Wiring The Thermostat, Boiler, and Air Handler
ฝัง
- เผยแพร่เมื่อ 11 ธ.ค. 2018
- In This HVAC Training Video, I show How to Wire The Low Voltage Control Wiring for the Thermostat, Air Handler, and Boiler for Air Conditioning and for Radiant Heat as well as Forced Air Heat. Two different units can be wired to the thermostat when the jumper is removed. Knowing how to wire units will help with Service and Troubleshooting. Supervision is needed by a licensed HVACR Tech while doing this as Experience and Apprenticeship garners Wisdom and Safety.
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Our Related Videos/Articles
• Boiler Aquastat Relay ...
• Wiring a Heat Pump The...
• Wiring a Thermostat, F...
• Boiler Training Class,...
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Our HVACR Educational Books, E-Books, Workbooks, Cards, Posters, and PowerPoints:
All Our Educational Products on Our Site: www.acservicetech.com/store
All Our Educational Products on Amazon: amzn.to/48pDd82
Mini Split Book and E-Book on Our Site- www.acservicetech.com/mini-sp...
Mini Split Paperback on Amazon- amzn.to/3ytHJSs
Mini Split Paperback on TruTech Tools- www.trutechtools.com/BooksGui...
Refrigerant Charging Book and E-Book: www.acservicetech.com/ac-book
Refrigerant Charging Paperback on Amazon: amzn.to/46xTeHf
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Our HVACR Online Resources!
Our HVAC Calculators: www.acservicetech.com/hvac-ca...
Our Newest Articles: www.acservicetech.com/articles
Try our HVAC/R Quizzes! www.acservicetech.com/quizzes
Our Other Resources: www.acservicetech.com/resources
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Tools Used in Our Videos!
Tool Links on Our Site: www.acservicetech.com/tools
Our Tool List on Amazon: www.amazon.com/shop/acservice...
Support the Channel by purchasing tools through TruTech Tools!
Use this link www.trutechtools.com/?aff=8
Save 8% at checkout using code "acservicetech"
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Follow Us On Our Social Media & Podcasting Channels!
Patreon: / acservicetech
Facebook: / acservicetech
Instagram: / acservicetech
X: / acservicetech
LinkedIn: / ac-service-tech-llc
Tiktok: / acservicetech
Spotify: open.spotify.com/show/74KXLz5...
Apple Podcasts: podcasts.apple.com/us/podcast...
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
⚠️ Disclaimer:
Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
#hvacr #hvacr #hvactrainingvideos #hvactraining #hvactraining101 #acservice #acservicetech #wiring #boiler #thermostat #circuitboard #controlboard #hvacproblems #hvacwork #lowvoltage #boiler #airhandler
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Shop through Amazon! Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from all purchases after clicking through. Prices are the same as normal.
![ภาพนี้ก็ฮาเหมือนกันนะเนี้ย #1 SS8 [ พากย์นรก MEME.EXE ] | easy boy](http://i.ytimg.com/vi/Ytc50m91QK8/mqdefault.jpg)
Tool List- www.amazon.com/shop/acservicetech
Support- www.patreon.com/acservicetech
For those that are looking for the tools used in the videos: (Linked Below)
Magnet Jumpers- amzn.to/2PyKPQZ
UEI DL479 Multimeter with temp sensor amzn.to/2jtsUbJ
Alligator Jumpers- amzn.to/2PxqJXn
Fieldpiece ST4 Dual Temp Meter amzn.to/2wc1ME3
Fieldpiece Bead K Type Temp Sensor amzn.to/2DBwKfs
Fieldpiece Wet Bulb Temp Sensor amzn.to/2RRI7Tw
Fieldpiece TC24 Temp Clamp amzn.to/2qHLyjZ
Yellow Jacket Refrigerant Gauge Set amzn.to/2aenwTq
Refrigerant hoses with valves amzn.to/2aBumVI
Yellow Jacket Gauge set & hoses amzn.to/2vLVkV9
Yellow Jacket 4 Port Manifold w Hoses amzn.to/2BkuGIq
FieldpieceSMAN360 Digital Manifold Set amzn.to/2BdoaD4
FieldpieceSMAN460 Digital Manifold Set amzn.to/2nB4Fe6
Compact Ball Valve for Refrigerant Hose amzn.to/2KUisW8
QuickDisconnect 90 for refrigerant hose amzn.to/2MMtVcg
JB 6 CFM Vacuum Pump amzn.to/2nqbvo8
Appion Blue 3/8" to 1/4" Vacuum Hose amzn.to/2uYlVyc
Appion Red 3/8" to 1/4" Vacuum Hose amzn.to/2uYg6Ro
Appion Valve Core Removal Tool amzn.to/2uYr8WL
Yellow Jacket 1/4" by 1/4" hose amzn.to/2umtcod
CPS Vacuum Micron Gauge amzn.to/2v1nM3O
Supco Vacuum Micron Gauge amzn.to/2v1JRiA
RectorSeal Bubble Gas Leak Detector amzn.to/2ckWACn
UEI DL389 Multimeter amzn.to/2xAdaJf
\Air Acetylene Torch setup amzn.to/2aQalsb
15% Silver Brazing Rods amzn.to/2gVLyLc
Nitrogen Regulator amzn.to/2bXdR5f
Nitrogen Flow Meter amzn.to/2brvoBg
Other tool links can be found in the video description section.
