
FARADAY, LLC
446993 ISSUE I REV. A
PAGE 1 OF 1
INSTALLATION INSTRUCTIONS AND WIRING FOR
CLASS A ADAPTER
CAT. NO. CAA2 P/N 12504
The 12504 Class A Adapter Board is an optional module for the 12500, 12530 or 12540 Fire Alarm System
Control Unit. The Class A Adapter provides for the conversion of a group of 4 NACs from class B to class A
operation. The board mounts to the Main Termination Board.
PARTS SUPPLIED
1
12504
Class A Adapter
4
943165
Spacer, 1”
1
446051
Cable Assembly, 26 pin 3 1/2”
1
446993
Instruction Sheet
12504 WIRING
NAC
NAC
Main Termination Board
Class A Adapter
A-
A+
B-
B+
A-
A+
B-
B+
C-
C+
D-
D+
C-
C+
D-
D+
Notification
Appliance Circuit
Class B, Style Y
Supervised, Typical
Powerlimited
4.7K 1/2W
P/N 10812
Notification
Appliance Circuit
Class A, Style Z
Supervised, Typical
Powerlimited
NOTES:
1.)
Units to be installed in accordance with all local
electrical codes.
2.)
Terminal block will accept a maximum of #12
AWG wiring.
Step 1.) Installation is to be done by qualified personnel
who have thoroughly read and understood this
instruction sheet.
Step 2.) Disconnect all power into system, including
batteries.
Step 3.) Mount Class A Adapter(s) as shown, using four
spacers (P/N 943165) to the Main Termination
Board.
Step 4.) Connect cable assembly (P/N 446051) from the
Main Termination Board connector P3 to the Class
A Adapter connector P1.
Step 5.) Attach conduit and run wires as required.
Step 6.) Connect wires to the fire alarm system control
unit as directed in the wiring diagram to the left.
Polarities are shown with the panel in an alarm
condition.
Step 7.) Apply power to system.
Step 8.) Check for proper operation of functions.
12504 MOUNTING
Class A Adapter
P
P
P1
Main Termination Board
P3