Viessmann VITODENS 200 Start-Up/Service Instructions page 68

Additional Information
Replacement of Burner Control Unit LGM 29
68
(continued)
Setting the dip switch
Boiler model no.
WB2 11-44
WB2 15-60
Installing the replacement circuit board
1. Install new circuit board LGM 29.55 qP.
IMPORTANT
Do not remove clear covers on the circuit board.
These provide protection against static discharge.
2. Connect all plug-in connectors to circuit board LGM
29.55 qP, including #158 plug.
IMPORTANT
Do not interchange plug-in connectors "X6" and "X7".
None of the other connectors are interchangeable.
3. Install covers and .
4. Plug in grounding wire.
5. Insert circuit board VR20 .
6. Install covers and .
7. Fold up control unit and secure, using screws.
8. Insert pressure gage (do not kink capillaries).
9. Mount control housing and lock into place with
hooks located on both sides of the control unit.
10. Reinstall front enclosure panel.
11. Start up boiler and check for proper functioning
of the circuit board and the heating system.
Vitodens 200 Start-up/Service Instructions
If "FAULT : FE" appears in the display of the control unit
during the functionality check, check dip switch settings
against table on previous page and adjust if required.
Vitodens 200 WB2 Service
Dip switch setting