Secutron MR-2320 Series User manual

Installation and Operation Manual LT-951SEC Rev. 5.3
November 2018
MR-2320 Series
Pre-Action/Deluge and Agent Release Control Panel
FM APPLICATIONS MUST HAVE CLASS A INITIATING CIRCUITS ONLY
(FOR RELEASING) AND 90 HOUR BATTERY STANDBY OPERATION

3
Table of Contents
1.0 Introduction 8
1.1 Panel Type ..................................................................................................................... 8
1.2 Overall Features ............................................................................................................ 8
2.0 Conventions 10
2.1 Circuits ........................................................................................................................... 10
2.2 Zone ............................................................................................................................... 10
2.3 Display Points ................................................................................................................ 10
2.4 Wiring Styles .................................................................................................................. 10
3.0 System Components 11
3.1 Main Pre-Action/Deluge and Agent Release Control Panel ........................................... 11
3.2 Relay Modules: Six Relays ............................................................................................ 11
3.3 Polarity Reversal/City Tie ............................................................................................... 12
3.4 Smart Relay Module ...................................................................................................... 12
3.5 Input Class A Converter: Six Circuits ............................................................................. 12
3.6 Output Class A Converter: Two Circuits ........................................................................ 13
3.7 MR-2312-ATW Remote Annunciator ............................................................................. 13
3.8 Active end-of-line ........................................................................................................... 13
3.8 Additional System Accessories ...................................................................................... 13
4.0 Mechanical Installation 14
4.1 Installing the Enclosure .................................................................................................. 14
4.2 Installing the Adder Modules .......................................................................................... 15
5.0 Cable and Jumper Connections for Main Board, Core
Board and Adder Modules 17
5.1 Main Pre-Action/Deluge and Agent Release Control Board .......................................... 17
5.2 MR-2300-A Input Class-A Converter Adder Module ...................................................... 18
5.3 MR-2300-NC2 Output Class-A Converter Adder Module .............................................. 19
5.4 Polarity Reversal and City Tie Module (Model MR-2300-PR) ........................................ 20
6.0 Field Wiring 21
6.1 Main Board Field Wiring ................................................................................................. 21
6.2 Abort and Manual Release Switch Wiring ...................................................................... 23

4
Table of Contents
6.3 Indicating Circuit Wiring ................................................................................................. 25
6.4 Releasing Circuit Wiring ................................................................................................. 26
6.5 Four-Wire Smoke Detector Wiring ................................................................................. 27
6.6 Relay Adder Module Wiring ........................................................................................... 27
6.7 Polarity Reversal and City Tie Module (MR-2300-PR) Wiring ....................................... 28
6.8 Power Supply Connection .............................................................................................. 29
6.9 Wiring Tables and Information ....................................................................................... 30
6.10 Four-Wire Smoke Power (regulated) ............................................................................. 30
6.11 Supervised Auxiliary Power (regulated) ......................................................................... 31
6.12 Unfiltered Supply (full wave rectified) ............................................................................. 31
7.0 System Checkout 32
7.1 Before turning the power “ON” ....................................................................................... 32
7.2 Power-up procedure ....................................................................................................... 32
7.3 Troubleshooting ............................................................................................................. 32
8.0 Indicators, Controls and Operations 34
8.1 Common LED indicators ................................................................................................ 35
8.2 Menu Buttons ................................................................................................................. 36
8.3 Switches and Common Indicators .................................................................................. 36
8.4 Common Controls .......................................................................................................... 37
8.5 Circuit (zone) disconnect buttons ................................................................................... 38
8.6 Common Relays ............................................................................................................. 39
8.7 Circuit Types .................................................................................................................. 39
8.8 Evacuation codes ........................................................................................................... 41
9.0 Configuration 42
9.1 Using the CFG-300 Tool ................................................................................................ 43
9.2 Entering the Passcode ................................................................................................... 44
9.3 How to Use the Keypad to Program the MR-2320 ......................................................... 44
9.4 Command Menu ............................................................................................................. 45
9.5 1. Panel Config (Command-Menu) ................................................................................ 46
9.6 2. Set Time (Command-Menu) ....................................................................................... 52
9.7 3. Set password (Command-Menu) ............................................................................... 53
9.8 4. View Event Log (Command-Menu) ............................................................................ 54
9.9 5. Print Event Log ........................................................................................................... 54
9.10 6. Clear Event Log (Command-Menu) ........................................................................... 55
9.11 9. Exit (Command-Menu) ............................................................................................... 55
10.0 Operating the Panel 56
10.1 Panel Operation During Various Hazard States ............................................................. 56

