Thank you! We do keep a very clean chiller plant and pride ourselves on keeping a building running in tip-top shape. It is not easy but we keep going around and around and around!
Paul, thanks so much for your video, it will help me a lot to understand the concepts you mentioned along the video having the plan, the PID diagram for full comprehension, I am not well versed on chillers but I am doing my best. I will appreciate your support.
thanks for the great video.. ive recently moved from a company that deal with more commercial refrigeration such as packs and condensing units to a company that look after AHUs and Water chillers and such so this video was a great help thanks
Almost the same layout as my plant but we use three York chillers screw type and our towers are further away and elevated. We also have the plate and air compressor.
Thank you for joining us and your comments and question. Usually the lift is solid; sometimes on colder days before we turn over to the economizer, the lift can vary a bit. Generally, the chillers are very solid and reliable. It is a crossflow tower.
That's very odd that you're using pneumatic actuator, so you need an air compressor for air supply. These Daikings chillers use R-134a refrigerant. Now I have a question, is this plant a load based system or a flow based? Are your AHU'S VALVE TWO WAY OR A THREE WAY VALVE SYSTEM? IF THE VALVES ON THE AHU'S THREE WAY IS A FLOW BASED SYSTEM. IF ITS A 2 WAY VALVE THEN ITS A LOAD BASED SYSTEM.
Hello. Thank you for your comments and questions. Yes, this plant does use pneumatic actuators and a very large multi-stage air compressors. The air is used in other applications in the facility. The building is very high and even with extensive lightning protection, we had terrible time with lightning strikes and surges. Many electronic devices in the plant are affected. We have found electronic actuators slightly fussy and unreliable. In over twenty years, even after retrofit, we have only had to rebuild two actuators. Very reliable. The system is load-based. It uses 2-way CW valves at the AHU's. Thank you again for your interest and joining us on the channel.
Thank you sir for your brief explanation the place where i work is its HVAC is functional but its system is very old i really wanna know about how new one are and this video showed me about new stuff related to HVAC :) i would be more glad to know how these chillers make chilled water as the place where i work it have lithium bromide absorption chiller i think the chillers u have works different thn the one i have seen, am i right?
Is this chiller facility a 14-18°F Delta T plant? What's your current COP? and how much kW/ton does it consume. Also what's the EER? I imagine you have either an airside or waterside economizer
Thank you for joining and for your comments and questions. You are close on the Delta T. Maybe 15 to 20 degrees is closer. Yes, we have a waterside economizer. I am not privy to any costs or electrical bills so I cannot comment on that with any accuracy. The building owners have commented that the electrical costs are much reduced (obviously) over the old chillers.
You said condensing pumps take water from condenser and pressure it to the cooling tower and this is wrong .. The condensing pump pressure cold water from cooling tower to condenser and it is found in return side from cooling tower to make sure there is always enough flow of water to absorb heat from hot gas refrigerant
Yes the electric actuators fail all the time. Those pneumatic valves are hard to beat as far as reliability and longevity. Looks like a nice facility. I'm always stuck working in shitholes with lack of maintenance. Those chillers say daikin mccquay, I hope they are better quality than these new daikin units that Goodman was putting out.
Thank you for your joining us and your question. I will need to pay more attention, but I would say you are very close at 4-6 degrees F. Perhaps, 3 to 5 F might be closer. I will say that the old R-11 Trane units, were capable of colder chilled water than these newer units are. It is not really noticeable in the building climate control or performance.
The HX plates, are they copper or SS ? The open loop will eat thru the thin cooper plate very fast.... they need the put a blanket on the HX and some sections of the open lOOp connecting to the HX .
Derek Conner I have serviced /repaired them all and I must say York is by far the worst. They are quality , however their software is not user friendly and plagued with bugs. We've also had several issues with poor connections causing weird alarms that will come and go at their own will. Trane is by far the best platform. I do speak of equipment thats down in Florida. The high levels of humidity may come into play with my opinions on these machines. I don't know how yorks do up north.
Luigi Luigini Hmmmm that is interesting considering I have never had any of those particular issues with any York, water cooled or air cooled. I'm not biased, but I am master factory trained by York and know most issues that they bring a customer. I'm interested in the bugs, and connection issues. Are we talking about old York machines or newer? Huge difference between them.
