Crestron Cresnet Network - Page 23

Design Guide — Doc. 9292A Cresnet® Network • 19
NOTE:If Crestron certified wire and cable is not used and technical onsite support is
required to troubleshoot an issue caused by improper wiring, a support charge may be
incurred.
l
To maintain data integrity, Cresnet cable lengths should not exceed 1,500 ft (457 m)per
run.
l
While not mandatory, Crestron recommends placing service loops within Cresnet wiring
runs for future accessibility.
l
When daisy chaining network units, always twist the ends of the incoming wire and
outgoing wire that share a pin on the network connector.
o
Do not twist the white and blue wires together. Only twist the copper strands on the
end of each individual wire.
o
The compression connector requires the strands of each wire to compress down to
hold the wire correctly during temperature changes.
l
Observe the following when grounding the data twisted pair drain wire:
o
Stranded drain wire is connected at the power supply end only.
o
Foil shield can be removed at both ends.
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When terminating multiple wires into a green (3.5mm) terminal block:
o
Never use more than one 18AWG(0.82mm
2
) or one 12 AWG(3.31mm
2
) wires in the
same pin connection.
o
Never use more than two 22AWG(0.33mm
2
) wires in the same pin connection.
l
When terminating multiple wires into a black (5mm) terminal block:
o
Never use more than two 18AWG(0.82mm
2
) or one 12 AWG(3.31mm
2
) wires in
the same pin connection.
o
Never use more than two 22AWG(0.33mm
2
) wires in the same pin connection.
l
Following termination:
o
Ensure that each cable and its corresponding wire strands are not frayed or
touching any other connection on the connector.
o
Copper wire should be barely visible.
o
Wires should not be able to be removed from the connector when applying 5N (or
less)of force.
o
Heat shrink can be used to cover the PVCjacket transition to the four wires to allow
for additional strain relief.
o
Labels should be applied to match any applicable drawings or labeling practices
used within the Cresnet installation.