Honeywell AUTOMATIC CONTROL SI Edition User Manual

ENGINEERING MANUAL OF AUTOMATIC CONTROL
CHILLER, BOILER, AND DISTRIBUTION SYSTEM CONTROL APPLICATIONS
307
DUAL CENTRIFUGAL CHILLERS CONTROL APPLICATION
FUNCTIONAL DESCRIPTION
Fig. 14. Dual Centrifugal Chiller Control Graphic.
Item No. Function
1 Indicates when chilled water is required by
fan system.
2 Chilled water pump ON-OFF-AUTO
function. In AUTO pump runs when system
needs chilled water.
3 Chiller ON-OFF-AUTO function (In ON and
AUTO chilled water flow required for chiller
to run).
4 Condenser pumps status. Pumps started by
chiller controls when chiller needed.
5,6 Chiller leaving water temperature and setpoint.
7 Icon to select chilled water setpoint reset
dynamic sequence display (Fig. 15).
8 BMCS commandable load limiting functions.
9 Lead chiller selector function.
10-17 Operator information.
18 Control program coordinates chiller staging
and control.
19 Icon to select cooling tower control displays.
20 Icon to select chilled water flow and pressure
control displays.
26
32.5
8
ON 78
OFF 00
29.5
BY REMOTE
CONTROLS
OPERATING
MODE
STATUS ALARM
STATUS
CHILLER
CONTROL
SETPOINTS
SEQUENCES
1 = CHILLER 1 LEADS
2 = CHILLER 2 LEADS
3 = ALTERNATES
CONTROL
PROGRAM
FLOW &
PRESSURE
CONTROL
TOWER
CONTROL
MORNING LEAD
CHILLER SELECTOR
CHILLER 1
CHILLER 2
MINIMUM
CURRENT
MAXIMUM
CHILLED WATER SETPOINT
M15255
CURRENT
PERCENT LOAD
MAX
1
5.5
10
AUTO
AUTO
AUTO
100
100
AUTO
ON
ENABLED
DISABLED
NORMAL
NORMAL
13
5.6
12
19
4
9
13
1
3
15
8
11
17
4
14
5
2
11
2
10
5
7
20
18
6
5.5
13
OFF

Honeywell AUTOMATIC CONTROL SI Edition Specifications

General

Brand	Honeywell
Model	AUTOMATIC CONTROL SI Edition
Category	Control Systems
Language	English