I'm considering trying to piece together a propane HERMS system, inspired by the awesome-looking Blichmann Tower of Power. I know there are several well-known electric HERMS guides (e.g. The Electric Brewery and Brutus), but I want to stick with propane for now.
Are there any good build guides? Where should I start?
Topic rims propane-burner homebrew
Category Mac
The original Brutus build is not electric, but natural gas, so that may in fact be a good place to start, especially for seeing how the flame control works (temp controller + pilot and valve.) The write-ups are very good and many have successfully built clones. A new spring is needed on the honeywell valves to convert from natural gas to propane - this blog describes the process.
There are a couple of others pages with propane builds:
2-vessel gas fired HERMS build
This one is nice and simple - just one pump and doesn't require any kind of pilot or valve on the propane burner since the mash is done in a cooler.
This is a single tier system, like the Brutus/Electric Brewery, using PIDs and a honeywell valve to control the flame.
Traditional forums are a good place to start. Often people share pics and advice on how they built theirs.
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