Secutron MR-2306-DDR User manual

Installation and Operation Manual LT-906SEC Rev. 4
June 2023
MR-2300 Series
LCD Fire Alarm Control Panel

3
Table of Contents
1.0 FCC Notice 9
1.1 Notice for all MR-2300 LCD Series Built-in UDACTs Sold in the U.S.A. ....................... 9
2.0 Introduction 11
2.1 Overall Features ............................................................................................................ 11
3.0 Conventions 12
3.1 Circuits ........................................................................................................................... 12
3.2 Zone ............................................................................................................................... 12
3.3 Events ............................................................................................................................ 12
3.4 Wiring Styles .................................................................................................................. 12
4.0 System Components 13
4.1 Main Fire Control Panel ................................................................................................. 13
4.2 Relay Module: 12 Relays ............................................................................................... 14
4.3 Relay Modules: Six Relays ............................................................................................ 14
4.4 Polarity Reversal/City Tie ............................................................................................... 14
4.5 Remote Annunciators .................................................................................................... 14
4.6 Smart Relay Module ...................................................................................................... 15
4.7 Input Class A Converter: Six Circuits ............................................................................. 15
4.8 Output Class A Converter: Four Circuits ........................................................................ 16
4.9 Output Class A Converter: Two Circuits ........................................................................ 16
4.10 Active End-of-Line Resistor ........................................................................................... 16
4.11 Enclosures ..................................................................................................................... 16
4.12 Additional Fire Alarm System Accessories .................................................................... 17
5.0 Mechanical Installation 18
5.1 Installing the MR-2312-DDR Enclosure ......................................................................... 18
5.2 Installing the MR-2306-DR/MR-2306-DDR Enclosure ................................................... 20
5.3 Mounting the Board to the Chassis ................................................................................ 20
5.4 MMX-BBX-1024DS and MMX-BBX-1024DSR Mechanical Installation ......................... 21
5.5 Installing the Adder Modules .......................................................................................... 22
6.0 Connections, DIP Switches, and Jumpers 24
6.1 Main Fire Alarm Board ................................................................................................... 24

4
6.2 MR-2300-A Input Class A Converter Adder Module ...................................................... 26
6.3 MR-2300-NC4/MR-2300-NC2 Output Class A Converter Adder Module ...................... 27
6.4 Relay Adder Modules ..................................................................................................... 28
6.5 MR-2306-R6 Six Relay Adder Module ........................................................................... 29
6.6 Polarity Reversal and City Tie Module (Model MR-2300-PR) ....................................... 29
6.7 Annunciators .................................................................................................................. 30
6.8 MR-2312-SR12/MR-2312-SW12 Smart Relay Module .................................................. 30
6.9 MR-2300T Remote Trouble Indicator ............................................................................. 30
7.0 Field wiring 31
7.1 Main Fire Alarm Board Field Wiring ............................................................................... 31
7.2 Relay Adder Module Wiring ........................................................................................... 34
7.3 Connecting to a 3G4010CF Interface Device ................................................................ 36
7.4 Polarity Reversal and City Tie Module (MR-2300-PR) Wiring ....................................... 37
7.5 Power Supply Connection .............................................................................................. 38
7.6 Wiring Tables and Information ....................................................................................... 39
7.7 Supervised Auxiliary Power (regulated) ......................................................................... 40
7.8 Auxiliary Power (unregulated) ........................................................................................ 40
8.0 Turning on the Panel 41
8.1 Before Connecting the Power ........................................................................................ 41
8.2 Connecting the Power .................................................................................................... 42
8.3 Troubleshooting ............................................................................................................. 43
9.0 Indicators, Controls and Operations 44
9.1 Common Indicators ........................................................................................................ 44
9.2 Common Controls .......................................................................................................... 45
9.3 Common Relays ............................................................................................................. 46
9.4 Circuit Types .................................................................................................................. 47
9.5 Evacuation Codes .......................................................................................................... 49
9.6 Fire Alarm Operation ...................................................................................................... 50
10.0 Supported Protocols and Devices 51
10.1 Synchronous Strobes ..................................................................................................... 51
10.2 Signal Silence on Strobes .............................................................................................. 51
10.3 System Sensor’s i3 Devices ........................................................................................... 51
11.0 Configuration 53
11.1 Accessing Configuration Mode ...................................................................................... 54

