How Do Relays and Transformers Work in HVAC?

Learn the basics of HVAC transformer and relays in this informative video! Perfect for those looking to learn more about the HVAC industry and how to become an HVAC technician.
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In this video you will learn
How to wire a transformer?
What a transformer is used for?
How to wire a relay?
What a relay controls?
What is a normally open contact?
What is a normally closed contact?
How to use your meter to check coil voltage?
How to wire a motor?
What is a sequencer?
What does a sequencer control?
How to wire a thermostat?
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#thermostat #wiring #hvac #relays #contactor #sequencer
• What size HVAC Equipme...
Taddy Digest Website
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@FieldpieceProducts

[@timothygardner2974]

Some people just have the gift to explain things and make it simple. You Sir have that gift. Thank you From a avid DIY’er, one of the best vids I’ve seen on ANY subject

[@TaddyDigest]

You're welcome thank you very much for your kindness. I hope you're having a great day..

[@jt.00011]

Brother thank you so much for this demonstration! I'm actually doing this in hvac school right now. You definitely have a teaching gift!

[@TaddyDigest]

Thank you so much, my friend.I'm glad you enjoyed the video

[@oscarcaro7919]

This informative video covers relays, Contactors, transformers, Thermostats, motors. It goes to the point and covers a lot of useful information. Thank you for showing and sharing your knowledge in a simple but extremely valuable way. Please post more HVAC videos.

[@TaddyDigest]

Glad it was helpful!

[@roqueherrera2692]

DUUUUDE u just opened my eyes on relays. After 16 years of hvac 🤦🏻‍♂️. I can seriously die happy. Thank u 🙏🏼

[@TaddyDigest]

Awesome thank you so much please Share the video

[@leonardcollins8122]

I liked this 3x just to make sure my like was accounted. I asked my school instructor to explain normally open verses normally closed...he could not adequately explain it like u just did. Thank u

[@antoniolaracuente437]

Been in the fields for 40 years. Basically, oil burners today we're converted lots of oil burners to gas. I learned how to use the meter. And I also learn how to check my relays and Transformers. Great information, buddy, thank you.

[@TaddyDigest]

Glad you watched video so glad I made this video so glad I could Help. Please share when you can

[@charleswashington7576]

Good video, I want to share some info on a comment you made. Correct me if I'm wrong. Yes, sequencers do have timed delays built in and that's not the only difference. Additionally, sequencers are design to support the high amp demand that heating elements draw. Those relays like the 90340 you demonstrated are design to carry inductive loads like a condenser or blower motor. NOT resistive load like heat stripes. Those relays would turn into hot fudge sundays. Now, the contactor relay would do well. Sir, you handle those probes like Chinese chop sticks, best i have ever seen. Great job, I enjoy the channel.

[@TaddyDigest]

You're awesome great information Charles Thank you

[@joehead1294]

90-340 relays can handle resistance loads as well, you just don't see many in that occupation. They max out at 15 amp.

[@jeffw527]

I to was impressed with the way he handled those probes.

[@waynelindsay327]

I thank you wonderful information, your videos are great

[@salv638]

Spot on my man!!!! Ive been in the field for 18 years and you explained it perfectly!!

[@stuartewoldt1513]

Bravo Man, you did this in such a elementary way almost anyone could understand.

[@TaddyDigest]

Excellent Thank You

[@dannyrichardson9247]

It's so great to watch the guru of hvac. Straight to the point and broke down in crayon for me to understand. Love it..

[@guillermo5812]

you are a perfect teacher

[@TaddyDigest]

Thank You

[@mgm1018]

This video was great! I was trying to make sure I knew exactly what I was doing before attempting to replace an old mercury line voltage thermostat in my basement with a new smart thermostat. The main floor Tstat was LV already, but the basement zone was HV for some reason. You made it super easy to understand that I want the heat call wire off the thermostat and the common wire to power the relay, and then the HV lines will be connected to the normally open poles that close the circuit when the control side provides power.

