Filter
Top Products
66 UV-SVP01A-EN
Appendix—Timeclock
the unit will respond differently to
changing conditions and maintain
a higher comfort level.
For unoccupied operation or “no
load” conditions, a lower comfort
level is provided. The load can be
switched off by using the program
for periods when the room will be
unoccupied.
Note: If the room will be
unoccupied, the time clock
should be programmed
accordingly to conserve
energy. The position of the
outside damper can allow too
much outside air in an
unoccupied space if the unit’s
time clock is set for “load” or
occupied mode and can result
in unnecessary unit cycling
and undesirable heat transfer.
Remember that the program is
easily changed and can also be
overridden after it is initially
set.
1. Press the Prog. key. Spaces or
fields for entering time (hours
and minutes) appear as dashes
separated by a colon.
2. Press Prog. again. The num-
ber of free (available) pro-
grams is given in this case to
be “Fr20” or 20.
3. Press Prog. again to return to
the event time mode.
4. Toggle the “Load” key on ()
1or off (O) to link the time with
the action.
In the example from the pre-
ceding step, you would set the
load ON.
5. Enter the time for the first pro-
gram event.
For example, should you want
the unit to operate under load
for an occupied period at 8:00
a.m., enter “08:00” AM on
the display using the h and m
keys. Better yet, enter the time
a half hour or so before the
arrival of people, so the unit
will bring the room up (or
down” to the preset occupied
temperature setpoints).
6. If the program event you just
entered will be the same every
day (as indicated by all seven
day numbers at the top of the
display) you can press Prog.
to lock in that event and go to
the next event. If not and the
program will vary during the
week (e.g. different program
for the weekend), don’t press
Prog. go to the following step.
Note: If you press Prog. by
mistake, simply continue to
press Prog. until the event
comes up in review and make
the change.
7. With the time and hour for the
event set, select the day or
days for which the event
applies by pressing the Day
key. Toggling the Day key
gives you ten options for indi-
vidual days or combinations
that can be applied. Select one
and lock it in by pressing
Prog.
In the example, if you only
want the unit to operate under
load for the time set for week-
days, you would select “1 2 3 4
5” by pressing Day, then
select another program event
for the weekend.
8. Repeat the preceding steps to
set the next program event. A
“load: event is followed by an
“unload” event. For example if
the unit is programmed for a
load condition in the morning,
you could program the unit to
unload later in the day or at
night when the room will
become unoccupied for a
period. If the occupied and
unoccupied periods vary
widely but predictably, you
can program a cycle of events
during any day or combination
of days (up to 20 events)
9. Note: If only one event is pro-
grammed, the unit will remain
in that load or unload condi-
tion all the time.
10. When all the events are pro-
grammed, press the (¹) (run)
key for normal operation. The
current time as set will be dis-
played, along with the run
symbol (¹).
Review and Change
Programs
To review a program and events at
any time, press Prog. at any time.
Programs events will be displayed
in the sequence they were entered
with repeated presses of Prog.
To change a program, select the
event as in the previous paragraph
and alter the new data (day, hour
minute) as desired to overwrite the
old program. Press Prog to store
the data.
To delete a program event, select
the event again and press h and m
until dashes appear in the time dis-
play. Press either Prog. or ( ¹) until
the dashes flash in the display.
To reset all program data, press
Res.
Override Program
(Manual Operation)
While in the Run mode (¹ symbol
in display), press the hand key
to reverse the load status (e.g. if
the load was ON, it is now OFF). A
hand symbol appears to indi-
cate the override is active.
At the next scheduled event, auto-
matic (program) control will re-
sume eliminating the override.
To switch the load permanently
ON, press the key a second
time. [ ] appears in the display.
O
O