5
Table of Contents
10.2 General Panel Operation ............................................................................................... 57
11.0 Pre-Programmed Modes 58
11.1 Mode 1: Agent Release, Single Hazard, Cross-zoned, Combined Release .................. 58
11.2 Mode 2: Agent Release, Single Hazard, Not Cross-zoned, Combined Release ........... 60
11.3 Mode 3: Agent Release, Dual Hazard, Cross-zoned, Split Release .............................. 61
11.4 Mode 4: Agent Release, Dual Hazard, Not Cross-zoned, Split Release ....................... 61
11.5 Mode 5: Pre-action/Deluge, Single Hazard, Cross-zoned, Combined Release ............. 62
11.6 Mode 6: Pre-action/Deluge, Single Hazard, Not Cross-zoned, Combined Release ...... 64
11.7 Mode 7: Pre-action/Deluge, Dual Hazard, Cross-zoned, Split Release ......................... 66
11.8 Mode 8: Pre-action/Deluge, Dual Hazard, Not Cross-zoned, Split Release .................. 68
11.9 Mode 9: Agent Release, Single Hazard, Cross-zoned, NYC abort ................................ 70
11.10 Mode 10: Agent Release, Single Hazard, Not Cross-zoned, Combined Release ......... 72
11.11 Mode 11: Agent Release, Single Hazard, Cross-zoned, Combined Release ................ 74
11.12 Mode 12: Pre-action/Deluge, Single Hazard, Cross Zoned, Combined Release .......... 76
11.13 Mode 13: Pre-action/deluge, Single Hazard, Not Cross Zoned, Combined Release .... 78
11.14 Mode 14: Pre-action/deluge, Single Hazard, Not Cross Zoned, Combined Release .... 80
12.0 Appendix A: Compatible Solenoids 82
13.0 Appendix B: Compatible Synchronized Modules and
Horn/Strobes (UL/ULC) 83
13.1 Compatible Bells ............................................................................................................ 83
14.0 Appendix C: Specifications 84
15.0 Appendix D: Power Supply and Battery Calculations
(Selection Guide) 87
16.0 Warranty and Warning Information 88

6
List of Figures
Figure 1 Box dimensions, semi-flush mounting and trim ring ...................................................... 14
Figure 2 Installation of Adder Modules ........................................................................................ 16
Figure 3 Main Control Board cable connector and jumper settings ............................................ 17
Figure 4 MR-2300-A Input Class-A Converter Adder Module ..................................................... 18
Figure 5 MR-2300-NC2 Output Class-A Converter Adder Module ............................................. 19
Figure 6 MR-2306-R6 six relay adder module ............................................................................ 19
Figure 7 Polarity reversal and city tie module ............................................................................. 20
Figure 8 Initiating circuit – Class B or Style B Wiring .................................................................. 22
Figure 9 Initiating circuit– Class A or Style D Wiring ................................................................... 22
Figure 10 Abort and Manual Release Switch Class B or Style B Wiring ....................................... 23
Figure 11 Abort and Manual Release Switch Class A or Style D Wiring ....................................... 24
Figure 12 Indicating circuit – Class B or Style Y wiring ................................................................. 25
Figure 13 Indicating circuit –Class A or Style Z wiring .................................................................. 25
Figure 14 Releasing Circuit Wiring ................................................................................................ 26
Figure 15 Four-wire smoke detector wiring ................................................................................... 27
Figure 16 Relay per zone (MR-2306-R6) Terminal connection ..................................................... 27
Figure 17 Polarity reversal and city tie module terminal connection ............................................. 28
Figure 18 Power Supply Connection ............................................................................................. 29
Figure 19 LED indicators and control buttons ............................................................................... 34
Figure 20 Evacuation and Alert Codes .......................................................................................... 41
Figure 21 MR-2320 Configuration ................................................................................................. 43
Figure 22 Command Menu ............................................................................................................. 45

