VAV Controller—Variable Air Volume (VAV) Controller 35
Table 8: Series 140/141 Controller
Terminal Description
AI1
Analog Input 1
A COM
Analog Input Common
AI2
Analog Input 2
AI3
Analog Input 3
A COM
Analog Input Common
AI4
Analog Input 4
AI5
Analog Input 5
A COM
Analog Input Common
AI6
Analog Input 6
+15 VDC
+15 Volts DC
+15 VDC
+15 Volts DC
BI1
Binary Input 1
BI COM
Binary Input Common
BI2
Binary Input 2
BI3
Binary Input 3
BI COM
Binary Input Common
BI4
Binary Input 4
BO1
Binary Output 1
24 VAC
24 Volts AC
BO2
Binary Output 2
BO3
Binary Output 3
24 VAC
24 Volts AC
BO4
Binary Output 4
BO5
Binary Output 5
24 VAC
24 Volts AC
BO6
Binary Output 6
BO7/AO1
Binary Output 7/Analog Output 1
24 VAC/A COM
24 Volts AC/Analog Output Common
BO8/AO2
Binary Output 8/Analog Output 2
24 VAC
24 VAC Power–Transformer High Side
COM
Common–Transformer Low Side
Z Bus
Zone Bus
REF
N2 Reference
N2-
N2 Bus -
N2+
N2 Bus +