This document is the owner's manual for the Aprilaire 400, 550, 600, and 700 models of automatic humidifiers. The manual includes safety instructions, operating instructions, and warranty information. It emphasizes the use of genuine Aprilaire water panel evaporators for optimal performance and provides information on where to purchase these replacement parts.
The document serves as an owner's guide for Aprilaire evaporative humidifiers, specifically covering Models 400, 550, 600, and 700. It explains the principle of operation based on natural evaporation using a Water Panel evaporator and details how to set up both automatic and manual modes.
| Relative Humidity Range | 10% to 45% |
|---|---|
| Humidifying Capacity | 9 gallons per day |
It should be changed once a year, except for Model 400 which requires changing it twice a heating season.
Condensation indicates that the humidifier setting is too high and needs to be reduced.