4.4 What is an indoor air quality level?
Example
3.1.1.1.1 Comfort
Air setpoint >
Air setpoint,cool >
Temp. setpoint >
Abs. /Rel. >
Cool rel. start >
Cool abs. start >
Heat rel. start >
Heat abs. start >
60
80
21,0
Relativ
1,0
---
-1,0
---
%
%
°c
K
K
Menu screen
Parameters such as ventilation and temperature set points and control method for
a given indoor air quality level are grouped in a menu, as shown in the example
above.
Indoor climate levels
Energy saving
People in the
room
Air replacement*
Deviation from de-
sired room tem-
perature*
(Ventilation stopped)
-
No
No ventilation
No control of room
temperature
Economy Menu
3.1.1.1.3
Large
No
Low
Greatest tempera-
ture deviation per-
mitted*)
Standby Menu 3.1.1.1.2 Small
No
Low
Least temperature
deviation permit-
ted*
Comfort Menu 3.1.1.1.1
None
Yes
High
Precise tempera-
ture
Manual Menu 3.1.1.1.4
Dependent on set-
ting
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 panel.
●
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).
Operation with CO2B, PIRB and RHB
See "VEX 308 EXact Operating and Servicing Instructions" for more details of VEX
operation with the following sensors:
●
Operation with CO
2
(CO2B) and motion sensor (PIRB)
●
Operation with humidity (RHB) and motion sensor (PIRB)
●
Also operation without activation from sensors
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Starting up the unit for operation
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