However there’s a reason why the boiler room is usually locked off in a 30 story building. Bleeding a radiator might be relatively harmless, but there’s no way of knowing what the pressure is supposed to be without knowing the entire system.
Exactly. That’s why either the janitor knows the correct pressure or they need to call a technician. Definitely not something to have hands on oneself in a building that’s not yours.
For the clueless like me:
Whale tail - Wikipedia
Again what learned.