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11.2 Command Menu ............................................................................................................ 55
11.3 Panel Config (Command Menu) .................................................................................... 56
11.4 Feature Config ............................................................................................................... 56
11.5 Config. Info. (Command Menu) ...................................................................................... 63
11.6 Set Time (Command Menu) ........................................................................................... 64
11.7 Set Password (Command Menu) ................................................................................... 65
11.8 View EventLog (Command Menu) ................................................................................. 65
11.9 Clear EventLog (Command Menu) ................................................................................ 66
11.10 Walk Test (Command Menu) ......................................................................................... 66
11.11 I3 Loop Test (Command Menu) ..................................................................................... 67
11.12 Dialer Config (Command Menu) .................................................................................... 68
11.13 Test Dialer (Command Menu) ........................................................................................ 74
11.14 Bypass Det Ckt (Command Menu) ................................................................................ 76
11.15 Bypass NAC Ckt (Command Menu) .............................................................................. 76
11.16 Aux. Disc. (Command Menu) ......................................................................................... 76
11.17 Exit (Command Menu) ................................................................................................... 76
11.18 Zone messages ............................................................................................................. 77
11.19 AC Power Fail ................................................................................................................ 78
11.20 Battery trouble ................................................................................................................ 78
11.21 Ground Fault .................................................................................................................. 79
11.22 Remote Annunciator ...................................................................................................... 79
11.23 Four-Wire Smoke Detector Supply ................................................................................ 79
11.24 Supervised Auxiliary Supply .......................................................................................... 80
11.25 City Tie Polarity Reversal - MR-2300-PR/Relay Module ............................................... 80
12.0 Appendix A: Compatible Receivers 82
13.0 Appendix B: Reporting 83
13.1 Ademco Contact-ID ........................................................................................................ 83
13.2 Security Industries Association SIA-DCS ...................................................................... 84
14.0 Appendix C: Specifications 85
15.0 Appendix D: Power Supply and Battery Calculations 88
16.0 Warranty and Warning Information 90

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List of Figures
Figure 1 MR-2300 LCD Series ..................................................................................................... 13
Figure 2 Enclosure dimensions, surface mount ........................................................................... 18
Figure 3 Enclosure dimensions, semi-flush mounting and trim ring ............................................. 19
Figure 4 Backbox and Trim Ring Dimensions for Models MR-2306-DR/MR-2306-DDR ............. 20
Figure 5 Flush trim detail (from above) ........................................................................................ 20
Figure 6 MMX-BBX-1024DS and MMX-BBX-1024DSR installation instructions and dimensions 21
Figure 7 Installation of adder modules for MR-2312 LCD ............................................................ 22
Figure 8 Installation of adder modules for MR-2306 LCD ............................................................ 23
Figure 9 Main fire alarm board connections, DIP switches and jumpers for MR-2312 LCD ........ 24
Figure 10 Main fire alarm board connections, DIP switches and jumpers for MR-2306 LCD ........ 25
Figure 11 MR-2300-A Input Class A converter adder module ....................................................... 26
Figure 12 MR-2300-NC4/MR-2300-NC2 Output Class A converter adder module ........................ 27
Figure 13 MR-2312-R12 twelve relay adder module ...................................................................... 28
Figure 14 MR-2312-R12/MR-2306-R6 Relay programming ........................................................... 28
Figure 15 MR-2306-R6 six relay adder module ............................................................................. 29
Figure 16 Polarity reversal and city tie module .............................................................................. 29
Figure 17 Initiating circuit – Class B wiring ..................................................................................... 31
Figure 18 Initiating circuit– Class A wiring ...................................................................................... 32
Figure 19 Indicating circuit – Class B wiring ................................................................................... 32
Figure 20 Indicating circuit –Class A wiring .................................................................................... 33
Figure 21 Four-wire smoke detector - Class B wiring .................................................................... 33
Figure 22 Dialer wiring ................................................................................................................... 34
Figure 23 Relay per zone (MR-2312-R12) Terminal connection .................................................... 34
Figure 24 Relay per zone (MR-2306-R6) Terminal connection ...................................................... 35
Figure 25 Connecting an FACP to a 3G4010CF Interface Device ................................................. 36
Figure 26 Polarity reversal and city tie module terminal connection .............................................. 37
Figure 27 Power supply connection ............................................................................................... 38
Figure 28 Battery connections ........................................................................................................ 42
Figure 29 LCD Display and control buttons .................................................................................... 44
Figure 30 Lamp test ....................................................................................................................... 46
Figure 31 Evacuation Codes .......................................................................................................... 49
Figure 32 MR-2300 main LCD display ........................................................................................... 54
Figure 33 Enter passcode .............................................................................................................. 54
Figure 34 Command Menu ............................................................................................................. 55
Figure 35 MR-2300 Config menu ................................................................................................... 56
Figure 36 Feature Config menu ..................................................................................................... 56
Figure 37 The event log ................................................................................................................. 65
Figure 38 Walk test confirmation .................................................................................................... 66
Figure 39 Walk test zones .............................................................................................................. 66
Figure 40 Walk test active .............................................................................................................. 66
Figure 41 i3 loop test confirmation ................................................................................................. 67
Figure 42 i3 test zones ................................................................................................................... 67
Figure 43 i3 test not ready .............................................................................................................. 68