7
List of Tables
Table 1 Connectors and Jumpers on the Main Fire Alarm Board .............................................. 18
Table 2 Connectors and Jumpers on the Core Board ............................................................... 18
Table 3 MR-2300-PR jumper settings ........................................................................................ 20
Table 4 Settings permitted in CAN/ULCS527 ............................................................................. 21
Table 5 Initiating Circuit Wiring .................................................................................................. 30
Table 6 Indicating Circuit Wiring ................................................................................................ 30
Table 7 Relay Types ................................................................................................................... 39
Table 8 Settings permitted in CAN/ULCS527 ............................................................................. 42
Table 9 Settings permitted in UL864 ........................................................................................... 42
Table 10 Access Levels ................................................................................................................ 44
Table 11 MR-2320 Series Specifications ...................................................................................... 84
Table 12 MR-2320 System Modules and Annunciators ................................................................ 85

8
1.0 Introduction
Secutron’s MR-2320 Series Pre-Action/Deluge and Agent Release Control Panel performs the
function of fire suppression in a wide variety of applications. It is capable of being used in an
agent release sprinkler system or in a pre-action or deluge sprinkler system. It can be used in
single-hazard or dual-hazard applications with or without cross-zoning. The panel includes
common alarm, supervisory, and trouble relays, and provides regulated and unregulated
auxiliary power along with four-wire smoke power. It supports auxiliary relays and a city tie
module. The auxiliary relays are based on a hazard area status. The Secutron’s MR-2320 has
six input zones and four output zones, allowing for flexibility in most single and dual-hazard
applications for both deluge and agent releasing applications.
1.1 Panel Type
The panel can function as an agent release panel or as a pre-action/deluge panel, depending
on which of the available fixed configurations are chosen from the main programming menu.
1.1.1 Deluge sprinkler system
In deluge sprinkler system open-valve sprinkler heads terminate to a water supply that is
controlled by a single valve. When the system detects fire, it automatically opens the valve via
a releasing circuit, allowing the water to flow through all the sprinkler heads. Deluge sprinkler
systems are useful for applications in which simultaneous discharge of water through every
sprinkler is required.
1.1.2 Pre-action sprinkler system
In a pre-action sprinkler system close-valve sprinkler heads are connected to pipes that are
supervised for air pressure. The pipes terminate directly to a water supply. Pre-action systems
are useful for applications in which the prevention of an accidental discharge of water is
required.
1.1.3 Agent release system
In an agent release system, an extinguishing agent (such as Argon, dry chemical, CO2, Halon,
etc.) is automatically released upon fire detection. An abort function is added to prevent the
false release of the extinguishing agent.
1.2 Overall Features
• Basic unit has six Class B (Style B) initiating circuits, which may be configured as Class
A (Style D) using input Class A converter adder modules. Each initiating circuit is pre-
configured as Alarm, Supervisory (Latching or non-latching), water-flow, Manual
Release Switch, or Abort Switch. There are two LEDs per circuit, one for Trouble
(amber), and one dual color (amber/red) LED for Supervisory (amber) and Alarm (red).
• Basic unit has 4 power limited class B (style Y) output circuits. Output circuits 1 & 2 are
indicating circuits while output circuits 3 & 4 are releasing circuits (circuit 4 can work as
an indicating circuit in some situations; check Pre-Programmed Modes on page 58 for
details). Each indicating circuit process type is pre-configured and can be silenceable.
The signal rates depend on the selected pre-programmed configuration.
• A pushbutton associated with each initiating, indicating and releasing circuit can
individually bypass the circuit.

9
Introduction
• Configurable Signal Silence Inhibit and Auto Signal Silence Timers. For UL installations,
disable the Auto Signal Silence Timer.
• Subsequent Alarm, Supervisory, and Trouble operation.
• Four wire reset-able smoke power supply.
• Relay Contacts for Common Alarm, Common Supervisory, Common Trouble, and
Auxiliary Alarm Relay (disconnectable).
• RS-485 Interface for MR-2300 Series Remote Multiplex Annunciators and Smart relay
Module.
• Optional Modules for additional Relay Circuits, City Tie and Polarity Reversal Signaling.
• Extensive transient protection.
• Easy configuration of the panel using LCD service tool (CFG-300).
• Releasing circuit protection from false alarm by disconnecting the battery if the voltage
falls below 20.4V at the last releasing device.

