Johnson Controls TCN-890x Installation Instructions Manual page 7

Unoccupied Offset
100%
Output
0%
Unoccupied
Unoccupied Offset
On
Output
Off
Unoccupied
RA Output (Heating)
RA DB
PB
Occupied
RA Output (Heating)
Figure 16: TCN-8901 0 to 10 VDC Control Sequence
DB
RA
DIF
Setpoint
Occupied
Figure 17: TCN-8906 On/Off Control Sequence
TCN-890x Electronic Room Thermostats Installation Instructions
DB DA
PB
Setpoint
Occupied
DA Output (Cooling)
Unoccupied Offset
DB
DA
DIF
Occupied
DA Output (Cooling)
Unoccupied Offset
Temperature
Unoccupied
Temperature
Unoccupied
7