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Figure 44 The selected zone is not i3 type .................................................................................... 68
Figure 45 Dialer Config menu ........................................................................................................ 69
Figure 46 Account Info menu ......................................................................................................... 69
Figure 47 Telephone Line menu .................................................................................................... 70
Figure 48 Report Options menu ..................................................................................................... 71
Figure 49 Time Parameter ............................................................................................................. 72
Figure 50 Dialer Test menu ............................................................................................................ 74
Figure 51 Detection circuit message .............................................................................................. 77
Figure 52 Indicating circuit message .............................................................................................. 77
Figure 53 AC Power Fail message ................................................................................................ 78
Figure 54 Battery trouble message ................................................................................................ 78
Figure 55 Ground Fault message .................................................................................................. 79
Figure 56 Remote Annunciator message ....................................................................................... 79
Figure 57 Four-wire smoke detector supply message ................................................................... 80
Figure 58 Supervised auxiliary supply message ............................................................................ 80
Figure 59 Module missing message .............................................................................................. 81
Figure 60 Module trouble message ................................................................................................ 81

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List of Tables
Table 1 MR-2300 LCD Series Comparison Chart ....................................................................... 13
Table 2 Power Supply Ratings .................................................................................................... 38
Table 3 Initiating Circuit Wiring ................................................................................................... 39
Table 4 Indicating Circuit Wiring ................................................................................................. 39
Table 5 RS-485 Wiring to Annunciators and other Devices ........................................................ 40
Table 6 Troubleshooting ............................................................................................................. 43
Table 7 i3 detector LEDs ............................................................................................................. 52
Table 8 Settings permitted in UL864 ........................................................................................... 53
Table 9 Feature Config Menu ..................................................................................................... 57
Table 10 i3 Detector LEDs while in Test Mode ............................................................................. 68
Table 11 Auto Test Time and Cellular Report Date ...................................................................... 73
Table 12 Compatible Receivers .................................................................................................... 82
Table 13 Ademco Event Codes .................................................................................................... 83
Table 14 SIA Event Codes ............................................................................................................ 84
Table 15 MR-2300 LCD Series Specifications .............................................................................. 85
Table 16 MR-2300 LCD Series System Modules and Annunciators ............................................ 86

