Bosch BMS-WT2-XXC - Page 22

Installation Instructions
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Climate 5000 Series Gen 3 Wired Wall Thermostat (02.2022)
6. Connect the 3+4 core wire (Cable C) to CN1 on Display Board. Then connect the 3 core
end on the other end to CN40 shown below.
Figure 19
7. Take the 4 core end from cable C and plug it into CN18 on the Main Board.
Figure 20