I am trying to properly connect the condensing loop in one of my projects and I am having some trouble.

Right now I have 3 cooling towers, 3 pumps and a chiller. What I would like is 2 systems, supply and return. However, the way I have it piped up, I need to use 3 systems. One supply system from the cooling tower to the pump. One supply system from the pump to the chiller. Finally, one return system from the chiller to the cooling tower.

The supply connector on the cooling towers are Preset Out. The Intake on the pumps are System type: global, flow configuration system, and flow direction In. The discharge on the pump is System type: global, flow configuration system, and flow direction out. Finally the supply on the chiller is Calculated In.

The return on the chiller is Preset Out. The return on the cooling tower is Preset In.

I am not sure if this configuration is correct and I am not sure what I should use as equipment in the system. Any suggestions??