21
Table 18 — Economizer Control Wiring Settings
NO. LABEL TYPE DESCRIPTION
1 + RS485 Modbus A Line A
2 - RS485 Modbus B Line B
3 ¬ GND_ISO Earth Ground
4 MAT Type II NTC 10K or 0-10 vdc Mixed or Discharge Air Temperature Sensor
5 COM COM Mixed or Discharge Air Temperature Sensor Common
6 OAT Type II NTC 10K or 0-10 vdc Outside Air temperature Sensor
7 OAH 0-10 vdc or 4-20mA Outside Air Relative Humidity Sensor
8 COM COM
Outside Air Temperature Sensor or
Outside Air Relative Humidity Sensor Common
9 AUX-AI 0-10 vdc, 2-10 vdc or 0-5 vdc Air Quality Sensor or Pressure Sensor
10 RAT Type II NTC 10K or 0-10 vdc Return Air Temperature Sensor
11 RAH 0-10 vdc or 4-20mA Return Air Relative Humidity Sensor
12 S-COM COM 24 vac Common
13 S-24V 24 vac 24 vac Power out to sensors
14 ACT-FB 2-10 vdc Damper Actuator Feedback
15 ACT2-10 2-10 vdc Damper Actuator Output
16 ACT-COM COM Damper Actuator Output Common
17 ACT-24V 24 vac 24 vac Power out to Damper Actuator
18 AUX2-O 24 vac OUT
Configurable:
• Cooling Stage 3 Output
• Exhaust Fan (1 or 2)
• System Alarm output (Title 24)
19 COM COM 24 vac Common
20 AUX2-1 24 vac IN
Configurable:
• Cooling Stage 3 Input
• Shut Down
• Heat Conventional (W1)
• Heat Pump Changeover (reversing valve OB)
• Preoccupancy
21 AUX1-O 24 vac OUT
Configurable:
• Cooling Stage 3 Output
• Exhaust Fan (1 or 2)
• System Alarm output (Title 24)
22 COM COM 24 vac Common
23 AUX1-I 24 vac IN
Configurable:
• Cooling Stage 3 Input
• Shut Down
• Heat Conventional (W1)
• Heat Pump Changeover (reversing valve OB)
• Preoccupancy
24 OCC 24 vac IN Occupancy input
25 Y2O 24 vac OUT Cooling Stage 2 Output to Stage 2 mechanical cooling
26 Y2I 24 vac IN Cooling Stage 2 input from commercial thermostat
27 Y1O 24 vac OUT Cooling Stage 1 Output to Stage 1 mechanical cooling
28 Y1I 24 vac IN Cooling Stage 1 input from commercial thermostat
29 C COM 24 vac Common
30 R 24 vac 24 vac Power
To Next Page
Loading...
