Being in heavy commercial and industrial...its nice to see some content thats directly related to my day to day experiences. All information is valuable information...its even more nuce when its right up alley. I know you especially have extensive experience with Daikin. I just purchased the LGMV wifi module to interface with them. Thanks for putting this video out there Roman *** MITSUBISHI HEAT RECOVERY.....YOU WILL SEE A DRAIN LINE COMING OFF THE BRANCH BOX ***
I originally trained on the seven lights. I still speak binary. I fixed a lot of botched installs back when reflok was still the preferred method for Daikin, (glad that went away). I spent more than half my life on earth with a system in mode 21. Read the fantastic manual!
Excellent talk 🙏 Roman is very good at explaining and it gives a lot of confidence to listen to him talk about these systems. You can tell he has a lot of knowledge. 👍
Super awesome skim through the VRF/VRV world. Also really cool how Daikin does auto-addressing I mostly work with Mitsubishi, addressing is a pain… especially how they sometimes switch the dial… first digit/second digit left/right but sometimes right/left… haha!
THANKS HVAC school team Im a HVAC technician i learnt a lot from this channel.this is what I was expecting from you desperately.eventually its there thanks a lot fr that.i hope n wish u upload more videos on VRF commissioning and maintenance
I have really enjoyed this video very very good information here I am going to continue watching them I learned a lot but just taking this video a few times and writing stuff down questions that I've had thank you again
Thanks for all this effort mr, I'm abdulmjed from Syria and trying to learn about this system could you please guide me to the next step cause here In Syria we don’t have that sources and I can't afford paid courses and thanks a million again with all love.
Why are liquid line dryers not required with these types of systems? Mini splits, etc. If the line sets have been open to atmosphere, despite being vacuumed, there’s zero concern with moisture?
These types of systems are dependent on refrigerant flow. Filter driers cause too much of a restriction on that variable flow discussed. This is why best installation practices are so critical on VRV/F.
Sorry, but im not a fan...as soon as we set foot on two new accounts we found a large multi unit vrf system that has a refrigerant leak within a massive bundle of refrigerant lines all grouped together in a large tube type enclosure, and none of the circuits are marked as to which units they connect. They are also completely covered with insulation. The other account has a twin compressor system in the condenser, one compressor being a variable speed unit. We learned that multiple compressors have been replaced along with the speed control boards. We were told they should be replaced as a set.We have yet to investigate what the cause of failure is. We also learned that the 2nd stage compressor will not run at all if the 1st stage seizes up or becomes inoperable for any reason. We also had a system that was acting up from the communication wire picking up electrical noise. These units seem to work well for a few years, but when they misbehave, they are the worst. Some of our older acounts have these units that blow up power supply boards and refuse to start if the condenser fan motor fails but shows no fault. I found out by coincidence by giving the fan a spin and the unit started right up. The last thing I will mention is that many customers run these at low speed for long periods so the evaps load up with mildew, even with pan tabs, and then they need to be nearly completely disassembled because the long plastic blower wheel fills up with dirt and mold and goes out of balance. Imagine trying to take one of these apart in someones beautifully decorated office with fancy carpet.
It sounds like someone didn't install it right and people in the building didn't treat the system with proper respect and care it should have. These systems are the future, because efficiency is what the powers that be are chasing as the standard for HVAC systems. Especially as mini split and heat pump technology grows and eventually replaces old heating and cooling systems along with eliminating ductwork in homes etc. These systems will continue to get integrated into commercial and residential spaces.
I disagree. I have seen many vrv/f systems that have the same issues you are describing and they are all a result of the same issue. Poor installation. Daikin is very particular on a few things, but if you have a team installing these correctly and abiding by the start up procedure they will last for years. Don’t give up on them, just educate yourself. And as for the dirtiness of the fan coil, that’s on the customer. But if they’re maintained by a professional and they educate the homeowner/property management on the issue then this isn’t a problem.
Mostly it's bad install practices. I have ZERO experience on VFR and just trying to learn how it works as I am not willing to work on that. Honestly, HVAC has SO many fucking systems to learn that is impossible to be expert in every single system. It's not bad to have a greater idea on what's what thought.
Great video!! I love the VRF concept. I think that I'll choose that niche for my career. Do you have a link for those manufacturers' discount catalogs? I want to spec my house with vrf. Thank you very much!
Is complexity and cost the only reason we haven't moved toward whole-building heat pump systems that include the fridge, freezer, hot water, pool, oven, dryer, etc? For residential uses I expect it's just expensive to build and maintain, but half the large appliances in the home (and business) have a need to move heat into or out of something. Aside from cost, does it have to do with the operating temperatures, then? The operating parameters for a system designed to heat water to 150F from ambient couldn't efficiently be used to cool a freezer to 0F?
