You will need to set the return and outside actuators to move opposite of each other. For example, if the PEARL outputs 10VDC the outside dampers will be at 100% open and the return damper would be at 100% closed.
If you installed the feedback signal (step 4 above) to the PEARL, you can use the auto-test sequence to verify your dampers are moving correctly. This is explained in the PEARL’s installation guide.
If you do not have the feedback signal, you will want to finish configuring the PEARL through the Pelican App. Then you can turn the Fan to On and the PEARL will open the outside damper to the Minimum Damper Configuration. If you temporarily set the Minimum Damper Configuration to 100%, then the outside damper should go to 100% open and the return damper should go to 100% closed.
During testing if one of the actuators is not moving in the correct direction, the actuator will normally have a toggle on it that allows you to change the direction it is moving.