I've been struggling to understand how economizers work for a while now, and this is by far the most in-depth explanation i've seen. Thank you so much for your help.
@juanc5972 жыл бұрын
Fantastic , very good and profesional. Thank you sir
@TOOLMAN4hvac7 жыл бұрын
DAVID THIS IS ABSOLUTELY THE BEST ECONOMIZER TUTORIAL i HAVE EVER SEEN!! THANKS
@greggstrangways47522 ай бұрын
Absolutely the best video I've ever seen on economizer troubleshooting and even describing just how one works. Very nice job!
@davidharty36537 жыл бұрын
Thanks for all the kind comments ya'll, This is my way of paying back/ forward what my Friend and Mentor Jim Schaper (Now Retired) did for me when he selflessly shared his vast knowledge and experience with me .. Special Thanks to "Jedi Jim"
@gmguy156
6 жыл бұрын
David Harty Im shocked you dont have more subscribers
@e.j.griffin1758
6 жыл бұрын
David Harty Greatly appreciated, your economize videos has helped me a lot. Thank you.
@jiangbian76
5 жыл бұрын
Just have worked in field for 4 months. Learned the concept of Economizer from your excellent videos. Thank you very much.
@b3d3g697 жыл бұрын
WONDERFUL EXPLANATION!!!! Now I feel a little more confident working on these types of units.. Bravo!!
@gilbertmwansa69437 жыл бұрын
Hey David, I just want to appreciate the knowledge you have imparted to me. You are an excellent expert with extensive knowledge and a very good teacher who explains clearly. I now understand the Economizers, Thank you very much:)
@syndikatehvac6 жыл бұрын
Thanks dave. Nice diagram. Easier to understand than reading carrier literature.
@ask4george111 ай бұрын
When I was in the apprenticeship program, they never went over how that works. I was always so dam confused on how to troubleshoot that module. Now I finally know, thanks !
@davidharty3653
11 ай бұрын
You are welcome
@jeffersonwlafitte6 жыл бұрын
Best economizer training video out there! Wow!! From your kitchen, no less.
@orlandorizzo5780
5 жыл бұрын
And A Bag of Doritos!!! HAHAHHA
@mrlatnemis18495 жыл бұрын
I wish there were more videos like this! Very informative!!! Thank you for putting in the time to do these videos!! 🙏🏽
@albotiger72685 жыл бұрын
Excellent video my friend very easy to follow and understand! Cheers!
@theunit59397 жыл бұрын
David your videos are incredibly informative, your videos help me beyond believe, keep em coming man thanks again my friend.
@BurnabyCorey3 жыл бұрын
David, thank you kindly for the precise explanation of these economizer sequences. It’s the best explanation I’ve ever seen and it is much appreciated!
@jaymartin50954 ай бұрын
Fantastic explanation with visuals.
@mark.r89004 жыл бұрын
WOW!!! just an amazing tutorial. The best I've seen on youtube. Thank you so much.
@hvaclifewithalex40517 жыл бұрын
thank you very much, exelent job sharing your knowledge!
@nakiapringley53912 жыл бұрын
Great video brother 💯💯💯💯💯💯💯
@davidharty3653
2 жыл бұрын
Thank You, hope it helps
@davidwolff45902 жыл бұрын
This is a great video, I’ve come back to this video several times for a refresher while working on a economize.
@guardianmn4 жыл бұрын
Thanks for the video, David. Very educational indeed, sir more please and thank you
@jimcuster53186 жыл бұрын
Awesome video, Thank you very much for sharing your knowledge...
@rajg70372 жыл бұрын
This video is amazing and so helpful. I came back to it every time I have to look at one of these controllers. Thank you for taking the time to make this video and share your knowledge!
@davidharty3653
2 жыл бұрын
Your welcome, thamks for the kind words
@razzthokhee11897 жыл бұрын
Great Video,, very informal, thanks,,,
@lancerudy99345 жыл бұрын
Nice video ,keep them coming. Thanks
@mrgreen90863 жыл бұрын
Great video really appreciate the knowledge thank you
@Brian171775 жыл бұрын
This is an excellent training video thank you
@thoydouangvilay37838 жыл бұрын
Awesome awesome video!!!!! Thank you for your clear explanation! Awesome! Thank you!
