C,
Your Power Center needs to be connected to your EasyTouch two ways..
1. The AC power to the Power Center MUST come from the load side of the Pump/Filter relay. This prevents the cell from blowing up if the flow switch fails.
2. The Surge card inside the Power Center has a 4 pin RS-485 com port.. This com port should be connected to the RS-485 com port in your EasyTouch (J20).. You will need your own 4-wire cable to do this... I'd use 18 AWG wire.. Connecting the RS-485 will allow the cell to report the salt level to the EasyTouch, and allow you to control the cell's output % remotely.
Thanks,
Jim R.