were used to get this EF ranking.
  • When it comes to water heater efficiency, a greater energy factor indicates a more efficient unit.
  • A gas-fired tankless water heater is most likely the best option for bigger families.

How to Install or Replace a Tankless Water Heater

Despite the fact that it’s a tankless job, someone has to do it. Leaving aside the dad jokes, installing a tankless water heater is a serious undertaking that should be approached with caution. Our goal is to make this process as simple and pleasant as possible, so we’ve included step-by-step instructions for both gas and electric units below. Take note that replacing a tankless water heater is a time-consuming process requiring advanced technical knowledge. So, if you aren’t confident in your plumbing and electrical abilities, it is preferable to engage a licensed professional – in certain areas, this is a legal requirement.

How to Install a Gas Tankless Water Heater

Installation and replacement of tankless water heaters may be quite expensive, as we realize. Installing your own unit is doable, but we recommend that you proceed with caution. This should only be attempted if you have extensive experience working with gas lines, water lines, and electrical systems. Installing your tankless water heater incorrectly might result in significant harm to your home. Unsafe gas line installation may cause explosions, while faulty gas venting can result in deadly carbon dioxide leaking into your house.

If you are considering a do-it-yourself installation, it is critical that you understand the terms of your insurance policy.

You can install your unit yourself if you are confident in your abilities and have double-checked with your insurance company. The instructions below will guide you through the process.

Step 1

Depending on the manufacturer, if their systems are not installed by certified professionals, the warranty may be voided.

Step 2

Make certain that you obtain all necessary state or local permissions before installing or upgrading a water heater.

Step 3

For water pressure more than 80 psi, you’ll need to install a pressure-reducing valve upstream of the new water heater before it will work properly. When establishing the cold and hot water connections (as described in the section below under “Establish the cold and hot water connections”), you should consider whether or not you need to install one.

See also:  Who Installs A Hot Water Heater?

Step 4

  • Make sure you check your local construction codes to see where you may put your water heater in your home. These tankless gas systems must be vented directly to the outdoors, rather than through a chimney, in order to function properly. Consequently, it is vital to identify a position where the unit may readily vent outdoors while also complying with local code requirements for vent placement. Carefully review the manufacturer’s installation instructions to ensure that you have adequate clearance around the device
  • Stay away from locations where:
  • Temperatures below freezing might have an impact on the unit. Any form of liquid might be sprayed on the device on a regular basis. There is a significant amount of humidity and wetness

Step 5

Make careful to accurately measure the space where you intend to install the water heater to ensure that you acquire the appropriate-sized unit.

Step 6

  • Tankless gas water heaters consume more gas than traditional tank-style water heaters. Determine whether or not your present gas line will be sufficient initially
  • If not, upgrade it. A professional contractor will be required to install a newer, larger gas pipe if your present gas line is unable to keep up with the demand.

Step 7

  • If there isn’t a shut-off valve before the heater, cut off the main water supply
  • Otherwise, turn off the heater. Remove the heater from service by closing all power and gas supply valves to it. Drain the contents of the unit.
  • When dealing with hot water, utilize a hose that is designed to tolerate high temperatures. To relieve pressure in the system, open a hot water faucet for a few minutes. Allow it to completely drain

Removing the water heater from the gas and water supply pipes is necessary. Make sure to properly dispose of your old water heater.

  • For information on how to properly dispose of it, contact your local recycling and/or sanitation agencies.

Step 8

  • Ensure that the device is properly supported by constructing a mounting box that is approximately four inches away from the wall. The foundation wall should be properly secured with appropriate anchors. Follow the manufacturer’s instructions for mounting the device to the box firmly.

Step 9

  • Hiring a professional contractor should be your first choice unless you have extensive knowledge with gas line installations. Utilize a threaded black iron pipe to connect the existing tee to the unit position if your present gas line is the suitable size and you can connect it without breaking the existing connection. Remember to switch off the main gas line before removing the down pipe from the previous unit if you’re replacing it. After ensuring that the gas line is routed to the right location, you should install a tee, a sediment trap, and a gas shut-off valve. The shutdown valve and sediment trap should be connected to the heater in accordance with the manufacturer’s instructions. Install a new gas supply line from the tee to a location where it can be conveniently connected to the gas line of the new unit. You may utilize a black pipe or a flexible gas supply line to accomplish this task. Assemble the connections in the direction of the heater, starting with the tee, using two wrenches. Whenever possible, use thread sealant developed for gas lines when connecting gas pipe assemblies. After you have completed all of the gas line connections, you should test the line. Before turning on the gas, check the pressure with a pressure gauge.

