Emergency And Ventilation Override; Space Setpoint Adjustment; Single Setpoint - Trane Symbio 700 Controller Application Manual

Appendix A

Emergency and Ventilation Override

Table 25. Emergency and ventilation override
2 = EMERG_PRESSURIZE
5 = EMERG_SHUTDOWN

Space Setpoint Adjustment

Zone sensors with an internal or external setpoint adjustment provide the controller with a local setpoint
(50 to 85°F or 10 to 29.4°C). The internal setpoint adjustment is concealed under the zone sensor cover.
To access the setpoint adjustment, remove the zone sensor cover. Some external setpoints (when
present) are displayed on the digital display zone sensor front cover. When the local setpoint adjustment
is used to determine the setpoints, all unit setpoints are calculated based on the local setpoint value, the
configured setpoints, and the active mode of the controller. The controller determines the effective
space setpoint based on the following:
•
•
•
•

Single Setpoint

Heat mode:
•
•
•
Cool mode:
•
•
•
When a building automation system or other controller communicates a setpoint to the controller, the
controller ignores the local setpoint input and uses the communicated value (default operation). The
exception is when the system is in unoccupied mode and the controller always uses the unoccupied
setpoints. After the controller completes all setpoint calculations, the calculated occupied setpoint is
validated against the following configured space setpoint limits:
•
56
Inputs
EOM
Supply Fan
Emergency Override
On/Off
BAS
Request
Point State
3 = EMERG_
DEPRESSURIZE
4 = EMERG_PURGE
6 = EMERG_FIRE
1 = EMERG_NORMAL
Local wired setpoint input
Occupancy mode
Heating or cooling mode (space demand)
Space setpoint high and low limits (configured)
Occupied mode: Space Temperature Setpoint Active = Space Temperature Setpoint (arbitrated) -
Occupied Offset
Occupied standby mode: Space Temperature Setpoint Active = Space Temperature Setpoint
(arbitrated) - Standby Offset
Unoccupied mode: Space Temperature Setpoint Active = Unoccupied Heating Setpoint Cool mode
Occupied mode: Space Temperature Setpoint Active = Space Temperature Setpoint (arbitrated) +
Occupied Offset
Occupied standby mode: Space Temperature Setpoint Active = Space Temperature Setpoint
(arbitrated) + Standby Offset
Unoccupied mode: Space Temperature Setpoint Active = Unoccupied Cooling setpoint
Heating setpoint high limit
EOM
Compres-
Supply Fan
sor Cool
Speed
Stage
Request
Request
%
ON 100
OFF 0
ON 100
OFF 0
OFF 0
Auto Auto
Outputs
EOM EOM
Compres-
Auxiliary
sor Heat
Heat Stage
Stage
Request
Request
Value Value
0 0
0 0
0 0
0 0
0 0
Auto Auto
EOM
Heat Cool
Mode
Status
Value Point
Fan Only
0
Fan Only
0
Fan Only
0
0 OFF
0 OFF
Auto Auto
ACC-APG002A-EN