Operating instructions
M-WRG-S/Z-S, M-WRG-S/Z-24,
M-WRG-S/Z-EIB, M-WRG-S/Z-KNX (-F, -FC) ventilation units
- 23 -
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
V E N T I L AT I O N & H E AT R E C O V E R Y
12.1.8 “Mixed gas/CO
2
control” program
Mixed gas/CO
2
control:
The ventilation unit runs constantly at the lowest ventilation level (15 m
3
/h).
A sensor monitors the air quality in the room (CO
2
and various pollutants in
gaseous form). If the limit of 600 ppm is exceeded, the ventilation unit calculates
the optimum air renewal and sets the required ventilation level in the range from
15 - 60 m
3
/h fully automatically.
NOTE
—
When it is started up for the first time, the ventilation unit must remain switched on for at
least 4 hours without interruption so that the mixed gas/CO
2
sensor can be calibrated.
► Make sure that the air is not severely contaminated during the calibration phase by
solvents, for example.
—
When you switch on again, it will take roughly 15 minutes for the sensor to recalibrate.
12.2 Set ventilation unit to Standby mode
►
Hold down the button for the “Reduced ventilation” program on the pushbutton sensor (see
section 12.1.1 on page 21) for at least 3 seconds to switch from Ventilation mode to
Standby mode.
13 General notes on operation
13.1 Set ventilation level on unit’s stepping switch
Using the stepping switch (item 2 in Fig. 10 on page 16) for three power levels and a time-limited
intensive ventilation level, you can select the required air flow.
Switch position
Air flow
I
15 m
3
/h
II
30 m
3
/h
III
60 m
3
/h
Switching sequence I-II-I
100 m
3
/h (intensive ventilation level, 15 min)
NOTE
—
Selecting switching sequence I-II-I on the stepping switch within two seconds results in
15 minutes of intensive ventilation at maximum power level (100 m
3
/h). The ventilation unit
then resumes operation at the previously set ventilation level.
—
You can cancel intensive ventilation while it is running by selecting switching sequence
I-II-I again.
CO²