Installation of Optional Modules

Installation

2.6.1.2 Wiring NACs and IDCs for Class A

Wire the Style Z (Class A) Notification Appliance Circuits using TB5 of the FACP main circuit board and TB2 of the CAC-5X module. Wire the Style D (Class A) Initiating Device Circuits using TB4 of the FACP main circuit board and TB1 of the CAC-5X. Note that the wiring will be identical when using TB7 NAC and TB6 IDC of the FACP. Make certain to observe polarity when connecting the devices to the circuits. The B+ and A+ terminals must comprise the feed and return for the positive side of a device and the B- and A- terminals must comprise the feed and return for the negative side of a device. To configure any of the zones for Class B when the CAC-5X is installed, simply wire to the B+ and B- input on the FACP terminal(s) and install the End-of-Line Resistor after the last device on the circuit. Do not wire to the corresponding A+ and A- terminals on the CAC-5X module.

Class B (Style B) IDC - 4.7 KΩ

½watt ELR resistor P/N:71252 (supervised and power-limited)

Class A (Style Z) NAC

(supervised and power-limited)

Polarized

Bell

Polarized

Strobe

Class A (Style D) IDC (supervised and power-limited)

Smoke Smoke

Pull Station

Pull Station

Polarized

Horn

Heat

Heat

Ferrite Bead P/N 29150

Circuit polarities shown in alarm condition

B+ B- B+ B-

A+ A- A+ A-

 

Dummy load all unused

 

circuits - 4.7 KΩ

 

½ watt ELR resistor

B+ B- B+ B- B+ B- B+ B- B+ B-

(P/N: 71245)

FACP Main

Circuit Board

A+ A- A+ A- A+ A- A+ A- A+ A-

CAC-5X Class A Converter Module

ms10udclassa.cdr

Large gauge wire should be looped through bead at least once as illustrated. Smaller gauge wire can be looped more often.

Ferrite Bead in open position

2550ferr.cdr

Ferrite Bead in closed position

Figure 2.12 Wiring NACs and IDCs for Class A Operation

MRP-2001 & MRP-2001E PN 53040:A 4/16/2007

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