How Do Relays and Transformers Work in HVAC?
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- Опубліковано 29 вер 2024
- 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
taddydigest.com/
@FieldpieceProducts
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
You're welcome thank you very much for your kindness. I hope you're having a great day..
Brother thank you so much for this demonstration! I'm actually doing this in hvac school right now. You definitely have a teaching gift!
Thank you so much, my friend.I'm glad you enjoyed the video
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!
Glad it helped!
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.
You're awesome
great information Charles
Thank you
90-340 relays can handle resistance loads as well, you just don't see many in that occupation. They max out at 15 amp.
I to was impressed with the way he handled those probes.
I thank you wonderful information, your videos are great
you are a perfect teacher
Thank You
You basically set me up for a good mark in my next lab exam. Thank you so much!
Glad I could help!
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.
You did a great job simplifying the details 👏🏿 👍🏿
Thank you 😊 Glad you watched 👀 😊
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.
Great to hear!
That was a great watch!!! Not a AC Tech but a DIY’er
Thanks
Thank you for the video.
You're welcome thank you for watching. Please share the video when you can
@@TaddyDigest Will do.
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
Great to hear!
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 👍🏼
Great video Tad! Keep up with the great work.
Thanks a ton!
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 UA-cam University. I've now watched all of your videos. Thank you for them!
Thank you 😊
your welcome Glad you watched it 😊 😀
I love the 701 thermostat
GREAT VIDEO
Thanks Tercy
Great great information 👍
Glad you liked it
Good video bro … learning more how to troubleshoot,,,,,, i have a question tho Why some thermostats dont have the common wire hooked up on the actual thermostats?
Some thermostats don't have a common because they have batteries
Great video
Thank you really appreciate you watching the video
Hit the like button
Boss Level❤
First year hvac student here and I'm loving the info, but feel like you are going too fast for my brain. I am add and most likely undiagnosed mildly dyslexic as well. I keep getting tripped up with which ones are n/o and n/c. I also realize that some are pressure and some are temp, but any advice other than reading the manual (if it's there?) I seem to do well with most bugs in the lab, but that is not the same at all as walking up to a furnace/ac in the field.
Thank you for any input or advice
Excelent video
thank you
You're welcome
Thanks just a novice enjoyed
Feel like imma have to watch this a few times lol
Hope you like it Please share if it helps you
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
Great Video. Very informative. 😀
Glad you enjoyed it!
Get video. Keep up the great content 👏
Awesome David thank you so much
Love it keep up the great work 🙌🏻🙌🏻🙌🏻🙌🏻
Thank you! Will do!
Thanks
Your Welcome
Great Video Dude👍🏼
Thank you Tony
I appreciate you watching please hit the like button and share the video
Thank you for this video I’m a new tech just finished school and am trying hard to keep it all in my head …. I have a lot of units and not a lot of support I’m definitely interested in the one and one phone call option … how many calls and duration… thanks again your an awesome teacher
You are so welcome!
ua-cam.com/channels/uMyjTVlkM4xZ5z_eSyoB1w.htmljoin
I feel like I will have to watch this a few times.
Love that video
Thank you so much please like
Please make a vedio how to remove stator winding from career 06D compressor. What tools required please make a vedio because lots of technicians will learn from you sir. From Bahrain. Working in Bahrain.
ok I will check it out thank you
is the common wire on the air handler board always energized 24v ? coming from transformer C wire usually closed contacts on the condenser relay , just left a job site ,jump R to Y & O terminals on the heat pump condenser so people can have acold air) im in NYC & we have a heatwave ( solenoid valve was making buzzing sound i check the voltage 27v not sure what is the issue here going back to the job site tomorrow it was a late call . any advice appreciate it
it is not uncommon for a solenoid coil to buzz
c to r always have 24 volt
In the office on the 7th day 🙈
Glad you watched 😀
Did this video yesterday 👀 just posted today 👀😅
@@TaddyDigest it came up on my notifications. I just clicked it to remind you to rest 🤜🤛😀
7 day, what day is that?
@@markferguson3477 if you go buy a calender at Walmart, what does it say my friend ...
