38 24v transformer wiring diagram

I just moved into my house and there is an osb-3 steam boiler in the basement. The controls are all 120v except for two wires meant for the thermostat (R and W) After installing the nest thermostat, I noticed my boiler system would "pulse on" for 1-2 seconds and then shut off every say... 30 mins. After researching the issue I've come to the conclusion that the thermostat is charging itself off the connections to the boiler and making it act weird like that. Normally it would charge off the co... Now that I've spent some time breaking down [watt volts, amps, and ohms](https://www.reddit.com/r/ScamHomeWarranty/comments/ld266n/tales_from_trade_school_watt_are_volts_ohms_and/) are, I'll explain the basic makeup of different electrical systems as in how they're put together and what kinds of things are in them. ​ Electrical systems are called circuits. There are two kinds of circuits, there are parallel and series circuits. The first thing you need to know is that the electric...

So I had a reme halo led installed, but I noticed it was on whether the system was on or off. I know the old halo was supposed to be wired this way to preserve bulb life, but the led is not (and it technically voids my warranty). I was looking to fix it myself. Intuitively, I would think to connect it between the green and common outputs of the control board. That way it cuts on when the fan does and uses the existing 24v from the control panel. But the wiring diagram from reme uses a relay....

24v transformer wiring diagram

I installed a nest learning thermostat and every time I turned on the heat it would start for a second and then turn off and would read a 3 minute delay before it would try to do the same thing. The cooling worked fine. When I put back on the old thermostat the issue was resolved. [Old thermostat](https://ibb.co/1f3c92q) [Wiring](https://ibb.co/j89pK0w) I went yellow to y1, white to w1, green to g, and red to Rc. Did I do something wrong or do I need a common wire or what? [SOLVED] Add open wire to the common wire going to the Condenser unit. After writing that out, complete face palm cause that makes so much sense lol, thank you everyone for your help! So I’m installing a Nest thermostat that needs a common wire. My furnace only has 4 wire outputs, but fortunately the wire to the thermostat does have an open C-wire (just not connected to anything). I’ve ordered a 24v transformer that is meant to plug into an AC outlet by the thermostat where one wire connects t... Hello, I have a very old furnace (original to a 1950s home). No A/C. I installed a Nest thermostat (basic no touch screen, just tap the right side). The wiring to the thermostat is only 2 wires: RED and WHITE. The wiring worked fine and the thermostat operated the furnace without any problems, but the thermostat complained it was not getting enough power given there was no "C" (common) wire. Google offered to send me the power connector to help with this issue. I went to install the power...

24v transformer wiring diagram. Hello, I have just upgraded my old-fashion doorbell with a smart one. My wiring looks like that: ​ https://preview.redd.it/i1awg1ftivj61.png?width=2694&format=png&auto=webp&s=c5ec0f85e6eb6aade403c53ef64b2b185ac8f715 As you can see my circuit is 24V and my chime is 16V. Right now it ding-dongs but you can hear the 24v hitting hard and reduce the chimes duration and volume. My Following this guys [advice](https://www.quora.com/Can-you-use-a-24V-transformer-on-a-16V-door... I see on the ring site that I can install a transformer, run a resistor inline and it seems pretty straight forward. I hear it’s not best to run it directly in the wall behind it, like coming off a switch, or Receptacle. How far away should I install the transformer and resistor? Attic plenty of distance in between? Do I HAVE to have a chime? I’m trying not to go the “plug-in” route and tap thru my wall where it’s noticeable when I can fish it all internally in the wall. This is from the we... I have a hot water baseboard system with a Taco SR503-4 controlling three pumps and a boiler. I am changing the thermostat on one of the heat-only zones from a battery powered 2-wire thermostat to an ecobee 3 lite. I've ran a new 18/7 wire from the thermostat to the Taco unit, so that I have plenty of leads to work with. I attached the the Taco's 24v common and that did not power the ecobee. Found this [support page](https://support.ecobee.com/hc/en-us/articles/236335908-Taco-SR503-4-Three-Z... Maybe someone here can help me trouble shoot this further. I've got a dual transformer system - wired up like the top diagram here. [https://support.ecobee.com/s/articles/Installing-your-ecobee-with-a-boiler-and-AC-dual-transformer-system](https://support.ecobee.com/s/articles/Installing-your-ecobee-with-a-boiler-and-AC-dual-transformer-system) My boiler is activated via a simple switch: connect RH and W1 and the radiators get hot. disconnect them and the furnace turns off. On the ecobee se...

