Titus Alpha BAC-8001/BAC-8201 Cooling Only - Manual (Page 20)

Setting up VAV controllers
Setting temperature setpoints
20
Setting
temperature
setpoints
The space temperate setpoints listed in Table 3-1, “Temperature setpoints,” on
page 24 are used to control the controller VAV operation. The temperature
setpoints have default values, but may be manipulated depending on which
type of wall sensor is connected to the controller.
Occupied cooling and heating setpoints These setpoints are user controlled
space setpoints that originate from an attached sensor. If no sensor is attached
the values for these setpoints are manually entered by a controls technician.
Unoccupied cooling and heating setpoints The unoccupied setpoints are
manually entered values to set the heating and cooling temperature when the
space is unoccupied.
Minimum cooling setpoint A manually entered value to limit the occupied
cooling setpoint regardless of the value entered by the user.
Maximum heating setpoint A manually entered value to limit the occupied
heating setpoint regardless of the value entered by the user.
Minimum setpoint differential Sets the minimum temperature separation
between occupied heating and cooling setpoints.
Standby differential This differential is added or subtracted from the occupied
temperature setpoints to calculate the standby setpoints.
SAT changeover temperature Sets the supply air temperature at which the
controller will change from heating to cooling. The changeover takes place when
the supply air temperature is 2° above or below the discharge air temperature
setpoint.
Table 3-1 Temperature setpoints
Object Description Name Default
AV5 Occupied Cooling Setpoint OCC CL STPT 74°F
AV6 Occupied Heating Setpoint OCC HT SPT 70°F
AV7 Unoccupied Cooling Setpoint UNOCC CL STPT 80°F
AV8 Unoccupied Heating Setpt UNOCC HT STPT 64°F
AV9 Minimum Cooling Setpt MIN CL STPT 70°F
AV10 Maximum Heating Setpoint MAX HT STPT 76°F
AV11 Minimum Setpoint Differential MIN STPT DIFF 4°F
AV12 Standby Differential STBY DIFF 3°F
AV37 SAT Changeover Temp SAT CHANGEOVER 75°F