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1.0 FCC Notice
1.1 Notice for all MR-2300 LCD Series Built-in UDACTs Sold in
the U.S.A.
Secutron's MR-2300 LCD Series BUILT-IN UDACT Digital Communicator described in this
manual is listed by Underwriters Laboratories Inc. (ULI) for use in slave application in
conjunction with a Listed Fire Alarm Control Panel under Standard 864 (Control Units and
Accessories for Fire Alarm Systems). These Communicators comply with the National Fire
Protection Association (NFPA) performance requirements for DACTs and should be installed
in accordance with NFPA 72 Chapter 26 Supervising Station Fire Alarm Systems. These
Communicators should be installed in accordance with this manual; the National Electrical
Code (NFPA 70); and/or the local Authority Having Jurisdiction (AHJ).
1.1.1 FCC Notice
This equipment complies with Part 68 of the FCC rules and the requirements adopted by the
ACTA. On the telco transformer of this equipment is a label that contains, among other
information, a product identifier in the format US:AAAEQ##TXXXX. If requested, this number
must be provided to the telephone company. This equipment is capable of seizing the line.
This capability is provided in the hardware.
Type of Service: The Communicator is designed to be used on standard device telephone
lines. It connects to the telephone line by means of a standard jack called the USOC RJ-11C
(or USOC FJ45S). Connection to telephone company provided coin service (central office
implemented systems) is prohibited. Connection to party lines service is subject to state tariffs.
Telephone Company Procedures: The goal of the telephone company is to provide you with
the best service it can. In order to do this, it may occasionally be necessary for them to make
changes in their equipment, operations or procedures. If these changes might affect your
service or the operation of your equipment, the telephone company will give you notice, in
writing, to allow you to make any changes necessary to maintain uninterrupted service.
In certain circumstances, it may be necessary for the telephone company to request
information from you concerning the equipment which you have connected to your telephone
line. Upon request of the telephone company, provide the FCC registration number and the
ringer equivalence number (REN); both of these items are listed on the equipment label. The
sum of all of the REN’s on your telephone lines should be less than five in order to assure
proper service from the telephone company. In some cases, a sum of five may not be usable
on a given line.
Notes: The Ringer Equivalence Number (REN) assigned to each terminal device
provides an indication of the maximum number of terminals allowed to be
connected to a telephone interface. The termination on an interface may consist
of any combination of devices subject only to the requirement that the sum of the
Ringer Equivalence Numbers of all the devices does not exceed 5.
The REN for this product is part of the product identifier that has the format
US:AAAEQ##TXXXX. The digits represented by ## are the REN without a
decimal point (e.g., 03 is a REN of 0.3). For earlier products, the REN is
separately shown on the label.
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If Problems Arise: If any of your telephone equipment is not operating properly, you should
immediately remove it from your telephone line, as it may cause harm to the telephone
network. If the telephone company notes a problem, they may temporarily discontinue service.
When practical, they will notify you in advance of this disconnection. If advance notice is not
feasible, you will be notified as soon as possible. When you are notified, you will be given the
opportunity to correct the problem and informed of your right to file a complaint with the FCC.
Contact your telephone company if you have any questions about your phone line. For device
repairs or replacements, please visit our RMA Request page to submit your request.
https://mircom.com/technical-support/submit-return-material-authorization-form/

