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Installation and Operating Instructions
EN
m
WARNING
m
Central ventilation unit – KWL 250 W/W ET
structure.
7. If an external post-heater is installed, the ventilation duct must be made of non-flammable material at least 0.5 m
before and after the heating element.
4.1.2 Adjust unit to installation conditions
The unit can be adapted to the installation conditions as required. The intake air connection can be installed on the right
or left side.
Upon delivery, the intake air connection is on the right side of the unit (see Fig. 5). The supply air supply can also either
be at the top or bottom of the unit.
Intake air connection from right
85
133 192 157
Abluft
Extract air
ø125
ø125
Supply air
Zuluft
Front side
83
Dimensions in mm
ø125
Proceed as follows to modify the unit:
Zuluft
m
Risk of injury due to the unit door/back panel and the heat exchanger falling down!
The unit door/back panel and the heat exchanger can fall down when removing and cause serious injuries.
> Wear protective footwear.
> Carefully remove the unit door/rear wall and the heat exchanger with both hands.
– Adaptation Exhaust air side
1. Unhook upwards and remove the unit door panel (magnetic).
2. Loosen and remove the screws in the unit door and back panel.
3. Turn unit 180°.
4. If the supply air supply should be at the top, replace the unit back panel and tighten by hand using screws. Do not
use a cordless screwdriver or the like!
5. Leave unit door open for further installation steps.
– Adaptation Supply air supply top/bottom
1. Unhook upwards and remove the unit door panel (magnetic).
2. Loosen and remove the screws in the unit door.
3. Remove heat exchanger.
4. Carefully pull the supply air fan unit on the metal bracket towards the centre of the unit.
5. Loosen both cable connectors and thread the plugs out of the fixing lugs.
6. Turn supply air fan unit 180° (open fan side now facing down).
7. Reinsert the cable connectors in the provided holders (round/square) and connect plugs..
8. Remove the closure cap for the supply air at the bottom of the unit and place on top of the supply air connection.
9. Reinsert the supply air fan unit into the body until a click sound is heard.
10. Check the supply air fan unit for tight fit.
11. Leave unit door open for further installation steps.
4.2
Install unit
1. Install enclosed wall rail horizontally (fixing bracket at top) on the wall with suitable fixings (see Fig. 7 and Fig. 8).
Wall rail
Fig. 5
Wall
650
650
85
133 192 157
Fortluft
Exhaust air
Abluft
Fortluft
Intake air
Außenluft
Zuluft
Außenluft
Kugelsiphon
ø12
253
Fig. 7
9
Intake air connection from left
Wall
Außenluft
Intake air
Supply air
Zuluft
392
Exhaust air
Extract air
Fortluft
Abluft
157
192
133
650
Front side
Dimensions in mm
253
Fig. 6
ø125
85
195
Fig. 8
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