10
2.0 Conventions
2.1 Circuits
Refers to an actual electrical interface for initiating (detection), indicating (signal), and
releasing.
2.2 Zone
Is a logical concept for a Fire Alarm Protected Area, and will consist of at least one Circuit.
Often the terms Zone and Circuit are used interchangeably, but in this Manual the term Circuit
is used.
2.3 Display Points
There is a display point associated with every initiating and indicating circuit of the Secutron’s
MR-2320 LED Series fire panel. For an initiating circuit there are two LEDs for every display
point: one single color (amber) and one dual color (red/amber). For an indicating circuit there
is only one LED: one single color (amber), for every display point.
2.4 Wiring Styles
Initiating and indicating circuits are Class B (Style B and Y). Changing the initiating circuits to
Class A requires an MR-2300-A adder board which will convert SIX initiating zones from Class
B (Style B) circuits to Class A (Style D). This is done without penalizing the number of circuits,
which remains the same as in Class B (Style B). Changing the indicating circuits to Class A
requires an MR-2300-NC2 adder board, which will convert TWO indicating zones from Class
B (Style Y) circuits to Class A (Style Z). Releasing circuits (Z) are Class B (Style B) only.

11
3.0 System Components
3.1 Main Pre-Action/Deluge and Agent Release Control Panel
3.2 Relay Modules: Six Relays
Model Description
MR-2320-R
Six Zone Pre-Action/Deluge and
Agent Release Control Panel with
LED display, six Class B (Style B)
initiating circuits, and four Class B
(Style Y) output circuits. Output
circuits 1 & 2 are Class B (Style B)
indicating circuits that can be
converted to Class A (Style Z) using
an MR-2300-NC2 Output Class A
Converter adder module. Output
circuits 3 & 4 are Class B (Style B)
only releasing circuits. Each output
circuit can draw 1.7A current, 5A total.
A six zone MR-2300-A Input Class A
Converter adder module may be
used for Class A (Style D) wiring of
Initiating circuits. The MR-2320
contains Common Alarm, Common
Supervisory & Common Trouble
Relays, auxiliary alarm relay
(disconnectable), an RS-485 Interface
for Remote Annunciators and a
Resettable Four Wire Smoke Detector
Power Supply. Two batteries are
required.
Model Description
MR-2306-R6 Six-relay adder module
NO/NC C
RELAY 1
NO/NC C
RELAY 2
NO/NC C
RELAY 3
NO/NC C
RELAY 4
C
RELAY 5
NO/NC C
RELAY 6
NO/NC

12
System Components
3.3 Polarity Reversal/City Tie
3.4 Smart Relay Module
3.5 Input Class A Converter: Six Circuits
Model Description
MR-2300-PR Polarity Reversal and/
or City Tie Module
Model Description
MR-2312-SW12
Smart Relay
Module (12 relays)
with white
enclosure
Model Description
MR-2300-A
Input Class A
converter Module
(six circuits). This
module has built-
in active EOL
resistors.
POLARITY
REVERSAL
ALARM
POLARITY
REVERSAL
SUPV
CITY
TIE
+ | - + | - + | -
JW4
P1 P2
MR-2300 SERIES REMOTE RELAY
BLK RED
BLK REDBLK REDBLK REDBLK REDBLK RED
- DET1 OUT+- DET2 OUT+- DET3 OUT+- DET4 OUT+- DET5 OUT+- DET6 OUT+
- DET1 RET+- DET2 RET+- DET3 RET+- DET4 RET+- DET5 RET+- DET6 RET+

