Emerson Liebert CRV User Manual page 168

Table 37 Liebert CRV
Data Label
Fan Speed Proportional Band
Fan Speed
Heating Proportional Band
High Power Shutdown
High Return Humidity Threshold
High Return Humidity
Humidification Proportional Band
Humidifier Control Board Not Detected
Humidifier Cylinder Worn
Humidifier Hours Exceeded
Humidifier Issue
Humidifier Low Water
Humidifier Over Current
Humidifier Under Current
Humidifier Utilization
Humidity Dead Band
Humidity Set Point
Loss of Air Flow
Low Return Humidity Threshold
Low Return Humidity
Maintenance Completed
Maintenance Due
Maintenance Ramp
Master Unit Communication Lost
Operating Efficiency
RAM Battery Issue
Reheat Utilization
Reheater Over Temperature
Remote Sensor Average Temperature
Remote Sensor Function
Remote Sensor Issue
Remote Sensor Maximum Temperature
Remote Sensor Minimum Temperature
Remote Sensor Temperature Calculation
Remote Sensor Temperature
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Liebert CRV
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- Glossary (continued)
Controller Liebert iCOM
Data Description
Temperature control band above the temperature set point calculated for
proportional fan speed control. If measured air temperature is within this
band, fan speed operations are proportionally controlled.
Fan speed expressed as a percentage of the maximum rated speed.
Temperature control band below [Air Temperature Set Point]. If measured
air temperature is within this band, heating operations are proportionally
controlled.
Supply to high power components has been shutdown.
Threshold value used in the [High Return Humidity] event.
Return air high humidity event.
Humidity control band below [Humidity Set Point]. If measured humidity is
within this band, humidification operations are proportionally controlled.
Humidifier control board is required to be connected, but no signal is
detected.
Humidifier cylinder is not operating properly and needs to be replaced.
Operating hours for the humidifier have exceeded the threshold.
Humidifier issue detected, causing it to be locked out.
The water level in the humidifier has dropped below its threshold.
The electrical current to the humidifier has exceeded its upper threshold.
The electrical current to the humidifier has dropped below its lower
threshold.
Present humidifier utilization expressed as a percentage of the maximum
rated capacity.
Value that is divided evenly to form a range above and below [Humidity Set
Point]. If measured humidity is within this range, no humidification or
dehumidification will occur.
Desired relative humidity.
No air flow through the unit due to failure of all fans.
Threshold value used in the [Low Return Humidity] event.
Return air low humidity event.
Maintenance has been completed on the unit.
The calculated maintenance date has been reached.
The ratio of operations performed to the calculated operations available
between maintenance intervals.
Communication with master unit has been lost.
The ratio of cooling energy provided to the amount of total energy being
used.
RAM or RAM backup battery is not operating correctly.
Present reheating utilization expressed as a percentage of the maximum
rated capacity.
The temperature of the reheater has exceeded its threshold.
Average value of remote sensor temperature measurements.
Function assigned to remote sensor. Available values are: (0) Control -
sensor will be used in calculation of remote sensor temperature that may
be used for heating and cooling control, (1) Reference - sensor will not be
used in calculation of remote sensor temperature, but is enabled, (2)
Disable - sensor is disabled
Remote sensor is disconnected or the signal is out of range.
Maximum value of remote sensor temperature measurements.
Minimum value of remote sensor temperature measurements.
Calculation method applied to temperature readings from the remote
sensors to determine a single temperature measurement value for cooling
and heating control.
Air temperature as measured by remote sensor.
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Operation