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Point Name/Description
CV Modulating PID – This BACnet object calculates the amount of capacity required to
satisfy the current space temperature setpoint, when the terminal is heating and the
Heat Type is set to CV Modulating.
CAUTION The default values should be changed only by a technician trained in PID
Loop algorithms.
VAV Heating – Set to Enable to have the terminal modulate its airflow to meet a zone
heating demand when the air source mode is Heating or Warm-up. Always set to
Disable for parallel fan terminals.
Number of Heat Stages – The number heat stages when the Heat Type is Staged EH.
Fan-powered terminals are limited to no more than 2 stages.
Valve Type – Two Position hot water only - The hot water valve's position with no power
applied to the valve.
Hardwired Sensor – The type of sensor used on the controller's RH/CO2 hardwire input.
This setting determines the control channel input function.
Options:
RH Sensor – Relative humidity for zone dehumidification
IAQ Sensor – Indoor air quality for DCV control
NOTE RH and IAQ are also available with communicating ZS RH and CO
RH Control – Enables or disables zone dehumidification control if valid RH sensor
values are available.
DCV Control – Enables or disables demand control ventilation control.
Min Setpoint Separation – Minimum separation that must be maintained between the
heating and cooling setpoints.
Occ Override Normal Logic State – The normal state of the controller's Remote
Occupancy input. If the input's contact is the same state as the configured state, the
controller follows its controlling schedule. If the contact is in the opposite state of the
configured state, the controller is forced into the unoccupied mode.
RH Sensor Min Input Volts – The lowest voltage that should be read from the hardwired
relative humidity (RH) sensor.
RH Sensor Max Input Volts – The highest voltage that should be read from the
hardwired RH sensor.
RH Sensor Value @ Min Volts – The % relative humidity that correlates to the hardwired
RH sensor's low voltage reading.
VAV Zone II Controllers
Installation and Start-up Guide
Appendix A: VAV Zone II Points/Properties
sensors.
2
83
Default/Range
D:
Type = reverse
Update Interval = 0:15
P = 20 (40 metric)
I = 1.0 (2.0 metric)
D = 0
Bias = 0
Deadband = 0
D:
Disable
R:
Disable/Enable
D:
Two stages
R:
One stage
Two stages
Three stages
D:
NC
R:
NC/NO (normally
closed/normally open)
D:
None
R:
None
RH Sensor
IAQ Sensor
D:
Disable
R:
Disable/Enable
D:
Disable
R:
Disable/Enable
D:
4 °F (2.2 °C)
R:
2 to 10 °F
(1.1 to 5.5 °C)
D:
Open
R:
Open/Closed
D:
0.00 V
R:
0 to 5.00 V
D:
5.00 V
R:
0 to 5.00 V
D:
0%
R:
0 to 99%
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