SystemAir SAVE VTR 250/B Betriebs- Und Wartungsanleitung Seite 18

18
| Configuration
The airflow may be adjusted in these steps: Off/Low/Normal/High. These settings control output signals to the sup-
ply and extract fans.
Important
It is not recommended to set fan to Off in standard households. If manual fan stop is activated, the unit
should be provided with dampers in exhaust and fresh air ducts to avoid cold draught and risk of
condensation when the unit has been stopped.
The fan can be set to Off by activating Manual Fan Stop function in Service menu.
7.5.4 Indoor Air Quality
The unit automatically controls indoor humidity and/or CO
increased if air quality is decreasing.
Demand Control function is responsible for IAQ (Indoor Air Quality) regulation. Relative humidity (RH) and/or CO
sors are responsible for IAQ monitoring.
Indoor air quality (IAQ) indicator is available if AUTO mode and Demand Control function is activated.
IAQ levels:
• ECONOMIC: Actual IAQ value is below low IAQ set point.
• GOOD: Actual IAQ value is between low and high IAQ limits.
• IMPROVING: Actual IAQ value is above high IAQ set point.
Different airflow settings can be set for IMPROVING and GOOD IAQ levels in Service menu.
Setpoint for relative humidity and CO
7.5.5 Status line
Status line located at the bottom area of home screen displays information about:
List of active alarms. See
chapter 7.7.2.3 for more
information.
Touching any of these lines will move you to the next page with more detailed list and information about each alarm or
active user function.
7.6 Description of User function icons
Icon
Heating
Heat recovery
Cooling
Cooling
recovery
Free cooling
level can be set in Service menu.
2
Text
Connected heater or pre-heater is active and air heating is in process.
Heat recovery from apartment is active.
Connected cooler is active and air cooling is in process.
Automatic cooling recovery is active when extract air temperature from
apartment is lower than outdoor air temperature and there is a cooling demand
(temperature setpoint is lower than outdoor air temperature).
No cooling recovery with heating demand. If the outdoor air temperature is
higher than then thee indoor air temperature and there is a heating demand,
function Free heating is activated instead.
Function decreases indoor air temperature by using only cool outdoor air during
nighttime to save energy consumption.
levels by adjusting airflow setting. Airflow is
2
List of active user functions.
See chapter 7.6 for more
information.
Description
GB
sen-
2
211473 | B003