Showing results 1 - 17 of 17
Image
A fresh air inlet is ducted to the return side of the home’s central air handler; a motorized damper and electronic controls help balance the flow of fresh incoming air with controlled exhaust to meet ventilation requirements
Image
An elevator shaft vent with a motorized damper in a multistory multifamily building provides smoke and hot gas control in an elevator shaft during fire events; during normal operation the damper remains closed to reduce energy loss.
Image
Back-draft damper still has a piece of tape that prevented it from rattling during shipping
Image
Image
Image
Fans from seperate dwellings exhausted together without back-draft dampers and not sealed
Image
Image
Packing tape has been removed and damper will be able to function properly once fan is installed
Image
Right - The butterfly damper of this crawlspace supply register opens when the HVAC fan is running; the damper duct is sealed with mastic and supported by strapping.
Image
Right – This sealed combustion gas furnace has a fresh air intake with an electronically controlled damper.
Image
Separate exhaust fans can share a common exhaust if each exhaust fan is equipped with a back-draft damper to prevent cross contamination
Image
Seperate dwellings with their own seperate exhaust terminations
Image
The back-draft damper on this exhaust fan is closed to prevent cross contamination
Image
The back-draft damper on this exhaust fan is open when the exhaust fan is operating
Image
The back-draft damper open when the fan is actively exhausting and closes when the fan is off
Image
The elevator shaft in this multistory multifamily building has an exhaust fan that maintains a slight negative pressure to control odors; there is also a smoke vent that is dampered closed during normal conditions.
Image
This damper located at the top of a stairwell in a multistory building is automatically kept closed to reduce energy loss; it automatically opens during a smoke event.