S9 AutoSet humidifier as passover?

Can the humidifier on the S9 be 100% turned off and used in passover mode? If so, how?

Passover mode ? So it's Kosher ?

I put the chamber in place ONLY so I can use the ClimateLine® hose. I never fill the chamber with water and never turn on the heater. Simply keep the tubing set for 68 degrees.

Yes it can be done.
Which hose are you using? The ClimateLine heated hose or the non heated hose?
With the non heated hose just set the humidifier setting to 0. That's turns off the heating plate.
With the Climateline heated hose a little more setting changes is needed in the clinical setup menu area so that the default settings of automatic don't kick in.