29
b. Press to select days in the day-of-week
fields. Press to eliminate days from the
period.
7. Press to register the values and to move hori-
zontally (left to right) within a period.
8. Press to leave the period or override.
9. Either return to Step 4 to select another period or over-
ride, or press again to leave the current time
schedule screen and save the changes.
10. The Holiday Designation (HOLIDAYS table) may be
found in the Service Operation section, page 59. The
month, day, and duration for the holiday must be
assigned. The TIME BROADCAST ENABLE func-
tion in the BRODEF screen also must be enabled for
holiday periods to function.
TO VIEW AND CHANGE SET POINTS (Fig. 30)
1. To view the SETPOINT table, from the MENU screen
press .
2. There are 5 set points on this screen: BASE DEMAND
LIMIT, LCL SETPOINT (leaving chilled liquid set
point), ECL SETPOINT (entering chilled liquid set
point), ICE BUILD SETPOINT and TOWER FAN
HIGH SETPOINT. Only one of the CONTROL
POINT SOURCES (LCL or ECL) can be active at one
time. The control point source that is active is deter-
mined from the TEMP_CTL screen. See the Service
Operation section, page 59.
3. Press or to highlight the desired
set point entry.
4. Press to modify the highlighted set point.
5. Press or to change the
selected set point value.
6. Press to save the changes and return to the
previous screen.
SERVICE OPERATION — To view the menu-driven pro-
grams available for Service Operation, see the Service Opera-
tion section, page 59. For examples of ICVC display screens,
see Table 3.
23XRPIC3
0700
0600
1800
1300
0300
Fig. 29 — Example of Time Schedule
Operation Screen
23XRPIC3
SETPOINT SELECT
SETPOINT
Base Demand Limit
Control Point Source
LCL Setpoint
ECL Setpoint
Ice Build Setpoint
Tower Fan High Setpoint
100%
50.0 °F
60.0 °F
40.0 °F
75 °F
Fig. 30 — Example of Set Point Screen
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