SIMNA, Ozo st 10, LT-08200 Vilnius, Lithuania. info@simna.lt
www.simna.lt
Typical applications of the Override function:
•
Maintenance of CO
2
quantity or VOC air quality in room
– by adding an additional CO
2
or
VOC sensor (with relay output), the main user-set ventilation rate at lower air quality will
be switched to the maximum or other preset intensity until the room is ventilated, then
unit will return to the previously mode.
•
Maintenance of relative humidity in the room
– after contacting the external relative
humidity sensor (with output relay), automatically switching to maximum or other preset
ventilation intensity will maintain the humidity level, desired by the user.
•
Ventilation on demand
– when the motion sensor is connected to the control contacts,
ventilation will be adjusted according to demand, i.e. if people are indoors, ventilation will
be carried out according to the set Override intensity and if there is nobody in the room –
the unit will operate according to main user-set intensity, for example, the minimum.
•
Ventilation with additional air extraction
– connection of additional extracting device, for
example, a kitchen hood or other extraction device without a separate fan, is intended,
thus the air extraction is carried out by the unit itself. After the activation of the function
the supply and extract air fans start operating at maximum or other preset intensity.
•
Negative pressure compensation
– intended for systems where air extraction can be
carried out in a separate air extraction fan. Supply fan then should be preset to higher
intensity than extract fan and after activation of the function, negative pressure in the
room compensation can be achieved.
4.4.4.
Settings
This menu is for air handling unit and the user parameters setting. The user
can switch the menu languages, change the screen saver, panel lock, touch
sound, season, time and date.
For the air handling unit operating in most economical mode, summer and
winter seasons have been provided:
•
Summer
- heater operation is blocked but allowed cooler operation;
•
Winter
- cooler operation is unavailable but allowed heater
operation.
Time and date is required for air handling unit operation planning.
4.4.5.
Unit switching on or off
This menu item is intended for the air handling unit switching on/off.
After switching the unit off, it will not operate according to
weekly program.
