beautypg.com

Connect wiring to backbox or cabinet, When the eia-485 shield is not in conduit, When the eia-485 shield is in conduit – Fire-Lite ACM-32AF Annunciator Modules User Manual

Page 24: Installation wiring and connecting

background image

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

-t

e

rm

1

.c

d

r

Shield

A

C

S

f-ter

m2.c

d

r

Shield

This manual is related to the following products: