Emerson Liebert CRV 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 C R 0 2 0 R A 1 C 7 S D 1 8 1 1 E L 1 0 P A - Manual (Page 112)

Operation
Liebert ® CRV ™ 104
• Humidification (optional)—The humidifier creates steam, which is distributed into the air
stream via the steam distribution pipe. (See also Appendix A - Humidifier). The Liebert CRV’s
humidification is activated when the measured temperature and humidity sensor has been calcu-
lated to exceed the corresponding dew point setpoint. The dew point setpoint is calculated based
on the temperature and humidity of the sensor set to control the control setpoint and relative
humidity.
Example: Temperature Setpoint 72°F / Humidity Setpoint 50% = 52°F Dew Point
NOTE
The Liebert iCOM
® control monitors the condition of the air discharging from the unit to
protect neighboring electronic equipment. Liebert iCOM will prevent the humidifier from
activating if the discharge air is near its saturation point. This protects against discharging fog
from the unit or condensation forming on the unit's supply air baffles. This protection mode is
activated when the supply sensor reading is below 53°F (11.7°C) or above 55% relative
humidity. When this condition is met a message will display showing “humidifier” suspended.
The status of the humidifier lockout can be viewed in the Service/Diagnostics menu.
These protections do not apply to the external humidifier output.