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2.0 Introduction
Secutron's MR-2300 LCD Series Fire Alarm Control Panels are Digital Signal Processor
(DSP) based fire panels. The MR-2300 LCD Series provides a maximum of 12 supervised
Class B or A Initiating circuits, and maximum of four supervised Class B or A indicating
circuits. All circuits are supervised for opens and ground faults, and indicating circuits are
supervised for shorts. Optional modules include relay, polarity reversal and city tie and Class A
Converters for initiating and indicating circuits. Semi-flush or surface mountable backboxes
can be used for retrofits and on new installations.
2.1 Overall Features
•The basic unit has six Class B initiating circuits, which may be configured as Class A
using input Class A converter adder module. Each initiating circuit can be configured as
alarm, verified alarm, water flow alarm, sprinkler alarm, latching or non-latching
supervisory, monitor or trouble circuits.
•The basic unit has two power limited Class B indicating circuits. Each indicating circuit
may be configured as Class A using an output Class A converter adder module. Each
indicating circuit may be configured as silenceable signal, non-silenceable signal,
silenceable strobe, non-silenceable strobe. The audible signal may be Steady, Temporal
Code, California Code, or March Time.
•Each initiating and indicating circuit can be individually disconnected via the keypad and
LCD display with password access.
•Configurable signal silence inhibit, auto signal silence, and one-man walk test.
•Non-resettable auxiliary supply 500 mA maximum.
•Four-wire resettable smoke power supply 300 mA maximum class B with EOL relay.
•Relay contacts for common alarm, common supervisory and common trouble all non-
disconnect-able and auxiliary alarm relay (disconnectable).
•RS-485 interface for RA-1000 Series remote multiplex Annunciators, LCD Annunciators
and smart relay adder.
•Optional modules for additional relay circuits, city tie and polarity reversal signaling.
•Extensive transient protection.
•With or without built-in UDACT (Digital Alarm Communicator Transmitter).
•Easy configuration of the panel using front LCD display and keypad.
•Remote dial up (with built-in UDACT version) for event log checking and/or configuration
changing.
•Laptop programmer for direct configuration changing and log checking.
Note: Installation of the MR-2300 LCD Series fire alarm control panel should be in
accordance with Canadian Electrical Code Part 1, ULC-S524 installation of Fire
Alarm System, National Electrical Code NFPA 70 and NFPA 72. Final
acceptance subject to the Local Authority Having Jurisdiction (AHJ).
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3.0 Conventions
3.1 Circuits
Refers to an actual electrical interface for initiating (detection) and indicating (signal or NAC)
or relays
3.2 Zone
Is a logical concept for a Fire Alarm Protected Area, and consists of at least one circuit.
Often the terms zone and circuit are used interchangeably, but in this manual circuit refers
only to a physical electrical loop.
3.3 Events
There are events associated with every initiating, indicating and common circuit of the fire
panel displayed via the LCD.
3.4 Wiring Styles
Initiating and indicating circuits are Class B (formerly 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 circuits to Class A. This is done without decreasing
the number of circuits, which remains the same as in Class B.
Changing the indicating circuits to Class A requires an MR-2300-NC4 adder board which will
convert four indicating zones from Class B circuits to Class A or an MR-2300-NC2 adder
board which will convert two indicating zones from Class B circuits to Class A.

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4.0 System Components
4.1 Main Fire Control Panel
Figure 1 MR-2300 LCD Series
All MR-2300 LCD Series panels have the following features:
•LCD display
•Two six-zone MR-2300-A Input Class A converter adder modules may be used for
Class A wiring of Initiating circuits.
•One MR-2300-NC4 Output Class A converter adder module may be used for Class A
wiring of the indicating circuits.
•Common alarm, common supervisory and common trouble relays, auxiliary alarm relay
(disconnectable), an RS-485 interface for Remote Annunciators, a non-resettable
auxiliary supply, and a resettable four wire smoke detector power supply.
•Used with BA-110 (10 Ah) (Sota Enertech model SA12120) batteries (two required).
Table 1 MR-2300 LCD Series Comparison Chart
Model Number of
zones
Number of
initiating
circuits
On board Dialer Door Color
MR-2306-DDR 6 6 y red
MR-2306-DR 6 6 n red
MR-2312-DDR 12 12 y red

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4.2 Relay Module: 12 Relays
4.3 Relay Modules: Six Relays
4.4 Polarity Reversal/City Tie
4.5 Remote Annunciators
Model Description
MR-2312-R12 12 relay adder
module
Model Description
MR-2306-R6 Six relay adder module
Model Description
MR-2300-PR Polarity reversal and/or city tie module
Model Description
MR-2300-LCDW Remote annunciator module, LCD display, white
painted box
MR-2300-LCDR Remote annunciator module, LCD display, red
painted box
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 C
RELAY 7
NO/NC C
RELAY 8
C
RELAY 9
NO/NC C
RELAY 10
NO/NC C
RELAY 11
NO/NC C
RELAY 12
NO/NC NO/NC
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
POLARITY
REVERSAL
ALARM
POLARITY
REVERSAL
SUPV
CITY
TIE
+ | - + | - + | -
JW4
P1 P2

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4.6 Smart Relay Module
4.7 Input Class A Converter: Six Circuits
MR-2312-ATW 16 zone remote annunciator with white enclosure
MR-2312-ATR 16 zone remote annunciator with red enclosure
MR-2306-ATW 8 Zone remote annunciator, white enclosure
MR-2306-ATR 8 Zone remote annunciator, red enclosure
RAM-1032TZDS
RAM-1032TZDS-CC
Model RAM-1032TZDS Main Chassis Remote
Annunciator with 16 Bi-colored LEDs and 32
trouble LEDs. Model RAM-1032TZDS-CC is the
same as the RAM-1032TZDS, except it has
conformal coating and is to be used in a MMX-BB-
1001WPA/MMX-BB-1001WPRA weather
protected box.
Model Description
MR-2312-SW12 Smart relay module (12 relays) with white enclosure
MR-2312-SR12 Smart relay module (12 relays) with red enclosure
Model Description
MR-2300-A Input Class A converter module (six circuits). This
module has built in active end-of-line resistors.
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+

