Specifications

24
2. There are 5 set points on this screen: BASE DEMAND
LIMIT, LCW SETPOINT (leaving chilled water set
point), ECW SETPOINT (entering chilled water set
point), ICE BUILD SETPOINT, and TOWER FAN
HIGH SETPOINT. Only one of the chilled water set
points can be active at one time. The set point that is ac-
tive is determined from the SERVICE menu. The ECW
option is activated on the TEMP_CTL screen and Ice
Build is enabled on the OPTIONS screen. See the Service
Operation section, page 61. The ice build (ICE BUILD)
function is also activated and configured from the SER-
VICE menu.
3. Press or to highlight the desired
set point entry.
4. Press to modify the highlighted set point.
5. Press or to change the select-
ed set point value.
6. Press to save the changes and return to the previ-
ous screen.
SERVICE OPERATION — To view the menu-driven pro-
grams available for Service Operation, see Service Operation
section, page 61. For examples of ICVC display screens, see
Table 3.
Table 3 — ICVC Display Data
1. Only 12 lines of information appear on the chiller display screen
at any one time. Press the or softkey to
highlight a point or to view items below or above the current
screen. Press the softkey twice to page forward; press
the softkey twice to page back.
2. To access the information shown in Examples 11 through 26,
enter your 4-digit password after pressing the soft-
key. If no softkeys are pressed for 15 minutes, the ICVC auto-
matically logs off (to prevent unrestricted access to PIC II
controls) and reverts to the default screen. If this happens, you
must re-enter your password to access the tables shown in
Examples 11 through 26.
3. Terms in the Description column of these tables are listed as
they appear on the chiller display screen.
4. The ICVC may be configured in English or Metric (SI) units
using the ICVC CONFIGURATION screen. See the Service
Operation section, page 45, for instructions on making this
change.
5. The items in the Reference Point Name column do not appear
on the chiller display screen. They are data or variable names
used in CCN or Building Supervisor (BS) software. They are
listed in these tables as a convenience to the operator if it is
necessary to cross reference CCN/BS documentation or use
CCN/BS programs. For more information, see the 19XR CCN
literature.
6. Reference Point Names shown in these tables in all capital let-
ters can be read by CCN and BS software. Of these capitalized
names, those preceded by a dagger (†) can also be changed
(that is, written to) by the CCN, BS, and the ICVC. Capitalized
Reference Point Names preceded by two asterisks can be
changed only from the ICVC. Reference Point Names in lower
case type can be viewed by CCN or BS only by viewing the
whole table.
7. Alarms and Alerts: An asterisk in the far right field of a ICVC
status screen indicates that the chiller is in an alarm state; an
exclamation point in the far right field of the ICVC screen indi-
cates an alert state. The asterisk (or exclamation point) indi-
cates that the value on that line has exceeded (or is
approaching) a limit. For more information on alarms and
alerts, see the Alarms and Alerts section, page 15.
8. Index of all ICVC parameters is shown in Appendix A.
9. An abbreviation in the column to the right of POINT STATUS,
indicates that the point is being Forced and the Force level. The
CCN Force priority hierarchy is found in ICVC OPERATION
AND MENUS. (This does not apply to the DEFAULT screen).
LEGEND
NEXT
PREVIOUS
SELECT
INCREASE
DECREASE
ENTER
IMPORTANT: The following notes apply to all Table 3
examples.
NEXT
PREVIOUS
NEXT
PREVIOUS
SERVICE
CCN — Carrier Comfort Network
CHW — Chilled Water
CHWR — Chilled Water Return
CHWS — Chilled Water Supply
CT — Current Transformer
ECW — Entering Chilled Water
HGBP — Hot Gas Bypass
ICVC — International Chiller Visual Controller
ISM — Integrated Starter Module
LCW — Leaving Chilled Water
LRA — Locked Rotor Amps
mA — Milliamps
P — Pressure
PIC II — Product Integrated Controls II
SS — Solid State
T — Temperature
VFD — Variable Frequency Drive
WSM — Water System Manager
° F — Temperature in Degrees Fahrenheit
^ F — Temperature Difference in Degrees Fahrenheit