The new Aprilaire # 58 automatic humidifier control works in conjunction with your furnace to control the operation of the humidifier. The conrol senses indoor RH and uotdoor temperature and automatically adjusts the operation time of the humidifier to povide the optimum humidity level in the home. The digitial readout on the control displays the RH level inside the cold air return. Can also be used in manual mode when it is not possible to run wire to outdoor sensor.
New lighted display includes indoor relative humidity readout, service indicator light, water panel change light, and "on" indicator light.
NOTE: control must be continously powered for proper functionality - In order for the humidifier to operate, the furnace blower must be running and the humidifier control must be calling for humidity. There are several different ways to detect blower operation - see installation instructions for details.
Automatic Digital Control Features
Shows that the humidifier is operating
Allows you to check relative humidity level
Tells you when it's time to change the water panel
