York YSCD, Manual, Page: 102 / 108

102
JOHNSON CONTROLS
FORM 145.05-NOM2 (807)
TABLE 23 – CONSTANT VOLUME / VARIABLE AIR VOLUME EXPANSION CONTROL BOARD *
BOARD
CONNECTOR
POINT
I/O TYPE INPUT DEVICE INPUT
IN-1 ANALOG INPUT NOT USED 0-5 VDC
IN-2 ANALOG INPUT NOT USED 0-5 VDC
IN-3 ANALOG INPUT NOT USED 0-5 VDC
IN-4 ANALOG INPUT NOT USED 0-5 VDC
IN-5 ANALOG INPUT NOT USED 0-5 VDC
IN-6 ANALOG INPUT NOT USED 0-5 VDC
IN-7 ANALOG INPUT NOT USED 0-5 VDC
IN-8 ANALOG INPUT NOT USED 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 DRY CONTACT
DO-2 BINARY OUTPUT DRY CONTACT
DO-3 BINARY OUTPUT DRY CONTACT
DO-4 BINARY 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 confi guration of the unit.
Service