Hello I have bought a smart doorbell, and now I want to hardwire it. I have a 24v transformer from Schrader as found [here](https://www.schrack.com/shop/bell-transformer-30va-12-12-24v-bz326578-a.html). However, I am unsure of how it should be wired according to it's wiring diagram. I want to connect 220v to terminal 10 and 12 to get 24v out of terminal 1 and 3, but it seems wrong to me. Could someone please educate me in how it should be correctly wired? I have installed my Unifi Doorbell last week, but one of the challenges was to connect my (old) 8V chime to it. The doorbell self is connected to a 24V 30VA doorbell transformer, so 24V was way too much for the chime to handle. Unable to find a decent 24V chime (at least here in the Netherland), I needed to find another solution for this I have managed to get it working with the use of a 24V relay. The relay is triggered by the Unifi Chime Adapter, closing the 8V circuit for the chime which res... I just moved into my house and there is an osb-3 steam boiler in the basement. The controls are all 120v except for two wires meant for the thermostat (R and W) After installing the nest thermostat, I noticed my boiler system would "pulse on" for 1-2 seconds and then shut off every say... 30 mins. After researching the issue I've come to the conclusion that the thermostat is charging itself off the connections to the boiler and making it act weird like that. Normally it would charge off the co... As the title says, I recently installed an Ecobee3 Lite in my home. My previous thermostat was 2-wire and battery powered. I was able to locate a common terminal inside my boiler and pulled a new 18-4 wire between the boiler wiring and Ecobee. The Ecobee powered up immediately and after setup I thought that I was finished. Unfortunately I now see that the device is rebooting 3-4 times an hour. Below are my pictures: [Previous thermostat wiring (R and W)](https://i.imgur.com/WKn8fFS.jpg) [Non...

Hey all, my gas company was handing out free Nest thermostats, so i snagged one. Knowing my furnace is very old, i also grabbed the C-Wire adapter. i finally got around this morning to setting it up, and, well, i'm fairly certain my furnace doesn't have a 24v connection ANYWHERE on it. The system dates from the 50s. (yes, an HVAC overhaul is on our list of to-dos, we had planned an addition last year, but put it on hold during the pandemic) The only wires connected to the furnace from the the... I'm trying to replace my old double pole 240v Thermostat with a Nest E Smart Thermostat. I'm not positive on the exact setup to get it all hooked up but after doing some research, I was hoping an electrician or someone with extensive electrical experience could confirm my findings. So the current thermostat has 4 wires going into it labeled L1, L2, T1, T2. I've gathered that I need a 240v relay with a 24v transformer which can then be connected to the Nest E for 24v low voltage. I found this r... Hi there! My old home has three entry doorways but never had a doorbell at any of them. Last fall I finally got fed up and completed a project to add new Nest Doorbells to our two most-used entryways (I ran wire, installed a new transformer and wired them both to a new mechanical chime in a central point in my home). It's been great, except for whatever reason now delivery people and friends all love to walk past these two doors and then knock at the only remaining door without a doorbell.... ... I've got a Rheem RGRS series furnace with a 1097-200 control board. It looks like it's failing to apply 24Vac across the Honeywell VR8205S control, so there's no gas to ignite and it shuts down. I replaced the control board with a new one, but am seeing exactly the same thing. I noticed that there's another box for a control board replacement that took place at some point, but unclear when. What should I try next? **edit**: Looks like someone at some point swapped the 24V transformer wires th...

Hello all. I don't normally frequent the Nest reddit. I've been helping out a few people with their Nest installs and I figured I would share the knowledge here as well. The information below is scattered in many different sites and none connect all the dots together. Hopefully, this is a straight forward DIY without lots of searching. First off, I'm not an HVAC pro. I'm just a homeowner who likes to DIY and solve interesting problems. Secondly, I'm not trying to sell anything. What I'm ...

Hello, I have a very old furnace (original to a 1950s home). No A/C. I installed a Nest thermostat (basic no touch screen, just tap the right side). The wiring to the thermostat is only 2 wires: RED and WHITE. The wiring worked fine and the thermostat operated the furnace without any problems, but the thermostat complained it was not getting enough power given there was no "C" (common) wire. Google offered to send me the power connector to help with this issue. I went to install the power...

[SOLVED] Add open wire to the common wire going to the Condenser unit. After writing that out, complete face palm cause that makes so much sense lol, thank you everyone for your help! So I’m installing a Nest thermostat that needs a common wire. My furnace only has 4 wire outputs, but fortunately the wire to the thermostat does have an open C-wire (just not connected to anything). I’ve ordered a 24v transformer that is meant to plug into an AC outlet by the thermostat where one wire connects t...

I installed a nest learning thermostat and every time I turned on the heat it would start for a second and then turn off and would read a 3 minute delay before it would try to do the same thing. The cooling worked fine. When I put back on the old thermostat the issue was resolved. [Old thermostat](https://ibb.co/1f3c92q) [Wiring](https://ibb.co/j89pK0w) I went yellow to y1, white to w1, green to g, and red to Rc. Did I do something wrong or do I need a common wire or what?

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