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Table 101 — Economizer Control Board (ECB1) Inputs and Outputs
Table 102 — RXB Control Board (ECB2) Inputs and Outputs
NOTE: RXB is required for Digital Scroll or Humidi-MiZer
®
option.
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 to 20mA in, 3=GND
0 to 20mA
OARH
Outdoor air relative humidity
AN2
J5, 4-6
4=24VDC, 5=0 to 20mA in, 6=GND
0 to 20mA
OUTPUTS
ECB1_AO1
ECB1, analog output 1
AO1
J9, 1-2
1=0 to 20mA, 2=GND
0 to 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=Vin, 1=24VAC
24VAC = 1, 0VAC = 0
DI2
J4, 3-4
4=Vin, 3=24vac
24VAC = 1, 0VAC = 0
DI3
J4, 5-6
6=Vin, 5=24vac
DI4
J4, 7-8
8=Vin, 7=24vac
DI5
J4, 9-10
10=Vin, 9=24vac
DI6
J4, 11-12
12=Vin, 11=24vac
BP
Building static pressure
AN1
J5, 1-3
1=24VDC, 2=0 to 20mA in, 3=GND
0 to 20mA
SP
Supply Duct static pressure
AN2
J5, 4-6
4=24VDC, 5=0 to 20mA in, 6=GND
0 to 20mA
CCT
Air Temp Lvg Evap Coil
AN3
J6, 1-2
1=Vin, 2=GND
(thermistor, ohms)
DSDT
DS Discharge Temperature
AN4
J6, 3-4
3=Vin, 4=GND
(thermistor, ohms)
AN5
J6, 5-6
5=Vin, 6=GND
(thermistor, ohms)
AN6
J6, 7-8
7=Vin, 8=GND
(thermistor, ohms)
OUTPUTS
SFAN_VFD
Supply Fan Inverter speed
AO1
J9, 1-2
1=0 to 20mA, 2=GND
0 to 20mA OUT
CMPDSCAP
Digital Scroll Solenoid
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
RLY2
J8, 4-6
4 = 5 = RLY2A, 6 = RLY2B
1 = Closes RLY2A / RLY2B
HUM3WVAL
Humidi-MiZer 3 Way Valve
RLY3
J8, 7-9
7 = 8 = RLY3A, 9 = RLY3B
1 = Closes RLY3A / RLY3B
RLY4
J8, 10-12
10 = 11 = RLY4A, 12 = RLY4B
1 = Closes RLY4A / RLY4B
RLY5
J8, 13-15
13 = 14 = RLY5A, 15 = RLY5B
1 = Closes RLY5A / RLY5B
MLV
Minimum load valve
RLY6
J8, 16-18
16 = 17 = RLY6A, 18 = RLY6B
1 = Closes RLY6A / RLY6B
Summary of Contents for WEATHERMAKER 48A2020
Page 112: ...112 Fig 20 Typical Main Control Box Wiring Schematic 48 50A Units ...
Page 113: ...113 Fig 21 Typical Auxiliary Control Box Wiring Schematic ...
Page 114: ...114 Fig 22 Typical 2 Stage Gas Heat Wiring Schematic Size 060 Units Shown ...
Page 115: ...115 Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown TO NEXT PAGE ...
Page 116: ...116 Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown cont ...
Page 117: ...117 Fig 24 Typical Electric Heat Control Schematic 50 Series Size 060 Units Shown ...
Page 118: ...118 Fig 25 Typical Controls Option Wiring Schematic SW1 SW2 OR DEHUMIDIFY SWITCH ...
Page 119: ...119 Fig 26 Typical Power Schematic 48 50A2 A3 A4 A5 060 Unit Shown ...
Page 120: ...120 Fig 27 Typical Power Schematic of Greenspeed Low Ambient Option 48 50A 060 Unit Shown ...
Page 121: ...121 Fig 28 Typical Small Chassis Component Location Size 020 035 Units ...
Page 122: ...122 Fig 29 Typical Large Chassis Component Locations Size 040 060 Units ...
Page 185: ...185 APPENDIX C VFD INFORMATION cont Fig F Internal Enclosure Fan Replacement A48 7716 ...