- Are the steam "explosions" completely normal?
No, that means you are loosing water or distilled water from the boiler. You need to have a condenser either directly attached to the boiler, or to a steam turbine that is getting steam.
- Is there any benefit to having a higher temperature and hence pressure?
Only if you want superheated steam. 220 bars is the lowest superheated steam needs, any higher is unnecessary. If you just want steam, 0 bars is fine.
- How are the Kinetic Steam Generator and Kinetic Generator aligned?
When you place them, the face that either outputs or inputs kinetic units is the one that faces you when you place it. This can be changed with a wrench.