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Questions and answers related to electricity charge apportionment
Question
No.
Answer
Why is an electricity charge generated even though none of the indoor units is being used?
1.
Since power is consumed by the outdoor unit even when all the indoor units are not in use, an electric
charge is generated.
Why isn't the operation time and electric charge proportional?
If the room temperature is already the set temperature even when operation is turned ON by remote con-
troller, the indoor unit will not operate and the power consumption will be that much lower.
2.
In addition, if the difference between the room temperature and the set temperature is large, more power
is consumed than when the difference is small. Therefore, the operation time and electricity charge may
not necessarily be proportional.
Why is the electricity charge of operated indoor units so much smaller than that of indoor units that are not
operated at all?
Electricity charge includes the power consumed by the outdoor unit in addition to that of the indoor unit.
The outdoor unit consumes power constantly so that operation at any time is possible even through indoor
units are not operating. This is called "standby power". Since the standby power differs with the model of
3.
outdoor unit, if the number of indoor units per outdoor unit is assumed to be the same, the indoor units
which use a high standby power outdoor unit will consume more power than indoor units which use a low
standby power outdoor unit.
This question is an example of when the difference of this standby power was larger than the power con-
sumed by operation. This is a normal result. Generally, this kind of difference is made small by selecting
the model of outdoor unit based on appropriate facility design.
Why has the electricity charge suddenly increased even though use is the same as in the past?
The electricity charge is apportioned between blocks. When the number of blocks is decreased or in-
creased by the leaving and entering of tenants, the electricity charge increases and decreases. As an ex-
ample, if the case when setting so that the basic charge is apportioned equally by number of blocks, when
4.
the number of tenants decreases, apportionment per block increases and when the number of tenants
increases, apportionment per block decreases. This phenomenon also varies depending on the electric-
ity apportionment setting method. The building owner and manager should perform appropriate setting in
accordance with that policy.
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