4-level operation switch
clock timer WSUP
FUNCTIONS
Models: KWL EC 300 Eco R / KWL EC 300 Eco L
6
KWL EC 300 Eco removes contaminated air and replaces it with fresh filtered and heated
outdoor air.
Efficient filtering of outdoor air (G4 + F7) prevents harmful particles from entering the duct
work and rooms via the unit. Good filtering of extract air (G4) diminishes the contamination
of the unit and ensures proper operation of heat recovery and the extract air fans.
With an effective counter-current heat exchanger, most of the heat of contaminated extract
air can be transmitted to outdoor air coming inside. The efficiency of KWL EC 300 Eco
depends on the temperature of extract and outdoor air, the humidity content of extract and
outdoor air and the air flow volume of extract and supply air. The adjacent examples show
the efficiency of supply air in KWL EC 300 Eco in two different sets of circumstances.
The unit has a manual heat recovery bypass function, which eliminates needless heating of
outdoor air during summer. The automatic defrosting of the heat recovery cells intermittently
stops the supply air fan when the temperature of exhaust air goes under the set threshold
value.
The unit KWL EC 300 Eco has an 4-level operation switch and therefore four speed steps.
Selection of fan speed (4-level operation switch)
The 4-level operation switch has following functions:
Performance regulation of the fans about four speed steps
To switch off the unit KWL EC 300 Eco completly, connect a power switch by customers.
Clock timer WSUP (peripheral equipment)
NOTE: Attend seperate Installation- and Operating Instruction! (WSUP/No 91584.001)
Digital clock timter with LCD and factory-set time. Programmabe for all days of the week.
The clock timer is adapted for surface and flush mounting in dry rooms.
The weekly programm pilot the lower mode.
Control mode:
On = normal mode
Off = lower mode
Case 2.
Extract air flow
235 m
3
/h
Supply air flow
235 m
3
/h
Extract air temperature
21
°
C
Outdoor air temperature
10
°
C
Humidity of extract air
57%
Humidity of outdoor air
90%
Efficiensy of heat recovery
89%
Case 1.
Extract air flow
162 m
3
/h
Supply air flow
162 m
3
/h
Extract air temperature
21
°
C
Outdoor air temperature
-3
°
C
Humidity of extract air
35%
Humidity of outdoor air
90%
Efficiensy of heat recovery
82%
