Hi, Does this system use refrigerant ?like R-410A?or does it only use the chilled water as the mean to cool? if it's does use refrigerant , what would be the significance of it in this system? Thank you. - Dan
Hi Jason, thanks for all the videos and sharing your knowledge. Do you have any on ADS/ADX server back up and upgrade. Also how to get your system on the internet? Thanks!
+Jarmen Kell I am assuming that you are talking about a system that has more than one chiller? It really depends on your system configuration. We have a system with a decoupler loop that actually uses the flow through the loop to stage up a second chiller. The more chilled water the air handlers call for the more the flow goes negative in the decoupler loop. Once it reaches a certain level, it will bring up the second chiller. I hope this helps but there is a lot of things that the information from the decouler loop can be used to control. This is just one example.
+System Control Tech Yes indeed it helps me a lot thank you so much. Yes you are right this is multiple chillers, using primary-secondary. Could you suggest some references books/websites related to this topic? Thanks.
+Jarmen Kell Unfortunately I do not know of any references for this type of control sequence. What I've learned about it has been hands on experience. There is a range of operation that will trigger the second chiller depending on the range settings. It is probably buried in the programming on the controller. As the valves on the air handlers open further the secondary chilled water pump ramps up to compensate. This causes a negative flow in the decoupler loop and once the flow goes negative enough, the second chiller is brought online. Good luck.
I will see about doing a video on that in the future. I assume you are talking about controlling the system secondary pumps by using the delta temperature?
+Delroy Dennis that's never a good thing but the logic would return to a single chiller and the staging process would begin again. If one chiller faulted the logic should start the other.
😟😕😤😞Metro Center Mall Shopping Center Issues during the Vans Indoor Skate Park Construction year 2000 through 2002 I wasn't ! pimping Bernadette at Learner NYC, Things going on behind my back.
Could you please provide a video explaining how Metasys controls chillers, primary pumps, secondary pumps, valve actuators etc. sequence of operations in auto mode. Thank you.
Great video content. I would like to know if you could share say the temperature readings and pump pressures of the chws, chwr of both the condenser and cooler barrel as well as the normal psi pressure readings under normal conditions for the pumps. Thank you in advance.
+sulthan s There are many PID loops on an air handler. Here is a video where I show how to tune the static pressure loop. ua-cam.com/video/ZeWc4jynqEs/v-deo.html
+Frank James you have a water balance issue. Cut back the flow to the lower level devices until they just start to not cool effectively. There should be around a 10 degree drop through the coil of the unit. Measure the air temperature before the coil and then after the coil. Set the flow through each unit to where there is a 10 degree drop. That should allow more flow to the upper levels.
+Kyaw Zin Thant Chilled water systems such as the one described in the video will use a chiller to cool water that is then used to provide cold water to air handlers which provide air conditioning. The cold water is pumped through the chilled water coil on the air handler and cools the air that passes through it.
Thank you so much for all these videos sir!!
Reflecting on my Commercial Engineering Mindset in 2007 about the Metro Center Mall Shopping Center in year 2000, 2001!
+Cyrus Graham thanks for watching and please subscribe for more
Thank you very much. I wanted to know what is high head pressure and what causes a chiller to surge. Thanks again!
+NICKLE& DIMEz thanks for watching
Hi, Does this system use refrigerant ?like R-410A?or does it only use the chilled water as the mean to cool? if it's does use refrigerant , what would be the significance of it in this system? Thank you.
- Dan
The chiller itself does use refrigerant to cool the water. That water is then used to provide cooling in the air handlers.
Hi Jason, thanks for all the videos and sharing your knowledge. Do you have any on ADS/ADX server back up and upgrade. Also how to get your system on the internet? Thanks!
I currently don't have any videos on upgrading a server. Hopefully I can in the near future
Could you please tell me what are the purposes of "DECOUPLER FLOW SWICTH" and "FLOWMETER" in chiller system bypass line/pipe. Thank you.
+Jarmen Kell I am assuming that you are talking about a system that has more than one chiller? It really depends on your system configuration. We have a system with a decoupler loop that actually uses the flow through the loop to stage up a second chiller. The more chilled water the air handlers call for the more the flow goes negative in the decoupler loop. Once it reaches a certain level, it will bring up the second chiller. I hope this helps but there is a lot of things that the information from the decouler loop can be used to control. This is just one example.
+System Control Tech Yes indeed it helps me a lot thank you so much. Yes you are right this is multiple chillers, using primary-secondary. Could you suggest some references books/websites related to this topic? Thanks.