Shop through Amazon! Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from all purchases after clicking through. Prices are the same as normal-
www.amazon.com/shop/acservicetech
@AC Service Tech LLC Hi Craig, what about an example if you have a hydronic heating coil on your air handler and you need your air handlers fan to turn on? From what I understand from my setup where red and white is going to your aquastat, it is sending power from the air handler 24VAC power supply to the zone valve of the boiler when the thermostat calls for heat! So would the white from the thermostat be hooked up to both the hot side of the zone valve and white for the fan (from Air Handler) together? right now I have the white from the air handler hooked up to the W1 terminal of my thermostat as I have it set for 2 stage heat making the zone feed the hydronic heating coil then the fan will start with a delay.Which I find ideal for the vents not blowing cold air while the hydronic heating coil is heating up.
Great video helped rewire a thermostat after new unit installed
Everytime I see this video, I realize it never gets old. You are an amazing teacher, may God continue prospering you, thanks Mike
You sir are both a natural technician and a teacher !
Thanks for posting
Thanks a lot Thomas!
AC Service Tech LLC Merry Christmas 🎄
Thank you so much. This is exactly the system I have. It was never installed properly and I bought an ecobee 3 thermostat and a steam humidifier so this should help me out greatly. I will report back tomorrow. My house really needs humidity.
Hello, first comment ever on this platform. This video is older but it answered a question that came up during a service call with and HVAC tech. There was one difference in our setup, the wires from the boiler controller (2) went directly to the handler and the only wire running to the thermostat was the multi wire. The thermostat ran the a/c with the air handler and it also ran the boiler with the air handler. The original thermostat was replaced during a heatwave this past summer when the second floor was like 90 degrees, so the tech did not check the boiler. Cool weather set in and we discovered that the new thermostat was not calling to the boiler controller. The tech told me that it could not have worked before with the existing wiring. That’s where we are now. The original tech (owner of company) is coming out to see if more experienced eyes can figure it out. The diagram in your video is the original setup except the boiler control wire. Any thoughts? Thank you
Very nice . You do a good job on showing the wiring thanks.
Thanks Lance!
That was awesome simple and easy to understand. Thank you.
Thanks a lot Ray Ray!
Day late and a dollar short I wish you made this video last year , I had to figure all that shit buy watching 20 different videos and reading a days worth of forums .......very well done video your gonna make a lot of people happy
Thanks for letting me know you appreciate the video, thanks
Nice one, Craig. You’ll be hitting 100K subs soon!
Ha ha, yeah at some point, thanks Jack!
You are very welcome
Another good video thank you
Thanks ejohnfall!
Great video Craig as always! Hope you don't mind I copied that wire diagram in my note book for in the field. So easy to understand. Thanks.
Glad to help Nick-O!
practical information ...
Thanks Pei Broker!
Thanks, I fixed my new apartments mis-wired thermostat.
Thanks Cory!
Great vid Craig-ster ... Very good description of the components and how they work ... Pay attention young'ens ... Lol ...
Thanks Eddy!
