121
JOHNSON CONTROLS
FORM 145.05-NOM1 (708)
TABLE 28 – CONSTANT VOLUME / VARIABLE AIR VOLUME EXPANSION CONTROL BOARD *
BOARD
CONNECTOR
POINT
I/O TYPE
INPUT DEVICE
INPUT
IN-1
ANALOG INPUT
DISCHARGE PRESSURE SYSTEM A
0-5 VDC
IN-2
ANALOG INPUT
SUCTION PRESSURE SYSTEM A
0-5 VDC
IN-3
ANALOG INPUT
DISCHARGE PRESSURE SYSTEM B
0-5 VDC
IN-4
ANALOG INPUT
SUCTION PRESSURE SYSTEM B
0-5 VDC
IN-5
ANALOG INPUT
DISCHARGE PRESSURE SYSTEM C
0-5 VDC
IN-6
ANALOG INPUT
SUCTION PRESSURE SYSTEM C
0-5 VDC
IN-7
ANALOG INPUT
DISCHARGE PRESSURE SYSTEM D
0-5 VDC
IN-8
ANALOG INPUT
SUCTION PRESSURE SYSTEM D
0-5 VDC
IN-9
ANALOG INPUT
ENTERING WATER TEMP
THERMISTOR
IN-10
ANALOG INPUT
LEAVING WATER TEMP
THERMISTOR
IN-11
NOT USED
IN-12
BINARY INPUT
DIRTY FILTER SWITCH
DRY CONTACT 5 VDC VOLTAGE
IN-13
BINARY INPUT
FREEZESTAT
DRY CONTACT 5 VDC VOLTAGE
IN-14
BINARY INPUT
EXTERNAL SAFETY INPUT
DRY CONTACT 5 VDC VOLTAGE
IN-15
BINARY INPUT
SYSTEM ON INPUT
DRY CONTACT 5 VDC VOLTAGE
IN-16
BINARY INPUT
SYSTEM OFF INPUT
DRY CONTACT 5 VDC VOLTAGE
DO-1
BINARY OUTPUT COMPRESSOR SYSTEM A OUTPUT
DRY CONTACT
DO-2
BINARY OUTPUT COMPRESSOR SYSTEM B OUTPUT
DRY CONTACT
DO-3
BINARY OUTPUT COMPRESSOR SYSTEM C OUTPUT
DRY CONTACT
DO-4
BINARY OUTPUT COMPRESSOR SYSTEM D OUTPUT
DRY CONTACT
DO-5
NOT USED
DO-6
NOT USED
DO-7
BINARY OUTPUT STAGE HEAT 2ND STAGE /TRI STATE HEAT OPEN
DRY CONTACT
DO-8
BINARY OUTPUT STAGE HEAT 1ST STAGE / TRI STATE HEAT CLOSED
DRY CONTACT
* Check the wiring diagram in the unit for the exact location of the input and outputs as they may change based
on the configuration of the unit.
8
Summary of Contents for York VERSECON YSWD 012
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