If an independently certificated fire sprinkler installer is contracted to supply an automatic fire sprinkler system, it will have the experience, skill and expertise to ensure that the system components and pipework do not compromise the fire compartmentation of the building.
While some trades may run pipes or cables incorrectly through fire barriers (which allows fires to spread) and which will allow smoke to affect other parts of a building, reputable installers of passive fire protection components have provided advice on how to do this properly: http://asfp.associationhouse.org.uk/default.php?cmd=213