Honeywell AUTOMATIC CONTROL SI Edition, Engineering Manual, Page: 313 / 512

ENGINEERING MANUAL OF AUTOMATIC CONTROL
CHILLER, BOILER, AND DISTRIBUTION SYSTEM CONTROL APPLICATIONS
303
Fig. 9. Single Chiller Control Graphic.
SINGLE CENTRIFUGAL CHILLER CONTROL APPLICATION
FUNCTIONAL DESCRIPTION
Item No. Function
1 Indicates when chiller system is required by
fan system.
2 Chilled water pump ON-OFF-AUTO
function. In AUTO pump runs when fan
systems need chilled water.
3 Chiller ON-OFF-AUTO function (In ON and
AUTO chilled water flow required for chiller
to run).
4 Condenser pump status. Pump started by
chiller controls when chilled water needed.
5,6 Chiller leaving water temperature and setpoint.
7 Icon to select chiller control dynamic
sequence display (Fig. 10).
8 BMCS commandable load limiting function.
9-14 Operator information.
15 Control program coordinates chiller control.
16 Icon to select cooling tower control displays.
6.5
MINIMUM CURRENT MAXIMUM
CHILLED WATER SETPOINT
23
7
26
10.5
TOWER
CONTROL
CHILLER
SYSTEM
CONTROL
CHILLER 1
BY REMOTE
CONTROLS
OPERATING
MODE
STATUS ALARM
STATUS
CONTROL
PROGRAM
ON
PERCENT LOAD
MAX CURRENT
M15253
AUTO
6
9.5
100
16
4 13
14
1 3
6
10
8
15
11
5
12
7
2
9
AUTO
ENABLED
ON
78
NORMAL