Uponor Actuator to PLC Wiring

double03

Looking to validate my wiring sanity for my 2 wire actuators on 2 radiant manifolds.

Each actuator has a blue and a brown conductor, and the actuator requires 24V AC.
Im planning to connect the blue wire to the transformer (either "leg" is fine, IIUC). Then connect a wire from the other "leg" on the transformer to a dry contact output on the controller. And then complete the circuit by connecting the common side of the dry contact back to the brown conductor on the actuator.
The thermostat is already connected as an input on the controller, so it would trigger the output based on the thermostat setpoints.
does this make sense, and I assume for multiple actuators on the same manifold I can connect all of the blues and browns together at the manifold per zone, and extend a single cable to the transformer and a single cable per zone to the controller. The transformer and the controller are ~20' from the manifold.

mattmia2

Should be fine, just need to give it 24vac nominal. You might have to start looking at voltage drop in the common wiring, the rating of the relay, and the rating of the control transformer if you are using several.

The actuator is just a heater that heats a slug of wax that expands as it is heated that pushes the valve open.

double03

Thanks for confirming. :-).
As a potential simplification, I think I can also run one wire from the transformer to one output, and then daisy chain between any additional outputs requiring 24V ac (assuming I don't exceed the transformer load). Obviously can only do this on one side, or all outputs would be energized when any one output is triggered.