Summer Night Cooling - Swegon COMPACT Air Operation And Maintenance Instructions

9.2.3 Summer Night Cooling

The lower temperature at night is utilized to cool down
the building structure. This reduces the cooling load dur-
ing the first hours of the day. If a cooling unit is installed,
its in-operation hours will be minimized, thus offering sav-
ings. If no cooling unit is installed, a certain cooling effect
will still be realized.
When summer night cooling function is activated, the unit
fans operate at high speed, with a supply air setpoint of
10°C, from the preset time until the conditions necessary
for stop are satisfied.
Conditions to be met to start summer night cooling at the
preset time:
• The extract air temperature should be higher than the
preset value
• The extract air should be at least 2°C warmer than the
outdoor air.
• The outdoor temperature should be above the preset
value.
• Heating has not been required between 12.00–23.00
hours.
• The unit must not operate in the high speed mode or
be stopped from an external source or manually from the
control display.
Conditions to be met to stop summer night cooling at the
preset time:
• The extract air temperature drops below the preset
value.
• The outdoor temperature drops below the preset value.
• Switch clock or external input calls for high speed.
• The extract air is less than 1 °C warmer than the outdoor
air.
The function starts once per set time period.
Settings:
Value
Extract air temperature for start 17 - 27 °C
Extract air temperature for stop 12 - 22 °C
Outdoor temperature for stop
Supply air setpoint
Operating period
Registered design. The company reserves the right to make design changes without prior notice.
Setting Factory
range setting
22 °C
16 °C
5 - 15 °C 10 °C
10 - 20 °C 10 °C
00:00-00:00 23:00-06:00
INSTALLATION
FUNCTIONS
*FUNCTIONS*
TEMPERATURE
AIR FLOW/PRESSURE
FILTER
OPERATION
HEATING
COOLING
IN/OUTPUTS
IQnomic Plus
ALL YEAR COMFORT
GB.COMPACTAHSK.210520
* TEMPERATURE *
TEMPERATURE REG
AIRING FUNCTION
SUMMER NIGHT COOL
INTERM. NIGHT HEAT
MORNING BOOST
SETPOINT TEMP DISPL
HEATING
EXT. SENSORS
* Applies to COMPACT Heat
only
www.swegon.com
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