42
Operation
(Reference)
System Settings
Menu Item
Description
Temperature
Limit
This function automatically starts and stops air conditioners in order to prevent the
room temperature of unmanned rooms from getting too high or too low. For example,
This has the following advantages.
¡
It prevents overheating of or condensation from forming on equipment which needs
to be temperature controlled in unmanned rooms.
¡
It can also help buildings and not just individual rooms to preserve heat by
preventing unmanned rooms from reaching extremes of temperature at night.
<Overview of Function>
This function performs automatic control by monitoring the relationship between the
set upper and lower limits and the room temperature (the air conditioner intake
temperature) to prevent the set room temperature from exceeding those limits. This
function starts and stops the air conditioners and changes the operation mode.
¡
Cooling operation control (and stop control)
Cooling operation is automatically started when the room temperature rises above the
set upper temperature limit.
The air conditioner is stopped once the room temperature falls sufficiently far below
the upper temperature limit (upper temperature limit – 4
°
C or more) during cooling due
to this control.
¡
Heating operation control (and stop control)
Heating operation is automatically started when the room temperature falls below the
set lower temperature limit.
The air conditioner is stopped once the room temperature rises sufficiently far above
the lower temperature limit (lower temperature limit + 4
°
C or more) during heating due
to this control.
q
: Controlled air conditioners
¡
This controls auto-start and auto-stop for each air conditioner based on the
temperature set for each room temperature limit control group.
¡
This control is not applicable to air conditioners which are already operating,
even if they are registered to the room temperature limit control group. (It is only
applicable to stopped air conditioners.)
¡
Up to 128 indoor groups can be registered in one room temperature limit
control group.
¡
It is not possible to register the same indoor unit to multiple room temperature
limit control groups.
¡
Up to 8 room temperature limit control groups can be registered in this unit.
¡
These controls can be enabled and disenabled for each individual room
temperature limit control group.
(These controls only work for groups set as enabled.)
¡
A mark indicating that the indoor unit is under automatic control will appear on
the monitor screen.
w
: Upper room temperature limit
¡
Upper and lower room temperature limit
The upper and lower room temperature limits desired for automatic control. The
settable range of upper and lower limits is as follows.
Upper limit
: 34
°
C to 50
°
C in 1
°
C units. (The default is 36
°
C.)
Lower limit
: 2
°
C to 14
°
C in 1
°
C units. (The default is 14
°
C.)
The temperature difference between the upper or lower limit and the room
temperature when the air conditioner is in cooling operation control using this function
is 4
°
C. In heating mode it is also 4
°
C to prevent hunting.
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See page
Oper
ation
