SIMNA, Ozo st 10, LT-08200 Vilnius, Lithuania. info@simna.lt www.simna.lt
Typical applications of the O erride function:
•Maintenance of CO
2
quantity or VOC air quality in roo – by adding an additional CO
2
or
VOC sensor (with relay output), the main user-set entilation rate at lower air quality will
be switched to the maximum or other preset intensity until the room is entilated, then
unit will return to the pre iously mode.
•Maintenance of relative hu idity in the roo – after contacting the external relati e
humidity sensor (with output relay), automatically switching to maximum or other preset
entilation intensity will maintain the humidity le el, desired by the user.
•Ventilation on de and – when the motion sensor is connected to the control contacts,
entilation will be adjusted according to demand, i.e. if people are indoors, entilation will
be carried out according to the set O erride 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 de ice, for
example, a kitchen hood or other extraction de ice without a separate fan, is intended,
thus the air extraction is carried out by the unit itself. After the acti ation of the function
the supply and extract air fans start operating at maximum or other preset intensity.
•Negative pressure co pensation – 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 acti ation of the function, negati e pressure in the
room compensation can be achie ed.
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 sa er, panel lock, touch
sound, season, time and date.
For the air handling unit operating in most economical mode, summer and
winter seasons ha e been pro ided:
•Su er - heater operation is blocked but allowed cooler operation;
•Winter - cooler operation is una ailable 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.
