Program Time Sequences; Schedule Function - Carrier 48FP Controls Operation And Troubleshooting

KEYBOARD ENTRY
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER

Program Time Sequences

SCHEDULE FUNCTION — Two schedules are provided
with the unit controls. Schedule I provides a means to automat-
ically switch the unit from an Occupied mode to an Unoccu-
pied mode. Schedule II provides a means to automatically
change the optional discrete output (such as outdoor building
or parking lot lights) from occupied to unoccupied mode. See
Table 50.
Each schedule consists of from 1 to 8 occupied time periods
set by the operator. These time periods can be flagged to be in
effect or not in effect on each day of the week.
1. To flag a day for operation on that schedule, press
.
ENTER
2. To change a flag to NO, press
The day begins at 00.00 and ends at 24.00. The unit is in
Unoccupied mode unless a scheduled time period is in effect or
an override period is in effect.
IMPORTANT: If an Occupied mode is to extend past
midnight, it must be programmed in the following
manner: occupied period must end at 24.00 hours
(midnight), and a new occupied period must be pro-
grammed to begin at 00.00 hours
(Override) — The time schedule can be overridden to
keep the unit in the occupied mode for between 1 and 4 hours
on a one-time basis.
To override the unoccupied schedule, press
display will read OVRD OHR. Press the number of hours of
override desired followed by
override, press ; changing the display to OVRD 3HR.
ENTER
NOTE: Only whole numbers can be used.
To cancel the override, press
change back to the default display (OVRD OHR).
Table 49 — Setting Daylight Savings Time
DISPLAY
DAYLIGHT
ENM X
ENM 4
END X
END 16
ENT X
ENT 2.00
LVM X
LVM 11
LVD X
LVD 12
LVT X
LVT 2.00
.
ENTER
and the
. For example, for 3 hours of
ENTER
and the display will
ENTER
Daylight savings time field configuration of set point function
Month when daylight savings time begins
Daylight savings time configured to start month 4 (April)
Day of month when daylight savings time begins
Daylight savings time configured to start on the 16th of the
month
Time of day when daylight savings time begins
Daylight savings time configured to start at 2:00 a.m.on the 16th
of April
Month when daylight savings time ends
Daylight savings time configured to end month 11 (November)
Day of month when daylight savings time ends
Daylight savings time configured to end on the 12th of November
Time of day when daylight savings time ends
Daylight savings time configured to end at 2:00 a.m. on
November 12
through
ules) — In this subfunction, the occupied and unoccupied
times and days are scheduled.
In the following example, the building occupancy is on a set
point schedule. There are 5 periods of time that must be
programmed.
1. Period 1 is a 3-hour off-peak cool-down period
from midnight to 3:00 a.m. following the weekend
shutdown.
2. Period 2 is scheduled for Monday and Tuesday from
7:00 a.m. to 6:00 p.m.
3. Period 3 is scheduled for Wednesday, 7:00 a.m. to
9:30 p.m.
4. Period 4 is scheduled for Thursday and Friday from
7:00 a.m. to 5:00 p.m.
5. Period 5 is scheduled for Saturday from 7:00 a.m. to
12:00 p.m.
To program this schedule:
NOTE: This is an example of a schedule. Each application will
require its own schedule that should be determined by the
building load.
To Program Period 1:
1. Press to enter the period 1 subfunction. The
display will read PERIOD 1.
2. Press to scroll down to OCC (occupied time).
3. Press
4. Press to scroll down to UNO (unoccupied time).
5. Press
Next are the flags for each day.
6. Press to move to MON (Monday). Suppose that
the display reads MON NO. To change the flag so that
this period will be in effect, press
display will change from MON NO to MON YES.
52
COMMENTS
(Occupied and Unoccupied sched-
for midnight.
ENTER
for 3:00 a.m.
ENTER
, and the
ENTER