100 joints on Canada Day

When it came time to designing a heating and cooling system for our fermenters, we were fortunate to be connected with Kevin who works at the NRC. Whereas I was thinking we would need a chiller to cool the fermenters, Kevin suggested we start by using city water then see what our actual cooling requirements are in production. He designed a series of valves to regulate the flow hot and cold water flowing through the fermenter jackets. The valves were controlled by a Siemens PLC that Kevin programmed.  Using digital thermometers, the PLC can measure he temperature of the fermenter and adjust the electric valves to maintain a set temperature.  Kevin came up with the design but said we should get a plumber to do the piping. Being a decent solderer, I thought I could do it in a couple hours.  Hours quickly became days and I found myself trying to finish the work over the Canada Day weekend.  As I discovered later, my propane torch didn't have the power to heat the 1.5" copper pipes. But I struggled through it and finished the job with a couple leaks (well perhaps more than a couple).