102 • dap4 User Manual
Power Inputs
I/O Board Pin ID
ID Connector Number
Unit TB
Isolated 24 VAC
G
J1-1
TB3-1
Isolated 24 VAC Common
G0
J1-2
TB3-2
Isolated 24 VAC
VG
J4-1
TB3-1
Isolated 24 VAC Common
VG0
J4-2
TB3-2
Control 24 VAC
C1, C4, C9, C16
J12-1, J13-1, J16-1
J22-1
TB1-2B
Control 24 VAC Common
IDC1, IDC9, IDC13,
IDC15, IDC17
J5-9, J7-5, J8-3,
J19-3, J20-9
TB1-3A
Sensors
Device
I/O Board Pin ID
ID Connector Number
Unit TB
Relative Humidity
H out
U1
J2-1
N/A
G+
+VDC
J2-4
N/A
M
GND
J2-5
N/A
Return Air Temperature
NTC
U4
J3-1
N/A
NTC
GND
J3-2
N/A
Opt Static Pressure
I/V out
U7
J6-2
N/A
Ground
GND
J6-4
N/A
Opt Air Discharge
NTC
U9
J20-3
N/A
NTC
GND
J20-4
N/A
Opt Chilled Water
Temperature
NTC
U10
J20-5
N/A
NTC
GND
J20-6
N/A
Alarms – Digital Inputs
I/O Board Pin ID
ID Connector Number
Unit TB
Compressor 1 High Pressure Alarm
ID1
J5-1
TB1-25
Compressor 1 Low Pressure Alarm
1D2
J5-2
TB2-26
Compressor 2 High Pressure Alarm
1D3
J5-3
TB2-27
Compressor 2 Low Pressure Alarm
ID4
J5-4
TB2-28
No Airflow Alarm
ID5
J5-5
TB2-18
Opt No Water Flow Alarm
ID6
J5-6
TB2-30
Opt Smoke Detector Alarm
ID7
J5-7
TB2-29
Dirty Filter Alarm
ID8
J5-8
TB1-23
Opt Humidifier Failure Alarm
ID9
J7-1
TB1-24
Opt Energy Saver Signal
1D10
J7-2
TB2-31
Opt High Condensate Water Level Alarm
ID11
J7-3
TB1-17
Opt Alarm Input 1
ID13
J8-2
TB1-14
Opt Alarm Input 2
ID14
J8-4
TB1-15
Opt Alarm Input 3
ID15
J19-2
TB1-16
Opt Alarm Input 4
ID16
J19-4
TB1-22
Water Under Floor Alarm
ID17
J20-7
TB2-32
Manual Override Active
ID18
J20-8
MOS-12