Scott, I've got a Mercedes Service Library CD for the model 107 that covers HVAC, chassis, engine, electrical and owner's manual for all 107 from 450SL through 560SL, and it does indeed cover the system on your car. Email me if yours doesn't.
'97 SL500, 40th anniversary edition
'04 Olds Bravada (SWMBO's)
'06 Lexus ES330
'89 560SL (sold)
SL--Anything else is just a Mercedes.
(Kudos to whoever said it first)