How to use zvs driver to power tesla coil's primary
You do not want to use a center-tapped primary for a Tesla coil. Just tie the two grounds on the ZVS driver together and you have your high voltage supply between the yellow wire and the two tied grounds. Connect a high voltage rectifier diode to one leg of the output of the transformer, and put your spark gap between the diode and the black wire(s), and then put your capacitor and primary coil in series across the spark gap. That's how you would wire a ZVS driver to a Tesla coil. You may also want to add some high-frequency chokes as shown in the schematic below.

UPDATED EDIT:
I just realized that this device is ONLY the ZVS driver. It does not have a built-in high voltage transformer. You need to connect a flyback transformer of your own (See Image 1). The two outer connections are the switched connections, and the center wire (yellow) is the common, but in this case that does not mean ground. It does actually connect to the inductor (see Image 2).

Image 1:



Image 2: