How to activate the sprinkler in the hospital

[Inmost Silence]

I'm kinda stucked in the hospital cause I didn't find out how to activate the -already manipulated- sprinkler. Sure, I can do the job with something else, but I wan't to see those sprinklers in action >:)
Any help appreciated :)

[Fear57]

Find a lighter and equip it. If it's the level with the labs in it, I never used the sprinkler system way, I just mixed the chemicals and blew them up.

[FrozenSnowFox]

Apparently setting of an explosion with fire doesn't set of the sprinklers. I did find a lighter I think it was in the other locked Wing which needs the receptionists key. Just having that lit in the room was enough to set it off.

[Inmost Silence]

Thanks, helped a lot. Allthough it's pretty annoying that one can't interact with some flameable fluid if the lighter is equiped but it has to be thrown in the liquid. Those two guys actually burned down even before the acid did it's job :D Epic kill fail :)

[Inmost Silence]

Or you just make a fire with the lighter and some flameable fluid inside the lab