Operating environment Place the product on a sturdy, level surface in a well-ventilated area that meets the following environmental requirements: temperature: 15 to 32.5 degrees C (59 to 90.5 degrees F) humidity: 20 to 80 percent relative humidity (no condensation) away from direct sunlight, open flames, and ammonia fumes sufficient space around the product to allow for proper access and ventilation, as shown in the figure below: Figure 5. Product dimensions 30 Chapter 2 - Installation and operation EN 439 mm (17.3 inches)