Man, put this guys smarts into Bert’s entertainment value and you’d have the perfect instructor. I appreciate the video and I’m very interested in learning more about VRF. Thank you HVAC School. 👍
Every time I watch one of your videos, I learn a lot of new things. Thanks for sharing the knowledge with us. Greetings from Salamanca, Guanajuato, Mexico.
Great video. Thank you HVAC School for this training. I am new to VRF systems and I'm trying to learn how to troubleshoot them. You have so many great videos on traditional HVAC systems and I'm hoping there will eventually be more videos on VRF systems. We work at a large resort where some of buildings are equipped with Samsung VRF systems and we know very little when it comes to figuring out the problem. The manufacturer's provide very little online training. Thanks again for all you do.
Great presentation! I am, however, curious why at 1:05:00, it was implied that using a VRF and/or ductless system in a computer room would be inadvisable? Wouldn't the same energy efficiency, humidity control, and temperature control benefits still apply to a computer room?
Typically, designers or building owners select an inverter driven variable capacity system to save on energy usage. In the case of a IT room, the loads are generally constant year round. There is no load shedding or part-load scenarios to take advantage. In reality, server rooms grow and increase loads. Also, although humidity control is a concern, it is typically not an issue with high humidity but low humidity. IMO, it is better to select a fixed capacity system. This topic deserves more time and attention. Contact me if you are interested in discussing it further. Cheers!
@@hvacmensch @hvacmensch6220 Great points, thanks for explaining! However, in most climates, the cooling load will still vary quite a bit depending on the outside temperature and sunlight. Obviously there are a ton of variables such as the climate, insulation, sun exposure, etc, but the heat load at, for example, a 60 degree ambient in the middle of the night (or potentially much lower if the AC is used all year instead of fresh air) is going to be significantly different than with a 110 degree ambient and the sun shining on the building. Of course the difference won't be nearly as drastic as in a normal comfort cooling application since the heat gain through the walls and ceiling will be a much lower percentage of the total heat load, but I'd think the overall difference in load would still be significant. Also, if higher efficiency computer equipment is installed in the future or equipment is removed (lower heat load) or, as you said, equipment is added to meet increasing demands and the heat load increases, a properly sized VRF system will be MUCH more adaptable and won't be nearly as likely to suffer penalties from undersizing or oversizing.
This is really thorough - thank you for posting. Some of this I knew, but it's great to see it all stitched together like this. A great explanation for a homeowner like me.
I would love to see the TEWI number for a VRF against a Water system. VRFs use huge amounts of refrigerant when compared to a water CH, HP or 4P. The greenhouse effect sent you a hug! :(
It's kinda funny that he says at the end leave your gauges in the truck when im currently using gauges on a Daikin VRV to make sure the pressure transducers are working properly.
It seems that a shorted compressor takes out an indoor coil due to acid contamination, causing a preference for system replacement. That seem untenable for VRF, so what's the solution? Replaceable core filters, a different flushing system or what?
These systems sound like very versatile. I have questions though. Weren’t there restrictions about how much refrigerant can be circulated through a building, due to the breakdown of the refrigerant into toxic gasses, if the building catches fire. If a compressor has a running burnout, I guess it would make every head connected to this outdoor unit inoperable. How would one clean up a contaminated system, with all the delicate components? Seems like it would be a service nightmare. What about oil return? Seems like the compressor could run short of oil with all the piping. Is there a separate oil reservoir, which maintains a specific oil level, until enough oil can be returned through the piping? I guess a brazed system would have to be very clean install. I heard some of these systems use aluminum piping with shoulderless connectors. These seem like they will be the systems of the future. I am concerned about the amount of components, scattered all over the place. I think I would prefer all of the refrigerant and controls located in one package chiller I’m not knocking these systems. My guess is the installation has to be a very clean, and the installation installation quality would determine the reliability of these systems. Is there a separate ventilation system required for fresh air? Seems like it would have to be supplied from an outside source, which is critical for indoor air quality. This would require a fan, ductwork, etc. usually outdoor air has to be conditioned, as to not add to the heat load of the building. Then there is the problem of maintaining building static pressure requirements. Seems like separate makeup air units, with the ability to supply conditioned outdoor ventilation air would be required, adding to the cost.
I installed a VRF 8hp ac controlling 3 indoor unit but it always show me p02 and trips of the compressor and later shows p13 so I am confused right now pls what can I do
Hi, what is the brand and model of the white HVAC mechanical thermostat in the background of the Amber and Depp Trial? You can see it when Amber or Depp are talking. Thanks for your help.
Is This system only designed for the West Coast or Hot Weather cause many of these systems don't perform well in the Mid west. Where I live and often one must add a heat pump to this system to get Max performance
Your a parts changer.. What did you want the guy to do come dressed as a clown and dance.. this info should cost you thousands in some tech inst. if they went over it at all
Man, put this guys smarts into Bert’s entertainment value and you’d have the perfect instructor. I appreciate the video and I’m very interested in learning more about VRF. Thank you HVAC School. 👍
VRF has so many configurations... the interface control with technology like iOS and Android is amazing
Every time I watch one of your videos, I learn a lot of new things. Thanks for sharing the knowledge with us. Greetings from Salamanca, Guanajuato, Mexico.
Thank you for the video.
Well done Mr mike pipe. When will you going to open a branch in Maryland? I will love to apply.
Feeling bittersweet about the future but, well put! Thank you Hvac school!
