Wiring Diagram For Electric Water Heater Thermostat – Note. This post may contain affiliate links. This means there is no cost to you, we may receive a small commission for your purchase.
Water heaters are great appliances. They save energy and reduce our carbon footprint. But they still need regular maintenance.
Wiring Diagram For Electric Water Heater Thermostat
If you want to get the most out of your water heater, you should check its efficiency regularly and make sure it is running at peak performance.
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A properly functioning boiler provides hot water around the clock. The water temperature depends on the type of water heater you have.
For example, gas or electric boilers produce hot water, while tankless water boilers produce hot water immediately.
You can easily install a new water heater yourself. All you need is a wrench, some tools and a little time.
In this article, we’ll show you how to hook up a water heater and teach you important information about them that you need to know as a homeowner.
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A thermostat is an electronic device that controls the temperature in your home. It is usually located near the stove or boiler, but if there is no space next to the appliance, it can be installed elsewhere.
There are two types of thermostats: upper thermostat and lower thermostat. You need both thermostats to connect the water heater.
Both thermostats are interchangeable with other brands, so it doesn’t matter which one you use.
You also don’t have to replace the thermostat with the same brand you used before if you don’t want to.
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Don’t worry too much about which thermostat you want to buy because they are similar. Here is a list of thermostats we recommend:
If you are looking at this end of the spectrum, remember that a 180 degree thermostat is ideal for commercial water heaters designed for this high temperature.
Although all thermostats are replaceable, it is still important to choose the right one to avoid disappointment.
The last thing you want to do is buy a thermostat for commercial use, not for residential use, only to have it installed for you and cause more problems for which you have to pay more!
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But remember that all thermostats are interchangeable, meaning they are all the same.
Both the Apcom low-density thermostat and the Therm-o-disc low-density kit come with two 240V 4500W low-density components, an upper and a lower thermostat.
The temperature difference might make you think they are not interchangeable, but they are. This is because they are more suitable for residential use than commercial water heaters.
For example, the Apcom high-density kit and the Therm-o-disc high-density kit both include the following: two 240V 4500W high-density components, an upper and lower thermostat.
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Again, the temperature range is different: 110-160 degrees for the Apcom series and 90-150 degrees for the Therm-o-stat series.
Low density thermostats are generally suitable for residences where the tank is not used frequently or occasionally when the tank is not in use.
High density thermostats are often suitable for commercial applications where the tank is used frequently and/or during peak periods.
Low density applications can last longer with hard water, so this is definitely another factor to consider when choosing a thermostat.
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If you live in an area with soft water, you may be able to use a high density component without risking its life.
Keep in mind that new water heaters usually have high-density components. But as we already said, you don’t need to buy another high density when replacing it.
There are several different types of water heater and the one you choose will change how it is wired.
Some lines are easier than others, but you should choose the right one based on your personal situation.
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Non-simultaneous thermostats do not turn on at the same time. One is always on while the other is off.
This applies unless the water heater is connected for other reasons at the owner’s discretion.
Since both the upper and lower thermostats are never in the same position, they are called non-simultaneous thermostats.
To adjust the temperature of these thermostats, simply use the thumb screw to change the desired range. The internal temperature should be between 90 and 150 degrees Fahrenheit.
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You need to connect L1 and L2 of the 240V water heater to the upper thermostat.
T2 and T4 operate from the upper thermostat. T2 is attached to the upper element and T4 moves down to the lower thermostat.
The lower thermostat and the lower element, as well as the upper thermostat and the upper element, must be connected together.
Some households find that they need two water heaters and therefore need a thermostat to control both at the same time.
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The good news is that you can do this by connecting them together. This is a form of simultaneous wiring!
By adding another water heater to your home, you can avoid running out of hot water even at the busiest times.
This means everyone can shower, the work is done and the heating can stay on all day without anything getting cold.
Foam insulation is a great option if your water heater isn’t heating up fast enough. However, it may be necessary to drill a long hole in the center of the tank to connect the wires.
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This can allow heat to escape, so make sure the thermostat is not near them as this can cause the temperature to read incorrectly.
The 240V water heater consists of two wires coming from the circuit breaker – both are hot and one is tested with a 120V voltage ground.
As the thermostat turns on and off, it sends heat from the second wire to the element. The heat then switches the cell to the on or off position.
The thermostat is now hot, either T2 or T4 (sometimes labeled 2 and 4), but not both at the same time.
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The bottom thermostat is located on the first water heater and will do one of two things:
However, the second water heater does not switch to the on position and therefore does not start heating until the first boiler is turned off.
When the first water heater reaches temperature, it moves to the off position and then the second water heater can use the full 240 V power to heat itself.
Start with the 10 watt wire connected to the circuit breaker. It connects two heaters and their corresponding thermostats.
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The first water heater requires two upper thermostats and the second needs one upper thermostat and one lower thermostat.
L1 will be attached to the circuit breaker and L3 will be attached to the 10 watt wire. Both are first attached to the upper thermostat.
The upper thermostat and the upper element should also be connected, as should the upper thermostat and the second lower element.
Now moving to the second water heater, L1 runs from the second top heater to the first water heater to the top boiler of the second water heater.
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T2 and T4 both come from the upper thermostat. T2 reaches the upper element while T4 is connected to the lower thermostat.
In new water heaters, instead of traditional thermostats, the number of electronic thermostats is increasing.
Some believe they are more convenient for users and prevent people from replacing them themselves.
However, this is not the best news for those who like to save money and do it themselves. Electronic thermostats are more expensive and require certain parts to be replaced.
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Some think this is a marketing ploy to keep people from buying regular replacement parts, since you now have to switch to the manufacturer of the thermostat.
We’ve talked a lot about thermostats, but what’s the alternative? A simultaneous water heater means that both operate independently of each other.
They are used for water heaters that require more power than a single thermostat can provide. This could be due to its large size or constant high demand.
If you wish, you can replace the low temperature regulator with a thermostat with ECO protection, and each thermostat is wired separately.
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Each element uses about 4,500 to 5,500 watts of power, so you’ll need to connect each thermostat to a different breaker.
This means you may need more wiring than with a non-synchronous thermostat.
Parallel wiring means that there are two thermostats in one water heater, but they are not connected together.
Both are connected to the circuit breaker from wires L1 and L3 – so there are two wires on the top two.
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