Installation and Maintenance Manual

UV-SVN02C-EN 63
Time Clock
Setting the Time Clock
The Time Clock must be programmed for the unit to
operate. If not programmed, the unit may not run in the
correct occupied/unoccupied state until timing
instructions are received from the Time Clock.
Note: Power must be supplied to the unit for the time
clock to be set.
The following procedure covers:
• setting the time format
• setting the current time and day
• setting the program ON / OFF settings (events)
• pre set program selections
• deleting programs
• daylight savings setting
• overriding programs (manually)
The time clock (see Figure 51) is located behind the access
door of a Unit Ventilator.
Reset the Time Clock
To clear any programs that may exist from the factory,
press the reset button (Res.).
Note: The time clock uses Standard Time. If you are
programming during Daylight Savings Time, one
hour should be subtracted from times needed (see
“Daylight Savings Time,” p. 64).
For example, if the Daylight Savings Time is 2:30, the time
setting for the clock should be 1:30.
Set the Time Format, Time, and Day
(Program to 24 hr or am/pm format.)
1. Press the Menu button until the display screen is blank
(time not showing) and 24h or am/pm is blinking in
the upper left corner of the screen.
2. Use the + and/or - buttons to select the desired setting
and then press OK.
3. The hour display begins to blink—use the + and/or -
but
tons to select the desired setting and then press
OK.
4. The minute display begins to blink—use + / - to select
the desired set
ting and press OK.
5. The day display (on the left side of the display screen)
begi
ns to blink—use + / - to select the desired setting
and press OK.
Set the Program
Note: The Time Clock should be used to program the unit
for the UNOCCUPIED mode—the periods of time
when the unit will not be in operation. The mode
you are programming is shown on the LED display:
: The Timer is in operation (ON). The unit is in
UNOCCUPIED mode.
: The Timer is not in operation (OFF). The unit
is in OCCUPIED mode.
Note: Odd number programs activate the timer ON
function (the unit is in UNOCCUPIED mode) and
even number programs activate the timer OFF
function (the unit is in OCCUPIED mode).
Set the Switching ON Time
1. Press OK until prog 01 is visible on the LED display
(see Figure 52).
Note: When prog 01 is visible, 01 should be blinking
and the ON symbol, , should be displayed in
the LED window. Press OK again.
Figure 51. Time clock
1. Time format display
2. Day display
3. LED display
3
2
1
Figure 52. Setting the switching ON time
UV-SVN02_-EN.book Page 63 Thursday, January 24, 2013 4:48 PM