If the thermostat senses a alter in temperature, it sends a sign on the zone damper, which opens or closes to control the air stream to that zone. بطاقة العربية للطيران بلاتينوم الائتمانية تذكرتك لمزيد من السفر Avert unwelcome airflow and preserve technique effectiveness with our backdraft dampers. These dampers https://aircontroldampersforhotcl34455.bloggazza.com/35523351/air-control-dampers-for-hot-climates-things-to-know-before-you-buy