Therma-Stor Products Group UA-135H - Manual (Page 9)

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panel receives 24Vac from the UA-135H. If 24Vac is present at the
control panel, reset the timer by pressing the reset button at the
bottom center of the timer face. The reset button is the small recessed
button with an R beneath it located below the 1...7 and h buttons.
Depress the reset button until the display clears. Release the reset
button. The display will reappear as 00:00. Resetting the timer will
clear the time and all program settings. After resetting the timer follow
the instructions below to set the correct time and ventilation programs.
4.11 Setting the Time
First, set the correct time on the timer by sliding the switch in the
upper right hand corner of the timer to the clock symbol. and pressing
the 1...7 (DAY), h (HOUR), and m (MINUTE) buttons. Remember this
timer operates on a 24-hour (military time) clock.
4.12 Ventilation Schedule
Slide the switch in the upper right hand corner to the program symbol
P. “ON” will appear to the right of the time and the number “1” will
appear in the lower right hand corner of the display. The “1” and
“ON” signify the turn on time for the first program. Press the 1...7, h
and m button to choose the days of the week for this program. You
can choose Mon.-Sun, Mon.-Fri., Sat-Sun, or any single day of the
week. The days chosen are shown along the top of the display on the
ventilation timer. Next press the h button to set the hour for the start
of the ventilation period. Remember this timer operates on a 24-hour
clock (military time). Then press the m button to set the minutes past
the hour to start the ventilation. Now, with the ventilation start time
set; press the I/O button. The word “OFF” should appear to the right
of the time and the number “1” should remain in the lower right hand
corner of the display. The “1” and “OFF” signify the turn off time for
the first program. Set the turn off time using the 1...7, h and m buttons
in the same way as described above and continue on to the second
through sixth programs. When setting the ventilation programs, you
can return to the current time display by sliding the switch in the
upper right corner of the timer to RUN. The slide switch must be set to
RUN for the timer to operate its scheduled programs.
4.13 Automatic or Manual Mode
The slide switch in the upper left of the timer is used to choose
between automatic and manual operation. When the slide switch is
set to AUTO mode, the UA-135H will ventilate when the scheduled
programs call for ventilation. When the slide switch is set to manual
(set to hand symbol on the right), the operation of the timer is
controlled by the I/O button only. Pressing the I/O button will switch the
ventilation timer between ON (detent) and OFF (detent). As you press
the I/O button, “ON” or “OFF” will be displayed to the right of the time.
The “ON” or “OFF” indicates if the ventilation timer is on or off. The
I/O button will manually override scheduled programs if the timer is in
AUTO mode.
FOR HVAC INSTALLER ONLY
Ultra-Aire 135H Installer’s & Owner’s Manual