Derek Conner Yes 15 + yr old YCAV Air cooled screw chillers. I may have exaggerated a bit but the York's are definitely the least user friendly for someone who is not specifically trained for York's.
im going to correct you on a couple of misleading things in the video :) first of all its not important but the old refrigirant that you called r11 is achually called r12. and the newer gas that the new plant is using (r134a) is not toxic but it deprives oxygen in the room if there is a big leak so you will suffocate without even knowing that there is no breatable air in the room and possably die. that is why there is a saftey system in place. not saying this to be a smartass but i like pople to learn correct information. :)
Thank you for your interest in our video. I am going to have to say that while we appreciate your input, you are incorrect. The machines removed from this chiller plant were indeed 450 ton Trane R-11 machines. R-11 was used in old chillers frequently, and while it was a very good refrigerant, it was a ozone killer. Chillers of this type are low pressure appliances and R-11 was used. R-12 is primarily used in other appliances and applications. As far as toxic properties for 134a, a discharge in this plant of this amount of refrigerant would not be a good event. There is occupied office space below the plant. If there was a fire present, the 134a turns into a bad scene. Displacement of oxygen is toxic enough for me! Why take a chance? Treat all chemicals with care, read the safety sheet and limit exposures.
R-11 is a thing. If the man says he had it, we must believe him. However, the distinction that you make regarding the word toxic is significant. A toxic gas and an asphyxiant gas are thoroughly different, and the terms should not be used interchangeably, as they are responded to in completely different ways. These Magnitude 400D chillers should be charged with approximately 1240lbs of 134a each. Were one to rupture, it would dilute the oxygen (not necessarily displace, like argon) in that space greatly, posing a health risk. However, a toxic release would warrant a shutdown of air moving equipment to restrict its coverage, whereas an asphyxiant release would warrant the introduction of forced outside air. In any case, tell the chief he has a nice setup.
you need to send this video out to every one to show them how a chiller plant should look CLEAN great job
Thank you! We do keep a very clean chiller plant and pride ourselves on keeping a building running in tip-top shape. It is not easy but we keep going around and around and around!
Paul, thanks so much for your video, it will help me a lot to understand the concepts you mentioned along the video having the plan, the PID diagram for full comprehension, I am not well versed on chillers but I am doing my best. I will appreciate your support.
You are welcome. Thank you for stopping by and taking the time to comment. Much appreciated.
This is the best description I have seen so far with the real infrastructure and machinery running. Thank you very much my confusion now gone.
Thank You. You explained it all so much better than any of the guys I work with were willing too.
Good overview of how chiller plant works. This really helped me with a project.
John Smith p
thanks for the great video.. ive recently moved from a company that deal with more commercial refrigeration such as packs and condensing units to a company that look after AHUs and Water chillers and such so this video was a great help thanks
Thanks! Great explanation!
Thank you!
Good video Paul. keep sharing knowledge
very very important video of basic points
Thank you for the valuable video and explanation
Great walk thru.
Thank you
Great video thanks!
Paul is a good talker
Almost the same layout as my plant but we use three York chillers screw type and our towers are further away and elevated. We also have the plate and air compressor.
Awesome! Thank you for joining.
You should be getting a good Lift on with this chiller. Is your cooling tower a crossflow or counterflow type or evaporative tower.
Thank you for joining us and your comments and question. Usually the lift is solid; sometimes on colder days before we turn over to the economizer, the lift can vary a bit. Generally, the chillers are very solid and reliable. It is a crossflow tower.
nice video ! fyi start at 3 minutes for explanation of the chiller functions
Good explanation.
That's very odd that you're using pneumatic actuator, so you need an air compressor for air supply. These Daikings chillers use R-134a refrigerant. Now I have a question, is this plant a load based system or a flow based? Are your AHU'S VALVE TWO WAY OR A THREE WAY VALVE SYSTEM? IF THE VALVES ON THE AHU'S THREE WAY IS A FLOW BASED SYSTEM. IF ITS A 2 WAY VALVE THEN ITS A LOAD BASED SYSTEM.
Hello. Thank you for your comments and questions. Yes, this plant does use pneumatic actuators and a very large multi-stage air compressors. The air is used in other applications in the facility. The building is very high and even with extensive lightning protection, we had terrible time with lightning strikes and surges. Many electronic devices in the plant are affected. We have found electronic actuators slightly fussy and unreliable. In over twenty years, even after retrofit, we have only had to rebuild two actuators. Very reliable. The system is load-based. It uses 2-way CW valves at the AHU's. Thank you again for your interest and joining us on the channel.
Thank you sir for your brief explanation the place where i work is its HVAC is functional but its system is very old i really wanna know about how new one are and this video showed me about new stuff related to HVAC :) i would be more glad to know how these chillers make chilled water as the place where i work it have lithium bromide absorption chiller i think the chillers u have works different thn the one i have seen, am i right?
Good upload
❤️💛💚❤️💛💚
Thank you!
Great
Thank you
Holy Shit! Paul was my boss at minolta cameras
Ok you have a waterside economizer based on these plate and frame heat exchanger
Thank you for joining. Yes, you are correct.
Is this chiller facility a 14-18°F Delta T plant? What's your current COP? and how much kW/ton does it consume. Also what's the EER? I imagine you have either an airside or waterside economizer
Thank you for joining and for your comments and questions. You are close on the Delta T. Maybe 15 to 20 degrees is closer. Yes, we have a waterside economizer. I am not privy to any costs or electrical bills so I cannot comment on that with any accuracy. The building owners have commented that the electrical costs are much reduced (obviously) over the old chillers.
