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COMPACT
COMPACT Control System
1
2
3
15
20
9
10
12 15 20 25
X = Extract air temperature °C
Y = Supply air temperature setpoint °C
Factory settings – breakpoints:
X1 X2 = 20 °C. X3 = 22 °C.
Y1 = 20 °C. Y2 = 18 °C. Y3 = 14 °C.
Involves the following: If the extract air temperature is below 15 °C (X1)
the supply air temperature setpoint will constantly be 20 °C (Y1).
If the extract air temperature is 20 °C (X2) the supply air temperature
setpoint will be 18 °C (Y2).
If the extract air temperature is above 22 °C (X3), the supply air tem-
perature setpoint will constantly be 14 °C (Y3).
ERS Regulation 2
ERS Regulation, continued
ERS Regulation 2
Used if the factory preset performance curve in the ERS
Control 1 function does not provide the results desired to
meet special needs and conditions. Depending on what
settings are entered, the installation of air heaters for
reheating may be required.
An individually adjusted curve regulates the supply air/
extract air temperature ratio.
See the ERS Regulation Diagram to the right.
Summer night cooling
The lower temperature at night is utilized to cool down
the building structure.
If the function is activated, the air handling unit will, if
required, operate in the high speed mode without energy
recovery and without activating the air heater, if included
in the system.
This will cause the cooling load to decrease during the
first hours of the day. If a cooling unit is installed, it will
not need to be operated, thus offering savings. If no cool-
ing unit is installed, a certain cooling effect will still be
achieved.
Set point displacement
Set point displacement is used for changing the set point
for supply air and extract air temperatures. The tempera-
ture can be increased or decreased at certain times of the
day by means of an external timer or potentiometer, for
instance.
The set point can be influenced by ±5 °C by means of 0 -
10 V external control.
External temperature sensors
There is provision for connecting external temperature
sensors, which can be used when the air handling unit’s
internal sensor does not provide representative values.
The External Extract air/Room function measures the
extract air temperature in a larger room or in the duct
system, instead of the temperature inside the air handling
unit. A temperature sensor for location in a room, is in-
cluded as standard for the COMPACT Heat system.
The External Outdoor function measures the air tempera-
ture outdoors, instead of the temperature inside the air
handling unit.
Temperature regulation
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