Wiring Glycol Chiller

[slowsupratt]

So I got a DIY glycol chiller that was controlled by a BCS462. I will be using a stc1000 and was wondering what I needed to change on the current wiring for my setup. Please take a look at the attached picture and I would appreciate any feedback

 

[microbusbrewery]

First, I'm seeing exposed terminals; mount that in a proper enclosure...that's an accident waiting to happen. It looks like the green and yellow wires are the controls. The BCS would have sent a 5VDC signal to trigger the SSRs, essentially switching on power to the pump and chiller. One problem, all the STCs I've seen send a full 110VAC current via their internal relay. If those are low voltage input SSRs (e.g. 6v, 12v, 24v) and you hook them up to 110VAC, it's going to destroy them.