I've decided to build a son of fermentation chiller, but I have very little knowledge of the electronics involved. The directions say to use an analog thermostat because they're 12 VDC whereas the digital ones are 24 VAC.
Is the need for the 12 VDC just because the fan needs 12 VDC to work properly? I don't really understand whether the thermostat provides power for the fan or if it just tells the fan to turn on. It would seem to me that a digital thermostat would be more convenient because it shows what it is set to.
My reference:
http://home.elp.rr.com/brewbeer/chiller/chiller.PDF
Is the need for the 12 VDC just because the fan needs 12 VDC to work properly? I don't really understand whether the thermostat provides power for the fan or if it just tells the fan to turn on. It would seem to me that a digital thermostat would be more convenient because it shows what it is set to.
My reference:
http://home.elp.rr.com/brewbeer/chiller/chiller.PDF