Originally Posted by StainlessBrewing
I've been wanting to do this same setup for the past month or so with a fridge and wood I have here. Unless I do it at 3:00a.m I don't see that happening anytime soon with this heat. Great job! Does the coil ever get any ice build up on it? Do you have any pictures or information on how you wired up the fan?
No ice build up but I do get some condensation on it. Since I have the fan running while the compressor is on the heat exchanger never gets below freezing. The fan is wired in parallel to the compressor so it is tied to the same neutral that goes to the compressor and the temp controller. The switch leg output from the temp controller goes to both the fan and compressor.
This isn't a great picture but hopefully you can see what's going on.
the wire on the right plugs into the wall the one on the left goes inside where the tube for the heat exchanger goes in. The ground from the wall goes to the plate that the compressor is mounted on. The compressor ground and the ground going into the chamber are also mounted to the plate. The line (black) from the wall goes straight into the inside to the temp controller. The neutral splits and goes to the compressor and into the chamber. The switch leg from the output of the temp controller comes back outside the box with the yellow wire which connects to the other terminal on the compressor.