Titus Alpha BAC-8007/BAC-8207 Dual Duct - Manual (Page 11)

Installing the controller
Connecting inputs
11
Connecting
inputs
The BAC-8007 and BAC-8207 controllers have preconfigured analog inputs to
support the supplied programs. The inputs cannot be changed to binary or
accumulator inputs. Only six inputs have externally available physical
terminals. All of the inputs are preconfigured for the application programs
supplied in the dual-duct controllers and are listed in Table 2-1.
Discharge air temperature Connect a 10k , Type 3 thermistor temperature probe
to the discharge air temperature input. The input includes the internal pull-up
resistor. An STE-1405 sensor is suitable for this application. Follow the
instructions supplied with the sensor for installation. See
Temperature setpoints on
page 26 for setting up discharge air temperature limiting that requires this input
sensor.
Space Temperature Input The space temperature input is connected only
through the RJ-45 thermostat and sensor input jack. It is a configured as an
analog input for STE-6010, STE-6014, and STE-6017 sensors. If an STE-8000
sensor is connected to the controller, this input is ignored. See
Connecting to
sensors on page 18 .
Space Setpoint The space setpoint input is connected only through the RJ-45
thermostat and sensor input jack. It is a configured for the setpoint dials on
STE-6014 or STE-6017 sensors. If an STE-6010 or STE-8000 sensor is connected to
the controller, this input is ignored. See
Connecting to sensors on page 18 .
Table 2-1 BAC-8007 and BAC-8207 input objects
Object Function Name Unit Location Pull up
AI1 Discharge Air Temperature DISCHARGE AIR °F Terminal block 10k
AI2 Space Temperature SPACE SENSOR °F RJ-45 10k
AI3 Space Setpoint SPACE SETPOINT °F RJ-45 10k
AI4 Primary Duct Pressure PRIMARY DUCT wc Internal airflow sensor N/A
AI5 Secondary Duct Pressure SECONDARY DUCT wc Terminal block None
AI6 Secondary Damper Position SECONDARY POS Volts Terminal block 10k
AI7 CO2 CO2 PPM Terminal block None
AI8 Primary Damper Position PRIMARY POS Volts Internal damper position N/A
Illustration 2-3 Discharge air temperature