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Table 106 — Humidi-MiZer Control Board (EXV) Inputs and Outputs
POINT
NAME
POINT DESCRIPTION
I/O POINT
NAME
PLUG AND PIN
REFERENCE
SIGNAL PIN(S)
PORT STATE
INPUTS
CCT
Air Temp Lvg Evap Coil
AN1
J5, 5-6
5=Vin, 6=GND
(Thermistor, ohms)
AN2
J5, 7-8
7=Vin,8 =GND
(Thermistor, ohms)
AN3
J5, 9-10
9=Vin, 10=GND
(Thermistor, ohms)
AN4
J5, 11-12
11=Vin, 12=GND
(Thermistor, ohms)
AN5
J5, 1-2
1=Vin, 2=GND
0 to 20mA Input
AN6
J5, 3-4
3=Vin, 4=GND
0 to 20mA Input
OUTPUTS
COND_EXV
Condenser EXV Position
OUTA
Coil1A
J6,1
1
HI Z when P5.7 and P5.6 = 0
+12vdc when P5.7 = 1 and P5.6 = 0
0vdc when P5.7 = 0 and P5.6 = 1
PROHIBITED when P5.7 = 1 and P5.6 = 1
Coil2A
J6,2
2
HI Z when P5.5 and P5.4 = 0
+12vdc when P5.5 = 1 and P5.4 = 0
0vdc when P5.5 = 0 and P5.4 = 1
PROHIBITED when P5.5 = 1 and P5.4 = 1
12VDC
J6, 3
3
Power Output
Coil3A
J6,4
4
HI Z when P5.3 and P5.2 = 0
+12vdc when P5.3 = 1 and P5.2 = 0
0vdc when P5.3 = 0 and P5.2 = 1
PROHIBITED when P5.3 = 1 and P5.2 = 1
Coil4A
J6,5
5
HI Z when P5.1 and P5.0 = 0
+12vdc when P5.1 = 1 and P5.0 = 0
0vdc when P5.1 = 0 and P5.0 = 1
PROHIBITED when P5.1 = 1 and P5.0 = 1
COND_EXV
Bypass EXV Position
OUTB
Coil1B
J7,1
1
HI Z when P8.7 and P8.6 = 0
+12vdc when P8.7 = 1 and P8.6 = 0
0vdc when P8.7 = 0 and P8.6 = 1
PROHIBITED when P8.7 = 1 and P8.6 = 1
Coil2B
J7,2
2
HI Z when P8.5 and P8.4 = 0
+12vdc when P8.5 = 1 and P8.4 = 0
0vdc when P8.5 = 0 and P8.4 = 1
PROHIBITED when P8.5 = 1 and P8.4 = 1
12VDC
J7,3
3
Power Output
Coil3B
J7,4
4
HI Z when P8.3 and P8.2 = 0
+12vdc when P8.3 = 1 and P8.2 = 0
0vdc when P8.3 = 0 and P8.2 = 1
PROHIBITED when P8.3 = 1 and P8.2 = 1
Coil4A
J7,5
5
HI Z when P8.1 and P8.0 = 0
+12vdc when P8.1 = 1 and P8.0 = 0
0vdc when P8.1 = 0 and P8.0 = 1
PROHIBITED when P8.1 = 1 and P8.0 = 1
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 ...