motor using a speed controller or frequency inverter motor actuator for fresh, return and exhaust air dampers totally fresh inlet air units building automation system interface unit mounted fused or non-fused disconnect service switch with external handle to isolate unit from power for servicing electric...
motor using a speed controller or frequency inverter motor actuator for fresh, return and exhaust air dampers totally fresh inlet air units building automation system interface unit mounted fused or non-fused disconnect service switch with external handle to isolate unit from power for servicing electric...