Carrier WEATHERMAKER 48A4, Wiring Diagrams

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INPUT/OUTPUT CHANNEL DESIGNATIONS — ECONOMIZER CONTROL BOARD (ECB1)
INPUT/OUTPUT CHANNEL DESIGNATIONS — VAV CONTROL BOARD (ECB2)
INPUT/OUTPUT CHANNEL DESIGNATIONS — STAGED GAS HEAT CONTROL BOARD
POINT
NAME
POINT DESCRIPTION
I/O POINT
NAME
PLUG AND PIN
REFERENCE
SIGNAL PIN(S) PORT STATE
INPUTS
RMTIN Remote occupancy DI1 J4, 1-2 2 24VAC = 1, 0VAC = 0
ECONENBL,
ECOORIDE
Economizer enable DI2 J4, 3-4 4 24VAC = 1, 0VAC = 0
RARH Return air relative humidity AN1 J5, 1-3 1=24VDC, 2=0-20mA in, 3=GND 0-20mA
OARH Outdoor air relative humidity AN2 J5, 4-6 4=24VDC, 5=0-20mA in, 6=GND 0-20mA
OUTPUTS
ECB1_AO1 ECB1, analog output 1 AO1 J9, 1-2 1=0-20mA, 2=GND 0-20mA OUT
ECONOCMD
Economizer actuator
(digital control)
PP/MP J7, 1-3 1=PP/MP Data, 2=24VAC, 3=GND Belimo PP/MP Protocol
PE_A Power Exhaust stage A RLY1 J8, 1-3 1 = 2 = RLY1A, 3 = RLY1B 1 = Closes RLY1A/RLY1B
PE_B Power Exhaust stage B RLY 2 J8, 4-6 4 =5 = RLY2A, 6 = RLY2B 1 = Closes RLY2A/RLY2B
PE_C Power Exhaust stage C RLY 3 J8, 7-9 7 = 8 = RLY3A, 9 = RLY3B 1 = Closes RLY3A/RLY3B
ECON_PWR Economizer Power RLY 6 J8, 16-18 16 = 17 = RLY6A, 18 = RLY6B 1 = Closes RLY6A/RLY6B
POINT
NAME
POINT DESCRIPTION
I/O POINT
NAME
PLUG AND PIN
REFERENCE
SIGNAL PIN(S) PORT STATE
INPUTS
DI1 J4, 1-2 2 24VAC = 1, 0VAC = 0
DI2 J4, 3-4 4 24VAC = 1, 0VAC = 0
BP Building static pressure AN1 J5, 1-3 1=24VDC, 2=0-20mA in, 3=GND 0-20mA
SP Supply Duct static pressure AN2 J5, 4-6 4=24VDC, 5=0-20mA in, 6=GND 0-20mA
OUTPUTS
SFAN_VFD Supply Fan Inverter speed AO1 J9, 1-2 1=0-20mA, 2=GND 0-20mA OUT
PP/MP J7, 1-3 1=PP/MP Data, 2=24VAC, 3=GND Belimo PP/MP Protocol
RLY1 J8, 1-3 1 = 2 = RLY1A, 3 = RLY1B 1 = Closes RLY1A/RLY1B
RLY 2 J8, 4-6 4 =5 = RLY2A, 6 = RLY2B 1 = Closes RLY2A/RLY2B
RLY 3 J8, 7-9 7 = 8 = RLY3A, 9 = RLY3B 1 = Closes RLY3A/RLY3B
MLV Minimum load valve RLY 6 J8, 16-18 16 = 17 = RLY6A, 18 = RLY6B 1 = Closes RLY6A/RLY6B
POINT
NAME
POINT DESCRIPTION
I/O POINT
NAME
PLUG AND PIN
REFERENCE
SIGNAL PIN(S) PORT STATE
INPUTS
AN1 J5, 1-3 1=5v, 2=Vin, 3=GND (thermistor 1-2) (0-5VDC, thermistor, ohms)
AN2 J5, 4-6 4=5v, 5=Vin, 6=GND (thermistor 4-5) (0-5VDC, thermistor, ohms)
LAT1SGAS Leaving air temperature 1 AN3 J5, 7-9 7=5v, 8=Vin, 9=GND (thermistor 7-8) (0-5VDC, thermistor, ohms)
LAT2SGAS Leaving air temperature 2 AN4 J5, 10-12 10=5v, 11=Vin, 12=GND (thermistor 10-11) (0-5VDC, thermistor, ohms)
LAT3SGAS Leaving air temperature 3 AN5 J5, 13-15 13=5v, 14=Vin, 15=GND (thermistor 13-14) (0-5VDC, thermistor, ohms)
AN6 J6, 1-3 1=5v, 2=Vin, 3=GND (thermistor 1-2) (0-5VDC, thermistor, ohms)
AN7 J6, 4-6 4=5v, 5=Vin, 6=GND (thermistor 4-5) (0-5VDC, thermistor, ohms)
AN8 J6, 7-9 7=5v, 8=Vin, 9=GND (thermistor 7-8) (0-5VDC, thermistor, ohms)
AN9 J7, 1-2 1 (thermistor, ohms)
AN10 J7, 3-4 3 (thermistor, ohms)
OUTPUTS
AO1 J8, 1-2 1=0-20mA, 2=GND 0-20mA OUT
AO2 J8, 3-4 3=0-20mA, 4=GND 0-20mA OUT
HS3 Heat Stage 3 RLY1 J9, 1-3 1 = 2 = RLY1A, 3 = RLY1B 1 = Closes RLY1A/RLY1B
HS4 Heat Stage 4 RLY 2 J9, 4-6 4 =5 = RLY2A, 6 = RLY2B 1 = Closes RLY2A/RLY2B
HS5 Heat Stage 5 RLY 3 J9, 7-9 7 = 8 = RLY3A, 9 = RLY3B 1 = Closes RLY3A/RLY3B
HS6 Heat Stage 6 RLY 4 J9, 10-12 10 = 11 = RLY4A, 12 = RLY4B 1 = Closes RLY4A/RLY4B
RLY 5 J9, 13-15 13 = 14 = RLY5A, 15 = RLY5B 1 = Closes RLY5A/RLY5B