Im working on a half electric BIAB RIMS system. I plan to use my propane burner to get my keggle up to dough-in temp, proceed to dough in, then power up my home built RIMS tube with PID to maintain the mash temp in the keggle. After I begin the mash, the propane will remain off until the mash is over. I will use propane after the mash for the boil as I dont have enough power available to power the elements required for a boil. The keggle drops temperature quickly especially with 5 gallon batches because of all the surface area, not to mention the weather outside.
Will doing this confuse my PID? Should I let the PID handle getting the temp up to mash-in? From what I understand these things calculate how long it takes for the temp to reach its target, and continually learns from it. If I start the water out at a high temp before kicking on the PID, will it think it needs to work less hard to maintain the temp, and having my mash temp suffer as a result?
Thanks for the help.