For normal operation, with the alcohol systems in use, the following valves should be set as follows:
For The HMS:
Open - 3, 4, 11, 14; Closed - 12, 13, 17, 18, 19, 20
Unless the gas #3 Mass flow control valve is installed, valve #6 should always be closed.
For the SOS:
Open - 1, 2, 7, 10; Closed - 8, 9, 15, 16, 19, 21.
Unless the gas #3 Mass flow control valve is installed, valve #5 should always be closed.