Step 10

  • Connecting the water heater valves to the water supply line should be done according to the manufacturer’s instructions.
  • Connecting new hot and cold water lines to existing water lines should be done with copper pipe. Continue to connect the wires to the new unit. It is possible that copper pipe will need to be cut and soldered to the unit.

Depending on whether your water system includes an anti-siphon valve or a check valve on the supply line, you may require an expansion tank close to the cold intake. More information may be found in your vehicle’s owner’s handbook. Bell hangers should be used to secure the pipe to the wall. Place the pressure relief valve in its proper location. Installing a purge valve and a pressure relief valve should be done according to the manufacturer’s instructions.

Step 11

  • Make sure there are no leaks by turning on the water supply. To check for leaks, turn on the gas and wait a few minutes. It is possible that you will need to bleed the line. Afterwards, switch off the gas supply until the installation is complete.

Step 12

  • When it comes to correctly venting the device, follow the manufacturer’s recommendations as a reference. There’s a considerable probability that you’ll be able to vent your water heater straight through the rim joists in your home. Only utilize pipes that have been specifically designed for this sort of venting. In some cases, depending on the manufacturer, you may require a vent kit. Make sure that the vent shaft of the new unit is sealed with a heat-resistant silicone sealant. Afterwards, attach a connection to it and secure it with an appropriate hose clamp
  • Place a length of stainless steel vent pipe on top of the structure. Put on a retaining ring to keep it in place. Folding over the tabs can help to keep it secure. Slip an elbow inside a pocket. Make sure that the aperture faces the direction in which the unit will vent to the outside
  • Select a spot on the joist or wall that will serve as the center of the vent hole for the purpose of venting outdoors. Drill a hole from the inside of the building at the location you’ve picked. Make a circle on the outer wall with a vent thimble and tape it in place. A spade bit should be used to bore a 1-inch hole at the center of the circular. Remove siding and shingles from around the vent hole in order to allow the flange thimble to be flat against the outside wall
  • Caulk around the edge of the flange with silicone caulk to seal the edge of the flange to the outside wall. Then, place the flange into the vent hole that has been created. Use screws to securely fasten it to the outer wall and silicone to seal the screws in place. Installing the internal flange should be done from the inside. A portion of vent pipe should be routed through the flange aperture. Tabs should be used to secure each part. Attach a short portion of vent pipe to the outside of the house and then connect the vent hood
  • Put the shingles and siding back on the house that you removed previously.

Step 13

  • To remove air from the water pipes and heater, turn on the faucet to its full “hot” setting. Close the water supply valve

Step 14

Connect the water heater to the wall outlet. That is all there is to it.

Step 15

The hot water line that originates from the water heater should be insulated.

Step 16

The gas should be turned on when the installation is complete. Your water heater should be up and running at this point!

How to Install an Electric Tankless Water Heater

Installation and replacement of tankless water heaters may be quite expensive, as we realize. Installing your own unit is doable, but we recommend that you proceed with caution. This should only be attempted if you have extensive experience working with water lines and electrical systems. Installing your tankless water heater incorrectly might result in significant harm to your home. If you are considering a do-it-yourself installation, it is critical that you understand the terms of your insurance policy.

You can install your unit yourself if you are confident in your abilities and have double-checked with your insurance company.

Step 1

Depending on the manufacturer, if their systems are not installed by certified professionals, the warranty may be voided.

Step 2

Confirm that your electrical service panel has the capacity to manage the energy demands of an electric tankless water heater before installing one. It’s possible that you’ll need to upgrade your panel or install a whole new one. It is possible to uncover useful information by inspecting your electrical breaker box or the label on the electrical panel in your home.

