Having worked on Lazy B products, I would agree with eckhard with one possible alteration - Additional Heat/Smoke Clearance. On similar systems, the same additional flow is used for both functions i.e. providing heat in, say, Cold Weather operations and driving smoke out of the Avionics Bay and/or Baggage Bays.
To put a Flight Test spin on the query, on CSeries the Flight Test of the Smoke Clearance procedure was considered too hazardous to be carried out even with artificial smoke. A combination of flow verification in flight and simulation on ground with no actual Flight Control or Avionics units installed was used. The risk of contamination to units and possible loss of function was just too great.