Table 25 - Expansion Control Board - York YSCD Manual

Service
TABLE 25 – EXPANSION CONTROL BOARD *
BOARD
CONNECTOR I/O TYPE
POINT
IN-1
IN-2
IN-3
IN-4
IN-5
IN-6
IN-7
IN-8
IN-9 ANALOG INPUT
IN-10 ANALOG INPUT
IN-11
IN-12 BINARY INPUT
IN-13 BINARY INPUT
IN-14 BINARY INPUT
IN-15 BINARY INPUT
IN-16 BINARY INPUT
DO-1
DO-2
DO-3
DO-4
DO-5
DO-6
DO-7 BINARY OUTPUT
DO-8 BINARY OUTPUT
* 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.
104
INPUT DEVICE
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
ENTERING WATER TEMP
LEAVING WATER TEMP
NOT USED
DIRTY FILTER SWITCH
FREEZESTAT
EXTERNAL SAFETY INPUT
SYSTEM ON INPUT
SYSTEM OFF INPUT
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
STAGE HEAT 2ND STAGE /TRI STATE HEAT OPEN
STAGE HEAT 1ST STAGE / TRI STATE HEAT CLOSED
FORM 145.05-NOM2 (807)
INPUT
THERMISTOR
THERMISTOR
DRY CONTACT 5 VDC VOLTAGE
DRY CONTACT 5 VDC VOLTAGE
DRY CONTACT 5 VDC VOLTAGE
DRY CONTACT 5 VDC VOLTAGE
DRY CONTACT 5 VDC VOLTAGE
DRY CONTACT
DRY CONTACT
JOHNSON CONTROLS