In Florida, new installations or alterations that affect the required hoistway ventilation, require hoist way vents that have motorized louvres. Notice I did not say smoke dampers. The motorized vents are required by florida building code energy conservation section to prevent loss of air conditioned air through the hoistway. Therefore, like silly said, they are nor,ally closed. Open on fir alarm or loss of power.
Getting a permit for a motorized vent is ten times easier than for the same thing if you label it a smoke damper. An many city bldg depts minds are blown when you discuss this. And as for control...it is opened by any elevator related initiating device, or it it can have its own. Has nothing to do with elevator company relays.
