Night Setback Function - Mitsubishi Electric AG-150A Instruction Book

Air-conditioner control system, centralized controller
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8-2 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.
21°C/69°F
Room
temperature
Lower limit
temperature
12°C/53°F
Heating
Heating
On
21°C/69°F
When the temperature drops below the lower limit temperature (heating
8-2-1
Setting of night setback function
To use night setback function, touch [Function 1] on the menu bar on the Initial setting, and then touch [Setback] tab. In this setback
setting window, 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.
Setback control time
setting button
8-2-2
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 window appears as shown below.
Setback setting button
Setback operation stops (when
Setback
the temperature rise 3°C/5.4°F or
operation
the control time period is over)
starts
Heating
Heating
Off
On
Off
12°C/53°F
21°C/69°F
Setback control time period
control)
Upper limit
temperature
28°C/83°F
Room
temperature
24°C/75°F
Cooling
Cooling
On
Off
24°C/75°F
When the temperature rises above the upper limit temperature (cooling
In this window, 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 window will
be shown. To cancel the setting, touch [Cancel]. Setback setting
window will be shown.
– 77 –
3°C/5.4°F
Setback
Setback
operation
operation
starts
starts
Cooling
Cooling
On
Off
28°C/83°F
24°C/75°F
Setback control time period
control)
Lower/Upper limit
temperature setting
button
Save settings button

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