The following table describes the attributes used by the Occupied Zone Sequencing (VAV) module.
|
Name |
Description |
Default Value |
|---|---|---|
|
Box Heating Control Status |
Value fed back from the box heating controller necessary for the sequencer to determine what actions to take. |
Overridden Set Name: Control Status |
|
Cooling Setpoint |
Desired setpoint for the zone temperature when under cooling control. |
23 °C, 74 °F |
|
Fast Sequence Enabled |
Specifies whether the state machine is allowed to proceed directly to Satisfied on large setpoint changes. |
True |
|
Heating Percent Cmd |
Indicates the current command from the heating controller that operates first. This signal comes directly from the PID in the output controller module. |
0.0 Display Units: % |
|
Heating Priority |
Contains the value that determines whether supplemental or box heat should be the first level of heat.
Note: This is a configuration input. Resulting state changes do not take place until they move through the Satisfied state.
|
Supplemental Set Name: VAV Heating Priority |
|
Heating Setpoint |
Desired zone temperature when under heating control. |
21 °C, 70 °F |
|
Primary Cooling Control Status |
Value fed back from the primary cooling output controller necessary for the sequencer to determine what actions to take. |
Overridden Set Name: Control Status |
|
Setpoint Threshold |
Specifies that setpoint changes larger than this value cause the state machine to proceed directly to the Satisfied state when the temperature is reliable, the Fast Sequence Enabled input is True and the change is associated with making the satisfied temperature band larger. |
1 °C, 2 °F |
|
Supp Heating Control Status |
Value fed back from the supplemental heating controller necessary for the sequencer to determine what actions to take. |
Overridden Set Name: Control Status |
|
ZNT-STATE (State) |
Indicates the current operational mode of the controller. |
Satisfied |
|
Zone Temperature |
Contains the value that is to be compared to the setpoints and is used to determine whether it is necessary to proceed from the satisfied state. |
22 °C, 72 °F |