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Heatcraft BOHN MAC Series - Grounding

Heatcraft BOHN MAC Series
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36
Grounding
Grounding
The earth/chassis ground connections on the new Beacon II and Smart Controller are used for
common-mode noise ltering and should be connected to a good chassis ground or earth ground
for best noise immunity.
- Beacon II Board
- All four corner brass spacers on the Beacon II board should have sheet-metal screws
and they should all be screwed in.
- Smart Controller
- Run a 20 AWG or larger wire from TB11 of the Smart Control SUB-BASE to ground
(the sub-base terminal block connectors are numbered from TB1 on the left to TB13 on
the right).

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