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manual bypass function
FUNCTIONS
9
Code
Name
Technical details
Equipment
(factory settings in parenthese)
Part list KWL EC 300 Eco
G4
Filter
Extract air G4
Standard
F7
Supply air F7 (optional)
Accessory
G4
Outdoor air G4
4-level operation switch Adjustment, operation
Standard
Heat recovery cell
Standard
Extract air fan
Standard
Frost protection sensor
Adjustment range -6 °C...+15 °C (WT)
Standard
Supply air fan
Standard
Bypass function
Adjustment is carried out via mechanical bypass flap. Open or closed manually. The outside
air is passed by the counter flow heat exchanger at 100% and thus the heat recovery is
stopped.
Defrost function of heat recovery cell
To protect the heat recovery cells from freezing, the supply air fan was switch off temporary
by the measured data of the frost protection sensor.
Maintenance display
Adjustment and control is effected via differential pressure switch DDS. (see wiring SS-857.1).
The differential pressure switch DDS is a complete kit to monitor air filter, system pressure
and fan operation. The filter state is indicated over a signal lamp (build on site). In that case
the filters must be cleaned or exchanged.
