Wiring inputs and outputs
Unit Ventilator
CARRIER CORPORATION ©2019
Integration Guide
All rights reserved
2
I/O
Type
I/O
Terminal
Gnd
Terminal
Point Name/
Function
Hardware/
Signal
Jumper
Position of
Pins
Zone Temp/
Zone Temp*
AI
Rnet
Gnd
Space Temperature - Prime Variable
Communicating
N/A
RAT or CO
2
Sensor
AI
IN-1
2 - Gnd
Return Air Temperature
Optional IAQ sensor
10K Thermistor
0-5 Vdc
IN-1 Top
IN-1 Bottom
SAT Sensor
AI
IN-2
4 - Gnd
Supply Air Temperature
10K Thermistor
IN-2
Top
OAT Sensor
AI
IN-3
6 - Gnd
Outdoor Air Temperature
10K Thermistor
N/A
Changeover Temp AI
IN-4
8 - Gnd
Changeover switch
Changeover sensor
Dry Contact
Thermistor
N/A
Input Channel #5 BI
IN-5
1 - Gnd
Remote Occ Contact
Fan Status
Dry Contact
N/A
Freezestat
BI
IN-6
1 - Gnd
Low Limit Thermostat
Dry Contact
N/A
OA Damper
AO
AO-1
2 - Gnd
Mixed Air Damper
0-10 Vdc
2-10 Vdc
N/A
Valve / F&B
AO
AO-2
4 - Gnd
Face & Bypass Damper
Heating Valve
2-Pipe H/C Valve
0-10 Vdc
N/A
Cooling Valve
AO
AO-3
6 - Gnd
Cooling Valve
0-10 Vdc
N/A
Fan High Spd
BO
BO-1*
1 - Pwr
High Speed Fan
Stage 2 EH
Relay
N/A
Fan Med Spd
BO
BO-2*
1 - Pwr
Medium Speed Fan
Stage 3 EH)
Relay
N/A
Fan G / Low Spd
BO
BO-3
1 - Pwr
Low Speed Fan
Relay
N/A
BO-4
BO
BO-4*
1 - Pwr
2-Pipe/2-Pos Valve (for equip w/F&B)
2-Pos Heating Valve (for equip
w/F&B)
EH stage 1
Relay
N/A
BO-5
BO
BO-5*
1 - Pwr
2-Pos Cooling Valve (for equip w/F&B)
DX stage 1
EH stage 1 (w/2-Pipe/Electric Heat)
Relay
N/A
Legend
AI
- Analog Input
AO
- Analog Output
BI
- Binary Input
BO
- Binary Output
NOTE
Connect ZS or SPT sensor to the Rnet port.
* These outputs are configurable.
Wiring inputs and outputs