Great video. Thank you HVAC School for this training. I am new to VRF systems and I'm trying to learn how to troubleshoot them. You have so many great videos on traditional HVAC systems and I'm hoping there will eventually be more videos on VRF systems. We work at a large resort where some of buildings are equipped with Samsung VRF systems and we know very little when it comes to figuring out the problem. The manufacturer's provide very little online training. Thanks again for all you do.
Insightful and very educational
Great video, I loved the ending...leave those gauges in the truck.
Great video, it gave me a better insight of VRF and preparing me to be a better tech. Thanks
Great presentation! I am, however, curious why at 1:05:00, it was implied that using a VRF and/or ductless system in a computer room would be inadvisable? Wouldn't the same energy efficiency, humidity control, and temperature control benefits still apply to a computer room?
Typically, designers or building owners select an inverter driven variable capacity system to save on energy usage. In the case of a IT room, the loads are generally constant year round. There is no load shedding or part-load scenarios to take advantage. In reality, server rooms grow and increase loads. Also, although humidity control is a concern, it is typically not an issue with high humidity but low humidity. IMO, it is better to select a fixed capacity system. This topic deserves more time and attention. Contact me if you are interested in discussing it further. Cheers!
@@hvacmensch @hvacmensch6220 Great points, thanks for explaining! However, in most climates, the cooling load will still vary quite a bit depending on the outside temperature and sunlight. Obviously there are a ton of variables such as the climate, insulation, sun exposure, etc, but the heat load at, for example, a 60 degree ambient in the middle of the night (or potentially much lower if the AC is used all year instead of fresh air) is going to be significantly different than with a 110 degree ambient and the sun shining on the building.
Of course the difference won't be nearly as drastic as in a normal comfort cooling application since the heat gain through the walls and ceiling will be a much lower percentage of the total heat load, but I'd think the overall difference in load would still be significant.
Also, if higher efficiency computer equipment is installed in the future or equipment is removed (lower heat load) or, as you said, equipment is added to meet increasing demands and the heat load increases, a properly sized VRF system will be MUCH more adaptable and won't be nearly as likely to suffer penalties from undersizing or oversizing.
This a good subject to go in Depth mr. Been waiting for some like this.
This is really thorough - thank you for posting. Some of this I knew, but it's great to see it all stitched together like this. A great explanation for a homeowner like me.
Hey MR TOM......... YOU ARE LIKE OMNIPRESENT ON ALL THOSE HVAC TALKS
I would love to see the TEWI number for a VRF against a Water system. VRFs use huge amounts of refrigerant when compared to a water CH, HP or 4P. The greenhouse effect sent you a hug! :(
It's kinda funny that he says at the end leave your gauges in the truck when im currently using gauges on a Daikin VRV to make sure the pressure transducers are working properly.
I think he meant that initial troubleshooting should be by using the computer service tool.
@@jonsnow5943 I'm being pedantic lol
It seems that a shorted compressor takes out an indoor coil due to acid contamination, causing a preference for system replacement. That seem untenable for VRF, so what's the solution? Replaceable core filters, a different flushing system or what?
1.25x speed with this guy
🙏🏿
Not even watched it yet, but I'll go ahead and say it... Great video, as always!
These systems sound like very versatile. I have questions though. Weren’t there restrictions about how much refrigerant can be circulated through a building, due to the breakdown of the refrigerant into toxic gasses, if the building catches fire. If a compressor has a running burnout, I guess it would make every head connected to this outdoor unit inoperable. How would one clean up a contaminated system, with all the delicate components? Seems like it would be a service nightmare. What about oil return? Seems like the compressor could run short of oil with all the piping. Is there a separate oil reservoir, which maintains a specific oil level, until enough oil can be returned through the piping?
I guess a brazed system would have to be very clean install. I heard some of these systems use aluminum piping with shoulderless connectors. These seem like they will be the systems of the future. I am concerned about the amount of components, scattered all over the place. I think I would prefer all of the refrigerant and controls located in one package chiller
I’m not knocking these systems. My guess is the installation has to be a very clean, and the installation installation quality would determine the reliability of these systems. Is there a separate ventilation system required for fresh air? Seems like it would have to be supplied from an outside source, which is critical for indoor air quality. This would require a fan, ductwork, etc. usually outdoor air has to be conditioned, as to not add to the heat load of the building. Then there is the problem of maintaining building static pressure requirements. Seems like separate makeup air units, with the ability to supply conditioned outdoor ventilation air would be required, adding to the cost.
All of your questions can be addressed by contacting the speaker.
Yeah Brother! Speak the TRUTH
Great video, thank you
Great info but the audio man. Truck on the highway I can’t hear !
I installed a VRF 8hp ac controlling 3 indoor unit but it always show me p02 and trips of the compressor and later shows p13 so I am confused right now pls what can I do
Need a hands on vid
Hi, what is the brand and model of the white HVAC mechanical thermostat in the background of the Amber and Depp Trial? You can see it when Amber or Depp are talking. Thanks for your help.
Good video and I like Arabic caption thanks
Is This system only designed for the West Coast or Hot Weather cause many of these systems don't perform well in the Mid west. Where I live and often one must add a heat pump to this system to get Max performance
Me saludas a Juan Chavez
All about diversity bro
Gave up watching after 10min😢😮
That's okay. It will be here when you are ready. Take care.
Your a parts changer..
What did you want the guy to do come dressed as a clown and dance.. this info should cost you thousands in some tech inst. if they went over it at all
my brother in Christ, you need to reatore your attention span, youre cooked
This is the most annoying video ever heavy on speech and boring, it makes me fall a sleep 😢