This manual introduces safety and maintenance instructions for models 110, 112, 220, 224, 350, 360, 440, 445, 448, 558, 560, 568, 760 and 768 humidifiers.
This manual provides safety instructions, operating procedures, and maintenance guidelines for Aprilaire whole house humidifiers. It explains the evaporative principle of operation and details how to adjust the humidifier control for automatic or manual modes to maintain desired relative humidity levels.
| Maximum Relative Humidity | 45% RH |
|---|---|
| Minimum Relative Humidity | 10% RH |
| Water Flow Regulation | Orifice included |
For every 1°F change in outdoor temperature, the control automatically adjusts the indoor relative humidity by 1/2%.
Reduce the setting on the control dial by 1 increment.
It should be changed annually to assure high capacity trouble-free performance.