Operator`s manual

(Mar, 2012)
CeilAiR OHS Series Installation, Operation & Maintenance Manual
A
ir Technology Systems, Inc.
3-4
3.3.1.5 Reviewing Scheduled
Times and Temperatures
To review your programming schedules, press and
release the MODE button to advance to desired
mode (heating or cooling). Repeatedly press and re-
lease the PROGRAM button. Each scheduled event
is displayed starting with the weekday start times and
temperatures and ends with the weekend start times
and temperatures. When your review is complete,
press and release the RESUME button.
3.3.1.6 Temperature Override
3.3.1.6.1 Temporarily Override the Set
Temperature
Press and hold the decrease or increase
button to change the room set point temperature in
1-degree increments. The new set point temperature
will be held for three hours, then the thermostat will
automatically return to the program.
3.3.1.6.2 Hold a New Temperature Set Point
Press and hold the decrease or increase button
to change the room set point temperature in 1-degree
increments. The new set point temperature can be
maintained indefi nitely by pressing and releasing the
HOLD button. The word HOLD will be displayed. The
thermostat will maintain the new set point until the
RESUME button is pressed returning the thermostat
to the original program.
3.3.1.7 Change Between °F and °C
The thermostat has the capability of displaying either
Celsius or Fahrenheit temperatures. Simultaneously
press the decrease and increase button to
switch between Celsius and Fahrenheit
3.3.1.8 Continuous Auto/Fan
At any time the system fan may be set to run continu-
ously by pressing the FAN button. The fan symbol
will appear at the lower part of the display indicating
the fan is continuously operating. To return the fan to
normal operating mode, press the FAN button again,
which will remove the fan symbol from the display.
3.3.1.4 Setback Feature - Setting
the Weekday and Weekend
Cooling Temperatures
Since the programmed time schedules are the same
for both heating and cooling, you only need to set
the cooling temperatures providing you have already
programmed the weekday and weekend heating
schedules.
The cooling temperature must be set at least two de-
grees higher than the heating temperature. Example:
if the heating temperature has been set at 70°F the
cooling, temperature must be set at 72°F or higher.
If you attempt to set the cooling temperature closer
than two degrees above the heating temperature, the
thermostat will automatically maintain a two-degree
separation between heating and cooling, thus lower-
ing the heating temperature.
STEP 1 - Press and release the MODE button until
the cooling symbol appears on the display.
STEP 2 - Press and release the PROGRAM button.
Mo Tu We Th Fr along with the morning symbol and
the fl ashing starting time will appear on the display.
STEP 3 - Press and release the PROGRAM button
repeatedly until the temperature fl ashes.
STEP 4 - Press the decrease or increase but-
ton until the desired cooling temperature is displayed
for the morning event.
STEP 5 - Repeat steps 2 through 4 for each desired
event.
(Day , Evening , Night )
STEP 6 - After setting the cooling temperature for the
weekday night event, press and release the PRO-
GRAM button until Sa Su along with the morning
event symbol and the fl ashing time appears on
the display.
STEP 7 - Repeat steps 2 through 4 for each desired
event.
(Day , Evening , Night )
STEP 8 - When the last scheduled weekend cooling
temperature is set, press and release the RESUME
button to start running the program.