SystemAir 488819, User Manual

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6 | Operation
Duration have to be set for temporary user modes. SAVE VTR 150/B will return to its previous working mode after the
set time expires.
Note:
AUTO
mode is available for selection only if the optional
Demand Control
,
Week Schedule
and/or
external fan control functions are activated.
3.2.5.1 Permanent modes
Permanent modes are always active unless interrupted by temporary modes, activated user functions or alarms:
Icon Text Description
Auto
Automatic airflow control.
AUTO
mode is available for selection when
Demand
Control
,
Week Schedule
and/or external fan control functions are configured,
otherwise
AUTO
mode icon won’t be visible in active user modes menu.
AUTO
mode activates
Demand Control
,
Week Schedule
and/or external fan control
functions.
Demand
is available to choose as airflow setting in
Week Schedule
.
Manual
Manual selection of airflow levels. The unit can be set run at one out of four
available airflow speeds:
Off
/
Low
/
Normal
/
High
.
Note:
The fan can be set to
OFF
by activating
Manual Fan Stop
function in
Service
menu.
3.2.5.2 Temporary modes
Temporary modes are active only for a set period of time unless interrupted by active user modes, activated user func-
tions or alarms:
Icon Text Description
Holiday
Sets speed of both supply and extract air fans to
Low
levels when user is away
from home for a long period of time.
ECO mode
is active.
Set duration in days.
Crowded
Sets speed of both supply and extract air fans to maximum
High
levels and
temperature setpoint offset to –3 K when apartment is more crowded than usual.
Default temperature setpoint offset is –3 K.
Set duration in hours.
Away
Sets speed of both supply and extract air fans to
Low
levels when user is away
from home for a short period of time.
ECO mode
is active.
Set duration in hours.
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