You might also consult with an electrician. The majority of suitable water heaters require a minimum of four 40AMP breakers to deliver hot water for a two and a half bath house.

Step 3

For water pressure more than 80 psi, you’ll need to install a pressure-reducing valve upstream of the new water heater before it will work properly. When establishing the cold and hot water connections (as described in the section below under “Establish the cold and hot water connections”), you should consider whether or not you need to install one.

Step 4

Make certain that you obtain all necessary state or local permissions before installing or upgrading a water heater.

Step 5

  • In order to heat water for the entire house, it is best to locate the unit closest to the area in which the majority of the hot water is consumed. If you’re installing a point-of-use system, try to locate them as near to the points of use as feasible. Always keep in mind that most electric tankless water heaters must be mounted vertically, with the water and electrical supply connections on the bottom of the unit. Follow the manufacturer’s recommendations for leaving a particular amount of clearance for service
  • In general, you want to stay away from locations where:
  • Temperatures below freezing might have an impact on the unit. Any form of liquid might be sprayed on the device on a regular basis. There is a significant amount of humidity and wetness

Step 6

Disconnect any circuit breakers that are connected to the new device. This is critically crucial!

Step 7

You don’t want your office to become a swamp!

Step 8

  • If there isn’t a shut-off valve before the heater, cut off the main water supply
  • Otherwise, turn off the heater. Remove the heater from service by closing all power and gas supply valves to it. Drain the contents of the unit.
  • When dealing with hot water, utilize a hose that is designed to tolerate high temperatures. To relieve pressure in the system, open a hot water faucet for a few minutes. Allow it to completely drain

Removing the water heater from the gas and water supply pipes is necessary. Make sure to properly dispose of your old water heater.

  • For information on how to properly dispose of it, contact your local recycling and/or sanitation agencies.

Step 9

  • Remove any screws that are holding the front cover of the new device in place
  • And Please keep in mind that you may need to remove at least one plug before you can set it aside.

Step 10

A set of adequate anchors and screws should be included in the box.

Step 11

  • Connections for the cold and hot water should be made. Colds are typically seen on the right side of the body.
  • The quickest and most straightforward method is to use stainless steel flex pipe with Teflon tape. You can also utilize copper tubing that has been rated for use in high-temperature environments. If you have to cut into a pipe, make sure the edges are clean. Before connecting the pipes to the water heater, flush them with water once they have been soldered. Also keep in mind that too much heat might cause harm to the water heater. If you want to do maintenance on your heater, it’s a good idea to install a shut-off valve before and after it. This will allow you to stop off the water supply to the unit without shutting off the water supply to the rest of your home
  • If you need to install a pressure reduction valve, you should do it immediately on the cold water side of the plumbing system. The installation of a temperature and pressure relief valve is unlikely to be necessary (T P). However, you should double-check your local and state installation rules to see whether or not you require a permit.

Step 12

  • By opening various hot water outlets, you may remove any trapped air from the device and the pipes. While you’re waiting, you should inspect each and every connection for leaks.

Step 13

This step must not be skipped!

Step 14

  • Heater on one side, and electrical panel on the other, is the recommended arrangement
  • Comply with the manufacturer’s wiring diagram and their instructions for selecting the appropriate wire, circuit breaker number, and circuit breaker size
  • And After cutting and stripping each wire set to the proper length, push the wires through the bottom holes in the new water heater’s housing. Then, fasten the wires to the appropriate slots on the terminal block using wire nuts.
  • For the most appropriate torque, see the product handbook. It is important to remember that a ground conductor must be connected to the circuit breaker panel and the grounding busbar of the unit for each circuit.

Test every electrical connection to ensure that you have correctly installed all of the wire sets in their proper locations.

Step 15

Make use of the screws that you already removed.

Step 16

The device should be turned on at this point. Select your chosen unit settings from the drop-down menu.

Step 17

Start by turning on the hot side of a faucet in your home. After the water temperature has steadied, take another reading. The temperature may be adjusted on the device itself if you desire to do so.

Learn More About Tankless Water Heaters

Start by turning on the hot side of a faucet in your house. After the temperature of the water has steadied, take another reading of it. The temperature may be adjusted on the device itself if you choose.

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