@GabeDT5675 жыл бұрын
great video . I don't work on rooftops a lot . today i worked on a carrier 2 stage RTU with a carrier economizer control . 2nd stage was not coming on . this video explains what happened and why it did. i wish I could keep this videos in my learning records LOl. this is gold . thanks
@EyesofIllusion4 жыл бұрын
I been looking for a good tech to explain more better on economizer and you sir are number 1 when explaining. I now have a better understanding because of how you explained it. Thank you🙏
@thecurious67219 ай бұрын
Thank you for the great video 👍
@davidharty3653
8 ай бұрын
You’re welcome !!
@pincheburro9566 жыл бұрын
Just found your channel. Excellent information
@msantiago19765 жыл бұрын
Great teaching and explanation. I enjoyed watching your videos & have saved several for future referencing. Thanks for sharing your knowledge.
@xraybravo71803 жыл бұрын
Great work sir much appreciated it
@Pennconst1012 жыл бұрын
Great walk through! Thank you.
@maxmaxx2848 жыл бұрын
Hey David, thanks a lot for the video! Definitely not something you have to do but I am glad you put it up here. I am an apprentice myself and have worked with a few Mechanics now that would sometimes take the Y2 terminal off and tape it or put a marrett on it. I've spent a little bit of time playing with economizers to try and understand them and found that you did need the Y2 terminal. I didn't know however that the module actually communicates with Y2 and can still economize and use a compressor. So far I have been setting up a Time Delay on make with the unit to energize Y2 after Y1 has been energized for a few minutes. This might sound like a ridiculous step to take but it was all I knew haha. Anyways, thanks again for the video it was very helpful!
@orlylandy8 жыл бұрын
Excellent video to bad it took so long for me to find it. Its straight and to the point. Congrats on this video.
@brucecrutchfield34737 жыл бұрын
Awesome video. Not much economizers down here in Florida so they can be a little more time consuming to figure out. Now I have a better understanding of them, thanks!
@lancerudy99345 жыл бұрын
Very nice we all this kind of training. Thanks
@abbottmechanicalservicesll44643 жыл бұрын
24 year tech. Consider myself a pretty good tech. However economizer has always kicked my ask. I always figure it out. Within 15 minutes I figured out an obsolete part. Thank you very much you are simple and very helpful.
@wildoutrudeboy7 күн бұрын
Thx for explaining how economizer works.
@garypoplin45995 ай бұрын
I’ve not had a bad economizer to troubleshoot; but, now I’m confident I can efficiently service one if a problem arises. Great overal understanding and traps for new players!
@randomyoutuber69925 ай бұрын
Great video
@itsmemsti5 жыл бұрын
Excellent explanation. Thank you
@eric44677 жыл бұрын
Subscribed! Very well explained.
@char05076 жыл бұрын
Amazing job first one in manyyyyy that helped me tz
@alexescoto3116 Жыл бұрын
I have never had anyone simply this in such a way that it actually makes sense.
@davidharty3653
Жыл бұрын
Thanks, I did it the way I wish someone would've explained it for me 20 years ago !!
@jmmiller0383 Жыл бұрын
Thank you! Saved so much time and frustration!
@davidharty3653
Жыл бұрын
You’re welcome, glad it helped you
@coachchris5484 жыл бұрын
Great lesson
@PBS-nm1uu7 жыл бұрын
great video thanks
@hvacgabe58897 жыл бұрын
great video. helped me out today. enthalpy sensor was mounted in unit. mounted outside unit on intake. started to work properly.
@edilsonserafim47843 жыл бұрын
Thank you very much for sharing you knowledge I learned so much from you video.
@daryllneuburger49465 жыл бұрын
Great job 👍 thank you so much you made everything so easy to understand
@SlashBurp2 ай бұрын
Amazing video! Thank you verymuch!
@FireandFrostHVAC6 жыл бұрын
Great video, thanks.
@kabu70734 жыл бұрын
Really great, thanks.
@jorgeestrada3894 Жыл бұрын
Thank you for sharing your knowledge with us.
@davidharty3653
Жыл бұрын
My pleasure!
