Operating and installation instructions
M-WRG-II P-T (-F, -FC), M-WRG-II E-T (-F, -FC) ventilation units
- 34 -
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 A T I O N & H E A T R E C O V E R Y
11.3
M-WRG-II O/MVS, part no. 721001
This option guarantees a minimum ventilation level to DIN 18017-3. Between 08:00
and 20:00, the unit ventilates at 40 m
3
/h, dropping to 20 m
3
/h between 20:00 and 08:00.
The function is activated at the factory, cannot be switched off by the user and has
priority over all other settings. It includes the mains switch without function so that the
user cannot easily switch the unit off (it can be switched off via the building’s fuse box,
for example). This option changes the button assignment on the ventilation unit control
panels: Button 1, 2, 3, (4): 20, 40, 60, (80) m
3
/h.
The option cannot be used in conjunction with M-WRG-II O/VOC-AUL.
11.4
M-WRG-II O/VOC-AUL, part no. 721002
The ventilation unit is equipped with a VOC sensor for monitoring the outdoor air quality.
In conjunction with the “Automatic mode” ventilation program, the unit temporarily
reduces the supply air if the threshold for contamination with volatile organic compounds
(from biological decay and decomposition processes, motor traffic exhaust fumes or vola-
tile by-products from industrial and commercial operations) is exceeded (1,500 ppm). This
option is only available for units with a CO
2
sensor (M-WRG-II ...-FC). It needs to be fitted
at the factory. The option cannot be used in conjunction with M-WRG-II O/MVS.
11.5
M-WRG-II O/EGG-AUS, part no. 721003
With this option, the unit is equipped with a “Device OFF” input and a potential-free fault
indicator output.
A smoke detector or a window contact may be connected to the input, for example,
allowing the unit to be switched off if smoke is detected or a window is opened.
The fault indicator output allows the ventilation unit’s operating state to be signalled to a
central point, for example. This option needs to be fitted at the factory.
11.6
M-WRG-II O/NOF, part no. 721004
The mains switch on the ventilation unit is deactivated with this option. The user can only
change the unit’s ventilation levels / programs. However it must be ensured that the venti-
lation unit(s) can be switched off by other means (e.g. via the fuse box in the apartment or
house). This option must be fitted at the factory.
