Instruction Manual

4. Installation Wiring and Connecting
24
ACM-16ATF/ACM-32AF Manual PN 51480:A0 02/02/01
Connect Wiring to Backbox or Cabinet
Pull all annunciator wiring into the enclosure and terminate as stated and
illustrated below:
When the EIA-485 shield is not in conduit:
• Terminate the shield at the outside of the FACP backbox (ground).
• Do not allow the shield to enter or even touch the cabinet.
• Between annunciators, wire-nut multiple shields together outside of
the respective enclosures.
Figure 3 Terminating Wiring Not In Conduit
When the EIA-485 shield is in conduit:
• Connect it to system reference (system common).
• The shield can enter the cabinet, but must be insulated from the cabinet
(no electrical contact).
• Between annunciators, wire-nut multiple shields together (which can
be inside of the respective enclosure, but cannot contact the enclosure).
Figure 4 Terminating Wiring In Conduit
ACSf-term1.cdr
Shield
ACSf-term2.cdr
Shield