Providing Fail-Safe Performance
Fire doors and shutters are found in virtually all types
of commercial buildings including manufacturing
facilities, warehouses, hospitals, stadiums, sports
arenas, convention centers and food court areas. They
serve as physical barriers to stop the spread of fire and
smoke from one area to another. LiftMaster
®
release
devices enhance the performance of these safety
barriers by controlling the closure of the fire doors
upon receipt of a signal from a smoke detector, heat
detector or building fire alarm system. The devices
are an integral part of the door or shutters fusible link
release assembly, providing fail-safe performance.
Ultimately, LiftMaster
®
release devices are designed
to minimize property damage and provide increased
safety for all building occupants. They provide a
time-delayed release of the door for a period of up to
60 seconds to permit passageway clearance prior to
door closure. Optional Battery Backup can ensure the
door will not be released as a result of power failure (in
non-alarm conditions) for up to 72 hours. For added
safety of individuals in or around the opening, a voice
annunciator, strobe or horn notification device can be
installed to provide a verbal, visual or auditory warning
message prior to door closure.
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Fire Door
Release Devices
LM21AFCB
LM21XP
LM21XPBB
®
UL864 Revision 9 Compliant
Programmable DIP Switch delay setting - Either 10, 20, 30, or 60 seconds delay of
door release to permit passage clearance
Internal Battery Backup system
Obstruction cycling – working in conjunction with the door’s electrical safety edge,
reverses the door if an obstruction is encountered
Motor voltage sensing
Test Keyswitch – permits floor-level testing of the system
Model LM21AFCBVB is equipped with a voice board to broadcast a pre-recorded voice
evacuation message
LM21XPBB Extended Performance Release Device
Functions as Localized Fire Alarm System
The XP release device provides a fail-safe release mechanism for non-motorized doors and acts as an interface
between the door and fire alarm system. The device requires 24VDC power from an approved UL1481 regulated
power supply with Battery Backup, such as a fire alarm control panel. Therefore, installation will require
coordination with a fire panel installer. Features include:
Versatility allows the XPBB release device to operate on 120VAC, 24VAC, or 24VDC power sources. Internal
Battery Backup allows the release device to stand-alone from the fire alarm system and act independently in
the event of a power outage. The system can provide 24VDC power for up to 4 smoke detectors and 2 horn
strobes, mounted on either side of the door. Programmable delay settings, close door detection, diagnostic
LEDs, localized testing and reset capabilities are all also standard. Features include:
UL864 Revision 9 Compliant
Programmable DIP Switch delay setting - either 10, 20, 30, or 60 seconds delay of
door release to permit passage clearance
Inputs for normally open 2- or 4-wire detectors and 4-wire normally closed detectors
Trouble and alarm relays for communication with the fire alarm control panel, if required
Audible trouble sounder to indicate when the release device is not operational
On board diagnostic LEDs for easy trouble shooting
Testing function allows routine fire door testing without requiring activation of the
smoke detector
Model LM21XPBBVB is equipped with a voice board to broadcast a pre-recorded voice
evacuation message
LM21XP High Performance Release Device
An Interface Between Central Alarm System and Door
UL864 Revision 9 Compliant
Programmable DIP Switch delay setting –Either 10, 20, 30, or 60 seconds delay of
door release to permit passageway clearance
Close door detection – Prevents door release if the door is kept in the closed
position and eliminates door reset service calls or potential system damage
On board diagnostic LEDs for early trouble shooting
Testing function allows routine fire door testing without requiring activation of the
central alarm system; easy reset function returns the device to a standby state
LM21AFCB Advance Fire Control Release Device
For Fully Automated Door Operation
The AFCB release device is designed to be used in conjuction with a standard commercial door operator to
provide a fully automated door closing system. For use with motorized doors incorporating a reversing electric
safety edge. This 120VAC device can power up to 4 smoke detectors and 2 horn/strobes or speaker strobes.
This system combines state-of-the-art functionality and advanced features typically found on special-order fire
door operators. Features include:
Fire Door Release Devices
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Alarm Signal
Notification
Appliance
Alarm Notification
Appliance Circuit
Main Power
Standby Power
Alarm Initiation Devices
Alarm Initiating
Device Circuit
Trouble Signal
Notification Appliance
Alarm Signal
Notification Appliance
End 0f-Line
Device
Fire
Alarm
Control
System
Relay Module
Release Device
Each LiftMaster
®
Fire Door Release Device serves as an interface between the smoke detection system
and fire door. As the central control, the fire door release system receives and interprets all signals to
instruct the fire door and all warning devices to act appropriately.
LiftMaster
®
offers a choice of 3 different models, FOR BOTH MOTORIZED AND NON-MOTORIZED
APPLICATIONS. For motorized applications, the appropriate release device works in conjunction with a
standard, commercial electromechanical or solid-state operator to create an enhanced, yet economical,
fire door operating system. All devices ensure the continued protection and code compliance for the fire
door or shutter by enabling routine operation inspections without activating the primary alarm system
and without disturbing building occupants. These devices are C-UL-US, FM and CSFM listed and are
compliant with the NFPA 80 requirement for a fail-safe door holder/release device.
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Installation Information
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Non-motorized Fire Door System Motorized Fire Door System
Main Power
Alarm Initiation Devices
Alarm Initiating
Device Circuit
Alarm Signal
Notification Appliance
End 0f-Line
Device
Release Device
Application:
Release Device As Component
Of Fire Alarm System
Application:
Release Device As
Stand-Alone System
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Accessories
Liftmaster
®
Fire Door Release Devices offer a choice of accessories and options that provide added
features and flexibility to upgrade your system.