13
System Components
3.6 Output Class A Converter: Two Circuits
3.7 MR-2312-ATW Remote Annunciator
3.8 Active end-of-line
The ELRX-300R(W) are power-saving End-of-Line resistors that eliminate the need for an
additional battery cabinet or larger batteries in order to meet the 60 hour standby requirement.
Additional System Accessories
Model: MR-2306-ATR/W Eight Zone Remote Annunciator (ULC and ULI Approved)
Model: MR-2300T Remote Trouble Indicator (ULC and ULI Approved)
Model: MR-2316-AT Remote Annunciator
Model: MR-2316-AT Remote Annunciator (ULC and ULI Approved)
Model: MP-300 EOL resistor plate, 3.9KΩ(ULC and ULI Approved)
Model: MP-300R EOL resistor plate, red (ULC Approved)
Model: BC-160 External Battery Cabinet (ULC and ULI Approved)
Model: MP-320R/W Solenoid EOL Module
Model Description
MR-2300-NC2
Output Class A
converter
module (two
circuits)
Model Description
MR-2312-ATW 16 Zone remote
annunciator
Model Description
ELRX-300 Active end-of-line resistor
without plate
ELRX-300R Active end-of-line resistor
with end-of-line red plate
- SIG1 OUT+- SIG2 OUT+
- SIG1 RET+- SIG2 RET+
BLK RED
BLK RED
A.C.
ON
COMMON
TROUBLE
SIGNA L
SILENCE
BUZZER
SILENCE
SIGNA L
SILENCE
LAMP
TEST
SYSTEM
RESET
SWITCH
ENABLE
FIRE ALARM
ANNUNCIATOR
BLACK
RED

14
4.0 Mechanical Installation
4.1 Installing the Enclosure
Install the MR-2320 Series panel enclosure as shown below. Mount enclosure surface mount
using the four mounting holes with the provided screws.
Figure 1 Box dimensions, semi-flush mounting and trim ring
Note: Installation, use and maintenance should be in accordance with the
manufacturer’s documents and the National Electrical Code, ANSI/NFPA 70, and
the National Fire Alarm Code ANSI/NFPA 72.
i
17"
22.5"
Adhere trim ring to
wall surface around
the MR-2320 backbox.
PLACE MR-2320 TRIM RING OVER BACKBOX
14.5"
4.5"
11"
20.0"
1.5"
5.425"
14.5"
3.5"
1"
3.5" is the maximum depth
for semi-flush mounting
using the flush trim ring
1" is the minimum depth
above the wall required
for semi-flush mounting
using the flush trim ring
4 Mounting
Holes for
Surface
Mounting

15
Mechanical Installation
Remove the door (also disconnect the ground strap), the dead front and semi-flush mount the
backbox into the wall. Peel the adhesive cover from the trim ring and stick to the wall surface
around the backbox, after wall is finished.
4.2 Installing the Adder Modules
The MR-2320 Series panel comes pre-assembled with all components and boards except for
adder modules. Module installation locations are shown below. Refer to Figure 2 on the next
page for Jumper or DIP Switch settings and see Wiring Tables and Information on page 30 for
wiring specifications.
The figure below shows a cross-section of the semi-flush mounted backbox and the trim ring. Make sure
to allow a minimum depth of 1” above the wall surface for proper door opening.
TRIM RING
MIN 1”
WALL
WOOD OR
METAL STUD
BACKBOX

16
Mechanical Installation
Figure 2 Installation of Adder Modules
BATTERY BATTERY
CLASS-A converter
board for detection
circuits MR-2300-A
(6 circuits)
CLASS-A converter
board for indicating
circuits MR-2300-NC2
(2 circuits )
Reverse polarity and city
tie module MR-2300-PR.
Mounted on hex spacer
with two screws provided
Relay Module MR-2306-R6
Transformer
AC wiring terminal
P3
BA TT ERY
P4
+
-
P1
P2
SEC TX
P6 P5
POWER SUPPLY
S-+NC NOCNC NOCNC NOCNC NOC
JW2
JW1
-+-+-+-+-+-+
DET 1DET 2DET 3DET 4DET 5DET 6
-+-+-+-+-+-+
SIG 1SIG 2SIG 3SIG 4
AUX
4-WIRE SPLY
COM- COM+TRB TRL
UNFLTD SPLY RTI PORT
JW5
JW6
JW4
RS-485AUX. RELAYAL AR M R EL A Y
SUPERVISORY
RELAY
TR OU BL E
RELAY
POWER
SIGNAL
JW7
SYSTEM
RESET
AC ON
X
M
?
GROUND FAULT
CPU FAIL
ABORT
RELEASED
COMMON ALARM
COMMON SUPV
REMOTETROUBLE
COMMONTROUBLE
BATTERY TROUBLE
SIGNAL
SILENCE
AUXILIARY
DISCONNECT
LAMP
TEST
ALM/SUP/TBL/
BLDG AUDIBLE SIL
RAC2
(ZONE 4)
RAC1
(ZONE 3)
NAC2
(ZONE 2)
NAC1
(ZONE 1)
IAC6
(ZONE 1)
IAC5
(ZONE 5)
IAC4
(ZONE 4)
IAC3
(ZONE 3)
IAC2
(ZONE 2)
IAC1
(ZONE 1)
P6
PRE
RELEASE
TO MR-2300-PR MODULE TO MR-2306-R6 RELAY MODULE

