Humidity Control - Vertiv Liebert iCOM Installer/User Manual

Humidity Setpoint
Humidity level by adding moisture to or removing moisture from the air.
Humidity Setpoint 2
Alternate setpoint activated by customer input (remote-alarm device/RAD). When customer input
connection = 2nd Setpoint, this value becomes the active humidity setpoint.

3.1.6 Humidity Control

Humidity control refers to the cooling unit's response to programmed setpoints and sensed humidity
conditions.
iCOM controls humidity based on temperature and humidity sensor readings. The requirement is
expressed as a percentage (%) and is calculated using the selected humidity-control type.
Humidity proportional band
Use the proportional and dead-band parameters to control how your cooling unit(s) respond based on
the calculated need for humidification/dehumidification. As the return-air humidity deviates from the
humidity setpoint, iCOM responds with a humidification or dehumidification capacity of 0% to 100% in
1% increments.
Vertiv | Liebert® iCOM™ Installer/User Guide | 39