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4.
Usage Precautions
(1)
The electricity charge apportionment function requires correct setting and use in accordance with
the descriptions in this manual.
If correct operation based on correct setting is not performed, a reasonable result may not be
obtained.
(2)
The electricity charge apportionment function does not calculate official electricity charges like
those established by the laws and regulations of each country.
(3)
Gaining an understanding of the descriptions, etc. in this manual and using the electricity charge
apportionment function accordingly are the responsibility of the user.
(4)
The electricity charges used in electricity charge apportionment calculation are only for the power
consumed by the air conditioner.
(5)
For the electricity charge apportionment function to function properly, the VRF Controller in the
server PC must be operated continuously. If the VRF Controller is shut down or stopped by a
power failure, etc. while the data needed by calculation is being acquired, correct electricity
charge apportionment calculation may be impossible.
(6)
Electricity charge apportionment is performed for units identified by scanning. When the unit con-
figuration was changed, perform scanning to re-identify the objective units.
(7)
Constantly maintain the units which are the objective of electricity charge apportionment calcula-
tion in the normal operating state.
If units are left in abnormal state (power not supplied or in error), data acquisition and calculation
will not be correct.
The electricity charge apportionment function should not be performed during such period.
(8)
When all the indoor units managed by the System Controller Lite are not allocated to a block, etc,
the electric charges may be allocated to an undefined block. The electricity charges apportion-
ment function cannot be used to reapportion the electricity charges allocated to an undefined
block.
For cases which generate an undefined block, etc., see the later description.
(9)
Electricity charge apportionment calculation identifies units by address. When the address of a
unit was changed by automatic addressing function, etc., perform scanning to re-identify the cor-
rect address and update the block setting, if necessary.
(10)
The electricity charge apportionment function of VRF system can only be performed from 1 con-
troller or 1 gateway simultaneously.
(11)
You cannot calculate the start day of data collection.
(12)
Please correct the time periodically to make the date will not be changed.
The calculation of ECA will be as follow by correct time.
● In the case of set time back, ECA data will be deleted before returned time and collect data
newly.
● In the case of set time ahead, ECA data will disappear during skip time.
In the case that set time back to change date, please scan for the apportionment can not be cal-
culated accurately.
(13)
When outdoor unit does not communicate, the apportionment calculation of the appropriate refriger-
ant system is not performed correctly because the data needed for apportionment is not obtained.
(14)
Specifications of electricity charge apportionment are subject to change without prior notice.
(15)
Specifications of electricity charge apportionment may be different depending on the series.
(16)
With heat recovery, the apportionment result may be different even under the same operating con-
dition, depending on the cooling/heating operation ratio, etc. of indoor units in the same refrigerant
system.
For example, the case where there are both cooling units and heating units is more efficient than the
case where all units operate in cooling mode within a refrigerant system.
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