If the pump has a normal plug that goes into an outlet on the chiller, put a temp controller in-between. That is what I do with mine, it is a micromatic. If there is not a plug than you need to splice into the power line to the pump and wire one in.
Then why purchase the FTSS system? You've just eliminated the temp controller and the pump it comes with and are just keeping the coils and lid, really a big waste of money if you ask me. You may as well just get a custom coil made from stainless brewing, a temp controller like a Johnson (or anything similar) and use the glycol chiller and rewire the pump on the glycol chiller to be controlled by the Johnson temp controller. But then again, the pump on the glycol chiller may need to be on at all times to circulate the glycol so it stays evenly chilled.
One other way you could do it and still use the temp controller of the FTSS:
1. Run the pump that is mounted on the glycol chiller continuous where it cycles the glycol through a manifold that loops back to its reservoir.
2. Attach a 12VDC Normally closed motorized valve onto that manifold and connect to the other end to the chilling coils.
The output of the FTSS is 12VDC, now when the FTSS temp controller goes on, rather then turning on it's own water pump, it's opening up the valve on the 12VDC motorized valve allowing cold glycol to flow through the coils. Once the fermenter reaches the predetermined temp set on the FTSS controller, it will turn off the 12VDC supply essentially closing that normally closed valve and cut off chilling to that fermenter.
This was the Glycol is constantly being circulated with it own pump, you don't have to modify the Glycol pump and later on, add more conicals to that chiller by adding more valves to that manifold.