+Jarmen Kell Unfortunately I do not know of any references for this type of control sequence. What I've learned about it has been hands on experience. There is a range of operation that will trigger the second chiller depending on the range settings. It is probably buried in the programming on the controller. As the valves on the air handlers open further the secondary chilled water pump ramps up to compensate. This causes a negative flow in the decoupler loop and once the flow goes negative enough, the second chiller is brought online. Good luck.
+System Control Tech Thank you I really appreciate your help.
man, i had to restart this because his voice turned me into a zombie
You'll be ok
Great information
Thanks
hello sir thanks for the share video, sir ,any details regarding pressure and temperature
CHWR CHWS thank you
I will see about doing a video on that in the future. I assume you are talking about controlling the system secondary pumps by using the delta temperature?
thanks for your video
Any time.
GOOD EVNINV SIR SIR WHAT U WILL EXPLAN IN HINDI CERRER CENTER FUGEL CHILL WATER PLAN OPERAT SISTEM
what happen when system shut down from a power surge
+Delroy Dennis that's never a good thing but the logic would return to a single chiller and the staging process would begin again. If one chiller faulted the logic should start the other.
very informative
+Ngari Bodpa thanks for watching
Ngari Bodpa
manually how to start chiller pls explain?
albertjohn john
Water flow and hit the switch
i loved it
Thanks for watching
Sounds like a big geo thermal residental unit
There's more to them than that.
Chiller installations
Thanks for watching
good evening sir pin code display water chiller of blue star plz sir
What
😟😕😤😞Metro Center Mall Shopping Center Issues during the Vans Indoor Skate Park Construction year 2000 through 2002 I wasn't ! pimping Bernadette at Learner NYC, Things going on behind my back.
What
'Merica
Exactly
Eugene from walking dead.
Spot on
Different color hair.
good evening sir pin code display water chiller of blue star plz sir
What
Very thaks for this very helpfull training video.
Glad to help
Could you please provide a video explaining how Metasys controls chillers, primary pumps, secondary pumps, valve actuators etc. sequence of operations in auto mode. Thank you.
+Jarmen Kell I will be able to give you a summary but it will not cover any situation but would only cover the common things.
+System Control Tech Thank you..
+System Control Tech hi may I ask when you will post the video? Thank you..
It will probably be after we switch back into cooling mode later in the spring. It is too cold here to run chillers currently.
+System Control Tech thank you so much for your time and replies very much appreciated.
Great video content. I would like to know if you could share say the temperature readings and pump pressures of the chws, chwr of both the condenser and cooler barrel as well as the normal psi pressure readings under normal conditions for the pumps. Thank you in advance.
That varies between systems
could you please provide the video of tuning the PID of an AHU in metasys ....
+sulthan s There are many PID loops on an air handler. Here is a video where I show how to tune the static pressure loop. ua-cam.com/video/ZeWc4jynqEs/v-deo.html
Aziz & Company Ltd. YORK HVAC (By Johnson Controls) Fist Supply & Installation in Bangladesh of Sole Distributor, Business Terms in 70 Years.
Hvac Dakeean menynes job
Thanks for watching
In a condo if floors 8 and below are blowing cold air in the halls and the rest of the floors are ok what can be the problem ?
+Frank James you have a water balance issue. Cut back the flow to the lower level devices until they just start to not cool effectively. There should be around a 10 degree drop through the coil of the unit. Measure the air temperature before the coil and then after the coil. Set the flow through each unit to where there is a 10 degree drop. That should allow more flow to the upper levels.
Thank you sir
*****
don't think they have fall out bunkers either
Thank you for your videos.
Glad to help. More videos are coming.
+1st Year BAS TECH YUSEF glad to help
System Control Tech mmm
Does it maintain the set temperature only near the pipes or the entire room?
The temperature will increase the further through the system but keeps it close to setpoint as it enters the coils.
what is chilled water system?Please explain me
+Kyaw Zin Thant Chilled water systems such as the one described in the video will use a chiller to cool water that is then used to provide cold water to air handlers which provide air conditioning. The cold water is pumped through the chilled water coil on the air handler and cools the air that passes through it.
Nice video. thank you so much boss
Thanks for watching.
where can one go to chiller classes?
+Javier Perez most manufacturers offer them for their products
Tooopaaa haaaaiiiii
What
great effort God bless you
+Sam Bekhit thanks for watching
Hii
Hi