31-00083—02
6
FLOW TRACKING Temperature control is turned off.
The box maintains a Flow Setpoint
based on the sum of all of the
controllers supplying the zone (the
source controller provides other
controllers with nvoFlowTrack input).
Configuration parameter is box type (Flow_Tracking).
TrackModeOffset (Flow Offset) determines the differential between
the boxes that are the supply air flow and the exhaust air flow.
MANUAL POSITION Box damper is set to manual
position.
Typically is typically triggered during air flow balancing
MANUAL FLOW
Flow is controlled to manual value
Typically is typically triggered during air flow balancing
FREEZE
PROTECTION
Controller is in freeze protection
mode. Heating setpoint is reset to
freeze protection setpoint.
Window is open
EMERGENCY
PRESSURIZE
move the damper to the emergency
pressurize position, Fan disabled
Emergency network command received (nviEmergCmd=1)
EMERGENCY
DEPRESSURIZE
move the damper to the emergency
depressurize position, Fan disabled
Emergency network command received (nviEmergCmd=2)
PURGE
move the damper to the Purge
position, Fan disabled
Emergency network command received (nviEmergCmd=3)
EMERGENCY
COMMAND
SHUTDOWN
Shuts down box
Effective mode is changed via network
HEAT AND COOL
DISABLED
Disables heating and cooling
Effective mode is changed via network
FAN ONLY
Only fan is enabled
Effective mode is changed via network
Table 3. Modes of Operation For CVL Controller
Mode
Description
Events Causing a Controller to Switch to This Mode