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63
APPENDIX B
—
09FC FREE COOLING MODULE CONTROLLER
The following tables describe all of the possible settings for your
controller on the i-Vu
®
or Field Assistant Properties tab.
NOTE: Some of the properties are available only when other set
-
tings have been enabled. See Table 8 for the points and properties
available on the touchscreen interface.
NOTE: Engineering units shown in this document in the defaults
and ranges are strictly for reference. You must enter an integer
only.
Status
Navigation: i-Vu
®
/ Field Assistant: Properties
Control
Program
Status
Unit Configuration
Navigation: i-Vu
®
/ Field Assistant: Properties > Control Program
> Configuration > Unit Configuration
Point Name – Description
Default/Range
Run Command
– The module’s current run command.
R: Stop/Run
Operating Mode
– The module's current operating mode.
R: Bypass/Free Cool
Equipment Alarm
– Indicates the controller has an active alarm. See
Service Configuration
for causes. R: Normal/Alarm
Leaving Water Temp Setpoint
– Displays the leaving water temperature's effective setpoint used to
control the module fans.
R: 15 to 75°F
Outdoor Air Temperature
– Displays the outdoor air temperature used for control.
R: -56 to 245°F
Valve Position
– Displays the current position of the module’s bypass valve. This value is associated with
the floating motor output.
R: Close/Open
Bypass Valve Position
– Displays the current position of the module’s bypass valve. This value is
associated with the analog output.
R: 0 to 100%
Fan VFD Enable
– Displays the current command of the module fans’ variable frequency drive.
R: Stop/Start
Fan VFD Speed
– Displays the current speed of the module’s fans.
R: 0 to 100%
Shutdown
– When
Active
, provides a means to stop the module in an orderly manner. All alarms are
reset and current active alarms are displayed.
D: Inactive
R: Inactive/Active
Point Name – Description
Default/Range
Cool Enable
– Enables or disables cooling operation.
D: Enable
R: Disable/Enable
Lvg Wtr Temp Setpoint OA Reset
– Enables OA reset of the leaving water temperature's setpoint.
D: Disable
R: Disable/Enable
OAT LWT Setpoint Reset Low Limit
– The lowest outdoor air temperature which resets the leaving
water temperature.
D: 70°F
R: __°F
OAT LWT Setpoint Reset High Limit
– The highest outdoor air temperature which resets the leaving
water temperature.
D: 90°F
R: __°F
Maximum LWT Setpoint OA Reset
– The highest leaving water temperature setpoint reset allowed by
the outdoor air temperature.
D: 10°F
R: 0 to 25°F
Power Fail Restart Delay
– The amount of time the controller delays normal operation after the power is
restored.
D: 20 seconds
R: 0 to 600 seconds
Occupancy Schedules
– Enables or disables the occupancy schedule function.
D: Disable
R: Disable/Enable
Sensor Calibration
Leaving Water Temperature
– The current leaving water temperature.
R: -56 to 245°F
Leaving Water Temp Sensor Calibration
– A calibration offset value that allows for adjusting the local
leaving water temperature sensor to match a calibrated standard that is measuring the temperature in the
same location.
D: 0°F
R: -10 to 10°F
Entering Water Temperature
– The current leaving water temperature.
R: -56 to 245°F
Entering Water Temp Sensor Calibration
– A calibration offset value that allows for adjusting the local
entering water temperature sensor to match a calibrated standard that is measuring the temperature in the
same location.
D: 0°F
R: -10 to 10°F
Outdoor Air Temperature
– The current outdoor air temperature.
R: -56 to 245°F
Outdoor Air Temp Sensor Calibration
– A calibration offset value that allows for adjusting the local
outdoor air temperature sensor to match a calibrated standard that is measuring the temperature in the
same location.
D: 0°F
R: -10 to 10°F
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