If I have a heat pump and I wanted to use a relay besides the contactor for cooling to energize the reversing valve in cooling mode (y) and de-energize (w) would I wire on N.O and N.C contacts on relay?
That's a great question I'll try to do a video of it when I get time
@@TaddyDigest thank you I'm retrofitting a heat pump this week
It is my understanding that your equipment mandates whether it energizes on cool or heating.
that is correct
@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.
Great video idea explaining the difference thank you
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.
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?
Thanks for the video. I've been troubleshooting a Hallmark horizontal oil fired furnace. I'm having an issue with it going into a lockout. Sometimes it will work for a couple days, others just a few hours. Order of replaced parts are...oil Filter, pump screen/strainer, nozzle, electrodes (adusted properly), and cad sensor have all been replaced in the last 2wks. I added a pressure gauge to the pump and its reading 140psi...single oil line, above ground, gravity oil tank. This is an older pump, no shutoff solenoid. The flame looks great & the limit switch seems to be operating properly. The ignition transformer throws an arc at least an inch. No smoke or soot. Have you ever run into an intermittent problem like this that was the transformer or fan relay? Any suggestions would GREATLY be appreciated. Once I press the red reset button the furnace fires right up and I can never get it to act up while watching it. Thanks in advance.
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.
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 😅
Do you have budget friendly must have tools for beginning HVAC techs?
Question I have a Jard 17325, How can you tell which side is the Load or Power. Their no label on either side?
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.
Glad it was helpful!
Great, where is the 24 volt transformer located ( for the contractor ) I have no 24 volts there when I turn it on. Thank you
Wiring for 230v would be orange as well?...
Excelent video n have a good day m Marry Christmas
I love your videos. I watch it over & over until it burns my brain.
Question: I am working on Carrier HVAC which is 25 years old. I replaced the transformer and I checked all the wires. I got all the power but My Control Board has no red light. Any suggestions I appreciate it.
check for 24 volts and then yes replace board
Only complaint, used the non insulated crimp on an insulated spade
very good explanation . very helpful it really helps a lot
A bl wire and a wh wire go to the motor. Would you say one is power,and the other is completing the circuit? Did the Amp draw difference tell which is which?
I'm not sure. It's been a long time since i've watched this video
Great video. I just think you should have hooked something up on the back side of the relays. I understand all three are exactly the same thing, just with different voltage. But to someone who doesn't know, ok, what do I do with that normally open pin and that normally closed pin. You hooked it all the way up on the contactor. It used to confuse the shit shit out of me. Until I figured out im doing the samething with the contactor as the relay.
Thank you for the video idea I really appreciate you
The inside blower motor takes a long time to start after the compressor started
Tad , you could check with a Mega 500 relay?
Got a new central A/C unit installed and the relay buzzes loudly when engaging.
One guy said it's normal but it didn't do it before.
Will a soft start unit elininate this?
It may help to eliminate this but i'm not sure because you could have another issue
Great info but figure out how to turn off the image flip on your phone.
When don’t have good voltage is not good coil, contactor,
What was the name of the part reverse the polarity.
Thank u Sir, very useful to me💪
I just got my relay in the mail. It had tape on the coil so I took it off. There is a little residue on it. Do I need to get that off entirely or is it OK? It's just a little bit
Should be fine don't worry about it
Excelent video n Happy New Years n God Blesssing
Happy new year
One side of the coil... Other side of the coil
Do 240v hvac transformers supply 24v dc or ac current?
24 volt AC current
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
Thanks man for the info! Go to these lengths and to teach and help me understand better
Glad you enjoyed the video please share if you can
Is there a way to call you for questions and pay you for your time?