[@TheRicardo7500]

Thanks Taddy, the more I watch this video, the more I get the concept of how relays work and how to combine them.

[@TaddyDigest]

Excellent!

[@oscar3181]

You are very good at explaining how things work 😀 thank you

[@homes1001]

I really appreciate this video. Not just for the knowledge on application, but for explaining the components. Going to watch this a few times to try and get it set in my head.

[@TaddyDigest]

Very cool thank you so much for watching. Please put it on auto play that way it helps me.

[@danielgomes4754]

I was having some a/c problems and came across this video. This is a good explanation on Relays and helped me a lot in figuring my problem.

[@lukehall1790]

Feel like imma have to watch this a few times lol

[@TaddyDigest]

Hope you like it Please share if it helps you

[@jollyscaria1922]

24v volt coroled realy snd normaly oon and closed realg crolhvac systom selftey thefmostsnand corold ealy snd eizing cotntacted and owefpoter srlft hc systo uding fancspiter starting usingfsnone side in .oug engzing sstm working

[@dlowe204]

I've had to learn basic controls for the plumbing course I'm taking, nothing really makes sense. This video was explained very well and simplified for beginners like myself. Thanks!

[@TaddyDigest]

Glad it helped!

[@txmade72]

You did a great job simplifying the details 👏🏿 👍🏿

[@TaddyDigest]

Thank you 😊 Glad you watched 👀 😊

[@mrlegendary9298]

@taddydigest You should show the proper usage of those crimping pliers. The part you used @15:06 is labeled NON, for use with NON insulated terminals. You should use the section labeled INS, designed for insulated terminals as shown. It makes a difference, as the one tends to damage the nylon barrel.

[@TaddyDigest]

Great video idea explaining the difference thank you

[@peteaceves5237]

I believe the rounded side goes on the side with wire being crimped as well as using the insulated part of the tool. If you use the pointy side on the barrel end you'll clamp down one side more than the other.

[@DavidDiaz-ij9uc]

Great explanation, informational video.

[@TaddyDigest]

Glad you enjoyed it!

[@TaddyDigest]

please share the video

[@BiPolar-gf5sn]

Great explanation! Thank you

[@TaddyDigest]

Glad you enjoyed it!

[@connorcoutant2059]

Thanks man for the info! Go to these lengths and to teach and help me understand better

[@TaddyDigest]

Glad you enjoyed the video please share if you can

[@boblevey]

That was a great watch!!! Not a AC Tech but a DIY’er Thanks

[@ballkickers7142]

very good explanation . very helpful it really helps a lot

[@erikstricklen6633]

Great video

[@TaddyDigest]

Glad you enjoyed it

[@urielgarciaramirez208]

You basically set me up for a good mark in my next lab exam. Thank you so much!

[@TaddyDigest]

Glad I could help!

[@honey____world5724]

This video is one of the best I’ve seen yet, very easy to understand.

[@TaddyDigest]

Awesome thank you so much for watching Please share and hit the like button

[@TheMaster5150]

I completely understand both relays on how the 24 volts changes each pole from open to close. The only problem I'm having is that you didn't discuss the wiring on the connectors and their purpose. For instance, on pole 1,2, and 3, are they all hot wires? Why would you need power to 2, then shut it down and send power to 3?

[@IXArcanine]

Man this video was awesome. It's got known knowns, known unknowns and unknown unknowns. Stuff I know I know, stuff I know I didn't know and stuff I didn't know I didn't know. Very helpful.

[@TaddyDigest]

Right on!

