VRF Variable Refrigerant Flow Units - HVAC Online Training and Courses

Thank you mr

Love u sir great love from Pakistan

THANK you

What about vrf subcooling

Hello Sir, can i do VRF course online

Cool!!!!

Any see that he is writing backwards, as well as writing with both hands? That's skill!

Thank you, Is there an explanation for how simultaneous heating and cooling work?

Julio thank you very much for your teaching we really appreciate it you , we learned allot from all your teaching videos , stay safe tc we need you here so we can lean more, God bless you and all your family, thanks again from Boise Idaho

Good information. I like how you made it simplistic.

Thanks for sharing ...it is very educative

Samsung DVM PLUS4 VRF System Error 458 How to repair please guide line training give me

Sir help me have one vrf out door unit not outo start power off after on start but not outo start what's problem

Batherway Mr. Hullio,is that box you are talking about called ahybrid box or is something else? Thanks

You are the best Mr Hulio.

Thanks for this, very clear explanation

Great video 💯💯💯💯💯, I got a better understanding of the functionality of a VRF.

Great video 💯💯💯💯

Such a helpful video great job!

very good information and great explanation with pictures. would you be able to explain the three pipe VRF systems. I know they have one suction and liquid line in addition to another line can be neither nor. Not sure how it works, when three pipes going to branch selector boxes and the room zoning one called for heating and the other one for cooling. much appreciated.

Thanks with your help today

Great tutorial sir. It cleared all my doubts regarding vrf. Thanks a lot

Very well explained.
What if I have Dx system 1- 1 (5tr) and VRF system (5Tr) which is also DX. Both type of system has inverter compressors but why VRF system piping length is allowed upto 100mtr and normal DX system upto 15mtrs only ?

I need an expository explanation on the VRF units installation and how it works

very good information on VRF. I think only DAIKEN is using this system in their machines. Please show this machines working and also charging this system as it is looking more complicated compare to conventional machines. Thanks.

Very good thanks

Julio..my man well explained 👏GD

Thank you for the explanation!
I have a VRF system Of Toshiba

The upper units in the rooms produce ice while operating on cooling (It can be one unit or several units together)
What could be the reason?

Please discuss how the proper pumping down parallel rack systems

pls need help ! i have Samsung 48k vrf outdoor unit pressure is good , NO ERRO CODES , i have 2 indoor units 2x24k ducted , both indoor units workd fine for last couple years ! but last 2 weeks im having problem with only 1 indoor unit it blows 78 deegress on the cool setting 64 degrees ( while other indoor working fine 64 deegres , when i shutoff good working indoor unit my outdoor compressor start freezing up, can you pls explain what it is the issue can be? I try to call samsung customer serves no help on they behave

is there used a liquid pump in vrf system...?

Hello sir,
Your videos are very helpful to understand the concepts. I have been working as service engineer in VRF system.
Could you please help me what could be the possible reason of higher temperature of liquid refrigerant entering into evaporator?

can we take a moment to appreciate how he's both ambidextrous and can write backwards?

What is the name of this "box" that speaks to the compressor to control the refrigerant flow?

i knew when I saw the batman shirt that this was going to be good. thanks

Thanks in a million.

If we were to charge this system would I have to take superheat readings at each individual evaporator or is it okay taking it at the suction line 'systemSuperheat'

Julio your presentation was easy to follow. What's the recommended size of VRF condensing unit for 4 bedroom apartment w/ 1x14k & 4 x 9k evaporators?

I would like too see more of your videos in vrf systems. With its receiver tank,thermistor location and so on in vrf systems. I got confused in the last part because when one of the inside unit is satisfied is sends a signal to close the eev in the branch box . And when all unit are satisfied it pump Down and close all eev in the branch box. I am just saying. Willing to learn more about vrf. Awesome video.

VRF, the future of HVAC, paired with an ERV. Game over. And my sheet metal union is confused about why I wanted to switch to a service tech. Here in Seattle, sheet metal and hvac service are in the same union but separate

Thank for your video sir

Great video and a great teacher.
Can you descripe the controll of the compressor a little bit more in detail? You said, that the speed of the compressor depends on the active units. So, is there a related speed for every amount of active units? Or is the compressor controlled by the suction pressure?

Excellent, simple explanation. I love it. Thank you so much for effort.

Wonderfully clear lecture. I have learnt very much. You are a great lecturer. Thank you.

Thank you for another good one.

Questions:
Why do we have these?
Where are they installed,commercial or residential, and why?
If residential, are they replacing "plain old" split systems?