14 OM-121
8. Press SWITCH in the Category key group. The actual duct pressure (“Group #1=” item under
menu 3, “Static Press”) is displayed. Now that the set point has been lowered, the pressure
should drop.
Clearing an Alarm
In this exercise, assume that an alarm which requires a manual reset occurred in Unit #1. If the
conditions that caused the alarm are gone, you can clear the alarm from the RMC Panel by using the
following procedure.
Note: When a unit alarm occurs while the RMC Panel is the selected controller, the RMC
Panel’s keypad/display automatically switches to menu 17, “Units w/Alarm.” So to set up
this exercise, change the display to menu 17 by pressing the ALARMS key.
1. The item line of menu 17 shows “#1,” which indicates that there is an alarm associated with
Unit #1. Press ALARMS in the Category key group to silence the alarm horn.
2. Since the alarm is in Unit #1, change the keypad-controller interface to Unit #1 by pressing
SWITCH and then Menu NEXT. The “Unit #1” Unit Selection LED lights indicating that the
keypad/display is interfaced with Unit #1.
3. Press the ALARMS key. The first menu of the unit’s Alarm category is displayed. This is the
“Curr Alarm” menu (rooftop menu 29, SCAC menu 26).
4. With the current alarm in the display, press CLEAR in the Action key group. This clears the
alarm and returns the unit to normal operation. The “#1” alarm indication on menu 17 of the
RMC Panel automatically clears.
Modifying a Schedule
In this exercise, assume that a change in building occupancy requires the units assigned to
Schedule #4 to run from 12:30 a.m. to 5:00 p.m. on Saturday. Currently, they are scheduled to be
shut down on Saturday. Using the following procedure, you will change this schedule accordingly.
(This procedure assumes that the password has previously been entered and the 5-minute
authorization timer has not expired.)
1. With the “RMC Panel” Unit Selection LED lit, press ALARMS in the Category key group. The
first menu of the Alarm category is displayed. This is menu 17, “Units w/ Alarm.”
2. Press PREV in the Menu key group four times. Menu 13, “Schedule #4,” is displayed. The first
item of this menu, “Sun,” is also displayed. Note that you could have started at the beginning of
the Control category of menus and stepped forward to menu 13 by using the Menu NEXT key, but
it would have taken longer.
3. Press PREV in the Item key group three times. (This makes use of the wrap-around capability.)
Menu item “Sat,” is displayed. The default start-stop schedule of 00:00–00:00 should also be
displayed. Each of the four sets of numbers is an adjustable field: start hour, start minute, stop
hour, and stop minute. Note that you could have stepped forward to “Sat” by using the Item
NEXT key, but it would have taken longer.
4. Press ENTER in the Action key group. The second field (start minute) flashes, indicating that it
can be edited. Since the desired schedule is 00:30–17:00, the first field (start hour) does not need
to be changed. By pressing ENTER instead of INCR, you can bypass this field.
5. Press INCR until the start minute field is 30. Notice that the adjustable field flashes during the
change.
6. Press ENTER. The second field stops flashing, and the third field (stop hour) starts flashing. This
means that the new start minute is locked in and the stop hour can be edited.
7. Press INCR until the stop hour field is 17.
8. Press ENTER. The third field stops flashing, and the fourth field (stop minute) starts flashing.
To Next Page
Loading...