[@johncantrell614]

Just me, I have been a marine electrician for 34 years. When you put the female connector into the sta-con tool, you had it with the tooth over the seam of the connector. But when you crimp them this way, the two halves with the seam will spread apart because of the tooth on the tool, not giving you the best crimp possible. We were always taught to do it with the tooth on the other side of the connector, so the tooth would push up and into the connector, and the part with the wire and the seam will push up and form around the wire, giving a tight crimp. Nit picking, I know, but inspectors in our field anyway would hit these connections if crimped with the tooth on the seam, and you would have to cut it off and do it the other way. But a very informative video in any case.👍

[@taketinnn33]

Wish I had found this channel earlier. You have great teaching methods. Thanks Tad

[@TaddyDigest]

Happy to help!

[@jollyscaria1922]

Normly opn nrmly closed rey contacted 24v one cotacted comen c th..cotacted ctancted one side contacted one side contacte rely contectedo engizing outer power fan out comeing rely and

[@salmannawaz5392]

MaaaaaN, you have explain it so well, i have been never able to learn it so well. like the whole wiring system is been explained so well, which always haunted me. keep it up

[@Alex-jo2oi]

Watching this video with some field experience and some foundational knowledge helps a lot. It all clicks and makes very much sense. Thank you Taddy I’ve come a long way bro.

[@TaddyDigest]

Great to hear!

[@yessur8509]

Nice !!! Just joined an HVAC company and this helps !! 💯💯💯💯👍🏽🔥🔥🔥 love your content 🔥💯

[@carlosbarcelo2010]

Thanks for the refreshing course ☺️ 😊

[@TaddyDigest]

you're welcome, Carlos 🙏

[@jessemendez647]

Great video Tad! Keep up with the great work.

[@TaddyDigest]

Thanks a ton!

[@joshfranklin7513]

I just started HVAC and this video was very helpful with understanding with visual representation. Pls keep the informative vlogs on the tube

[@TaddyDigest]

I got your brother thank you so much for watching

[@kizito8888]

Thank you for the video.

[@TaddyDigest]

You're welcome thank you for watching. Please share the video when you can

[@kizito8888]

@@TaddyDigest Will do.

[@DanielDotson-b7h]

Awesome class great teaching skills enjoyed thanks for your time

[@franklmon9610]

Thanks for sharing your a good man

[@TaddyDigest]

I appreciate that

[@mauroaparicio1855]

very good information thank you for sharing

[@TaddyDigest]

You're welcome thank you so much for watching

[@principeazteca2000]

Thanks Taddy...you are my hero👍👍👍👍

[@TaddyDigest]

Wow, thanks

[@RC-Heli835]

Thanks for sharing this man. I did not know that these relays function with normally closed and normally open switches. I'm pretty positive that I have a bad relay right now not letting 24 v get to one terminal of the honeywell S86F igniter.on my furnace.

[@pctuterman1]

Best video on hvac ever. I had to subscribe. 👍 👌

[@TaddyDigest]

Thank you my friend share the video when you can.

[@ZachHyatt-p8y]

Thank you so much buddy for the great video.

[@TaddyDigest]

You're welcome my friend

[@tptm100]

Thank You! I have been looking for a great video on this topic for a long time. Knowing about something is one thing but being able to explain it in easy terms is what we need more of. 10 out of 10 rating.

[@TaddyDigest]

Awesome Tom thank you so much you rock

[@andresbravo6447]

I agree awesome video!

[@TaddyDigest]

Thank you so much Please let me know what video ideas I can do in the future they would bring really good value Check out my members only videos Please do not forget to hit the notification bell hit the link button and share my content

[@Michael046145]

I literally took notes watching this.

[@stephonthomas4306]

lol felt like you was explaining colors and shapes to a child....and i understood everything lol thanks

[@TaddyDigest]

hahaha 😂 😂 😂 😂

[@canik9mm]

Thanks for the video as a rookie in the field you made it simple. Thanks

[@TaddyDigest]

your welcome Glad you watched 👀 😊

[@willfergusson724]

Great video!

[@TaddyDigest]

Thank you my friend. Please share the video if you have time.

