Doors that are always or often left
open for longer periods
If a door is always, or often, left open it is possible
to use a function called CURRENT STAGE instead.
The fan and heating steps increase/decrease 6 or
9 steps [depending on the type of unit] and are
only controlled by the room temperature. Actual
Current stage is shown in the status screen. The
function current stage is activated in two ways:
When the door is closed - over run
When the door has been closed, high speed
mode remains during the fixed time that is set
under Installer menu > Settings fan > Door over
run > High speed over run and at low speed
during a fixed time under Installer menu > Settings
fan> Door over run > Low speed over run, on
the condition that it is sufficiently warm in the
premises, otherwise the fans run until the desired
temperature has been reached.
When the door is closed, the set point value
shifts from room tempe fixed set point
value difference for open door to Room temp.
day/night.
Over run is factory set so that the over run
times are controlled according to how often
the door is opened [Auto mode under Installer
menu > Settings fan > Door over run >
Over run mode].
Doors that are always open
For a door that is always open, door mode
Fixed open > can be selected under Settings
fan > Door mode.
Doors that are often open
For a door that is often open Auto can be
selected under Installer menu > Settings fan
> Door mode. In Auto mode, the control
automatically switches between Fixed flexible and
Fixed open modes depending on how often the
door has been open [when the door has been
open for longer than 300 seconds the function
changes from Fixed Flexible to Fixed Open].
schwankgroup.com/schwankair
Operating modes
Door that is opened and closed
The control function notes whether the door is
open or closed as standard, this mode is default
set and is called Fixed flexible [the setting is under
Installer menu > Settings fan > Door mode].
Open door
Indicates OP on the installer status screen.
Fan control runs at high speed mode and is
controlled to outdoor temperature.
During dropping outdoor temperatures during
the winter and increasing outdoor temperatures
during summer the fan speed increases.
High speed limit is set under Main Menu > Fan
control > High speed limit. The control curves to
the outdoor temperature are set under Installer
menu > Settings fan > Fan speed increase where
temperatures for min- and max speed are set
for summer and winter modes. Normally it is
requested that heat is engaged when the door
is opened. The set point value [Room temp. day]
is then increased with the fixed set point value
difference that can be changed under Installer
menu> Settings heating > Open door setp. diff.,
factory setting 3.0 K. The set point is set under
Main Menu > Temperature settings > Room temp.
day. If week program is used the night time set
point value is set under Main menu > Temp.
settings > Room temperature night. The room
temperature is regulated using the integrated
room temperature sensor or the external room
temperature sensor.
Closed door
Indicated CL on the installer status screen.
When heating demand the fan speed runs at low
speed which is set under Main menu > Fan speed
> Speed closed door. Heating is regulated to
Room temp. Day which is set under Main Menu >
Temperature settings > Room temp. day.
If week program is used the night time set point
value is regulated against the Room temperature
is set under Main menu > Temp. settings > Room
temperature night. The room temperature is
regulated using the integrated room temperature
sensor or the external room temperature sensor.
SchwankAir Controller
