To View And Change Set Points; Service Operation - Carrier 23xl Start-Up, Operation And Maintenance Instructions Manual

b. Press to select days in the day-of-week
ENABLE
fields. Press
DISABLE
period.
7. Press to register the values and to move hori-
ENTER
zontally (left to right) within a period.
8. Press to leave the period or override.
EXIT
9. Either return to Step 4 to select another period or over-
ride, or press again to leave the current time
EXIT
schedule screen and save the changes.
10. The Holiday Designation (HOLIDEF table) may be
found in the Service Operation section, page 46. The
month, day, and duration for the holiday must be
assigned. The Broadcast function in the BRODEF
table also must be enabled for holiday periods to func-
tion.
TO VIEW AND CHANGE SET POINTS (Fig. 23)
1. To view the SETPOINT table, from the MENU screen
press .
SETPOINT
23XL_II
Base Demand Limit
Control Point
LCW Setpoint
ECW Setpoint
ICE BUILD Setpoint
Tower Fan High Setpoint
Fig. 23 — Example of Set Point Screen
to eliminate days from the
SETPOINT SETPOINT SELECT
100%
50.0 F
60.0 F
40.0 F
85.0 F
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
active is determined from the SERVICE menu. See the
Service Operation section, page 46. The ice build (ICE
BUILD) function is also activated and configured from
the SERVICE menu.
3. Press or
NEXT
set point entry.
4. Press
SELECT
5. Press INCREASE
lected set point value.
6. Press to save the changes and return to the
ENTER
previous screen.
SERVICE OPERATION — To view the menu-driven pro-
grams available for Service Operation, see Service Operation
section, page 46. For examples of CVC display screens, see
Table 3.
25
to highlight the desired
PREVIOUS
to modify the highlighted set point.
or DECREASE to change the se-