Aprilaire model 62 automatic humidistat w/Outdooor Sensor for model 800 steam humidifier. It includes humidistat, outdoor temperature sensor, installation instructions and owners manual. Any humidifier having a 24 volt AC control system may be retrofitted with an AutoTrac type control system. Because of how sophisticated this technology is, it automatically adjusts the humidity setpoint when the temperature of the outside air changes.
Measuring 5 15/16" W X 4 1/4"" H; this humidistat
mounts on return duct work. Same as the model 60 except it does NOT have a Change Water Panel indicator light. It is designed for steam style humidifiers but will work on any humidifier.
The Model 62 digital humidistat can turn on your HVAC blower when there's no need for humidification or heat. The control will accurately control the humidity in your home based on outdoor tempreature to maintain the maximum confort. It works in conjuction with your heating, ventilating, ait cinditioning equipment (HVAC) to control the operation of the humidifier.
Aprilaire Model 62 Humidistat Wiring Diagram
Manual Versus Automatic Humidistat
The indoor humidity level needs to be set based on the outside temperature. This is to prevent water from running down the windows. The cool air near the windows can not hold the humidity and water will condense on the glass. To prevent this condensation, the indoor humidity level is sacrificed by lowering the humidistat.
An automatic humidistat (
Aprilaire 60) adjusts the humidity by using an outside temperature sensor.
The Aprilaire manual humidistat as used in earlier Aprilaire humidifiers (
Model 4655) requires adjusting the relative humidity based on the outside temperature. A manual humidistat needs to be set back as the season gets colder. The chart below shows the humidity setting for a range of outside temperatures.
When The Outdoor Temperature is | This Relative Humidity Should Be Maintained |
+40°F | 45% |
+30° | 40% |
+20° | 35% |
+10° | 30% |
0° | 25% |
-10° | 20% |
-20° | 15% |