Customer Control Wiring; Figure 19 - Customer Control Connections - York YVAA Installation Operation & Maintenance

Form 201.47-ICOM1
Issue date: 17/11/2022

Customer control wiring

FLOW SWITCH (-SF)
SYS. No. 1 RUN PERM
SYS. No. 2 RUN PERM
In subfreezing regions, failure to connect EVAP. PUMP START SIGNAL from terminal 23 and ter-
minal 24 to chilled water pump starter will void warranty, except when the water in the evaporator is
fully dried or appropriate concentration of glycol is reached in the water system.

Figure 19 - Customer control connections

JOHNSON CONTROLS
CONTROL
BOARD
PRINT (PNT)
LEGEND
TERMINAL BLOCK FOR CUSTOMER CONNECTIONS
TERMINAL BLOCK FOR YORK CONNECTIONS
WIRING AND COMPONENTS BY YORK
OPTIONAL EQUIPMENT
WIRING AND/OR COMPONENTS BY OTHERS
SECTION 4 - INSTALLATION
SYS. No. 1
ALARM
CONTACTS
EVAP. PUMP
START
SIGNAL
SYS. No. 2
ALARM
CONTACTS
CHILLER
RUN
RELAY
BOARD
No. 1
4
RELAY
BOARD
No. 2
41