4
2.2.
Unit’s operating modes
The HVAC unit works according to settings made by the controller, external inputs from the bathroom, toilet or kitchen and air quality
sensors in following modes:
2.3.
Description of controls
The operating modes of the unit can be changed by selecting functions and parameters in respective menus using the touch-screen
display.
The requested option (changing the function or parameter) in each menu must be confirmed by pressing the "OK" symbol or
a symbol of "arrows" to move to the next menu. If you press the symbol "Esc" option is ignored and the system automatically returns
to basic (Information) menu.
Note
–
in idle (display) state is the touch screen CPA glazed over, at the first touch automatically activates the backlight display, next
touch can change particular functions (see description below).
2.3.1
Basic menu
Operating mode selection
Ventilation capacity selection or operation start / end
Switching on air reheating (if a reheater is installed in the system)
Displayed
mode
Description
Suitable application
(data may vary depending on national regulaitons)
“Manual mode“ – a general ventilation mode,
with ventilation provided by the unit according
to current settings.
Continuous ventilation during occupancy, with the
capacity set at outside temperatures as follows:
Above approx. -5°C to approx. 25 m
3
/h/person, i.e. for
4 persons 100 m
3
/h, with 70 m
3
/h set at night.
Below approx. -5°C to approx. 20 m
3
/h/person, i.e. for
4 persons 80 m
3
/h, with 50 m
3
/h set at night.
“Weekly program“ – a general ventilation
mode, with a required rate of ventilation
provided by the unit according to schedule
parameters.
“Automatic mode“ – the capacity of ventilation
is set by an active external input, i.e. the
user's request from the bathroom / toilet /
kitchen or according to an air quality, CO
2
,
humidity etc., if installed.
The unit switches over to these modes automatically if
current ventilation demand exceeds the capacity set in
manual mode or a weekly program.
“Ventilation run-down time“ – a temporary
ventilation mode which stops automatically
after the pre-set time has elapsed.
The unit switches over to this mode automatically after a
request from the bathroom / toilet / kitchen has expired
(if a run-down time is set).
The “Party“ mode is temporary and stops
according to the pre-set time.
A temporary mode for less frequent use of the building,
such as a party attended by a large number of people
(a request for higher ventilation capacity).
The “Holiday“ mode is temporary and stops
according to the pre-set date and time; after
that a weekly program is activated
automatically.
A temporary mode for less frequent use of the building,
such as a holiday (a unit deactivation request).
Summary of Contents for DUPLEX 250 Easy
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