@mikemalone61037 жыл бұрын
Great video and detailed explanation. Much easier to follow than the OEM explains. When economies fails, most just pull the connector and install the jumper to eliminate the economist because the customers don't want to pay for these expensive option repairs especially when the anted of return is usually less than the expense. Still think you missed your calling, should ,vet been a teacher. Your ability to communicate is excellent.
@marcelangers99534 жыл бұрын
Dave Hart Thank you!!
@invisibles3623 ай бұрын
Extremely good in5👍
@christiantinsel64832 жыл бұрын
Excellent video. I'm a sparky just getting into this stuff. And this helps a lot. Any insights on jade controllers? As a layman they seem to run similar to this but I camt figure out how to modulate the economizer enough to prevent positive pressure in this store.
@shanegreen2685 жыл бұрын
Thank you so much. Now I understand. Great video 👍👍👍👍
@Mgear12176 жыл бұрын
Thank you for sharing this. It helps me understand how it works.
@davidharty3653
6 жыл бұрын
metal gear , this is why I do these, trying to pay forward all the guys who helped me
@GrandpaJimSchaper8 жыл бұрын
Since parts are becoming less available for these you might consider a video on how to convert to Jade. The only functional difference is that you need to have the Jade module powered all the time. Not just on a live G signal.
@ekdeepsekhon3274
7 жыл бұрын
why does the jade have to energized all the time?
@l.crossjr4 ай бұрын
Very nice
@hvacr2411 ай бұрын
Excellent video Dave, Thank you. Grand Rapids, MI Griffin Hall
@davidharty3653
11 ай бұрын
My pleasure, I installed a EMS system at the H&M in the woodland mall in Grand rapids like 3-4 yrs ago
@hvacr24
11 ай бұрын
@@davidharty3653 im working on putting in a honeywell jade w7220a1000 in a york unit. i have temp and enthalpy sensors, honeywell sells them a a kit. maybe we can go over how to convert from York's economizer board set up to w7220a1000. just a small 5 ton york, the temps are still well about 53* so no huge emergency.
@khayberadil4 жыл бұрын
The best explanation ever
@newagedawn13585 жыл бұрын
solid tech information, really enjoyed this vid, you are a good teacher!!!!!!, what happened to the jule ???
@hangngoaigiare6 жыл бұрын
very clear instructions, thx
@spiromatsikas24739 ай бұрын
Awesome video, thanks for sharing. What if your unit control board only has a y1 terminal and would you bring the y2 wire form tstat directly to your economizer?
@Jimmyyadayada Жыл бұрын
Good Stuff!! Thank You
@davidharty3653
Жыл бұрын
Glad you liked it!
@fourdragonv23 жыл бұрын
Do you have to tell the thermostat that it is a 2-stage, even if it's a 1 stage? Or do you just have to run the Y2 wire as if it did have two stages? Great video. Very informative and thorough.
@soleilsoleil82875 жыл бұрын
i love this video and the way the teacher explains thx so much more videos please I m an apprenctice in canada hvacr
@davidharty3653
5 жыл бұрын
Soleil Soleil Thanks for the kind words, We’re neighbors/ I’m in Minneapolis, Minnesota
@soleilsoleil8287
5 жыл бұрын
that s awesome keep in touch and more videos when possible i wanna get very good at economizers !!!
@calmdownplzz16624 ай бұрын
Thank you!
@16valve642 жыл бұрын
Thanks a lot sir
@davidharty3653
2 жыл бұрын
Most welcome
@yrwyreazureAjuhtrea7 Жыл бұрын
Is the mixed air temp sensor drawn in the right place? other diagrams seem to show it located before the evap coil.
@Omar219s3 жыл бұрын
thanks for this vid
@jakej813 жыл бұрын
Could you explain the operation of the w7212 Logic when co2 sensors are connected to the aq and aq1 terminals. Does the co2 sensor take over even when free cool is available? Great video! It was very helpful.
@winkhvac624 жыл бұрын
Thank you sir.
@mcvaylitt3 жыл бұрын
So can you by pass it buy jumping 1 and 2? To force cooling?
@jackmcdonald73914 жыл бұрын
I used a 1 stage tstat on a unit with 1 compressor and an economizer.Will it bring on the compressor in the summer? Or do I need to change the tstat
@hvacgabe58897 жыл бұрын
also there's a power exhaust installed with no literature. can you recommend a site for the literature. it's a York. I can get model and serial if needed. thank you.
