Even though my grandpa Joe was a plumber, I am puzzled as to how to connect the cooling solenoid to my water supply in the CPP-2. I have a new model, it has a 3/4" screw connection with a built-in filter for the solenoid input behind the control panel and an elbow for the draining connection somewhat below the input. The drain came with a T unit, this confuses me. But my biggest puzzle is the solenoid connection, which only opens up when the unit needs to be cooled, but if I hook up my water supply to it and turn on the water, pressure builds up when the solenoid is closed because there is no outlet for the water. I am obviously missing something simple here. The instructions are not very helpful, at least not to me. Any suggestions?