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9.2.3 Summer Night Cooling
The lower temperature at night is utilised to cool down
the building structure. This reduces the cooling load
during the first hours of the day. If a cooling unit is instal-
led, its in-operation hours will be minimised, thus offering
savings. If no cooling unit is installed, a certain cooling
effect will still be realised.
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
hand-held micro terminal.
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
We reserve the right to alter specifications without 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
HUMIDITY
IN/OUTPUTS
IQnomic Plus
ALL YEAR COMFORT
OPTIMIZE
GB.GOLDLP.170830
* TEMPERATURE *
TEMPERATURE REG
OUTDOOR TEMP COMP
SUMMER NIGHT COOL
INTERM. NIGHT HEAT
MORNING BOOST
SETPOINT TEMP DISPL
EXT. SENSORS
www.swegon.com
21
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