17
5.0 Cable and Jumper Connections for
Main Board, Core Board and Adder
Modules
5.1 Main Pre-Action/Deluge and Agent Release Control Board
Figure 3 Main Control Board cable connector and jumper settings
S-+NC NOCNC NOCNC NOCNC NOC
JW2
JW1
-+-+-+-+-+-+
DET 1DET 2DET 3DET 4DET 5DET 6
-+-+-+-+-+-+
SIG 1SIG 2SIG 3SIG 4
AUX
4-WIRE SPLY
COM- COM+TRB TRL
UNFLTD SPLY RTI PORT
JW5
JW6
JW4
RS-485AUX. RELAYAL AR M R EL A Y
SUPERVISORY
RELAY
TR OU BL E
RELAY
RS-485 for
annunciators
Auxiliary Relay
Alarm Relay
Supervisory
Relay
Trouble Relay
Unfiltered24V
supply
Connect to
MR-2306-R6
Relay module
Connect to
MR-2300-PR
JW2 - ON- when
MR-2306-R6 not
connected
JW1 - ON- when
MR-2300-PR
not connected
POWER
SIGNAL
JW6-Normally Open
JW5-Normally Open
JW4 -Normally Short
JW7
For front panel programming use CFG-300
configuration tool not UL-864 or ULC-S527
listed. Please refer to Document LT-922 for
details
Initiating zones 1 to 6
Power supply and
control interface, including
AC power and battery supplies.
Indicating/Releasing zones 1 to 4
P3 P4
TO MR-2300-PR MODULE TO MR-2306-R6 RELAY MODULE
SYSTEM
RESET
AC ON
X
M
?
GROUND FAULT
CPU FAIL
ABORT
RELEASE
COMMON ALARM
COMMON SUPV
REMOTETROUBLE
COMMONTROUBLE
BATTERYTROUBLE
SIGNAL
SILENCE
AUXILIARY
DISCONNECT
LAMP
TEST
ALM/SUP/TBL/
BLDG AUDIBLE SIL
RAC2
(ZONE 4)
RAC1
(ZONE 3)
NAC2
(ZONE 2)
NAC1
(ZONE 1)
IAC6
(ZONE 1)
IAC5
(ZONE 5)
IAC4
(ZONE 4)
IAC3
(ZONE 3)
IAC2
(ZONE 2)
IAC1
(ZONE 1)
PRE
RELEASE
JW5
JW4
JW4 -Factory Use Only
Always Short
JW5- Factory Use Only
Always Open
Main Board Core Board

18
Cable and Jumper Connections for Main Board, Core Board and Adder Modules
Table 1 Connectors and Jumpers on the Main Fire Alarm Board
Table 2 Connectors and Jumpers on the Core Board
5.2 MR-2300-A Input Class-A Converter Adder Module
Figure 4 MR-2300-A Input Class-A Converter Adder Module
There are no jumpers or cables to set on this module, just wiring from the converter (wires are
fixed here) to the Main Fire Alarm Board.
Initiating circuits must be wired from the MR-2300-A module to the Main Fire Alarm board. For
example, Initiating circuit 1 positive (red) and negative (black) wires are connected to the
positive and negative terminals (respectively) of Initiating circuit 1 on the Main Fire Alarm
Board. From the MR-2300-A converter Initiating circuits are wired out to the devices from the
JW1 Remove this jumper if MR-2300-PR is connected.
P4 Cable from connector P1 of the MR-2306-R6 Relay Adder Module connects here.
Otherwise not used.
JW2 Remove this jumper if an MR-2306-R6 Relay Adder Module is used.
JW4
Shorted if there is no external unit on RS485. This jumper works as ‘end of line’ jumper. If
one or more units are connected on RS485, only short on the last connected unit. JW4 on
all other units should be left open.
JW5
Normally open. To reset the password, place jumper here and power down the panel (both
AC power and batteries). Then power up the panel again, the password is restored to the
default after system startup. Once the system has reset, REMOVE the jumper from the pins
at JW5.
JW6 Normally open to BLOCK configuration via modem, PC with a UIMA converter module or a
CFG-300 Configuration Tool. Place jumper here to ALLOW any type of configuration.
JW4 Factory Use Only. Always Short.
JW5 Factory Use Only. Always Open.
BLK RED
BLK R EDBLK REDBLK REDBLK R EDBLK RED
- DET1 OUT+- DET2 OUT+- DET3 OUT +- DET4 OUT+- DET 5 OU T+- D ET6 OU T+ - DET1 RET+- D ET2 R ET+- D ET3 R ET+- DET4 RET+- DET5 RET+- DET6 RET+
mounting hole for
#6-32 screws
All these pins comes with
red and black wires which
are connect ed to t he
detection circuit on the
main fi re alar m boar d. Red
is positive and black is
negative
ICAC -306
mounting hole for
#6-32 screws
MR-2300-A

