Carrier WeatherMaster Series - Page 48

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Table 20 – Thermostat Mode
TB1 TERMINAL FIELD CONNECTION INPUT SIGNAL
1 RAT SEN Analog (10k thermistor)
2 G Discrete, 24VAC
3 RAT SEN Analog (10k thermistor)
4 Y1 Discrete, 24VAC
5 — —
6 Y2 Discrete, 24VAC
7 LOOP---PWR Analog, 24VDC
8 W1 Discrete, 24VAC
9 I A Q --- S E N Analog, 4---20mA
10 W2 Discrete, 24VAC
11 I A Q --- C O M / O A Q --- C O M / R H --- C O M Analog, 4 --- 20mA
12 CCN + (RED) Digital, 5VDC
13 O A Q --- S E N / R H --- S E N Analog, 4--- 20mA
14 CCN Gnd (WHT) Digital, 5VDC
15 AUX OUT (Power Exhaust) (Output) Discrete 24VAC
16 CCN --- (BLK) Digital, 5VDC
LEGEND:
CCN --- Carrier Comfort Network (communication bus) RH --- Relative Humidity
G --- Thermostat Fan W1 --- Thermostat Heat Stage 1
IAQ --- Indoor Air Quality (CO
2
) W2 --- Thermostat Heat Stage 2
OAQ --- Outdoor Air Quality (CO
2
) Y1 --- Thermostat Cool Stage 1
RAT --- Return Air Temperature Y2 --- Thermostat Cool Stage 2