Viessmann WB2-44 - Page 63

Additional Information
63
Setting the dip switch
Boiler model no.
Dip switch setting
WB2 11-44
2
1
ON
345678
WB2 15-60
2
1
ON
345678
Installing the replacement circuit board
1. Install new circuit board LGM
29.55
.
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
,
including #158 plug.
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.
5285 961 v1.3
Replacement of B urner Control Unit LGM 29 (continued)
IMPORTANT
IMPORTANT