19
Cable and Jumper Connections for Main Board, Core Board and Adder Modules
positive and negative terminals marked DET OUT and the circuit return wires are brought back
to the converter module to positive and negative terminals marked DET RET.
5.3 MR-2300-NC2 Output Class-A Converter Adder Module
Figure 5 MR-2300-NC2 Output Class-A Converter Adder Module
Indicating circuits must be wired from the MR-2300-NC2 to the main Fire Alarm board. For
example indicating circuit 1 positive (red wire) and negative (black wire) is wired from the
Class A converter module to the positive and negative terminals of Indicating circuit 1 on the
Main Fire Alarm board.
The actual indicating zone is wired from the SIGNAL OUT positive and negative to the
signaling devices and then wired back to the SIGNAL RET positive and negative.
Relay Adder Module
Cable from P1 of the MR-2306-R6 is connected to P4 on the Main Fire Alarm Board. The
jumpers located above each relay on the MR-2306-R6 are used to configure the relays. The
jumpers located below the relays are used to select either normally open contacts or normally
closed contacts.
Figure 6 MR-2306-R6 six relay adder module
P1: Cable from MR-2306-R6 Relay Adder Module connects to P4 on Main Fire Alarm Board.
- SI G1 OUT +- SIG2 OUT+ - SIG1 RET+- SIG2 RET+
BLK RED
BLK RED
mounting hole for
#6-32 screws
OCAC -302
mounting hole for
#6-32 screws
MR-2300-NC2
NO / NC C
RELAY 1
NO/NC C
RELAY 2
NO/NC C
RELAY 3
NO/NC C
RELAY 4
C
RELAY 5
NO / NC C
RELAY 6
NO/NC
mounting hole
for #6-32 screws mounting hole
for #6-32 screws
INDIVIDUAL GREEN
RELAY STATUS LEDs
Connect to P6 on the
main fire alarm board
6

20
Cable and Jumper Connections for Main Board, Core Board and Adder Modules
The correlation of the relays are fixed and is as follows:
5.4 Polarity Reversal and City Tie Module (Model MR-2300-PR)
Figure 7 Polarity reversal and city tie module
The following hardware configuration must be performed before installing the MR-2300-PR.
Table 3 MR-2300-PR jumper settings
The Alarm Transmit signal to the MR-2300-PR can be programmed to turn OFF when signal
silence is active. This allows the City Tie Box to be manually reset. On subsequent alarms the
silenceable signals will resound and the City Tie Box will be retriggered. See 8. Alarm Xmit-Sil.
on page 49 for more information.
The Trouble Transmit signal to the MR-2300-PR can be programmed to delay AC power fail
for 0, 1 or 3 hours if this is the only system trouble. See 9. Pwr Fail Tmr on page 50 for more
information.
Relay1 Relay2 Relay3 Relay4 Relay5 Relay6
Active State Hazard 1
Alert
Hazard 1
Alarm
Hazard 1
Release
Hazard 2
Alert
Hazard 2
Alarm
Hazard 2
Release
P1 Cable connects to P3 on the Main Board
P2 & JW4 Not used. Jumper JW4 remains on board.
POLARITY
REVERSAL
ALARM
POLARITY
REVERSAL
SUPV
CITY
TIE
+ | - + | - + | -
JW4
P1 P2
Mounting hole for
#6-32 screws
Mounting hole for
#6-32 screws