Maaaannnn its Feb.2024!!! I just found ur channel. Ur awesome!!. this has cleared up some many issues, that I had. Thank you much. Could you explain what "Common" really is, please?. Especially on the low voltage circuitry. It is still an issue on how it works. Thnx again.

[@Strictly4Defense]

Dude.. you rock! Everything on this video I finally understand after all these years I had somewhat an understanding. But this was clear refresher. Thank you.

[@TaddyDigest]

Rock on!

[@livingyourbestlife711]

Excellent. I just found your vlogs. Incredible teaching! I am using these to train my HS boy to test units so he can help me with my HVACR business! This is worth gold, buddy! Thank you so much and I admire your teaching!

[@TaddyDigest]

You're welcome thank you so much for watching my friend

[@josephprincefanclub]

Great video. Thank you.

[@TaddyDigest]

You're welcome thank you for watching

[@elmermancia3507]

Thanks thousand times

[@brunomelvin4233]

Very informative. You have done a good 👍 job for us to learn. Thanks a lot.

[@TaddyDigest]

awesome Thank you for watching

[@solitarioelloboferoz947]

Thx amazing video

[@TaddyDigest]

Glad you liked it

[@MKproSolution]

Great video!!

[@TaddyDigest]

Glad you enjoyed it

[@saammmbo]

Tip for apartment maintenance work order/on call, if they state the heat won’t turn off or it’s 100 degrees in their apt.. most likely the Sequencer. Don’t forget to visually inspect all wires for burns and loose connections 👍🏼

[@davidaustin9009]

Hey Tadd..thank you for how patient you are when you share your knowledge..you should be a professor..ua techs really appreciate the simple and yet soo informative videos...auperthanks bro...

[@TaddyDigest]

You're welcome my brother. Thank you so much for watching and thank you for your compliments because of you. I keep going.

[@garlandohoward2896]

Great video A+

[@TaddyDigest]

Thanks for the visit

[@mannysoad]

Dude this helps so much I’m still learning but this was explained well and not to much information just the essentials

[@TaddyDigest]

Glad it was helpful!

[@jtoot6391]

i didnt know what relays were, now i actually understand it. thanks!!

[@TaddyDigest]

Awesome Joshua thank you so much for watching

[@albertobarrameda6128]

Thank u Sir, very useful to me💪

[@tjeskew3891]

Im just now really getting these issues and this video is so freakin helpful. Thanks so much man. This is awesome!!!

[@TaddyDigest]

Glad it helped!

[@jeanfrancois7470]

Good job thankyou

[@TaddyDigest]

your welcome Glad you watched 😊

[@miguelrojas3394]

Thanks Taddy great explanation your the best.🙏🙏

[@TalentNetworked]

Thanks for detailed training.

[@TaddyDigest]

your welcome Glad you like it 😀

[@cano123456789678]

Thank you

[@TaddyDigest]

You're welcome

[@juanvasquez7148]

just thank you so much for your time making this video God bless you.

[@TaddyDigest]

You are so welcome

[@mdrobin5355]

Thank you 😊

[@TaddyDigest]

your welcome Glad you watched it 😊 😀

[@dereksosa5801]

Awesome video I'm usually doing construction and recently moved over to the service side and this helped me out so much thank you and keep posting videos like this very much appreciated

[@TaddyDigest]

Great to hear!

[@ryandunlap2096]

Fantastic video. Very informative. Thank you for taking the time to do this!

[@TaddyDigest]

You're welcome thank you for watching please hit the like button And don't forget to hit the bell

[@1975coronel]

Thanks for your patience and beautiful information definitely I learned thanks you blessings

[@TaddyDigest]

You're welcome awesome I'm so glad that you learned it makes the video worth doing

[@mgm1018]

With winter approaching I’m finally getting to installing my basement smart thermostat that has line voltage inputs. It was at the bottom of my list since my heat only system is not needed in the summer here. Do you have any recommendations for what brand/model relay to use for controlling the HV switched boiler heat with the smart thermostat? I already have the boiler transformer I’m tapping and ran the LV lines to power the smart thermostats, so I don’t need a transformer/relay, just a regular one. Much appreciated. I feel as though the knowledge and confidence I acquired months ago has faded from my mind 😅

[@nogarasj]

You are the best man! 👍

[@TaddyDigest]

Wow, thanks!

