Aprilaire: Ventilation Control System
May 9, 2003
The Aprilaire Ventilation Control System eliminates uncontrolled ventilation and ensures the correct amount of ventilation for the needs of the home, states the manufacturer. The system consists of a 6-inch damper, controller, and transformer. The system has time-based control with outdoor temperature and indoor relative humidity operating limits. The control opens a damper with a fan or equipment call to meet a desired ventilation requirement that is set by the installer with a knob (0 to 60 minutes) and cycle timing (1, 2, 3, or 4 hours). Once the ventilation need is met, the controller closes.
Aprilaire, P.O. Box 1467, Madison, WI 53701-1467; 608-257-8801; www.aprilairecontractor.com.