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Table 102 — Field Terminal Connections
LEGEND
BOARD NO. TERMINAL NO. DESCRIPTION TYPE
TB-1 - POWER CONNECTION OR DISCONNECT (in Power Box)
11 L1 power supply 460/575-3-60
TB1 12 L2 power supply 460/575-3-60
13 L3 power supply 460/575-3-60
GROUND (in Power Box)
Ground 1 Equipment Ground
TB201 - FIELD CONNECTIONS (in Control Box)
TB201
1 Smoke Detector Alarm Input external contact (maximum 24 vac, 3 A)
2 Smoke Detector Alarm Input external contact (maximum 24 vac, 3 A)
3 Remote Occupied/Economizer Enable 24 vac out 24 VAC Output
4 Remote Occupied/Economizer Enable 24 vac in 24 VAC Input
5 Outdoor Enthalpy Switch 24 VAC out 24 VAC Output
6 Outdoor Enthalpy Switch 24 VAC in 24 VAC Input
7
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
8
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
9 VAV Heater Interlock Relay Contact (maximum 24 vac, 3 A)
10 VAV Heater Interlock Relay Contact (maximum 24 vac, 3 A)
R 24 VAC Power 24 VAC Output
Y1 Thermostat Y1 (1st stage cool) 24 VAC Input
Y2 Thermostat Y2 (2nd stage cool) 24 VAC Input
W1 Thermostat W1 (1st stage heat) 24 VAC Input
W2 Thermostat W2 (2nd stage heat) 24 VAC Input
G Thermostat G (Fan) 24 VAC Input
C 24 VAC Common 24 VAC Output
X Alarm Output (NO) 24 VAC Output
FS1 Fire Shut Down external contact (maximum 24 vac, 3 A)
FS2 Fire Shut Down external contact (maximum 24 vac, 3 A)
T55-1 Space Sensor TH Thermistor Input
T55-2 Space Sensor COM Thermistor Input
T55-3 Space Sensor Offset Switch Thermistor Input
(+) CCN + Communication
(COM) CCN Common Communication
(-) CCN - Communication
SHIELD Ground Ground
LEN Local Equipment Network Communication
CCN Carrier Comfort Network Communication
TB202 - FIELD CONNECTIONS CEM (in Main Control Box)
TB202
1 Not Used —
2 Not Used —
3 Space Humidity 4-20 mA (-) 4 - 20 mA signal
4 Space Humidity 4-20 mA (+) 4 - 20 mA loop power
5 Ground Ground
6 Outdoor Air IAQ 4-20 mA (-) 4 - 20 mA signal
7 Outdoor Air IAQ 4-20 mA (+) 4 - 20 mA loop power
8 Supply Air Reset 4-20 mA (-) 4 - 20 mA signal
9 Supply Air Reset 4-20 mA (+) 4 - 20 mA loop power
10 Demand Limit 4-20 mA (-) 4 - 20 mA signal
11 Demand Limit 4-20 mA (+) 4 - 20 mA loop power
12 IAQ Switch 24 VAC in external contact (maximum 24 vac, 3 A)
13 IAQ Switch 24 VAC out external contact (maximum 24 vac, 3 A)
14 Fire Smoke Purge 24 VAC in external contact (maximum 24 vac, 3 A)
15 Fire Smoke Purge 24 VAC out external contact (maximum 24 vac, 3 A)
16 Fire Evacuation 24 VAC in external contact (maximum 24 vac, 3 A)
17 Fire Evacuation 24 VAC out external contact (maximum 24 vac, 3 A)
18 Fire Pressurization 24 VAC in external contact (maximum 24 vac, 3 A)
19 Fire Pressurization 24 VAC out external contact (maximum 24 vac, 3 A)
20 Demand Limit Loadshed 24 VAC in external contact (maximum 24 vac, 3 A)
21 Demand Limit Loadshed 24 VAC out external contact (maximum 24 vac, 3 A)
22 Demand Limit Redline 24 VAC in external contact (maximum 24 vac, 3 A)
23 Demand Limit Redline 24 VAC out external contact (maximum 24 vac, 3 A)
24 Humidistat external contact (maximum 24 vac, 3 A)
25 Humidistat external contact (maximum 24 vac, 3 A)
TB203 - FIELD CONNECTIONS CEM (in Main Control Box)
TB203
1 Filter Pressure Switch/Sensor - Return (+) 4 20 mA loop when used with 180 Ohm resistor
2 Filter Pressure Switch/Sensor - Return (-) 4 20 mA signal when used with 180 Ohm resistor
3 Filter Pressure Switch/Sensor - Supply (+) 4 20 mA loop when used with 180 Ohm resistor
4 Filter Pressure Switch/Sensor - Supply (-) 4 20 mA signal when used with 180 Ohm resistor
5 Filter Pressure Sensor - Return (+24 VDC) 4 20 mA loop power
6 Filter Pressure Sensor - Supply (+24 VDC) 4 20 mA loop power
7 Mixed Air Humidity Sensor (+24 VDC) 4 20 mA loop power
8 Mixed Air Humidity Sensor (-) 4 20 mA signal
— Humidifier Output Contact (maximum 24 vac, 3 A) Violet Wire/Spade Terminal
— Humidifier Output Contact (maximum 24 vac, 3 A) Violet Wire/Spade Terminal
IAQ — Indoor Air Quality
VAV — Variable Air Volume
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