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Precautions on use
The effect of energy saving function will be different by used device and use environment or installation
environment etc. Energy saving function does not ensure that the stable effect or function can be brought
out for the operation by specified setting. Please understand the follow precautions then operate it.
How to use the energy saving function
Since the effect of the energy saving function depends on the devices used, usage environment, in-
stallation environment, and so forth, a different effect may appear according to the building and operat-
ing period even when operated at the same settings and schedule.
Gain an understanding of the features of each energy saving function and confirm the actual effect
during operation and use while adjusting the settings, etc. as required.
Target electric power at peak cut function
There are values used as target values from the standpoint of performing peak cut control.
These values do not always guarantee that the consumed power is the target value or less. For exam-
ple, even if forced thermostat off and control which enters the outdoor unit stoppage region are each
performed, since control is ineffective if the outdoor unit is performing a protective operation (oil recov-
ery and defrosting), as a result the electric power consumed may exceed the target electric power.
Relationship between unit protection and energy saving function
For VRF, there are operations and restrictions for protecting units. The energy saving function oper-
ates within the range of these protection operations and restrictions. When the energy saving function
performs control against these protection operations and restrictions, the protection operations and re-
strictions have priority and the energy saving function is restricted and may not operate. As protection
operation of a specific device, there is oil recovery, defrosting, etc. which are automatically performed
periodically or under specified conditions.
Failure, etc.
An energy saving function operates only when the related units are operating normally.
When the power of the electricity meter and the outdoor units connected to an electricity meter and
the SYSTEM CONTROLLER LITE is turned off due to a failure, etc. the energy saving function will not
operate normally.
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Explaining to the building tenants
During energy saving function operation, different control from the setting by remote controller may
operate. For this reason, it is recommended that the building tenants be informed of this beforehand.
Since using the 3 functions of Indoor unit rotation operation Function, Outdoor Unit Capacity Save
Function and Perk cut operation Function simultaneously
mended to use a single function.
Indoor Unit Rotation operation
●
Heating operation when outside temperature is low can significantly lower the air-conditioning per-
formance.
●
If the total capacity of the indoor units stopped simultaneously in one room is large against the load
of the room, it may significantly deteriorate the comfort.
●
If the connecting capacity ratio is large, setting low stoppage rate would make it difficult to gain ben-
efits of reduction in power consumption.
●
In a system with a lot of indoor units of small capacity, comfort may be significantly lost or it may be
difficult to gain benefits of reducing in power consumption.
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can largely affect the comfort, it is recom-
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