@@TheChillerGuysHub I'm new to chiller, I don't have experience about chiller. I really like troubleshooting , fix, repair , install , replace parts was bad.
@@zekenzy6486 right on man, I am getting more training uploaded to the website soon, and there is some other literature and documents on there as well.
Pretty much the BAS should close the valves for the ahus every 10% per 10 minutes, then once the valves are closed, then we could shut everything off, right?
100%, you can close each valve as you wish, but as long as it doesn’t affect the chiller more than 10%, for example, if you had 100 valves at 100%, close 10 at a time, wait 10 min, then close another 10, etc. After all valves are closed, you can disable the chiller, wait another 5 min for everything to unload, and then you can shut the pumps off after that if you want. Doesn’t matter so much on startup, as long as the chiller has flow before it tries to start the comp.
Flow boils down to pressure differential. You will have flow through the line with the greatest differential. High to low, hot to cold....these are hard facts with fluid and thermodynamics. Temp/pressure differential= flow Closely spaced Tee's are also important so that the flow through the common pipe is minimized to what you need/want. I know there is manufacturer specific ratings....but I found a good "rule of thumb" is 3 GPM per ton
ASHRAE standard is 2.4 on evap, with 3 you’d be golden on pretty much everything as a base. I have seen them add bypass valves, because they usually put too small of a pump on the secondary lol is this common down there, or do you guys have better engineers lol?
@TheChillerGuys it's hit or miss. You get textbook...or someone who pencil whips it. Or if you're really lucky....someone who knows absolutely nothing about flow and has a "great idea"
@@jasonjohnsonHVAC yeah for sure, the typical, "I've been doing this for 97 years, I know everything" response is a classic one lol people are goofy sometimes.
Great explanation...the most field relatable explanation
Great video. Thank you for sharing
Absolutely brother, should I do more controls breakdowns like these?
@@TheChillerGuysHub . Yes. Please. Thank you
@@zekenzy6486 will do man! is there something specific, do should i break down a system that your curious about?
@@TheChillerGuysHub I'm new to chiller, I don't have experience about chiller. I really like troubleshooting , fix, repair , install , replace parts was bad.
@@zekenzy6486 right on man, I am getting more training uploaded to the website soon, and there is some other literature and documents on there as well.
Pretty much the BAS should close the valves for the ahus every 10% per 10 minutes, then once the valves are closed, then we could shut everything off, right?
100%, you can close each valve as you wish, but as long as it doesn’t affect the chiller more than 10%, for example, if you had 100 valves at 100%, close 10 at a time, wait 10 min, then close another 10, etc.
After all valves are closed, you can disable the chiller, wait another 5 min for everything to unload, and then you can shut the pumps off after that if you want.
Doesn’t matter so much on startup, as long as the chiller has flow before it tries to start the comp.
@ thank you
Flow boils down to pressure differential. You will have flow through the line with the greatest differential. High to low, hot to cold....these are hard facts with fluid and thermodynamics. Temp/pressure differential= flow
Closely spaced Tee's are also important so that the flow through the common pipe is minimized to what you need/want. I know there is manufacturer specific ratings....but I found a good "rule of thumb" is 3 GPM per ton
ASHRAE standard is 2.4 on evap, with 3 you’d be golden on pretty much everything as a base.
I have seen them add bypass valves, because they usually put too small of a pump on the secondary lol is this common down there, or do you guys have better engineers lol?
@TheChillerGuys it's hit or miss. You get textbook...or someone who pencil whips it. Or if you're really lucky....someone who knows absolutely nothing about flow and has a "great idea"
@@jasonjohnsonHVAC yeah for sure, the typical, "I've been doing this for 97 years, I know everything" response is a classic one lol people are goofy sometimes.