ENG
INSTALLATION MANUAL
24
WARNING: Mounting and wiring connections must be done by a
qualified installer or authorized company. Local regulations or VDE
0100 and EN IEC 60364 regulations for electrical installations must
be considered by doing the wiring connections.
Bring the wires through the opening in bottom of the wall plate
(Picture 19 - position A). Connect the terminals 1 and 2 on room
unit with terminals GND and COM on controller (Schemes on pag-
es113-116).
Wiring connections
After you have connected the wires, put DD2+ back on the wall
plate. On the display appears rectangular frame (Picture 27).
If the rectangular frame doesn't appear on the display, the
communication between room unit and controller isn't established.
For troubleshooting refer to the DD2+ malfunctions, page 28).
Picture 20
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