Installation Of Optional Modules; 1: Cac-5X Class A Converter Module; Installation; Wiring Nacs And Idcs For Class A - Honeywell FIRE-LITE MS-10UD Series Manual

Installation of Optional Modules

2.7 Installation of Optional Modules
WARNING: RISK OF ELECTRICAL SHOCK
!
REMOVE ALL POWER (AC AND DC) BEFORE INSTALLING OR REMOVING MODULES OR WIRING.
2.7.1 CAC-5X Class A Converter Module

Installation

The CAC-5X Module can be used to convert five Style B (Class B) Initiating Device Circuits to Style D (Class A) and the two Style Y
(Class B) Notification Appliance Circuits to Style Z (Class A). The module plugs into connector J2 which is located at the top left of the
MS-5UD and MS-10UD main circuit board and J7 which is located at the top center of the MS-10UD. Note that two CAC-5X modules
are required to convert all NACs and IDCs on the MS-10UD to Class A circuits.
To install the CAC-5X in the MS-5UD or MS-10UD, remove the two main circuit board mounting screws referenced in the following
illustration and replace with the two supplied male/female standoffs in the locations indicated in the following figure. Carefully align the
connector on the CAC-5X with J2 on the FACP main circuit board and press the module securely into place. Make certain the pins are
properly aligned to prevent bending or breaking of any connector pins. Secure the CAC-5X to the standoffs with the screws that were
just removed.
To install the second CAC-5X on J7 of the MS-10UD, remove the main circuit board mounting screw referenced in the following
illus-tration and replace with the supplied male/female standoff. Next, insert a male/female standoff in circuit board of the FACP as
shown below and secure with a hex nut from the hardware kit. Use a pair of needle-nose pliers to hold the hex nut while securing.
Carefully align the connector on the CAC-5X with J7 and press the module securely into place. Make certain the pins are properly
aligned to prevent bending or breaking of any connector pins. Secure the top right corners of the CAC-5X to the standoffs with the
screw that removed in step 1 and another from the hardware kit.
remove
screw,
install
standoff

Wiring NACs and IDCs for Class A

Wire the Style Z (Class A) Notification Appliance Circuits using TB5 of the MS-5UD/MS-10UD and TB2 of the CAC-5X module. Wire
the Style D (Class A) Initiating Device Circuits using TB4 of the MS-5UD/MS-10UD and TB1 of the CAC-5X. Note that the wiring will
be identical when using TB7 NAC and TB6 IDC of the MS-10UD. 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
MS-5UD & MS-10UD Series Manual — P/N 52626:C7 6/12/2018
Installation in MS-5UD or MS-10UD
CAC-5X Module
MS-10UD Main Circuit Board
Figure 2.14 CAC-5X Module Installation
Installation in MS-10UD
install
CAC-5X Module
standoff,
fasten with
hex nut, secure
with screw
remove
screw,
install
standoff
Installation
remove
screw,
install
standoff
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