I’m on my third support guy at this point, and the general consensus seems to be that they’re scratching their heads. I figured I’m sure someone somewhere here has one of these things wired up in a similar fashion (hopefully) and they can give me some pointers where the vendor has miserably failed…
So I’m going to boil this down to avoid confusion…
- I have an oil furnace for heat
- I have central air, with an air handler for the downstairs and another for upstairs (large house)
- I have a Taco 503 zone controller, with 3 zones… zone 1 has priority for a water heater. zone 2 is the second floor thermostats (which work fine) and zone 3 is the downstairs thermostat – where I want to install the ecobee.
- I have 6 wires available, so getting a C wire to power the thing is not an issue.
Because it’s a dual transformer system, ecobee says I have to run the C wire to the air handler common. No problem.
They also said…
- Rc at the thermostat goes to R at the air handler
- W1 at the thermostat goes to W at the air handler
- G at the thermostat goes to G at the air handler
And here is where they’re apparently stumped for some reason. Y1 should go to Y (?)… but there’s no Y. The zone controller lists Y also as C. And with this configuration there would be no wiring going to the zone controller to call for heat.
So that’s basically where I’ve been… through many, many support emails and apparently nobody on their end can figure out this magical setup, which I’m sure is not that difficult, to get the ecobee connected and working properly.