DataSheet OPTIM201910 en GB

Variable Air Volume Controllers | 11 / 24
MZ3-Touch
Ventilation Control Panel
For VAV air ow control based on a single physical value like CO
2
or VOC concentration.
Functions
The room controller can set the air ow volume on the VAV controller by the 0 V ... 10 V signal. The leading value
for the control is the concentration of CO
2
, eventually VOC in the air. For the measurement of this value, a separate
transmitter shall be used with with a 0 V ... 10 V measurement signal. For CO
2
, it corresponds to 0 ppm ... 2000 ppm.
This signal shall be connected to the analog input of the room controller. No setpoint or control parameter
adjustments are possible. The operation modes can be adjusted on the room controller by touching the key
on the cover plate.
In manual mode, the chosen ow volume level
inuences the air ow set-point for VAV. The “party”
position (V
max
) is temporary. After 120 minutes, the
system changes the position to “Maximum” (60%).
In automatic mode, the CO
2
concentration inuences
the air ow setpoint for VAV.
V
max
0 400
U
C
= 10 V ⇒ V
max
U
C
= 0 V ⇒ V
min
CO
2
(ppm)
V
min
800 1200 1600 2000
40%
60%
80%
0 ppm ⇒ U
C
= 0 V 2000 ppm ⇒ U
C
= 10 V
V
max
0 Minimum
V
min
Normal Maximum Party
40%
60%
80%
U
C
= 10 V ⇒ V
max
U
C
= 0 V ⇒ V
min