Carrier WEATHERMASTER 48/50Z030-105 User Manual
Page 119
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