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
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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
5.2.2 How the cross-flow plate heat exchanger works
The warm extract air drawn in from the interior (item 2 in Fig. 9) is routed through the chambers of
the cross-flow plate heat exchanger (item 1 in Fig. 9) and heats them.
When cooled, it is carried to the outside as exhaust air (item 3 in Fig. 9) via the exhaust air pipe.
At the same time, cold outdoor air is drawn in through the outdoor air pipe (item 4 in Fig. 9) and
is routed through the plate heat exchanger which was heated by the extract air. This heats up the
outdoor air. Separate routes for the extract air and outdoor air prevent them mixing.
The heated outdoor air is routed into the interior as supply air (item 5 in Fig. 9).
Item Designation
1
Cross-flow plate heat exchanger
2
Extract air
3
Exhaust air
4
Outdoor air
5
Supply air
6 Rules for correct usage
6.1
General
►
Run the ventilation unit in continuous operation. The constant ventilation creates a good
and healthy atmosphere in the room.
►
Adapt the air flow through the ventilation unit to take account of the air load created by
cooking, washing, ironing, visitors, showers, sauna, etc.
►
Set the ventilation unit so that the relative humidity of the room ranges between 40 % and
65 %. People feel most comfortable within this range.
6.2
Operation in high atmospheric humidity
NOTE
►
In the summer months, ventilate cellars and similar rooms only during the night. Otherwise
condensation from the atmospheric humidity can cause damage due to damp on the cold
walls.
Fig. 9: How the cross-flow plate heat exchanger works
