Figure 20. Tied up the cables
5) Install the controller box grounding wire to the boiler. There are two green colored
grounding wires installed on the boiler. Remove one of the wires (the one pointing away
from the boiler is preffered). Slide the piggyback connector of the controller box grounding
wire to the ground tap. Then, install the removed grounding wire to the piggyback connector
as shown in Figure 21.
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