Once the thermostat senses a change in temperature, it sends a sign on the zone damper, which opens or closes to regulate the air circulation to that zone. THIS column gives information regarding the usage of outside air dampers in very hot and humid climates and during very hot and https://aircontroldampersforengin24566.daneblogger.com/35615502/air-control-dampers-for-engine-sheds-an-overview