Most building codes require a certain amount of fresh air be introduced into the interior space. Use of fresh air dampers on HVAC equipment is an inexpensive way to allow fresh air into the building. McDaniel metals offers both a manual and motorized fresh air damper to fi t Goodman light commercial packaged equipment. The manual fresh air damper is installed and fi xed in place to allow a certain amount of fresh air to circulate at all times. The motorized fresh air damper includes a small two position actuator that opens the damper when the indoor blower is running and closes the damper when the blower turns off.
This damper is engineered to provide 25% manual damping to large chassis Goodman package units. It is compatible with all GPG series, 2-5 ton capacity, large chassis Goodman equipment.