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4.8 Output Class A Converter: Four Circuits
4.9 Output Class A Converter: Two Circuits
4.10 Active End-of-Line Resistor
The MR-2300-X 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.
4.11 Enclosures
Model Description
MR-2300-NC4 Output Class A converter module (four circuits)
Model Description
MR-2300-NC2 Output Class A converter module (two circuits)
Model Description
MR-2300-X Active end-of-line resistor without plate
MR-2300-XR Active end-of-line resistor with end-of-line red plate
MMX-BB-1001D White Enclosure for one annunciator.
MMX-BB-1001DR Red Enclosure for one annunciator.
MMX-BB-1001DB Black Enclosure for one annunciator.
MMX-BB-1001DS Enclosure for one annunciator with stainless
steel door.
MMX-BB-1001WPA White enclosure for one annunciator rated for
outdoor environment, wet location.
MMX-BB-1001WPRA Red enclosure for one annunciator rated for
outdoor environment, wet location.
- SIG1 OUT+- SIG2 OUT+
- SIG1 RET +- SI G2 RET+
BLK RED
BLK RED
- SIG3 OUT+- SIG4 OUT+
- SIG3 RET +- SI G4 RET+
BLK RED
BLK RED
- SIG1 OUT+- SIG2 OUT+
- SIG1 RET +- SI G2 RET+
BLK RED
BLK RED
BLACK
RED

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4.12 Additional Fire Alarm System Accessories
MR-2300T Remote trouble indicator (ULC and ULI approved)
MP-300 End-of-line resistor plate, 3.9 kȍ(ULC and ULI approved)
MP-300R End-of-line resistor plate, red (ULC approved)
MMX-BC-160R External battery cabinet (ULC and ULI approved)

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5.0 Mechanical Installation
5.1 Installing the MR-2312-DDR Enclosure
Install the MR-2300 LCD Series fire alarm panel enclosure as shown below. Mount enclosure
surface mount using the four mounting holes, as shown and the screws provided.
Figure 2 Enclosure dimensions, surface mount
The enclosure may be semi-flush mounted using the trim ring model MR-2312-FT (BLACK),
see Figure 3. Remove the door (also disconnect the ground strap), the dead front and semi-
26.0”
11.0”
1.5”
20.5”
4.0”
14.5”
4.5”
Mounting Holes for
Surface Mounting
Mounting Holes for
Surface Mounting

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flush mount the enclosure into the wall. Peel the adhesive cover from the trim ring and stick to
the wall surface around the enclosure, after the wall is finished.
Figure 3 Enclosure dimensions, semi-flush mounting and trim ring
26.0”
11.0”
1.5”
20.5”
4.0”
14.5”
4.5”
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
Mounting Holes for
Surface Mounting
Mounting Holes for
Surface Mounting
14.5”
17”
28.5”
PLACE MR-2312-FT TRIM RING OVER BACKBOX
Adhere trim ring to
wall surface
around the
MR-2300 backbox

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5.2 Installing the MR-2306-DR/MR-2306-DDR Enclosure
Figure 4 Backbox and Trim Ring Dimensions for Models MR-2306-DR/MR-2306-DDR
5.3 Mounting the Board to the Chassis
Figure 5 shows a cross-section of the semi-flush mounted enclosure and the trim ring. Make
sure to allow a minimum depth of 1” above the wall surface for proper door opening.
Figure 5 Flush trim detail (from above)
3.5”
1”
1.5”
4.5”
14.5”
20.0”
14.5”
4.0”
11.0”
Mounting Holes for
Surface Mounting
Mounting Holes for
Surface Mounting
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
17"
22.5"
PLACE MR-2306-FT TRIM RING OVER BACKBOX
Adhere trim ring to
wall surface around
the MR-2300
backbox
TRIM RING
WALL
WOOD OR
METAL STUD
BACKBOX