– 90 –
9-2 Night setback function
Night setback function is a function that prevents indoor dew or extreme temperature rise by heating/cooling automatically when the
room temperature goes outside of the specific range during the set time period.
Note: When the air conditioning group with night setback function is off and when the temperature exceeds the preset temperature,
heating/cooling operation starts.
Note: If the room temperature is measured by the air-conditioner’s suction temperature sensor, the temperature may not be correct
when the air-conditioner is inactive and the air is not fresh. When the air-conditioner is inactive, using a remote sensor or a
remote control sensor is recommended to measure room temperature correctly.
When the night setback control is set, air conditioning group operates as shown below.
9-2-1
Setting of night setback function
To use night setback function, touch [Function 2] on the menu bar on the Initial setting, and then touch [Setback] tab. In this setback
setting screen, control time and upper/lower limit temperature for each group can be set.
Note: If the user logs in as a building manager, some of the operations may be prohibited.
9-2-2
Setting of night setback control time period
To use night setback function, the time period of this control has to be set. Touch [Setback control time period setting] button, then
Setback control screen appears as shown below.
Lower limit
temperature
12°C/53°F
Setback operation stops (when the
temperature rises 3°C/5.4°F or the
control time period is over)
Setback
operation
starts
Upper limit
temperature
28°C/83°F
Setback
operation
starts
When the temperature drops below the lower limit temperature (heating control)
When the temperature rises above the upper limit temperature (cooling control)
21°C/69°F
Heating
Off
Heating
Off
21°C/69°F
Heating
On
21°C/69°F
Heating
On
12°C/53°F
Setback control time period
Room
temperature
24°C/75°F
Setback control time period
Cooling
Off
Cooling
Off
24°C/75°F
Cooling
On
24°C/75°F
Cooling
On
28°C/83°F
Setback
operation
starts
3°C/5.4°F
Room
temperature
Setback operation stops (when the
temperature drops 3°C/5.4°F or the
control time period is over)
Lower/Upper limit
temperature setting
button
Save settings button
Setback control time
setting button
In this screen, usability of night setback function and control start/stop
time can be set.
First, touch [Setback setting] button to use night setback function.
Next, set the control time. Set the time by pressing
button. After
setting, press OK to reflect the settings. Setback setting screen will be
shown. To cancel the setting, touch [Cancel]. Setback setting screen
will be shown.
Setback setting button
WT05369X15.book Page 90 Wednesday, November 7, 2012 10:33 AM