Fig. 9 - Customer Connections - York MILLENNIUM YCAS Installation Operation & Maintenance

Installation
MICROPROCESSOR
FIG. 9 – CUSTOMER CONNECTIONS
36
CUSTOMER CONNECTIONS
RELAY BOARDS
CIRCUIT BOARD
Flow Switch
System No. 1 Run
14
13
System No. 2 Run
15
Current
PWM
13 16
Temperature
PWM
13 17
Print
13
18
13
19
I/O EXPANSION BOARD
28965A
CUSTOMER
CONNECTIONS
(Flow Switch, Alarm, Run, 115VAC supply, etc.)
System No. 1
Alarm Contacts
Chilled Liquid
Circulating Pump
Start
System No. 2
Alarm Contacts
Chiller Run
Isolator
Auxiliary
Interlock
TRANSFORMERS
POWER SUPPLY
BOARD
CIRCUIT
BREAKERS
23
24
25
26
27
28
29
30
31
32
LD03502
YORK INTERNATIONAL