Excellent video just what I’ve been looking for. Do you have any recommendations on what thermostats would work well for this set up? Ty so much
Great video! Trying to add a wifi thermostat to my current boiler, ac, and air handler setup. Older peerless boiler. Cannot seem to figure out how to get a c wire as I don't have a c currently hooked up
Currently have a 5 wire coming in. Hooked to g/y/w/r/rc
Like always nice video and perfect expanation.
I have one question about humidifiers and how to hook up that unit to a furnace with dampers system(ewc). Not sure how to wire so humidification is good in all zones.
Appreciate all your videos and thank you.
Im confused you said that the TV goes to W an the T goes to R. Is that right because everywhere im seeing its the opposite? Or does it matter ?
Thanks a lot for the video. It feels like a lot of HVAC systems have furnaces instead of boilers, so it's great to have this explained like this.
I have a similar system with a boiler and air handler connected to one thermostat. In your video, you have 2 bundles of wires connected to the thermostat- one goes to the boiler circuitry and one to the air handler circuitry. Behind my thermostat, there is only 1 bundle of wires. Both Rc and Rh come from this bundle of wires. Does this bundle of wires run up to the air handler in my attic, or down to the boiler in my garage? Or does it splice off at some point? My understanding is Rc controls the AC and Rh controls the boiler. Don't the wires have to go to 2 different places?
Craig well done as allways
Craig my friends at HVAC department would like to know if you want to join their team they are very impressed with your videos and your expertise.
It reminds me on the song Smooth Operator that is you my friend.
Ha ha thanks for the smooth operator, tell them I appreciate it but I will need to stay the course, thanks!
It's being a long times. I hope evergthing is fine with you and your family as well. I have an oil furnace, soon I'm going to install an Ac coil with condenser unit on top of it. So i want from you some knowledge how to wire the thermostat to call for ac and the fan to kick on...
So the control board doesn't do any processing between the call for cooling and sending the signal to the compressor? Interesting. I'd have thought it'd control that signal--e.g., maybe to delay it to turn on the fan first.
What do you mean “when using a hot water coil in the ductwork an additional strap on aquastst is needed to power g for fan”? From where ?
How can you get the fan to energize when circulator pump is energized. Like, adding a hot water coil to the duct.
Does your book cover boilers, heaters, and AC?
So the aquastat doesn't have a common terminal? Is that typical? I'd have thought it would be capable of operating as a stand-alone system that can power a thermostat.
I have an air handler connected to oil boiler. Zone valve is wired: thermostat->air handler->boiler and I am measuring 24v on the wire coming into the boiler from air handler. When thermosta is on, I get 50v on the zone valve. Something tells me my air handler -> boiler wire needs to be wired directly from t Stat. Else it burns my zone valves
So with it wired like that will the blower come on in the air handler with the boiler pump
I have a question. I have a Hot water coil that I installed in my air handler plenum. How to i get the air handler to come on and the boiler to come on.
I need help wiring a navien combi boiler to a lennox complete heat any advice would be great
Nice good video! If I have my heatpump as my PRIMARY heating and I need to add my Boiler as my BACKUP heating where am I gonna hook my wire coming from my boiler ? I am using baseboard for my boiler, thanks again
@ray S - did you ever get an answer for this? Do you have a good solution?
Can I get run "C" wire from the "C" terminal in the air condition controller board into my wifi thermostat "C" terminal?
Great video. I have a question about my home set up. I have two different thermostats controlling 1 air handler and outdoor compressor. For heat there is a boiler and valves that circulate water through the air handlers. Also depending on which thermostat operates there is a relay board with damper valve controls that open or close for the different zones. One of my thermostats appears to work correctly with heat cool and fan on controls. The other does not operate cool or fan on controls. I swapped thermostats with same results and believe that there is a wiring issue from thermostat to air handler. Will I find two control boards in the air handler or do the thermostats operate the same board but in parallel. The thermostats were wired differently so I wasn't sure how they are typically wired in this configuration.
Thanks for any assistance you can provide.
I have a Boiler for heating and central air for ac.
The system has 3 different wall mounted analog that I can can change the temperature on. Two are up stairs right beside each other one is for heat ( it has R, W hooked up) the other is for AC (is has Rc, G, Y hooked up), the last one down stairs, I think is for AC (has R, W hooked up).
