161
Table 75. P271 Heating 1 Safety
Pin # Label Description Type
1 S10-C PRIMARY LIMIT BURNER 1C
SW 24VAC
2 S10-NC PRIMARY LIMIT BURNER 1 NC
3 S10-NO PRIMARY
4 S21-C SECONDARY LIMIT BURNER 1C
SW 24VAC
5 S21-NC SECONDARY LIMIT BURNER 1 NC
6 S47 ROLL OUT SWITCH BURNER 1
SW 24VAC
7 S47 ROLL OUT SWITCH BURNER 1
8 S18 CAB PROOF SWITCH 1
SW 24VAC
9 S18 CAB PROOF SWITCH 1
10 GV1 GAS VALVE SENSE 1 24VAC
Table 76. P297 Thermostat
Pin # Label Description Type
1 R TRANSFORMER 1 24VAC POWER 24VAC
2 C TRANSFORMER 1 24V COMMON 24VAC COMM
3 G BLOWER SIGNAL 24VAC DI
4 W1 1ST STAGE HEATING 24VAC DI
5 W2 2ND STAGE HEATING 24VAC DI
6 Y1 1ST STAGE COOLING 24VAC DI
7 Y2 2ND STAGE COOLING 24VAC DI
8 OCP OCCUPIED SIGNAL 24VAC DI
9 GLO GLOBAL CONTROL INPUT 24VAC DI
10 RSV RESERVED NA
Table 77. P298 IAQ Interface
Pin # Label Description Type
1 R TRANSFORMER 1 24VAC POWER 24VAC
2 C TRANSFORMER 1 24V COMMON 24VAC COMM
3 IAQ+ INDOOR AIR QUALITY 0-10VDC AI
4 GND INDOOR AIR QUALITY 0-10VDC AI
5 HUM RH SENSOR 0-10VDC AI
6 GND DIGITAL GROUND GND
7 TMP ROOM SENSOR THERMISTOR
8 DO1 SERVICE RELAY OUTPUT 24VAC DO
9 GND 24 VAC COMMON 24VAC COMM
10 DO2 EXHAUST FAN 24VAC DO
Table 78. P299 Safety
P299 Safety
1 DI1 SMOKE DETECTOR (NO) 24VAC DI
2 R TRANSFORMER 1 24VAC POWER 24VAC
3 C TRANSFORMER 1 24V COMMON 24VAC COMM
4 DI2 DIGITAL INPUT 2 FORMER (S42 & S135) 24VAC DI
5 R TRANSFORMER 1 24VAC POWER 24VAC
6 DI3 DIGITAL INPUT 3 FORMER (S149 & A42 FOR A BOX) 24VAC DI
7 R TRANSFORMER 1 24VAC POWER 24VAC
8 DI4 DIGITAL INPUT 4 FORMER (HUMIDITROL INPUT) 24VAC DI
9 C TRANSFORMER 1 24V COMMON 24VAC COMM
10 RSV RESERVED NA
Table 79. P333 Ultra - Sensors
Pin # Label Description Type
1 UPS1 SUCTION PRESSURE 0-5VDC
2 5VDC 5VDC SUPPLY 5VDC
3 GND DIGITAL GROUND
RES 0-5VDC
4 UTS1 SUMP TEMP COMPRESSOR 1