Being that this is purely research on BMWs part for now...

Does this fall under regulatory jurisdiction, for lack of a better term? What are the temps/pressures/power requirements to require regulation? I don't know anything about boiler regs, and where they simply fall off the radar, if ever. Depending on the stats of the system, a case could be made that this is no different or more dangerous than working on an air conditioner- which is regulated, but not overly difficult.

Analagously, low-voltage lighting does not require an electrician's license or permitting to install, but 120v does. Most systems have a cutoff below which regs are trivial, nonexistent, or assumed to be met through ISO-style process management. This is a VERY small steam plant, after all. Something an undergrad would build/operate in thermo lab.

We'll see. All speculation until/unless they make more noise about it.