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Appendix A: VVT Zone Controller Points/Properties
Point Name/Description
Cooling Max Damper Position – The maximum damper position the terminal controls
to when the air source mode is Cooling, Vent, or Free Cooling and the space
requirements for cooling are at a maximum.
Reheat Min Damper Position – For Single Duct units with ducted reheat. Set to the
desired damper position at which the reheat will provide optimum performance. This
value is compared to the Cooling Min Damper Position value, and the greater of the
two values determines the damper position.
Heating Min Damper Position – The minimum damper position the terminal controls
to when the air source mode is Heat and the space requirements are at a minimum.
Heating Max Damper Position – The maximum damper position the terminal controls
to when the air source mode is Heat and the space requirements are at a maximum.
Vent Position – The ventilation damper position the terminal controls to when the air
source mode is Vent and the terminal mode is not in the Heat or Cool mode. If
Linkage is not active, the zone determines vent mode by verifying that its SAT sensor
is between 65°F and 80°F.
Test and Balance – Use the following command buttons when commissioning a zone, balancing the system
replacing the zone controller, or troubleshooting. If
resume normal control.
Calibrated Damper Close – Forces the damper closed so the 0% damper position can be set.
Calibrated Damper Open – Forces the damper to its maximum open position so that the 100% damper position can be
set.
Cool Max – Forces the damper to its cool maximum position regardless of its current local mode.
Cool Min – Forces the damper to its cool minimum position regardless of its current local mode.
Automatic Control – Returns the damper to its normal control routines. This must be activated when you finish using
any of the other Test and Balance commands.
Damper Full Close – Overrides the damper to its full closed position.
Heat Max – Forces the damper to its heat maximum position regardless of its current local mode.
Heat Min – Forces the damper to its heat minimum position regardless of its current local mode.
Reheat Min – Forces the damper to its reheat position regardless of its current local position.
Vent – Forces the damper to its ventilation position regardless of its current local mode.
System Space Temperature – The current value of the controlling space temperature
received over the network from another source. -999 indicates no value has been
received and it will not be used.
System Space RH – The relative humidity received over the network. -999 indicates no
value has been received and it will not be used.
System Space AQ – The indoor air quality received over the network. -999 indicates no
value has been received and it will not be used.
System Cool Demand Level– This value received over the network and used by the
demand limiting function to expand the cooling setpoint.
System Heat Demand Level– This value received over the network and used by the
demand limiting function to expand the heating setpoint.
System Outdoor Air Temperature – The OAT received over the network.
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is not selected within 4 hours, the controller will
Automatic Control
Default/Range
D:
100%
R:
0 to 100%
D:
45%
R:
0 to 100%
D:
20%
R:
0 to 100%
D:
20%
R:
0 to 100%
D:
50%
R:
0 to 100%
(page
36
R:
-50 to 150°F
R:
2 to 100%
R:
300 to 9999 ppm
R:
0 to 3
R:
0 to 3
R:
-50 to 150°F
VVT Zone Controller
),
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