Exhausto EXact2 VEX240 series, Basic Instructions

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Indoor air quality
level definition The four indoor air quality levels - Comfort, Standby, Economy and Manual - are
defined in menus 3.1.1.1.1 to 3.1.1.1.4. Parameters such as ventilation and tem-
perature set points and control method for a given indoor air quality level are grou-
ped in a menu, as shown in the example above. The table below shows sugges-
ted settings for each mode:
Indoor climate levels Energy sav-
ing People in
the room Air replace-
ment* Deviation from desired room
temperature*
(Ventilation stopped) - No No ventilation No control of room temperature
Economy Menu
3.1.1.1.3 Large No Low Greatest temperature deviation
permitted*)
Standby Menu 3.1.1.1.2 Small No Low Least temperature deviation per-
mitted*
Comfort Menu 3.1.1.1.1 None Yes High Precise temperature
Manual Menu 3.1.1.1.4 Dependent
on setting Yes/No Adjustable Adjustable
* Air replacement and temperature deviation set via the HMI panel.
The current indoor air quality level can be controlled in five ways:
● Via a weekly plan, based on the given operating requirements. Set via HMI pan-
el.
● via an HMI panel in the room.
● via sensor(s) placed in the room or in the extract air duct (e.g. MIO-PIR, MIO-
CO2, MIO-RH, MIO-TS)
● via a PC connected to the integral web server
● via a high-level control system (e.g. BMS unit)
NB The Comfort indoor air quality level is the overriding level. The comfort level
is also activated if a mounted PIR sensor gives a signal (the unit changes
from an energy-saving indoor climate level/OFF).
Menu 1 - Selecting operating mode
1 Operating mode
Operation >
Manual
Select If
Manual The unit is intended to always operate at the same indoor air quality
level (set in menu 3.1.1.1.4) and operation is controlled manually via
the HMI panel or the Web server
Timer The unit is controlled automatically via a fixed weekly plan
Note for commis-
sioning EXHAUSTO recommends that the operating mode be set to Manual during com-
missioning and changed to Timer operation when complete.
3005167-2022-02-02
Starting up the unit for operation
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