Low static aren’t useless. We use them in high end hotel rooms in manhattan, just no ductwork. It’s basically the unit straight to the supply drill on the other side of the wall
On flaring I use a double flare just like they use in hydraulic lines with nylog and a torque wrench because of the high pressures they use those in brake lines
Hello sir..im from Malysia...i want to know...did we need to install a starter for this system..please sir help me..or did this system dont need a starter like AHU/CHILLING SYSTEM
I have a question in my work place we have more than 68 VRV units,but issue notice when one of fan coil unit have fault or OFF all other units on same VRV stop working,i ask installer about this issue and he said its design as it is Is any solution available Thanks
9:18 - It seems there is only one flaw in this presentation (even though this presenter will go down as one of the best in the industry): it’s supposed to be, “Who’s on First; What’s on Second; I-Don’t-Know’s on Third!” Just sayin’ . . .
Cool stuff and great opportunity for techs to improve their skills but lowest bidder is going to win an overwhelming majority of these jobs and give it a bad name the more popular these installations get. Can you afford the opportunity cost to have your A+ techs spend countless hours on someone else’s train wreck in the middle of summer when there’s plenty of easier money to get. Also, these will be commercial accounts with 30-60-90 day pay terms if you ever get paid
Much needed class. Thanks
Roman, You are incredible. We need videos of you going through checker data of good systems and bad systems
Roman is amazing I love the way he explains things!..Please post the service and troubleshoot from him!
Being in heavy commercial and industrial...its nice to see some content thats directly related to my day to day experiences. All information is valuable information...its even more nuce when its right up alley. I know you especially have extensive experience with Daikin. I just purchased the LGMV wifi module to interface with them. Thanks for putting this video out there Roman
*** MITSUBISHI HEAT RECOVERY.....YOU WILL SEE A DRAIN LINE COMING OFF THE BRANCH BOX ***
I originally trained on the seven lights. I still speak binary. I fixed a lot of botched installs back when reflok was still the preferred method for Daikin, (glad that went away). I spent more than half my life on earth with a system in mode 21. Read the fantastic manual!
Excellent talk 🙏 Roman is very good at explaining and it gives a lot of confidence to listen to him talk about these systems. You can tell he has a lot of knowledge. 👍
Daikin high static MQ and OA units are braze and bolt/gasket type. Not flared. Great video as usual Roman
This is Gold! Thanks for posting it. Learning every day😊
He's a very good communicator and breaks things down into simple concepts!
Super awesome skim through the VRF/VRV world. Also really cool how Daikin does auto-addressing I mostly work with Mitsubishi, addressing is a pain… especially how they sometimes switch the dial… first digit/second digit left/right but sometimes right/left… haha!
Please up load the rest of this lesson with roman ASAP. The man is the GOAT
Great presentation. You brought out so many useful points.
Mr Baugh, thanks a lot for your video!
Good day Bryan, Roman Baugh gave a super great class👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍. We need mor of these. Thank you Bryan.
Hope to see the next class of this 🤞
Excellent. Thank you Roman!
thank you
THANKS HVAC school team
Im a HVAC technician i learnt a lot from this channel.this is what I was expecting from you desperately.eventually its there thanks a lot fr that.i hope n wish u upload more videos on VRF commissioning and maintenance
Thank you sir. super information
Great seeing some new material
Great lesson. Regards from Brazil
I have learned so much. Thanks!
Australia here i appreciate these ..Much love .
I have really enjoyed this video very very good information here I am going to continue watching them I learned a lot but just taking this video a few times and writing stuff down questions that I've had thank you again
Just started my journey in HVAC. I been doing Industrial Automation for 8 years now. Hopefully this goes well, looking forward to learning this.
Thank you very much, you’re amazing
Beautiful Lesson, Roman!
Man this was great! Learned a ton!
Good information. Thank you.
Very informative video thanks
Thanks for all this effort mr, I'm abdulmjed from Syria and trying to learn about this system could you please guide me to the next step cause here In Syria we don’t have that sources and I can't afford paid courses and thanks a million again with all love.
Why are liquid line dryers not required with these types of systems? Mini splits, etc. If the line sets have been open to atmosphere, despite being vacuumed, there’s zero concern with moisture?
These types of systems are dependent on refrigerant flow. Filter driers cause too much of a restriction on that variable flow discussed. This is why best installation practices are so critical on VRV/F.
Makes perfect sense. Thank you
Very informative sessions
Excellent info thank you for your time
Sorry, but im not a fan...as soon as we set foot on two new accounts we found a large multi unit vrf system that has a refrigerant leak within a massive bundle of refrigerant lines all grouped together in a large tube type enclosure, and none of the circuits are marked as to which units they connect. They are also completely covered with insulation. The other account has a twin compressor system in the condenser, one compressor being a variable speed unit. We learned that multiple compressors have been replaced along with the speed control boards. We were told they should be replaced as a set.We have yet to investigate what the cause of failure is. We also learned that the 2nd stage compressor will not run at all if the 1st stage seizes up or becomes inoperable for any reason. We also had a system that was acting up from the communication wire picking up electrical noise. These units seem to work well for a few years, but when they misbehave, they are the worst. Some of our older acounts have these units that blow up power supply boards and refuse to start if the condenser fan motor fails but shows no fault. I found out by coincidence by giving the fan a spin and the unit started right up. The last thing I will mention is that many customers run these at low speed for long periods so the evaps load up with mildew, even with pan tabs, and then they need to be nearly completely disassembled because the long plastic blower wheel fills up with dirt and mold and goes out of balance. Imagine trying to take one of these apart in someones beautifully decorated office with fancy carpet.
