A glycol chiller is the heart of a glycol system. It is a refrigeration system which is used for cooling a tub or bath of an antifreeze. This liquid is pumped through a looped circuit of tubing which is linked to the input and output of the glycol chiller. It is your cooling line. For every utensil, you want to be cooled like the heat exchanger to the inlet and outlet legs of the cooling line. Once it is connected, now glycol will move through the heat-exchanger and cool the vessel. bit.ly/2gQxNOH