Rooftop Units explained - RTU working principle hvac

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RTU Rooftop units explained. In this video we'll be looking at how RTU's work to learn HVAC engineering. We'll be starting with the basics and looking at different 3D models to cover the internal components such as dampers, fans, filters, cooling coils etc. We'll also look at typical setups to help you build your base knowledge.
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Пікірлер: 102

@EngineeringMindset 5 жыл бұрын

⚠️ *Found this video super useful?* Buy Paul a coffee to say thanks: ☕ PayPal: www.paypal.me/TheEngineerinMindset

@cameron3991 2 жыл бұрын

I'm a commercial hvac tech and your videos are amazing keep up the good job! I know guys that are in our apprenticeship class use your videos a lot! Nobody makes commercial hvac videos like this.

@wiserdaley2191 4 жыл бұрын

I'm thankful for smart 👍 folks like you. I pretty much attend school on your channel.

@stourleykracklite7663 3 жыл бұрын

As far as background music goes, this video is the best. Because it actually accomplishes something, namely a lively air in terms of selection and volume that helps the viewer focus on the speaker. Woe to those viewers who have been subjected to videos featuring video makers' favorite music. Because, well, they have have bad taste in music. And, as all who have such taste, they like it loud.

@siranton14 Жыл бұрын

these videos are so good. Simple, straight forward and easy to understand .

@Tyler-Woody 2 жыл бұрын

Great video!!! Easy to follow along and understand . Great visuals and great pace . Thank you for the content

@KingKrilly 5 жыл бұрын

You are amazing !!! THANK YOU

@domovoikuzmich9695 Жыл бұрын

Thank you for this video! You are the best.

@MrKelly-ll1lx 4 жыл бұрын

Thank you! Very helpful!

@georgewashington7863 5 жыл бұрын

I'm working on a rooftop unit as we speak, found out the economizer is bad/ much appreciated 👍🌟🌟🌟🌟🌟

@joanbea3902 4 жыл бұрын

Thank you it is clear and easy to understand

@Saturdayz_In_The_Fall 5 жыл бұрын

I love assembling air handling units especially the rooftop units for Nortek Air Solutions I do my best to make sure that no water can leak through

@NeoEon 25 күн бұрын

Subscribed. Excellent HVAC theory. I know all this, but it was a quick refresher on RTU's and reminded me of important principles. Thank you!

@redsquirrelftw 4 жыл бұрын

When you mentioned the grid to stop animals and debris from entering it reminded me of one of our units at work that failed in a really weird way. They never figured out the cause so not sure if it has to do with something that got in but basically the main blower shaft was bent and it started to oscillate. The bend got worse and worse and it was basically shaking the whole building! We could hear various "tick tick tick" vibrations in the ceiling in random parts of the office, just from the false ceiling and light fixtures etc, and thought it was odd but did not think much of it. This got worse until one of us realized there was a really intense pulsating feeling on the 2nd floor. It was almost like a powerful subwoofer feeling and it felt different depending where you stand. The unit was in that room on the roof cooling that room. Supposedly the vibrations could be felt even outside the building at one point. The shaft that was bent was several inches in diameter, they still have no idea what happened, but it's fixed now. As a side note, getting parts from Carrier is like pulling teeth... They sent the wrong parts at least 3 times.

@abdelilahchichou2412 5 жыл бұрын

very well explained. RTU also used a Hot water heat chilled AC, would be great if you can make a video about it

@EngineeringMindset 5 жыл бұрын

Learn how *AIR HANDLING UNITS* work here ➡️ kzfaq.info/get/bejne/gamZqZt6prvPmGw.html

@felixfernandez442 4 жыл бұрын

EXCELLENT INFORMATION

@celtongerilla6595 5 жыл бұрын

Thank you! Great and helpful video for us - a young aspiring students.

@harbardtan596 Ай бұрын

thank you for the info.

@franckjeanfrancois1677 11 ай бұрын

found this video very instructive

@IngDzib 2 жыл бұрын

Thank you Paul

@grantjohnson880 2 жыл бұрын

Great video!

@stevenmartin2217 3 жыл бұрын

Very useful video.

@mukeshram3587 3 жыл бұрын

Thank you sir helpful

@edunewton1386 5 жыл бұрын

A packaged air conditioning means an AHU unit with an inbuilt cooling unit ( that is no attached component such as chillers). This Air Handling Unit cools the air and sends this cooled air through a defined route duct work. The returned air is leaves the building through a defined route duct work to the exhaust channel in the AHU unit.

@leftenantthunder 3 жыл бұрын

fantastic video

@chrisdc5244 2 жыл бұрын

I love painting unit like that!

@afrog3569 Жыл бұрын

Awesome info

@AKaufman 2 жыл бұрын

Thank you.