Yes
I talked to people from my youtube channel everyday
They go through the memberships and they join and get my phone number.
thanks so much for teachinh me
Yeah I have an HVAC installer that is scratching their head just had an American Standard gold 17 two stage heat pump installed paired with a platinum 1050 thermostat for zone control system wouldn't come on even though both control boards on the air handler and the heat pump were all green they are thinking there is a relay missing manual says it needs a relay for a non-communicating air handler and heat pump air handler is an American Standard Gold TEM6B0C60H515A paired with A Gold 17 American Standard 5 TON 17 SEER CONDENSER Heat Pump 4A6H7060A1000A they used an American Standard Platinum 1050 thermostat tried to use a gold 827 thermostat and it threw the exact same error codes so they swapped it for the Platinum 1050 and it kept doing the exact same codes and wouldn't send a call to turn the system on.
Yeah you may need that 24 V kit
@@TaddyDigest yeah turns out that's what they come up with called trane this morning and was told they would need the relay panel because both my air handler and heat pump are non-communicating and the 1050 thermostat is a communicating thermostat and only has three wires a hot a neutral and a data that data wire basically does all the work of the other four wires needed that tells the air handler and condenser / heat pump what to do so a 24 volt relay command panel is used as the bridge. And the only reason I need the 1050 thermostat is because they also set up zones I have a section in my home that stays hotter than the rest so they zoned it off to where my system will shut off the part that gets cold too bad and redirect it to that room that stays hotter than the rest it's on the west side of the house.
Very cool sounds like you got a plan and you know what you're doing
good luck my friend
Spot on my man!!!! Ive been in the field for 18 years and you explained it perfectly!!
Thanks thousand times
You’re fuckn awesome bro🤞🏽
Thank you my brother
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.
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.
Very cool thank you so much for watching. Please put it on auto play that way it helps me.
But what about VA and sizing? Not to be that troll but if we gone talk about transformers that part of the discussion
I can do video about sizing sure
@@TaddyDigest love your vids. Been in the industry for 24 years on the tech side. And More on management and install than that. Love your vids. Been wanting to do it myself.
The Best!!!!!!
Taddy ..dou you have a video how to read schematics?
I have several videos on schematics
Type in the search bar my channel name and schematics
Best video on hvac ever. I had to subscribe. 👍 👌
Thank you my friend
share the video when you can.
Very informative. You have done a good 👍 job for us to learn. Thanks a lot.
awesome Thank you for watching
You should be an Hvac Instructor.
thanks I agree
Great explanation! Thank you
Glad you enjoyed it!
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.
DUUUUDE u just opened my eyes on relays. After 16 years of hvac 🤦🏻♂️. I can seriously die happy. Thank u 🙏🏼
Awesome thank you so much please Share the video
New to the field. Got a package unit that was freezing up. Noticed the blower doesn't come on when i call for fan, but the compressor and condenser fan comes on when I call for cool. Possibly the fan relay?
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.
Glad you watched video so glad I made this video so glad I could Help.
Please share when you can
lol felt like you was explaining colors and shapes to a child....and i understood everything lol thanks
hahaha 😂 😂 😂 😂
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
Bravo Man, you did this in such a elementary way almost anyone could understand.
Excellent Thank You
Thanks Taddy...you are my hero👍👍👍👍
Wow, thanks
Gracias bro
Nice !!! Just joined an HVAC company and this helps !! 💯💯💯💯👍🏽🔥🔥🔥 love your content 🔥💯
Your crimping wrong
Great video. Thank you.
You're welcome thank you for watching
Dude I love you no homo ! Great teacher!!!
Thanks my friend
Please Smash the like button and share
The reason you measure volts from r to other terminals is because a meter measures voltage loss. So you don't have 28v between them. R has 28v and y is going to ground. When they are both energized you have zero volts because there is no loss, you have= volts on each
480
Nice video. But when the meter reads "O.L", it's not actually reading "no resistance" it's reading "Open Loop", ie. not enough continuity to measure resistance.
Using the terminology "no resistance" can be misconstrued as a perfectly conducting closed/short circuit.
Maybe instead say "no continuity", or just read it as "Open Loop".
Yes sir that is correct my man breaking it down for the people Love the knowledge thank you for sharing
Next time I will say in honor of my brother Troy it's an open loop Boom
@@TaddyDigest Haha, cheers.
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.
Awesome Tom thank you so much
you rock
I agree awesome video!
Thank you so much
Please let me know what video ideas I can do in the future they would bring really good value
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