It sounds like someone didn't install it right and people in the building didn't treat the system with proper respect and care it should have.
These systems are the future, because efficiency is what the powers that be are chasing as the standard for HVAC systems.
Especially as mini split and heat pump technology grows and eventually replaces old heating and cooling systems along with eliminating ductwork in homes etc.
These systems will continue to get integrated into commercial and residential spaces.
Let me guess, it's an LG
I disagree. I have seen many vrv/f systems that have the same issues you are describing and they are all a result of the same issue. Poor installation. Daikin is very particular on a few things, but if you have a team installing these correctly and abiding by the start up procedure they will last for years. Don’t give up on them, just educate yourself.
And as for the dirtiness of the fan coil, that’s on the customer. But if they’re maintained by a professional and they educate the homeowner/property management on the issue then this isn’t a problem.
Mostly it's bad install practices. I have ZERO experience on VFR and just trying to learn how it works as I am not willing to work on that. Honestly, HVAC has SO many fucking systems to learn that is impossible to be expert in every single system. It's not bad to have a greater idea on what's what thought.
Freaking awesome, I knew nothing about this except for an introduction Mitsubishi class I took that was spread way to thin over two days.
Thank you
Great info, well preesented
Appreciated!
Great info !
Dude when did you start working for kalos????
Hey, I started working at Kalos 9 months ago!
Great video!! I love the VRF concept. I think that I'll choose that niche for my career. Do you have a link for those manufacturers' discount catalogs? I want to spec my house with vrf. Thank you very much!
Phenomenal
Is complexity and cost the only reason we haven't moved toward whole-building heat pump systems that include the fridge, freezer, hot water, pool, oven, dryer, etc? For residential uses I expect it's just expensive to build and maintain, but half the large appliances in the home (and business) have a need to move heat into or out of something.
Aside from cost, does it have to do with the operating temperatures, then? The operating parameters for a system designed to heat water to 150F from ambient couldn't efficiently be used to cool a freezer to 0F?
where can i find more of his classes? Would really appreciate getting the chance to learn more from Mr Baugh
Really appreciate it ..
Low static aren’t useless. We use them in high end hotel rooms in manhattan, just no ductwork. It’s basically the unit straight to the supply drill on the other side of the wall
On flaring I use a double flare just like they use in hydraulic lines with nylog and a torque wrench because of the high pressures they use those in brake lines
Did we need refrigerant leak detection system if more than 40 VRV units indoor in one area
Very Good Sir, please explain of other manufacturer like LG, Samsung, Toshiba, Hiatchi, Mitsubishi specially in terms Heat Recovery system .
Hello sir..im from Malysia...i want to know...did we need to install a starter for this system..please sir help me..or did this system dont need a starter like AHU/CHILLING SYSTEM
great video
Fanastic. Thank you. raphael nyc
So I have a question Why does these units don't work well in the Midwest part of the U.S.A. due to the temperature drops to -10 below or -20 below .?
Put our oil separator in the system for security purpose. It will reduce the warranty expense long-term for the manufacturer
Can you please send me the flash drive for some of the information the individual was talking about
I have a question in my work place we have more than 68 VRV units,but issue notice when one of fan coil unit have fault or OFF all other units on same VRV stop working,i ask installer about this issue and he said its design as it is
Is any solution available
Thanks
No this is normal
These guys know what there talking about pay attention
🔥🔥🔥
9:18 - It seems there is only one flaw in this presentation (even though this presenter will go down as one of the best in the industry): it’s supposed to be, “Who’s on First; What’s on Second; I-Don’t-Know’s on Third!” Just sayin’ . . .
Nice information knowledge please inform hvac technician online course available details
❤
Oil separator oil separator oil separator right on the discharge of the compressor or separator just like what they use in low temperature system
Clark Christopher Garcia Shirley Thompson Thomas
Miller Jose Wilson Ronald Allen Laura
Cool stuff and great opportunity for techs to improve their skills but lowest bidder is going to win an overwhelming majority of these jobs and give it a bad name the more popular these installations get. Can you afford the opportunity cost to have your A+ techs spend countless hours on someone else’s train wreck in the middle of summer when there’s plenty of easier money to get. Also, these will be commercial accounts with 30-60-90 day pay terms if you ever get paid
call it OCC. overcomplicated crap
I think it’s useful
Moore Scott Williams Brian Wilson Angela
Variable refrigerant volume units and variable refrigerant flow units are junk
u probably don't know how to use it or design it properly. it has its own unique application.
not every system is perfect.
Thompson Elizabeth Wilson Gary Smith Anthony
Lewis Donna Taylor John Lopez Amy
Harris James Wilson Laura Perez Dorothy
Jackson Edward White Ruth White Dorothy
LG sucks
Martin Michelle White Shirley Wilson Sarah