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Installation
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 connect-
ing 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 neg-
ative 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
½ watt ELR resistor
P/N:71252 (supervised and power-limited)
Class A (Style Z) NAC
(supervised and power-limited)
Polarized
Bell
Polarized
Strobe
Polarized
Horn
Circuit polarities
shown in alarm
condition
B+
B- B+
Figure 2.14 Wiring NACs and IDCs for Class A Operation
32
Smoke
Pull Station
Heat
B+ B- B+ B- B+ B- B+ B- B+
B-
A+
A-
A+
A-
A+ A- A+ A- A+ A- A+ A- A+
CAC-5X Class A Converter Module
Class A (Style D) IDC
(supervised and power-limited)
Smoke
Pull Station
Heat
MRP-2002 Series Instruction Manual — P/N 53049:E5 7/28/2016
Installation of Optional Modules
Dummy load all unused
circuits - 4.7 KΩ
½ watt resistor
(P/N: 71245)
FACP Main
Circuit Board
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