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SECTION 4 - INSTALLATION
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 17 - Customer control connections
48
CONTROL
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
BOARD
SYS. No. 1
CONTACTS
EVAP. PUMP
START
SIGNAL
SYS. No. 2
ALARM
CONTACTS
CHILLER
Form 201.28-NM1.1
Issue date: 08/06/2021
RELAY
BOARD
No. 1
ALARM
RELAY
BOARD
No. 2
RUN
JOHNSON CONTROLS
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