Firecom pantherC Series Operation Manual page 9

APPENDIX A – NETWORK INSTALLATION TIPS
Connecting Network Units
Never splice into network wires. All units come with network in and out connections.
Wire all units in series with terminators at both ends.
DO NOT
Splice additional wires into network cables
Direct Network Wiring
Do not bundle excess network wiring. Choose direct routes for network cables and
remove all excess cable.
DO NOT
Bundle excess cable
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DO
Connect using 2-conductor connectors
DO
Cut cables to length
APPENDIX A – NETWORK INSTALLATION TIPS
1. Network wires must remain in pairs.
The most important item to remember when installing a pantherC series network
system is to keep the network wires as a pair; retaining a close proximity between
the two conductors. A twisted pair is preferred, but not required. When using a
terminal block, connect the wire pair to terminals directly next to each other.
When passing through collector rings or other similar devices, use conductors that
are next to each other.
2. Network spurs are not permitted.
A network pair from one unit to the next, or to a terminator, should contain only
the two wires running directly between units with no spur routes or additional
wires spliced into the run. The units in a network are connected in series. When
retrofitting a pantherC series system into a previously installed wiring system, it is
important to trace the wiring and confirm that no additional wires have been
spliced into the intended network wires.
3. Identical wire treatment.
Both wires of a network pair should be treated identically. The wires should be of
equal length and terminated in the same manner. If one wire is connected at a
block or in-line splice, the other wire of the pair should be connected at the same
point and in the same manner, keeping the wires close together. When retrofitting
a system into a previously installed wiring system, it is important to trace the wiring
and confirm that both conductors of the wire pair are of equal length and treated
identically.
4. Avoid non-essential splices.
When possible, avoid splices on the network. When splices or termination is
required, make sure both wires of the pair are treated identically.
5. Ground shields at one end only.
Cable shielding is recommended but not required. When using shielded cable,
ground the shield at one end of the cable only.
6. Avoid bundling excess wire.
Excess network wire should be removed and not bundled. Sharp bends or kinks
in network wire can be harmful. Typical minimum bend radius for network wiring
is in the 2 to 3 inches range. See cable manufacturer for recommended minimum
bend radius.
7. Avoid 3-phase power cables and fluorescent lights.
Keep all network wires 1 foot away from 3-phase power and fluorescent lights.
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