MAX300-RTG: Installation Manual Hardware Installation
42
External Communications Circuit Board ā Zone 2 and Div 2 only
The external communications circuit board is installed in all Zone 2 and Div 2 units,
and as an option in Zone 1 /Div 1 units.
Communications connections are made through the communications circuit board
on the right side of the enclosure behind the access door/purge panel. External
communications wiring exits the enclosure by way of the conduit connections (3/4
inch NPT) on the top of the enclosure. Figure 16 is a diagram of the circuit board
to aid in making physical connections for external communications.
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