Smoke Detectors
Smoke detectors can be used to provide a local alarm signal that activates the release
device. Three types of detectors are available: Photoelectric (available in 12/24VDC
in 2 or 4-wire configurations or 120VAC in 4-wire configurations only), Photo-thermal
detectors (available in 12/24VDC in 2- or 4- wire configurations or 120VAC in 4-wire
configurations only) or Ion detectors (available in 120VAC 4-wire configurations only).
Photoelectric detectors are best suited to detect slow, smoldering fires while Ion
detectors are best suited to detect fast flaming fires. Each type of detector can identify
both types of fires, but response times may vary slightly. A fire alarm system design
engineer should be consulted for the most suitable choice for a given installation.
Notification Devices
Notification devices provide a visual and/or audible warning notification. Available types
include a stand-alone horn, stand-alone strobes or a combination horn/strobe. Each type
is available in 12VDC, 24VDC or 120VAC. All notification devices are ADA-Compliant.
Speaker/Strobe
An audible/visible notification device used in conjunction with the optional Voice Board.
The speaker/strobe is available in 12VDC, 24VDC or 120VAC. A stand-alone speaker is
also available. All speaker strobes are ADA-Compliant.
Heat Detectors
Heat detectors provide an alarm signal that activates the release device when the
ambient temperature reaches a fixed point; available in fixed temperatures of 135 and
194 degrees F.
VB - Voice Board
A solid-state speech module, the optional VB may be ordered factory-installed within
the XPBB or AFCB models or purchased separately for retro-fit possibilities. In an
alarm condition, the VB will provide a warning tone followed by a voice message/
warning prior to door closure. The VB can be used with up to 2 speaker strobes or
stand-alone speakers.
Options
Transformer
Used in conjunction with an AFCB model when line voltages other than 120VAC are
present at the door installation. Transformers are mounted within an UL508 approved
enclosure and are available in the following two options:
• 90-TRNSFRMR-2 (208VAC 1/3 Phase, 230/460VAC 3 phase)
• 90-TRNSFRMR-5 (575VAC 3 Phase)
FDR Plug-In Option Card
For use in conjunction with the LiftMaster
®
Logic 3-equipped operator; the FDRCARD
facilitates field connections between the LM21AFCB and the operator by reducing the
standard 10-wire interconnection to a basic 4-wire phone cord. Both the FDRCARD and
the AFCB are equipped with an RJ-11 phone jack as standard to accept the phone cord.
The FDRCARD also eliminates the need for ordering the operator with auxiliary open
and close limits, which are required for all non-Logic 3 operators.
Architectural Specifications
Architectural Specifications for the LiftMaster
®
Fire Door
Release Devices are available to download at:
www.liftmaster.com
For all other Chamberlain Professional Product
architectural specifications please visit:
http://specs.chamberlain.com
Features & Benefits
09/07
©2007 The Chamberlain Group, Inc.
Printed in U.S.A.
LMCDOFDR
Door closing system for chain/crank hoist operated doors or manually
operated doors.
Fully automated door closing system when used in conjunction with
mechanical or solid-state operators.
User selectable feature that delays door closing to allow time for
passage clearance. Factory default 10 seconds, maximum 60 seconds.
Allows routine fire door testing without requiring activation of the
smoke detector or central alarm system.
Prevents door reversal if the door is kept in the closed position.
Eliminates door reset service calls or potential system damage.
Normally open and normally closed for smoke or heat detectors.
Provides power (24VDC) for up to four 2-wire smoke detectors.
Allows monitoring of alarm inputs, outputs and ground fault.
For the transmission of alarm and trouble signals to the fire alarm
control panel.
Release device operates on 120VAC, 24VAC, or 24VDC.
For activation of auxiliary devices.
Provides power to the release device to prevent door release during
long power outages. Also provides power for up to 4 smoke/heat
detectors and 2 horn/strobes.
Provides power (24VDC) for up to two notification devices such as a
horn/strobe or speaker strobe.
Monitors voltage to the operator and activates a mechanical door
release upon loss of power to the operator.
Works with the door’s safety edge system to reverse the door if
obstructed. Will attempt door closure up to 3 times before allowing the
door to rest upon an obstruction or gravity drop (user selectable).
Disables the obstruction cycling feature to allow testing of a door
without a mechanical release.
Select between door closure by mechanical release immediately upon
loss of power or standard operation from Battery Backup power.
Safety feature functions are user selectable.
Provides one of two verbal warnings when the fire door is closing.
Can be used in conjunction with up to 2 speaker/strobes.
Selected by DIP switch settings, indicating that an emergency condition
exists and that the door opening should be cleared prior to closure.
XP XPBB AFCB
Non-Motorized Door
Motorized Door
Time -Delayed
Activation
Testing Function
Close Door Detection
Two Smoke Detector
Loops
Power for Detection
Devices
On-Board Diagnostics
LEDs
Trouble and Alarm
Relays
Multiple Power
Options
Form C Dry Contact
Type Activation
Internal Battery
Backup with
Charging System
24VDC Alarm Output
Motor Voltage Sensing
Obstruction Cycling
Remote Test Switch
Optional Response
Upon Power Loss
DIP Switch Selection
Optional Voice Board
Two Standard Voice
Warnings
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