Residential, Townhouse / Condominium Sprinkler contains fire to one unit in condominium complex (Conshohocken, PA) April 5, 2014 viking210 A fire sprinkler activated in the unit of a condominium complex following a fire that began in the fourth floor residence. The sprinkler kept the fire from spreading to any other unit, and firefighters put out the last of the flames. Residents were able to evacuate safely, and the cause of the fire remains under investigation.