@hankuraj9892 2 жыл бұрын

Very useful

@bhushanpawar8855 5 жыл бұрын

Excellent explanation..really impressive

@EngineeringMindset 5 жыл бұрын

Thank you, glad you enjoyed it

@osamamashal2602 5 жыл бұрын

Thanks for your efforts So, RTU and PACU are the same?

@EngineeringMindset 5 жыл бұрын

RTU is a type of PACU

@osamamashal2602 5 жыл бұрын

@@EngineeringMindset can you tell me what are the other type of PACU

@richarddorr32 5 жыл бұрын

A packed unit is a unit that contains all of the system components in one unit. In a home the evaporator is inside while the condenser is outside. In a packed unit all of the components are inside of one unit, like in a RTU.

@bunnyman6321 Жыл бұрын

Simple as that

@redsquirrelftw 4 жыл бұрын

I've seen some units that have an inside unit, which will have a full cooling cycle with compressor, and then will have an outside unit which will also have another compressor and cooling cycle, and there is glycol lines going between them. Essentially the glycol is used to cool the condenser and compressor in the indoor unit. What is the advantage of this vs just having a split system? Is it because a refrigeration loop has a limited working distance and the glycol lines can go further?

@issaabdulganiyu5728 Жыл бұрын

Thank you it is clear and easy to understand, but made me remember our ahu that is not cold when we on it, can thermostat on actuator be reset

@amirhoseinsamiee638 Жыл бұрын

tanks

@kevinpoulet149 5 жыл бұрын

Can you please make a video on equal friction and/or static regain calculations, including transition pieces and a wye (y) junction in the example. I’m taking a ventilation systems class now and this video would help soo much

@EngineeringMindset 5 жыл бұрын

Check out our ductwork video

@satratey 5 жыл бұрын

Thank you for the great video, sir. When I saw a belt drive blower watching your video, one question came in my mind. Where do we use a belt drive blower; where do we use direct drive blower?

@EngineeringMindset 5 жыл бұрын

It used to come down to space. It was more compact to place the motor on a belt drive. Now it comes down to money. Direct drive is more expensive but more efficient. Belt drive is cheaper to buy initially but more expensive to run because it's less efficient and required more maintenance and spare.

@satratey 5 жыл бұрын

@@EngineeringMindset Thank you, Sir.

@b.Ivey85 3 жыл бұрын

Can you do a video about high, medium and low pressure systems and their different applications? Clean air systems would be a great topic also medical,lab and food filtration! Grease duct and hoods as well

@b.Ivey85 3 жыл бұрын

😂 i see this comment being like the Vince McMan meme 🤣🤣🤣

@jonnewlin9102 2 жыл бұрын

Do you guys have a video about makeup air units specifically?

@murtajabeg6801 4 жыл бұрын

Sir you explain about the valve of ahu

@DrWenChannel Жыл бұрын

How to apply the right coating for anti-corrosion for rooftop units, especially for ducts exposed on the rooftop? Thanks!

@manojillangasooriya3590 4 жыл бұрын

thanks mate. I did a small paypal contribution too.

@EngineeringMindset 4 жыл бұрын

Thanks for your support, much appreciated

@patrickfarrell7753 5 жыл бұрын

Is there a fan on the return air or does the suction from the supply air fan do both? Thanks!

@EngineeringMindset 5 жыл бұрын

Some units will have a fan there, some will use the suction side. Depends on the design and the building.

@drjny 5 жыл бұрын

The first RTU shown with only outside air is called a dedicated outside air system or DOAS.

@ting2732 3 жыл бұрын

I am not sure if you have answered this, but what's the difference between a RTU and Dedicated Outdoor Air System (DOAS)?

@zjfrancisco6882 4 жыл бұрын

Package ac unit is a combined unit, it is the bigger version of Window type ac. Only the difference is.. It is connected to a duct work. Correct me if I'm wrong. Thanks..

@ansaruLhaQ18 5 жыл бұрын

Can u please explain what is decoupler line in primary and secondary pumps of chilled water

@EngineeringMindset 5 жыл бұрын

Hi yes watch our chilled water schematic video

@gulnozkhojaabbos5646 3 жыл бұрын

How u can be sure that exhaust air is going to different direction but not to fresh air blower and distribute the very bad smell into the flats. I am suffering with this issue, specially in Summer in Dubai. Do u know how long lasts Summer in Dubai? Exhaust air and fresh air can’t be in the same side and over each other, weird construction. Look at the grid which stops the front air and collect the air from exhaust air. Thank u for this video, it helped me to understand where that bad smell is coming from

@twojhjjj 5 жыл бұрын

Why did you choose the garden state plaza in Paramus NJ for the rooftop? I know that roof.

