A couple sources that might help...
There is a Pilot 34 Manual in the TF Library that can be downloaded - it may/may not be similar I can't confirm.
Here is a link to a Charter Pilot 30 that might help
It does include "The TOILET THRU-HULL is located under the companionway step if you need to shut off the water to the
toilet. Clean the toilet as necessary"
I believe some of the 34P's had a Vac-U-Flush that used fresh water vs sea water. Again I don't know the specifics.
Hope that helps
If you do find a 30P Manual please consider posting it to the TF Library for others to access.
Also - please confirm what you eventually find out here