@Alain07754 жыл бұрын
2 Words: THANK YOU
@mrgreen90863 жыл бұрын
What if you put a jumper between y1 and y2 at the terminal strip? Instead of running a dedicated wire for y2
@timothypawlowski22867 жыл бұрын
David, Awesome video. You mentioned at the end that you can test some actuators with the 9 volt battery. Do you know which honeywell acuators are 9Volt or where I can find that out? I have a carrier unit with a W7212 mounted on top of the M7215a actuator. Thanks
@davidharty3653
7 жыл бұрын
Timothy Pawlowski M7200 series actuator uses a 2-10v signal for its proportional control The 2 in 7200 tells you that actuator it's a 2-10v
@timothypawlowski2286
7 жыл бұрын
thanks dave.
@curtbrooks74957 жыл бұрын
Thanks man huge help
@AZ-gz4cf8 ай бұрын
Best tutorial I’ve seen
@davidharty3653
8 ай бұрын
Thank you, I appreciate you !!
@kamechanicalhvac28915 жыл бұрын
Great video brother ..... Can you make a video on converting the W7459 OR W7212 to a Honeywell jade economizer controller
@nickyengle96689 ай бұрын
Thks !!!
@Brendan_Clancy3 жыл бұрын
To test a compressor during spring maintenance can you jump 1 & 2 on the logic board to energize the compressor contactor?
@davidharty3653
3 жыл бұрын
Yes, Jump 1-2 to test 1st stage compressor Jump 3-4 to test 2nd stage compressor
@xiaojie8957 жыл бұрын
if the cooling call is still unsatisfied even free cooling plus #1 mechanical cooling, how can we set the wire to start the #2 compressor, or this is impossible happen(i mean free cooling + #1 compressor #2 compressor ).
@lancerudy99345 жыл бұрын
Why do you use blue at the oat
@stuartewoldt15133 жыл бұрын
Gotta say this is the best video ever. It would be hard NOT to understand
@blkcrappyescorts2 жыл бұрын
🤙🏼
@reedrutkowski506 жыл бұрын
Question, how does G get energized without power on R (broken by G open contacts)?
@davidharty3653
6 жыл бұрын
Reed Rutkowski / The “R” terminal has a constant 24v power supplied to it from the transformer at all times, I just didn’t draw that into my schematic here and drew out my schematic knowing it was hot but without ever showing it. I cant believe I never drew that into my print :)) Good Find Reed and thanks for sharing that, and I’m the guy who’s always preaching to never assume anything....
@davidharty3653
6 жыл бұрын
Reed Rutkowski/ The R terminal has a constant 24v power supplied to it from the transformer at all times, I just didn’t draw that into my schematic here and drew out my schematic knowing it was hot but without ever showing it. I can’t believe I never drew that into my print :)) Good Find Reed, and thanks for sharing that / And I’m the guy who’s always preaching to never assume anything...
@reedrutkowski50
6 жыл бұрын
David Harty, Thanks for the reply Sir.
@Mike-yh8tv7 жыл бұрын
Thanks so much for your experience and knowledge on economizers...I'm taking these classes in college for hvac/r. Again thanks so much for your knowledge and grace in giving back! Keep up these excellent videos.
@capitolrefrigerationheatin7501 Жыл бұрын
is the MAT sensor polarity sensitive?
@davidharty3653
Жыл бұрын
No its not MAT = Not polarity sensitive Enthalpy Sensor = Is polarity sensitive
@tradelife28025 жыл бұрын
Great video! Definitely helps me understand economizer function a lot better. However, I’m more of a nacho cheese Doritos guy. Still, great video though.
@abbottmechanicalservicesll44643 жыл бұрын
How do I save incase I forget
@razzthokhee11897 жыл бұрын
I meant to say ( informative)
@xiaojie8957 жыл бұрын
8:50-9:30 still confusing. why water will leak if only #2 evaporator work? the moisture into the air will condense on the surface of fin and flow down to the drain pan.
@hangngoaigiare
7 жыл бұрын
water not falling fast enough and the wind from blower fan will blow water all over. When both evaporators work however water less likely be blow off the 1 evaporator due to lower temperature of the evaporator.
