It would be interesting to see different flow and valve setups. Elco has his posted in Github.
Here’s how I’ve had mine setup for the last year. I only have my valves setup on manual switches, but hopefully that changes soon. The valves are setup such that all the motorized valves and most of the manual valves are all connected.
For my brew day I usually break it down to the following:
Water Fill - All motorized valves open, all manual valves open or partially closed to control flow. The HERMS coil is not hooked up at this time. The HERMS inlet is just placed into the HLT. My goal is to not only fill my BK and HLT with water, but to prime the pumps as well by back flowing.
Heat Up - Valve 1, valve 3, valve 6 closed. HLT goes to controlled temp. BK is controlled by manual off/on due to limitations in my current controller. I generally aim for 165 degF to 170 degF.
Strike - Valve 4 outlet hose put into MT. Fill MT from BK by turning on pump 2 and opening BK outlet valve. Note: Post strike remaining water is taken to boiling then gravity fed to chillers.
Mash - Pump 2 inlet switched to MT. HERMS hooked up. HLT/MT outlet valves open, both pumps on. Slightly back off on HERMS inlet flow.
Sparge - Valve 2, valve 5 closed, valve 3 opened. Manual valves set to bypass chillers. Control flow with manual valves.
Boil/Chill - Valve 5 closed, valve 6 open. Pump 2 inlet switched to BK. Recirc last 15 minutes. Chill by returning to BK until return temp is acceptable.