You said condensing pumps take water from condenser and pressure it to the cooling tower and this is wrong .. The condensing pump pressure cold water from cooling tower to condenser and it is found in return side from cooling tower to make sure there is always enough flow of water to absorb heat from hot gas refrigerant
it is the bast chillar ever
Yes the electric actuators fail all the time. Those pneumatic valves are hard to beat as far as reliability and longevity. Looks like a nice facility. I'm always stuck working in shitholes with lack of maintenance. Those chillers say daikin mccquay, I hope they are better quality than these new daikin units that Goodman was putting out.
Mr Paul what was evaporator your approach temperature on these chillers? 4-6°F approach
Thank you for your joining us and your question. I will need to pay more attention, but I would say you are very close at 4-6 degrees F. Perhaps, 3 to 5 F might be closer. I will say that the old R-11 Trane units, were capable of colder chilled water than these newer units are. It is not really noticeable in the building climate control or performance.
I tried calling your corporate headquarters in Atlanta Georgia but to no avail, I don't have your extension number. But Will continue to try
Thank you for joining. I am seldom in Atlanta. Please send us an email through the channel and I will try to assist.
What is primary and secondary chiller pumps motor?
video is good with explanation , which type of compressor??
Thank you. It is a Magnetic Bearing Centrifugal Chillers manufactured by Daikin Applied.
Nesecito trabajo
The HX plates, are they copper or SS ? The open loop will eat thru the thin cooper plate very fast.... they need the put a blanket on the HX and some sections of the open lOOp connecting to the HX .
Stainless steel plates. Thank you
Some York YMC2 chillers would have been a better choice :)
Cool video though!
-York Chiller Mechanic
Derek Conner
I have serviced /repaired them all and I must say York is by far the worst. They are quality , however their software is not user friendly and plagued with bugs. We've also had several issues with poor connections causing weird alarms that will come and go at their own will. Trane is by far the best platform. I do speak of equipment thats down in Florida. The high levels of humidity may come into play with my opinions on these machines. I don't know how yorks do up north.
Luigi Luigini
Hmmmm that is interesting considering I have never had any of those particular issues with any York, water cooled or air cooled. I'm not biased, but I am master factory trained by York and know most issues that they bring a customer. I'm interested in the bugs, and connection issues. Are we talking about old York machines or newer? Huge difference between them.
Derek Conner
Yes 15 + yr old YCAV Air cooled screw chillers. I may have exaggerated a bit but the York's are definitely the least user friendly for someone who is not specifically trained for York's.
Trane is what we use!
Ok
im going to correct you on a couple of misleading things in the video :) first of all its not important but the old refrigirant that you called r11 is achually called r12. and the newer gas that the new plant is using (r134a) is not toxic but it deprives oxygen in the room if there is a big leak so you will suffocate without even knowing that there is no breatable air in the room and possably die. that is why there is a saftey system in place. not saying this to be a smartass but i like pople to learn correct information. :)
Thank you for your interest in our video. I am going to have to say that while we appreciate your input, you are incorrect. The machines removed from this chiller plant were indeed 450 ton Trane R-11 machines. R-11 was used in old chillers frequently, and while it was a very good refrigerant, it was a ozone killer. Chillers of this type are low pressure appliances and R-11 was used. R-12 is primarily used in other appliances and applications. As far as toxic properties for 134a, a discharge in this plant of this amount of refrigerant would not be a good event. There is occupied office space below the plant. If there was a fire present, the 134a turns into a bad scene. Displacement of oxygen is toxic enough for me! Why take a chance? Treat all chemicals with care, read the safety sheet and limit exposures.
R-11 is a thing. If the man says he had it, we must believe him. However, the distinction that you make regarding the word toxic is significant. A toxic gas and an asphyxiant gas are thoroughly different, and the terms should not be used interchangeably, as they are responded to in completely different ways. These Magnitude 400D chillers should be charged with approximately 1240lbs of 134a each. Were one to rupture, it would dilute the oxygen (not necessarily displace, like argon) in that space greatly, posing a health risk. However, a toxic release would warrant a shutdown of air moving equipment to restrict its coverage, whereas an asphyxiant release would warrant the introduction of forced outside air.
In any case, tell the chief he has a nice setup.
EXO903
Jesse Smith m
I buy R11 all the time and it is very possible that it was R11.
any hiring
total salesman here. who left you left alone in there?? 😂
I tend to wander! Thank you!
My name is Gene Gonzalez and I welcome the opportunity to speak to you for any employment opportunity with your group
Thank you. Please send us an email through the channel and I will try to assist.
Hi Gene, please send me your email.
Still using pneumatic valves I see