Пікірлер: 146
I've been struggling to understand how economizers work for a while now, and this is by far the most in-depth explanation i've seen. Thank you so much for your help.
Fantastic , very good and profesional. Thank you sir
DAVID THIS IS ABSOLUTELY THE BEST ECONOMIZER TUTORIAL i HAVE EVER SEEN!! THANKS
Absolutely the best video I've ever seen on economizer troubleshooting and even describing just how one works. Very nice job!
Thanks for all the kind comments ya'll, This is my way of paying back/ forward what my Friend and Mentor Jim Schaper (Now Retired) did for me when he selflessly shared his vast knowledge and experience with me .. Special Thanks to "Jedi Jim"
@gmguy156
6 жыл бұрын
David Harty Im shocked you dont have more subscribers
@e.j.griffin1758
6 жыл бұрын
David Harty Greatly appreciated, your economize videos has helped me a lot. Thank you.
@jiangbian76
5 жыл бұрын
Just have worked in field for 4 months. Learned the concept of Economizer from your excellent videos. Thank you very much.
WONDERFUL EXPLANATION!!!! Now I feel a little more confident working on these types of units.. Bravo!!
Hey David, I just want to appreciate the knowledge you have imparted to me. You are an excellent expert with extensive knowledge and a very good teacher who explains clearly. I now understand the Economizers, Thank you very much:)
Thanks dave. Nice diagram. Easier to understand than reading carrier literature.
When I was in the apprenticeship program, they never went over how that works. I was always so dam confused on how to troubleshoot that module. Now I finally know, thanks !
@davidharty3653
11 ай бұрын
You are welcome
Best economizer training video out there! Wow!! From your kitchen, no less.
@orlandorizzo5780
5 жыл бұрын
And A Bag of Doritos!!! HAHAHHA
I wish there were more videos like this! Very informative!!! Thank you for putting in the time to do these videos!! 🙏🏽
Excellent video my friend very easy to follow and understand! Cheers!
David your videos are incredibly informative, your videos help me beyond believe, keep em coming man thanks again my friend.
David, thank you kindly for the precise explanation of these economizer sequences. It’s the best explanation I’ve ever seen and it is much appreciated!
Fantastic explanation with visuals.
WOW!!! just an amazing tutorial. The best I've seen on youtube. Thank you so much.
thank you very much, exelent job sharing your knowledge!
Great video brother 💯💯💯💯💯💯💯
@davidharty3653
2 жыл бұрын
Thank You, hope it helps
This is a great video, I’ve come back to this video several times for a refresher while working on a economize.
Thanks for the video, David. Very educational indeed, sir more please and thank you
Awesome video, Thank you very much for sharing your knowledge...
This video is amazing and so helpful. I came back to it every time I have to look at one of these controllers. Thank you for taking the time to make this video and share your knowledge!
@davidharty3653
2 жыл бұрын
Your welcome, thamks for the kind words
Great Video,, very informal, thanks,,,
Nice video ,keep them coming. Thanks
Great video really appreciate the knowledge thank you
This is an excellent training video thank you
Awesome awesome video!!!!! Thank you for your clear explanation! Awesome! Thank you!
great video . I don't work on rooftops a lot . today i worked on a carrier 2 stage RTU with a carrier economizer control . 2nd stage was not coming on . this video explains what happened and why it did. i wish I could keep this videos in my learning records LOl. this is gold . thanks
I been looking for a good tech to explain more better on economizer and you sir are number 1 when explaining. I now have a better understanding because of how you explained it. Thank you🙏
Thank you for the great video 👍
@davidharty3653
8 ай бұрын
You’re welcome !!
Just found your channel. Excellent information
Great teaching and explanation. I enjoyed watching your videos & have saved several for future referencing. Thanks for sharing your knowledge.
Great work sir much appreciated it
Great walk through! Thank you.
