Retrofitting bypass shutter

  1. Switch the mains fuse off.
  2. Tilt front panel forwards at the two top corners (detach from the magnets) and remove upwards.
  3. Loosen the 4 screws of the inner cover (bayonet lock) and remove it. Note information on sticker.
  4. Remove the EPP bypass cover from the EPP housing at the rear left of the exhaust duct (position I, small recessed grip at the rear).
  5. Cut a groove for the connection cable into the EPP housing at position II.
  6. Push the bypass shutter into the bypass shaft as far as it will go.

Fig. WS-BP, left-hand version

Fig. WS-BP, right-hand version

  1. Insert the connection cable into the groove, position II and III, so that it is firmly seated.

 

  1. Only for right-hand versions: Lift the bypass shutter until the motor can be easily fitted in alignment with its toothing.

Fig. WS-BP, right-hand version

Fig. WS-BP, right-hand version

Fig. WS-BP, right-hand version

  1. Only for right-hand versions: Screw down bypass motor with 2 nuts.

One screw remains free because it is not accessible.

  1. Lift the electronics slide-in module slightly, pull it out of the electronics compartment and hook it into the fitting studs position IV.
  3. Wire connection cable for bypass motor W7 on the main board (terminal X7) according to wiring diagram.
  4. Insert the electronics slide-in module into the electronics compartment.
  5. Insert inner cover into the bottom housing rail, close it and secure it with 4 screws (bayonet lock).
  6. Fit front panel in the two lugs and close (2 magnets).
  7. Affix the provided retrofit sticker on the ventilation unit so that it is clearly visible. Enter installed function and date on WS-BP.
  8. Switch the mains fuse on. Set the main switch to position I/On. On the RLS 1 WR control unit, the LEDs switch on; the start screen appears on an optional RLS T2 WS control unit.
  9. Connect the PC/notebook to the ventilation unit (USB) → Overview of ventilation unit.
  10. Call up commissioning software. Select USB connection. The start screen appears.
  11. Call up the Installer parameter and enter the service code. The programme changes to the Installer level.
  12. Select the parameter Basic settings/Bypass and activate the bypass with yes. This setting can also be made with the -web tool or on the RLS T2 WS control unit.
  13. Briefly switch off the ventilation unit with the main switch and switch it on again. The ventilation unit now performs a reference run and closes the bypass (vertical position).

The bypass is automatically blocked if the winter season is selected or at an air inlet temperature < 5 °C.

For more information, see the operating instructions of the ventilation unit.