Is there a way to convert this system over to a digital one. I get if only the up stairs thermostats existed it would be easy but that down stairs one has got be scratching my head.
Hi Teacher one question I have a customer who have a heat pump system but he wants to use a straight cool thermostat is there anyway to make it happen
And what if you have that boiler control board, and a wifi thermostat that wants a common wire? I'm thinking I have to add a 24VAC plug in transformer. I tried jumpering the W (TV) to the C on the tstat, but it freaks out and resets itself when turning on the boiler.
Hi i have just 3 wires can i use G wire for C to install wifi thermostat ?
What if I don’t have air conditioning just the furnace?
How can I wire an Ecobee to a steam boiler and air handler? I only have three wires from air handler and two from boiler. Can I use a common maker with an isolation relay, if so where can I find a diagram? Boiler and AH in same room. Thanks.
What if you disconnected the T/Rh wire? I'm concerned that, the way you show it wired, I could switch off the breaker for the air handler and still have an energized neutral on that circuit, because the boiler's circuit is still live. I'm imagining someone shutting off the breaker to the air handler, then disconnecting wires on the control board, and getting zapped when they complete the circuit between C and the C terminal.
Does that not concern you? Am I missing something?
Can I control a boiler and ac with only 4 wires at thermostat ? Customer wants wifi Tstat so I need to keep the common . If it’s possible how is it done ? I know maybe with relays but I can’t seem to figure it out . Any help is much appreciated thank you .
This is great for when the two systems are independent, I can't for the life of me figure out how to have a heating coil in with the air handler and power the fan to start. Any of link to a video by chance?
You can take a 24v from the boiler and power a fan relay in the air handler. On the contacts of the fan relay added to the fan coil, the contacts will have the 24v R power wire and the other contact the g wire. This way, it sends the air handlers 24v power to the g wire any time the control for the boiler sends 24v to the fan relay coil, thanks!
@@acservicetechchannel a friend is replacing his gas package unit and has a Hardy wood stove and water coil in the supply now,Hardy states a heat only thermostat is required along with the standard thermostat and an additional DPDT installed as a fan relay wired between the package unit and water pump on the Hardy,just wondering if it could be accomplished through a single thermostat?
HI! Question: I have a woodmaster outdoor wood boiler as primary heat. I have a fuel oil furnace with the woodmaster heat exchanger installed as secondary. The woodmaster uses the fuel oil furnace blower. I want to be able to set the woodmaster to 72 degrees and the fuel oil to 64 degrees to come on if the woodmaster isn't keeping up. I also have central air as a completely seperate unit with it's own thermostat.
Two installers - one HVAC and one electrician have installed new 'combo' thermostats but neither seems to understand what I am wanting. This system isn't new, I just replaced the fuel oil furnace with a newer model. Before that I had seperate old mercury switch thermostats.
Am I asking for a unicorn here? Is it possible to do this without 'frying the transformers' (last person said that's what would happen)
I watched this video and very much appreciate your teaching style - straight forward!
Hi can you please put link to buy same kind of aquastat.I have hydronic force air heating now but when my thermostat calls for heat it hits the blower and boiler same time because boiler takes time to heat up the water coil I get cold air for about 3-4 minutes.I don’t have any aquastat installed right now.Please let me know if aquastat going to solve that issue.If yes please send me the link for same aquastat you using in this video then I can install it myself.Thanks
So how do you connect a Nest Thermostat to a two wire system?
I have a Boiler Aquastat, with no C wire, so the Thermostat runs on batteries and always looking for more power. Google sent me a Nest Power Connector which is suppose be similar to a C wire. Because I have 2 zones, this will need to be installed at the zone controller, that is the Aquastat right?
Would the wire connections be:
Z = C on the Nest
T = R on the Nest
TV = W on the Nest
Wow I really feel like I'm stupid now.
can i have your email address? i have question about wiring boiler and air handler
Wiring diagram is incorrect on the strap on aquastat, you Goto the g terminal and the rh terminal they way you have it depicted is on the cooling circuit, so the fan wouldn’t be energized unless it was in cooling cycle and the water was above 120 or whatever you set the low to, it has to be jumped with the rh terminal not the rc terminal