Carrier 48/50Z030-105 Table 92 Field Terminal Connections

119
Table 92 — Field Terminal Connections
LEGEND
BOARD
NO.
TERMINAL
NUMBER DESCRIPTION TYPE
TB-1 - POWER CONNECTION OR DISCONNECT (in Main Control Box)
11 L1 power supply 208-230/460/575/380/-3-60, 400-3-50
TB1 12 L2 power supply 208-230/460/575/380/-3-60, 400-3-50
13 L3 power supply 208-230/460/575/380/-3-60, 400-3-50
NEUTRAL (in Main Control Box)
Neutral 1 Neutral Power
CCN COMMUNICATIONS (in Main Control Box)
Comm Port
1 LEN + 5 vdc, logic
2 LEN C 5 vdc, logic
3 LEN – 5 vdc, logic
4 24 vac 24 vac
5 CCN + 5 vdc, logic
7 CCN c 5 vdc, logic
7 CCN – 5 vdc, logic
8 Grd ground
TB201 - FIELD CONNECTIONS (in Main Control Box)
TB201
1 Remote Occupied/Economizer Enable 24 vac out external contact (maximum 24 vac, 3 A)
2 Remote Occupied/Economizer Enable 24 vac in external contact (maximum 24 vac, 3 A)
3 Not Used —
4 OD Enthalpy Switch in 24 vac
5 Fire Shut Down external contact (maximum 24 vac, 3 A)
6 Fire Shut Down external contact (maximum 24 vac, 3 A)
7 VAV Heater Interlock Relay external contact (maximum 24 vac, 3 A)
8 VAV Heater Interlock Relay external contact (maximum 24 vac, 3 A)
9 Humidifier Output, Ground external contact (maximum 24 vac, 3 A)
10 Humidifier Output, 24 VAC external contact (maximum 24 vac, 3 A)
11 Unit Alarm Output external contact (maximum 24 vac, 3 A)
12 Unit Alarm Output external contact (maximum 24 vac, 3 A)
13 Smoke Detector Alarm Input external contact (maximum 24 vac, 3 A)
14 Smoke Detector Alarm Input external contact (maximum 24 vac, 3 A)
15 Not Used —
16 Not Used —
TB202 - THERMOSTAT CONNECTIONS (in Main Control Box)
TB202
1 Thermostat R 24 vac output
2 Thermostat G 24 vac input
3 Thermostat W2 24 vac input
4 Thermostat W1 24 vac input
5 Thermostat Y2 24 vac input
6 Thermostat Y1 24 vac input
7 Not Used —
8 Space Sensor TH Thermistor input
9 Space Sensor COM Thermistor input
10 Space Sensor Offset SW Thermistor input
11 Indoor Air IAQ Remote Sensor/Remote
Pot/Remote 4-20 mA
Thermistor input or externally powered 4 to 20 mA when used with
180 ohm resistor
12 Indoor Air IAQ Remote Sensor/Remote
Pot/Remote 4-20 mA
Thermistor input or externally powered 4 to 20 mA when used with
180 ohm resistor
13 Not Used
14 Not Used
15 Not Used
16 Not Used
TB203 - FIELD CONNECTIONS (in Main Control Box)
TB203
1 Ground ground
2 Demand Limit 4-20 mA (+) 4 to 20 mA loop power
3 Demand Limit 4-20 mA (-) 4 to 20 mA loop power
4 Supply Air Reset 4-20 mA (+) 4 to 20 mA loop power
5 Supply Air Reset 4-20 mA (-) 4 to 20 mA signal
6 Outdoor Air IAQ 4-20 mA (+) 4 to 20 mA loop power
7 Outdoor Air IAQ 4-20 mA (-) 4 to 20 mA signal
8 Space Humidity 4-20 mA (+) 4 to 20 mA loop power
9 Space Humidity 4-20 mA (-) 4 to 20 mA signal
10 Not Used —
11 Not Used —
12 Not Used —
13 Not Used —
14 Not Used —
15 Not Used —
16 Not Used —
IAQ — Indoor Air Quality
VAV — Variable Air Volume