Hey David, thanks a lot for the video! Definitely not something you have to do but I am glad you put it up here. I am an apprentice myself and have worked with a few Mechanics now that would sometimes take the Y2 terminal off and tape it or put a marrett on it. I've spent a little bit of time playing with economizers to try and understand them and found that you did need the Y2 terminal. I didn't know however that the module actually communicates with Y2 and can still economize and use a compressor. So far I have been setting up a Time Delay on make with the unit to energize Y2 after Y1 has been energized for a few minutes. This might sound like a ridiculous step to take but it was all I knew haha. Anyways, thanks again for the video it was very helpful!
Excellent video to bad it took so long for me to find it. Its straight and to the point. Congrats on this video.
Awesome video. Not much economizers down here in Florida so they can be a little more time consuming to figure out. Now I have a better understanding of them, thanks!
Very nice we all this kind of training. Thanks
24 year tech. Consider myself a pretty good tech. However economizer has always kicked my ask. I always figure it out. Within 15 minutes I figured out an obsolete part. Thank you very much you are simple and very helpful.
Thx for explaining how economizer works.
I’ve not had a bad economizer to troubleshoot; but, now I’m confident I can efficiently service one if a problem arises. Great overal understanding and traps for new players!
Great video
Excellent explanation. Thank you
Subscribed! Very well explained.
Amazing job first one in manyyyyy that helped me tz
I have never had anyone simply this in such a way that it actually makes sense.
@davidharty3653
Жыл бұрын
Thanks, I did it the way I wish someone would've explained it for me 20 years ago !!
Thank you! Saved so much time and frustration!
@davidharty3653
Жыл бұрын
You’re welcome, glad it helped you
Great lesson
great video thanks
great video. helped me out today. enthalpy sensor was mounted in unit. mounted outside unit on intake. started to work properly.
Thank you very much for sharing you knowledge I learned so much from you video.
Great job 👍 thank you so much you made everything so easy to understand
Amazing video! Thank you verymuch!
Great video, thanks.
Really great, thanks.
Thank you for sharing your knowledge with us.
@davidharty3653
Жыл бұрын
My pleasure!
Great video and detailed explanation. Much easier to follow than the OEM explains. When economies fails, most just pull the connector and install the jumper to eliminate the economist because the customers don't want to pay for these expensive option repairs especially when the anted of return is usually less than the expense. Still think you missed your calling, should ,vet been a teacher. Your ability to communicate is excellent.
Dave Hart Thank you!!
Extremely good in5👍
Excellent video. I'm a sparky just getting into this stuff. And this helps a lot. Any insights on jade controllers? As a layman they seem to run similar to this but I camt figure out how to modulate the economizer enough to prevent positive pressure in this store.
Thank you so much. Now I understand. Great video 👍👍👍👍
Thank you for sharing this. It helps me understand how it works.
@davidharty3653
6 жыл бұрын
metal gear , this is why I do these, trying to pay forward all the guys who helped me
Since parts are becoming less available for these you might consider a video on how to convert to Jade. The only functional difference is that you need to have the Jade module powered all the time. Not just on a live G signal.
@ekdeepsekhon3274
7 жыл бұрын
why does the jade have to energized all the time?
Very nice
Excellent video Dave, Thank you. Grand Rapids, MI Griffin Hall
@davidharty3653
11 ай бұрын
My pleasure, I installed a EMS system at the H&M in the woodland mall in Grand rapids like 3-4 yrs ago
@hvacr24
11 ай бұрын
@@davidharty3653 im working on putting in a honeywell jade w7220a1000 in a york unit. i have temp and enthalpy sensors, honeywell sells them a a kit. maybe we can go over how to convert from York's economizer board set up to w7220a1000. just a small 5 ton york, the temps are still well about 53* so no huge emergency.
The best explanation ever
solid tech information, really enjoyed this vid, you are a good teacher!!!!!!, what happened to the jule ???
very clear instructions, thx
Awesome video, thanks for sharing. What if your unit control board only has a y1 terminal and would you bring the y2 wire form tstat directly to your economizer?
Good Stuff!! Thank You
@davidharty3653
Жыл бұрын
Glad you liked it!
Do you have to tell the thermostat that it is a 2-stage, even if it's a 1 stage? Or do you just have to run the Y2 wire as if it did have two stages? Great video. Very informative and thorough.
i love this video and the way the teacher explains thx so much more videos please I m an apprenctice in canada hvacr
@davidharty3653
5 жыл бұрын
Soleil Soleil Thanks for the kind words, We’re neighbors/ I’m in Minneapolis, Minnesota
@soleilsoleil8287
5 жыл бұрын
that s awesome keep in touch and more videos when possible i wanna get very good at economizers !!!
