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Operating Instructions Intelligent Controller
10
The Energy Saving function
Demand control
“Demand” indicates the “electricity demand” (average electricity over 30 minutes).
The basic charges for electricity are determined by the maximum value of
demand (the maximum electricity demand). This maximum demand for electricity
occurs during summer and winter when the air conditioning burden is the
greatest. One way of reducing electric power costs is to suppress the maximum
electricity demand during these periods. (Your actual situation depends on your
contract with your electricity provider)
Furthermore, by suppressing the maximum demand for electricity, you can assist
in the reduction of carbon dioxide emissions and help reduce global warming.
Demand control means that the air conditioning units are monitored so that their
electricity consumption does not exceed a contracted amount, and by setting a level as shown in the following diagram (demand 1, 2, or 3), the
performance of the air conditioning units can be controlled so that energy usage is reduced.
This unit suppress the maximum demand for electricity through automated control of air conditioning units by demand control output (demand
output) signals emitted by external equipments.
Demand control (with indoor unit demand settings)
Pulse signal generated
Intelligent Controller
Setting level
Setting example
Control group A Control group B
Demand 1 (contact A) Set temperature of the indoor unit
±1 °C
No setting
Demand 2 (contact B) Set temperature of the indoor unit
±2 °C
Set temperature of the indoor unit
±2 °C
Demand 3 (contact C) Indoor unit thermostat OFF Indoor unit thermostat OFF
Pulse meter
(electricity)
Pulse detector
Pulse converter
Control group A
Contact A (when cooling)
Set temperature of indoor unit rises 1 °C
Contact A (when cooling)
Set temperature of the indoor unit
remains unchanged
Control group B
External equipment
Load control output (demand output)
Contact A
Contact B
Contact C
Reduced electricity
consumption
Demand 1
Demand 2
8:00 12:00 20:00 Time16:00
Electricity consumed
11
Energy navigation function
Indoor units will run in energy saving modes according to the amount of human activity detected by
ECONAVI sensors (sold separately).
Warning
Do not use the ECONAVI feature in rooms where only disabled people or infants are present.
(It may cause damage to their condition or worsen their health)
If there is not much movement for a long time, the ECONAVI sensor may determine that the room is unoccupied and stop the air
conditioning unit.
Note
y You can turn on or off the ECONAVI feature on this unit.
y You will need a separate remote controller* with ECONAVI functionality in order to make advanced settings for the ECONAVI feature. Refer to
the operating instructions for the remote controller* with ECONAVI functionality for details on how to congure the feature.
y Even if the target temperature is changed by ECONAVI, the set temperature displayed on the unit will not change.
y Even if the mode is switched to fan due to the absence of people (standby mode), the mode displayed on the unit will not change.
y When running multiple indoor units, the energy reduction effect may be reduced depending on the conditions in the room.
* Multi-function wired remote controller (CZ-RTC5 or later)
When there is a lot of human activity
z In cooling or drying mode
Operates at the set temperature.
z In heating mode
The air conditioners run at a temperature lower than the set
temperature.
When there is not a lot of human activity
z In cooling or drying mode
The air conditioners run at a temperature higher than the set
temperature.
z In heating mode
Operates at the set temperature.
When there are no people
When there is a continuous 20 minute period of no people
z In cooling or drying mode
The temperature is set higher than when there are people in the
room.
z In heating mode
The temperature is set lower than when there are people in the
room.
When there are no people for about an hour
y The units run according to the mode set for when there are no
people. The factory preset is for low energy use operation to
continue with the temperature suppressed. (Refer to the operating
instructions for the ECONAVI sensor for information on the
operation mode when there are no people.)
y If people are detected while operating in the Absent mode, the air
conditioners return to a mode appropriate to the level of activity.
TGR-318_ENG.indb 51 2017/04/06 10:42:53
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