Navien Tankless Water Heater Condensate Drain

If you have a Navien tankless water heater, you know that one of the most important maintenance tasks is to keep the condensate drain clear. A clogged drain can cause serious problems, including water damage to your home. In this post, we’ll show you how to clear a clogged Navien tankless water heater condensate drain.

If you have a Navien tankless water heater, you know that it’s a great way to have hot water on demand. But did you know that your Navien tankless water heater can also produce condensate? This happens when the water in the tankless heater is heated to the point where it starts to produce steam.

The steam then condenses on the cold water lines and drains back into the tankless water heater. The good news is that the Navien tankless water heater is designed to handle this condensate and drain it away from the unit. However, it’s important to make sure that your condensate drain is clear and unobstructed so that the water can drain properly.

If you’re not sure how to do this, you can always contact a Navien service technician to help you out.

Navien NPE-240S water heater leak on condensate syphon

How do you drain the condensate in a tankless water heater?

If your tankless water heater is producing condensate, there are a few different ways you can go about draining it. One way is to simply open up the drain valve and let the water drain out. You may need to use a funnel or some other type of container to catch the water as it drains out.

Another way to drain the condensate is to hook up a hose to the drain valve and run it to a drain or outside. This is a good option if you don’t want to deal with the water inside your home. If the condensate is coming from the exhaust, you can try to redirect it to a different location.

This might involve cutting a hole in the exhaust pipe and attaching a hose to it. You’ll need to make sure the hose is properly secured so that it doesn’t come loose and cause problems.

How do you clean the condensate trap on a Navien tankless water heater?

If your Navien tankless water heater is not draining properly, it may be due to a clogged condensate trap. The condensate trap is designed to catch any water that condenses inside the unit. Over time, this water can build up and cause the trap to become clogged.

To clean the condensate trap, you will need to first shut off the power to the unit. Next, remove the access panel to the condensate trap. The trap is typically located near the bottom of the unit.

Once the trap is accessible, use a small brush or pipe cleaner to clean out any debris that may be blocking the trap. Once the trap is clear, reattach the access panel and turn the power back on to the unit. If your Navien tankless water heater is still not draining properly after cleaning the condensate trap, it may be due to a more serious issue.

Does the tankless water heater need a drain?

A tankless water heater does not need a drain. The unit is designed to heat water on demand, so there is no need to store hot water in a tank. When you turn on the tap, cold water enters the unit and is rapidly heated to the desired temperature.

Tankless water heaters are very efficient since there is no heat loss from a stored tank of hot water.

Why do tankless water heaters have a condensate drain?

If you have a tankless water heater, you know that one of the maintenance requirements is to occasionally check the condensate drain. But what exactly is the condensate drain, and why does your tankless water heater have one? The condensate drain is a small pipe that drains any water that condenses on the heat exchanger.

The heat exchanger is the part of the tankless water heater that actually heats the water. Because the heat exchanger gets very hot, any water that comes into contact with it will instantly turn to steam. However, not all of the water will turn to steam.

Some of it will condense on the heat exchanger. This condensation is actually good for the heat exchanger because it helps to keep it clean and free of scale. The condensate drain is there to make sure that this water doesn’t build up and cause problems.

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Navien tankless water heater condensate drain size

If you have a Navien tankless water heater, you may be wondering what size condensate drain you need. The size of the drain will depend on the model of Navien tankless water heater you have. The table below shows the minimum drain size for each model.

Model Number Minimum Drain Size (inches) NPE-180S ¾ NPE-240S 1

NPE-300S 1 If you have a Navien tankless water heater that is not listed in the table, you can contact Navien customer service for more information. When choosing a condensate drain for your Navien tankless water heater, it is important to make sure that the drain is the correct size.

If the drain is too small, it could become clogged and cause your Navien tankless water heater to malfunction.

Navien condensate trap o-ring

If you have a Navien tankless water heater, you know that one of the most important parts of the unit is the condensate trap. This trap helps to prevent water from leaking out of the unit and onto your floor. The condensate trap is made up of a few different parts, one of which is the o-ring.

The o-ring is a small, but important, piece of the condensate trap. It helps to seal the trap and prevent water from leaking out. If your o-ring is damaged or worn, it can cause water to leak out of the unit.

You should check your o-ring regularly and replace it if necessary. If you need to replace your Navien condensate trap o-ring, you can find the right one for your unit by checking the manual or contacting the manufacturer. Once you have the correct o-ring, you can install it yourself or have a professional do it for you.

Navien condensate drain fitting

If you have a Navien tankless water heater, you know that one of the most important parts of the unit is the condensate drain fitting. This part ensures that any condensation that forms on the unit is properly drained away, preventing any damage to the unit or your home. The condensate drain fitting is located on the bottom of the unit, and is made of PVC.

It is important to keep this fitting clean and free of any debris, as it can clog and cause problems with the unit’s operation. If you notice any condensation around the fitting, be sure to wipe it away and check the fitting for any blockages. If you need to replace the condensate drain fitting, it is important to use a Navien-approved replacement.

These fittings are designed specifically for Navien units, and will ensure that your unit operates properly and safely.

Conclusion

If you have a Navien tankless water heater, you know that it’s a great way to save space and energy. But did you know that your Navien water heater also has a condensate drain? The condensate drain on your Navien water heater is there to collect any water that condenses on the inside of the unit.

This water is then drained away, keeping your Navien water heater clean and free of any build-up. If you notice that your Navien water heater is leaking, it’s likely that the condensate drain is the culprit. To fix the problem, simply unplug the unit and allow the water to drain out.

Once the water has drained, plug the unit back in and turn it on. If you have any questions about your Navien water heater, or if you need help troubleshooting a problem, be sure to contact a qualified technician.

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