Thank you shocksofmighty!
I found the post by keyboardwarrior that explains how to do it:
The instructions were a bit confusing...I thought maybe he was trying to say I should enter the command and put the temp values in brackets. For any future onlookers, my script looks like this:
G28 ; home all axes
G32 ; Auto Calibrate
M500 ; create config-override
M106 S0 ; fan speed
M140 S90 ; bed temp
M190 S90 ; wait for bed temp
M104 S240 T0 ; nozzle temp
M109 S240 T0 ; wait for nozzle temp
I am slightly disappointed that the Gcode results in these strange 3 lines in place of where the original heat commands would go:
My printer gives me a msg error, but at least it still continues to print.