86VCCX2 Controller Technical Guide
APPENDIX C: BACNET GUIDE
Binary Inputs
VCCX2 BINARY INPUTS
Parameter Object Description
Cooling Enabled Status BI: 1 Status that indicates Mechanical Cooling is enabled based on the Cooling Lockout
Heating Enabled Status BI: 2 Status that indicates that Mechanical Heating is enabled based on the Heating Lockout
Economizer Enabled Status BI: 3 Status that indicates the Economizer is enabled based on the Economizer Enable Setpoint
Aux Heat Enabled Status BI: 4 Heat Pump Auxiliary Heat enabled
Emergency Heat Enabled Status BI: 5 Shows the Emergency Heat is enabled based on the Compressor Heating Lockout
Fan Proof of Airow Status BI: 6 Proof of Airow Binary Input Status
Exhaust Hood On/O Status BI: 7 Exhaust Hood On/O Binary Input Status
Remote Forced Occupied Status BI: 8 Remote Forced Occupied Mode Binary Input Status
Remote Forced Cooling Status BI: 9 Remote Forced Cooling Mode Binary Input Status
Remote Forced Heating Status BI: 10 Remote Forced Heating Mode Binary Input Status
Remote Force Dehum Status BI: 11 Remote Force Dehumidication Mode Binary Input Status
Bad Supply Air Sensor BI: 12 Alarm that indicates a failure of the Supply Air Sensor
Bad Return Air Sensor BI: 13 Alarm that indicates a failure of the Return Air Sensor
Bad Outdoor Air Sensor BI: 14 Failure of the Outdoor Air Temperature Sensor
Bad Space Temp Sensor BI: 15 Failure of the Space Temperature Sensor. If Space is the controlling sensor, the unit shuts
down.
Bad Carbon Dioxide Sensor BI: 16 Failure of the CO2 Sensor
Bad Building Pressure Sensor BI: 17 Alarm indicating missing or failed Building Pressure Sensor
Bad Outdoor Airow Sensor BI: 18 An Outdoor Airow Sensor is congured, but not detected
Bad Exhaust Airow Sensor BI: 19 An Exhaust Airow Sensor is congured, but not detected
Bad Supply Airow Sensor BI: 20 A Supply Airow Sensor is congured, but not detected
Bad Return Airow Sensor BI: 21 A Return Airow Sensor is congured, but not detected
Mechanical Cooling Alarm BI: 22 Compressor Relays are enabled but the Supply Air Temperature has not fallen 5°F w/in a
user-adjustable time period. This does not apply to Modulating Cooling.
Mechanical Heating Alarm BI: 23 Heating Mode has been initiated but the Supply Air Temperature has not risen 5°F w/in a
user-adjustable time period. Alarms on the MODGAS-X and Preheat-X Controller generate
this alarm. This alarm does not apply to SCR Heat, Modulating Hot Water or Steam Heating.
Fan Proving Alarm BI: 24 Alarm that indicates an Airow failure from the Main Fan. Heating and Cooling are disabled.
Dirty Filter Alarm BI: 25 Alarm that indicates the lters are dirty
Emergency Shutdown Alarm BI: 26 Alarm that indicates that Emergency Shutdown has been activated. Shuts the unit down.
Relay Runtime Warning BI: 27 Indicates when any of the congured relays exceeds a congured number of hours of
runtime. Can be used to schedule service, etc.
Economizer Missing Alarm BI: 28 Title 24 operation indicates missing economizer feedback
Economizer Title 24 Failure A BI: 29 Title 24 Air Temperature Sensor Failure
Economizer Title 24 Failure B BI: 30 Title 24 Not Economizing when it should
Economizer Title 24 Failure C BI: 31 Title 24 Economizing when it should not
Economizer Title 24 Failure D BI: 32 Title 24 Damper Not Modulating
Economizer Title 24 Failure E BI: 33 Title 24 Excess Outdoor Air
High Supply Temp Cuto BI: 34 The Supply Air has risen above the Hi SAT Cuto Setpoint. Heating stages deactivate and
the fan continues to run. This alarm is generated.
Low Supply Temp Cuto BI: 35 The Supply Air has fallen below the Low SAT Cuto Setpoint. Cooling stages deactivate.
After 10 minutes, the fan deactivates and this alarm is generated.
High Control Mode Alarm BI: 36 Occurs when the Controlling Sensor Temperature rises above the Cooling Mode Enable
Setpoint plus the Control Mode High Alarm Oset. Applies only to Space or Return Air
Temperature controlled units.
Objects labeled BI are read-only.
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