Thank you!
Thanks a lot sir
@davidharty3653
2 жыл бұрын
Most welcome
Is the mixed air temp sensor drawn in the right place? other diagrams seem to show it located before the evap coil.
thanks for this vid
Could you explain the operation of the w7212 Logic when co2 sensors are connected to the aq and aq1 terminals. Does the co2 sensor take over even when free cool is available? Great video! It was very helpful.
Thank you sir.
So can you by pass it buy jumping 1 and 2? To force cooling?
I used a 1 stage tstat on a unit with 1 compressor and an economizer.Will it bring on the compressor in the summer? Or do I need to change the tstat
also there's a power exhaust installed with no literature. can you recommend a site for the literature. it's a York. I can get model and serial if needed. thank you.
2 Words: THANK YOU
What if you put a jumper between y1 and y2 at the terminal strip? Instead of running a dedicated wire for y2
David, Awesome video. You mentioned at the end that you can test some actuators with the 9 volt battery. Do you know which honeywell acuators are 9Volt or where I can find that out? I have a carrier unit with a W7212 mounted on top of the M7215a actuator. Thanks
@davidharty3653
7 жыл бұрын
Timothy Pawlowski M7200 series actuator uses a 2-10v signal for its proportional control The 2 in 7200 tells you that actuator it's a 2-10v
@timothypawlowski2286
7 жыл бұрын
thanks dave.
Thanks man huge help
Best tutorial I’ve seen
@davidharty3653
8 ай бұрын
Thank you, I appreciate you !!
Great video brother ..... Can you make a video on converting the W7459 OR W7212 to a Honeywell jade economizer controller
Thks !!!
To test a compressor during spring maintenance can you jump 1 & 2 on the logic board to energize the compressor contactor?
@davidharty3653
3 жыл бұрын
Yes, Jump 1-2 to test 1st stage compressor Jump 3-4 to test 2nd stage compressor
if the cooling call is still unsatisfied even free cooling plus #1 mechanical cooling, how can we set the wire to start the #2 compressor, or this is impossible happen(i mean free cooling + #1 compressor #2 compressor ).
Why do you use blue at the oat
Gotta say this is the best video ever. It would be hard NOT to understand
🤙🏼
Question, how does G get energized without power on R (broken by G open contacts)?
@davidharty3653
6 жыл бұрын
Reed Rutkowski / The “R” terminal has a constant 24v power supplied to it from the transformer at all times, I just didn’t draw that into my schematic here and drew out my schematic knowing it was hot but without ever showing it. I cant believe I never drew that into my print :)) Good Find Reed and thanks for sharing that, and I’m the guy who’s always preaching to never assume anything....
@davidharty3653
6 жыл бұрын
Reed Rutkowski/ The R terminal has a constant 24v power supplied to it from the transformer at all times, I just didn’t draw that into my schematic here and drew out my schematic knowing it was hot but without ever showing it. I can’t believe I never drew that into my print :)) Good Find Reed, and thanks for sharing that / And I’m the guy who’s always preaching to never assume anything...
@reedrutkowski50
6 жыл бұрын
David Harty, Thanks for the reply Sir.
Thanks so much for your experience and knowledge on economizers...I'm taking these classes in college for hvac/r. Again thanks so much for your knowledge and grace in giving back! Keep up these excellent videos.
is the MAT sensor polarity sensitive?
@davidharty3653
Жыл бұрын
No its not MAT = Not polarity sensitive Enthalpy Sensor = Is polarity sensitive
Great video! Definitely helps me understand economizer function a lot better. However, I’m more of a nacho cheese Doritos guy. Still, great video though.
How do I save incase I forget
I meant to say ( informative)
8:50-9:30 still confusing. why water will leak if only #2 evaporator work? the moisture into the air will condense on the surface of fin and flow down to the drain pan.
@hangngoaigiare
7 жыл бұрын
water not falling fast enough and the wind from blower fan will blow water all over. When both evaporators work however water less likely be blow off the 1 evaporator due to lower temperature of the evaporator.