Roberto, I took your picture and added some edits on to it. This is the best I could be doing at this time. You need to determine which red wire on the transformer goes to your thermostat first of all.
The AC Cooling Wizard
when I do... where do I connect the C wire adapter.
i disconnect the 2 leads doing to the thermostat, and connect the Google Adapter (W and R) between them.
where do I get the C from? any transformer? just one lead?
We must connect a common to the transformer that’s directly connected to your thermostat. That’s why I said we need to figure out which of those transformers your thermostat is wired to. The transformer will have two wires coming in, that’s supplying the 120V AC power and the two wires coming off of the 24V AC going to your thermostat. The Red wire will be connected to one of those two, and it doesn’t matter which one it is, and the common will be the only other one on the output side.
If we logically think about your boiler, any one of the zones can put a call in for heat. Now the thermostats are typically wired primarily to the zone valve or the zone valve control, but when it does, it Hass to also be able to tell the boiler to turn on. In other words, if we need more hot water, the boiler has to be told to turn on and heat up the water. Otherwise it’s inefficient if the boiler is turned on and just left on all the time like a water heater for your house bath water. And we certainly don’t want the boiler to be making hot water for the heating system in the summertime. For this reason, we have some type of a boiler control system, and that boiler control system is single by one of the the thermostats. A more complex control system can’t be designed so that any thermostat connected to a zone area can also turn on the boiler. And the earlier days of life, each winter the owner would have to go down and turn on and light up the boiler. And a border with basically run all winter long, and when he was no longer going to be needed, would go down and turn off the boiler for the spring and summer time. This is very energy inefficient.
the thermostats are normally wired directly to the pump motor relays. Inside for example of that TACO 501, there is a step down transformer, including two terminals labeled “T” one will have the R wire to the thermostat and the other one will have the W wire going to the thermostat. There is also a common inside there that can be attached to it. Also, inside these controllers are separate connections. It go over to the boiler Ignition control system. This is how we can coordinate that any zone turning on can turn on the boiler.
The AC Cooling Wizard
This part you might recognize, it is located below the RED shut off switch. Commonly this is called a Honeywell Fan Controller. In reality it is simply and transformer and control board all in one. Here you can see the R and C terminals and the W G and Y terminals. I enjoy educating consumers, however, if this is proving to be overwhelming, just tell me to stop. - The AC Cooling Wizard
