6 Optional functions
Optional functions
SMGB0091 rev.2 - 11/2015
106
Low noise setting (Control function (
db
))
This function allows to set the maximum compressor frequency and the maximum outdoor fan speed to a value slightly
lower than the standard maximum value. Unlike optional function “Night mode (
n
)”, this setting can be enabled
regardless of outdoor air temperature.
It is conceived for installations where sound level needs to be reduced.
• Outdoor fan operation during this function: The fan speed is lowered to approximately 90% of the maximum value.
• Compressor operation during this function: The compressor frequency is reduced to 80% of the maximum value.
?
N O T E
• Cooling and heating capacities decrease while this function is activated.
• When optional functions "Compressor frequency control target value for cooling/heating operation (
Hc
/
Hh
)" are enabled, this
function has no effect.
Fixing of current control demand function (
dE
)
This function allows to regulate the input current around the percentage of the maximum compressor current which has
been selected through external input signals on the 7-segment display (60%, 70%, 80% or 100%), without the need to
short-circuit the input terminals (CN1 or CN2).
The following table shows the current control demand setting according to the input signal which has been selected:
Input signal function number
Running current control demand
00
~
05
,
0
100%
06
60%
07
70%
08
80%
09
100%
This function can be activated when current control demand function is selected at one of the input terminal indications
,
and
3
. In case that multiple current control demand functions are set at the input terminal indications
,
and
3
, the lower settings have preference over the higher settings:
60% > 70% > 80% > 100% (Control function number)
?
N O T E
If no external input signals are set, the input current control is set at 100%.
• Demand control:
Energy saving has been largely improved by adopting the self-demand function, which drastically decreases power
consumption.
Power setting
Selectable from 100%, 80%, 70% and
60% of the rated power consumption
for cooling operation.
Power consumption in excess of the
power setting range is restricted.
Morning
Daytime
Operating hours
Power consumption
Night
Maximum efficiency is secured
within the power setting range