Airflow Settings; Indoor Air Quality - SystemAir SAVE VTR 150/B R 1000W User Manual

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Temperature set point is for room air temperature, supply air temperature or for extract air temperature depending on
which control mode is active. Default setting is Supply air temperature control.
Control mode of the temperature can be changed in Service menu.
5.5.2.1 ECO mode
ECO mode is a power saving function that can be activated in SET TEMPERATURE menu.
ECO mode function is available only when an internal heater is installed and configured.
While ECO mode is active, a temperature setpoint at which heater is activated is lowered to avoid activation of the heat-
er during cold nighttime.
If the temperature is very low and the heater is activated during the nighttime (even with lowered temperature set-
point), then during the upcoming daytime indoor temperature will be increased using the heat exchanger so that accu-
mulated heat could be used during the next cold nighttime, the lowered setpoint for the heater remains.
ECO mode will have impact for the following user
functions/modes if selected:
• AUTO mode
• MANUAL mode
• AWAY mode
• HOLIDAY mode
• CENTRAL VACUUM CLEANER function
• COOKER HOOD function
• FIREPLACE mode
5.5.3

Airflow settings

Airflow settings are available only in MANUAL mode. Click on fan icon on the main screen to enter SET
AIRFLOW menu.
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.
5.5.4

Indoor Air Quality

The unit automatically controls indoor humidity and/or CO
increased if air quality is decreasing.
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Use up and down arrows or a slider to change the airflow value.
ECO mode is always activated by the following modes:
• AWAY mode
• HOLIDAY mode
ECO mode is always deactivated by the following user
functions/modes:
• CROWDED mode
• REFRESH mode
• FREE COOLING function
levels by adjusting airflow setting. Airflow is
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Configuration |