@EngineeringMindset 5 жыл бұрын

It was completely by chance. I zoomed in on Google maps and there happened to be RTU's there so I recorded it. Small world huh.

@mb7762 3 жыл бұрын

Haha good eye. I live in bergen county.

@Zeddify 11 ай бұрын

A packaged unit is a type of AC unit which houses the condenser unit and air handler together.

@laxkid6783 Жыл бұрын

As someone who is looking to get into hvac and needing training and nate certification how would yall recommend going about doing this.

@nadeeshdhanushka1793 Жыл бұрын

Can you explain about mark-up air?

@JosckyPambu 10 ай бұрын

Salut ! Mon air handling unit ne fonctionne pas bien,mais le tension est normal

@hacker2ish 5 жыл бұрын

Should call your channel the refrigeration mindset

@sillywaiii 5 жыл бұрын

Hey bro, could you make a video for explaining the electric wiring connection in a typical chiller during a start-up process. Thanks.

@EngineeringMindset 5 жыл бұрын

We have one on chiller controls kzfaq.info/love/k0fGHsCEzGig-rSzkfCjMwvideos

@l.crossjr 5 жыл бұрын

Any videos on chiller controls?

@EngineeringMindset 5 жыл бұрын

Yes, check our other videos

@khattakjani5663 5 жыл бұрын

Helo sir . I hope you will be good and fine. Make a video about pipes welding because the welding is also play important role in chiller water pipes.

@vinodasokan8056 3 жыл бұрын

Where does the cooling coil get the water from?

@markyangson9188 Жыл бұрын

We will about to Do HVAC on a 600 sqm Disco club can you advise what to do about HVAC? Do we need a RTU and Split type aircons?

@edunewton1386 5 жыл бұрын

question: don't we have a packaged AHU that are not installed on rooftops? If we do kindly give an example, please

@redsquirrelftw 4 жыл бұрын

A lot of them are installed outside the building on the ground, then have two ducts going into the wall. I think they basically work the same way. My church has one. I think this is typical for buildings that don't have a flat roof as there is no way to install it on the roof. Also less chance of leakages. A roof top unit is harder to install properly as if you don't seal things right you can get leaks.

@clements.2345 4 жыл бұрын

Can a RTU installed in a sloped roof (1:100)? How efficient would that be? It seems to me that it will be impact the flow air and liquid in the unit.

@scotteckart1401 3 жыл бұрын

A flat (perpendicular to the ground) mechanical curb could installed and supported on the the sloped roof, that way the RTU itself would be flat. But as long as the ducts connected to the unit into the building are where they need to be, there wouldn't be any issue with the air flow and refrigerant flow inside the unit if it were sloped. The refrigerant is being pumped around and so it would flow no problem.

@georgewashington7863 5 жыл бұрын

Can you do video on economizers

@EngineeringMindset 5 жыл бұрын

Have you check out our video on AHU's and chiller terminology, there's some info in there too

@georgewashington7863 5 жыл бұрын

@@EngineeringMindset ok I'll review them

@scottfrench4985 4 жыл бұрын

a package unit it condenser and evaporator in the same unit.

@jaysonteodosio3000 5 жыл бұрын

Are RTU direct or indirect cooling systems?

@augusto0o0 5 жыл бұрын

This is something I was asking myself. If I'm not mistaken, they're direct expansion systems. And to me this means the evaporator unity is the single coil connected to the refrigeration system, but out of its chamber, according to the video.

@RealGigaMind Жыл бұрын

Is this also called packaged rooftop air conditioner?

@elangz9201 5 жыл бұрын

Sir can you make a video about economizer? Im struggling to see how economizer can be installed to an RTU so it can provide free cooling. Isnt traditional RTU can also allow 100 percent of cool outside air to pass in order to achieve free cooling? Thank you sir any answer will be appriciated

@gzealous4456 2 жыл бұрын

Only part I'd change is the purpose of access panels. I've yet to see an engineer out in the field doing the maintenance.

@andreaspandega6319 3 жыл бұрын

If the exhaust placed directly under the intake (which is facing down because of the air hood), wouldn't some of the exhaust air get sucked into the intake?

@EngineeringMindset 3 жыл бұрын

Yes

@DailYxDosE 2 жыл бұрын

4:19 shouldn’t the flow be reversed?

@LuizDahoraavida 3 жыл бұрын

inb4 dassault systems fluid simulations

@LuizDahoraavida 3 жыл бұрын

nope

@mohitpandurangwaghade5 5 жыл бұрын

Sir if don't mind, can I use your video animation in my KZfaq video, to explain it in other languages in my country. ...

@EngineeringMindset 5 жыл бұрын

No thank you. We are working on languages ourselves and do not want our viewers going to another channel to view our content. To run a successful channel you must make original content yourself.