more San-t--flush questions

[hasiukdk]

I have a 2019 29bhswe and it has the San-t-flush.
1. Should I keep the pressure regulator (40-50 psi) on the waterline when using san-t-flush? Is more pressure better?

2. Several mentions in this forum of using san-t-flush while black tank valve is closed. My unit has a sticker explicitly stating "do not use" unless valve is fully open. There is also a printed warning on the san-t-flush spigot. What's up?


Also, can someone combine higher pressure with open black tank valve? Or some other workable combo?


Thanks!