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Night
ventilation
Night ventilation can be activated via a parameter. In summer, cooling energy is
saved with night ventilation by pre-cooling rooms at night (system in manual mode,
time program or BMS off) with cool outdoor air for the following day.
This function is active when the outside temperature exceeds an adjustable
temperature (minimum outside temperature).
Night ventilation is activated if, under the above conditions, the room temperature
exceeds an adjustable temperature (start value, room temperature), and the outside
temperature < room temperature - delta outside temperature / room temperature
(adjustable):
- Fan on (with adjustable speed or stage)
- Fresh air, exhaust air damper open, mixing damper closed
Night ventilation remains active, until the room temperature < start value room
temperature-differentialroomtemperatureoroutsidetemperature≥room
temperature - (delta outside temperature / room temperature - differential delta
outside temperature / room temperature).
10.2.4 Night ventilation
(condition: outside and room
temperature sensor installed)
Night ventilation
DISPLAYSELECTIONEsc BACK
Enabling:
(NO)
NL-01
Parameter Setting range Factory setting
Enabling Yes/No No
Start value, room temperature 5 - 50 °C 22 °C
Differential 1 - 10 K 2 K
Delta outside temp / room temp. 2 - 20 K 5 K
Differential 2 - 20 K 2 K
Enable acc. to outside temperature 10 - 20 °C 15 °C
Fan speed 20 - 100 % 60 %
Fan stage 1 - 3 2
Pressure 0 - 6000 Pa 250 Pa
Flow rate 0 - 120,000 m³/h 1000 m³/h
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