Fujitsu AIRSTAGE UTY-ALGX Instruction Manual page 235

System controller lite for vrf system
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Normally, the expected upper limit of power consumption of an air-conditioner according to the con-
tract with the electric company should be set as upper power limit.
Or, if there is a target figure for power consumption with a time interval, set so that this figure becomes
upper power limit.
For target power, set the value arrived after deducting an appropriate Safety Margin from the upper
power limit.
Values of upper power limit and target power changes in conjunction according to the formula shown
below.
Upper power limit = Target power x (100% + Safety Margin)
Peak Cut Function does not guarantee that power consumption would not exceed upper power limit
and target power.
Taking larger Safety Margin would reduce the possibility of power consumption exceeding upper power
limit.
Start/End Time can define up to 4 time slots dividing one day.
When electricity charges vary depends on the time, set upper power limit and target power according
to each time slot.
Uncheck the rows that are not used.
Select a unit of time (10, 15, 30, 60) which control the air-conditioners by peak cut control to make the
target electricity does not be exceed.
Normally, set the demand time according to the contract with the electric company.
If it is not specified, set 60 minutes.
Select temperature shift pattern (High Saving, Medium Saving, Low Saving) for each energy saving
group.
Shift value of the set temperature increases in the sequence of Low, Middle and High, and its impact
on the reduction in power consumption and the comfort also increases.
Normally, the impact on comfort would be minimal if Low is selected.
In the areas where comfort is not important, benefits due to reduction in power consumption would
increase at the temperature shift if it is set to Middle of High.
This would also make it unlike for the situation of Outdoor Unit Stop or Thermo OFF to occur.
Select "Not Set" for the Energy Saving Groups that are not controlled.
Even when "Not Set" is selected, Forced Thermo OFF and Outdoor Unit Stop would be performed.
When the DX-
Kit is controlled by DDC or some other external controller, the temperature shift control
is not performed to the DX-Kit.
5
Press [OK] button to save current screen information, "Active", "Not Active" of peak cut control after
input is checked, and exit it.
Press [Apply] button to save current screen information, "Active", "Not Active" of peak cut control after
input is checked, then continue to set it.
Press [Cancel] button to throw away editing data, and exit.
Copyright© 2013-2015 Fujitsu General Limited. All rights reserved.
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