[@heatingairservices8708]

Great HVAC Tech Tips ..Thanks Tad

[@TaddyDigest]

Thank you for watching my friend

[@michaelwiltgen5208]

This made things much easier to understand ill be watching the rest of these hvac related videos for sure

[@TaddyDigest]

Very Good Thank you 😊 Glad you watched please let me know if you have questions Check out my members only playlist It's nice

[@Nothingman88]

Thank you!

[@TaddyDigest]

You're welcome!

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Hi Taddy all video's you are have are awesome 👌 👏 👍

[@TaddyDigest]

Thank you Joe stay tuned there's more to come

[@joelgonzalez5462]

Of course I will, see other guys, are good too , but yours are more goods !

[@baldguyadventure]

Thank you for the video! My blower had quit working and i thought the start cap was bad so I replaced it but the problem persisted. The compressor was running but there was no air moving. I spent a couple hours in the crawl space at the unit (old Trane XE 1100 with gas - Pulse unit) and every time I tried to run the fan I heard this humming. So I tapped the fan relay enclosure and it kicked on! My local supply place had a tp-90340 for 13 bucks that replaced the very old p-8-10283.

[@TaddyDigest]

Awesome so glad they had the part Thank you for watching

[@franciscotejeda1461]

Excelent video n Happy New Years n God Blesssing

[@TaddyDigest]

Happy new year

[@Woozy-pt9js]

Welp this video just made it click in my head. Liked and subscribed. Thank you!

[@TaddyDigest]

Awesome you're welcome

[@Rod264]

The Best!!!!!!

[@jillfoster6766]

Hi Tad, I have an electric ac/furnace unit. It has a safety alert to tell me when there's water in the bottom pan. My thermostat went bad. I changed it and blew a fuse, I fixed that. So now I have my thermostat on nothing runs. I wire my Yello, green & ref low voltage wires all together. I can then run my ac & blower, but the blower won't shut off. Do you know any reason the safety alert might have something to do with the fan always on?? OMG, I'm on my fourth day of trouble shooting, and it was 90 today😢 unemployed until next month, so here I am on KZbin University. I've now watched all of your videos. Thank you for them!

[@stansummers6259]

Great video from Cadiz Kentucky

[@TaddyDigest]

Awesome thank you for watching stan

[@davidmoreira5542]

Amazing video thank you so much

[@TaddyDigest]

Your Welcome David Please Watch More

[@davidmoreira5542]

I have a question if you have time? Can I send you a pic of what I’m working on?

[@TaddyDigest]

send me an email [e-mail]

[@vikingpapi]

This video taught me SO much. Thank you, sir.

[@TaddyDigest]

So glad to hear my friend Here's my email make sure that you email me. I have a guide I can send you.

[@TaddyDigest]

[e-mail]

[@FranciscoGarcia-sd2xf]

Thanks you tedy

[@TaddyDigest]

You're welcome My friend

[@calderona616]

Thanks alot for making this type of videos man! I have learn alot thanks to you

[@TaddyDigest]

Happy to hear that! Thank you for watching my friend.

[@joselarin1146]

Gracias bro

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Very informative, straight to the points. Thanks for the video

[@TaddyDigest]

thank you 😊

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This video is amazing! Thank you!

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Great video! Thank You!

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Thanks teddy

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Great teacher

[@TaddyDigest]

Thank you brother

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God is blessing you, thank you

[@TaddyDigest]

Thank you my brother May God-bless you