LiftMaster LM21XP Extended Performance Release Device

Introduction

The LiftMaster® LM21XP Release Device is UL/ULC listed, normally energized fail-safe device designed for use on rolling doors, single-slide and center-parting level and inclined track doors. All models are normally energized fail-safe releasing devices incorporating state-of-the-art electronic control circuitry. The release devices respond to emergency conditions generated from an automatic initiating device and are used in conjunction with a temperature fuse link system.

This device is designated to be used with manual doors, but can be used on motorized doors incorporating a fusible link assembly and drop-out mechanism.

The release device must be powered from 24Vdc received from an approved UL 1481 regulated power supply with battery backup. The devices can be activated via a smoke detector or an alarm relay from the panel's Form C dry contact relay. The release device features include a 10-, 20-, 30- or 60-second delay on alarm, closed door detection capabilities, Form C relay outputs for the transmission of alarm and trouble signals transmitted to the fire alarm control panel, an audible trouble sounder, and diagnostic feedback LEDs.

Agency Requirements

Installation and testing to factory specifications shall be performed by factory authorized personnel for proper operation in accordance with the latest National Fire Protection Association (NFPA), Underwriters Laboratories (UL), National Electrical Code (NEC), local, state, county, district and/or other applicable building and fire standards, guidelines, regulations and codes including, but not limited to, all appendices and amendments and the requirements of the local authority having jurisdiction (AHJ).

Specifications

Electrical Specifications

Mechanical Specifications

Preparation

It is imperative that the wall or mounting surface provide adequate support for the release device.

Refer to the door manufacturer's recommendations for use of this product with specific door being utilized. Use only hardware approved or recognized by the appropriate testing and listing agencies in conjunction with the installation of this product.

Additional items may be required to complete the installation:

• Concrete anchors or fasteners
• Sash chain or 1/16" cable
• Eyebolts-hook
• Fusible links
• Turnbuckles
• Smoke detectors (up to 4 may be installed with this device)

Refer to NFPA 72 and NFPA 80 for instructions concerning proper placement and detection coverage. End-of-line devices shall be installed for supervision of electrical power to 4-wire smoke detector. When using 4-wire smoke detectors with this device, electrical supervision must be provided by means of a UL/ULC listed end-of-line relay.

WARNING: To prevent possible SERIOUS INJURY or DEATH:

• DO NOT use this device without fusible links installed.
• Test every 90 days to assure proper operation of release device.

Installation

IMPORTANT INSTALLATION INSTRUCTIONS

WARNING: To reduce the risk of SEVERE INJURY or DEATH:

• READ AND FOLLOW ALL INSTALLATION WARNINGS AND INSTRUCTIONS.
• NEVER connect release device to power source until instructed to do so.
• DO NOT install this device on a motorized door without an electric safety edge.
• DO NOT use this device without fusible links installed.
• Concrete anchors MUST be used if mounting release device into masonry.
• DO NOT exceed maximum pull rating of 40 lbs. on releasing device.

Classification: Releasing device as defined by Underwriters Laboratories.

Installation Requirements: Intended for "Indoor Dry" locations; all wiring must be performed in accordance with the most current version of NFPA 72 - National Fire Alarm Code and the National Electric Code.

Mount the Release Device

Installation procedures vary according to door types. Refer to door manufacturer's recommendation that applies to your door.

1. Mount the release device on a vertical surface with chain end link exiting side of enclosure.
2. Secure the release device enclosure with fasteners (#10 is the minimum size recommended). If installing in masonry, use concrete anchors (not provided).
3. Install hardware (sash chain or 1/16" cable, eyebolts-hook, fusible links, turnbuckles - not provided) according to door manufacturer's recommendations. NOTE: The end link direction of pull must be perpendicular to the side of the release device enclosure. Install an eyebolt a minimum distance of 12" from the release device to adequately redirect sash chain pull.
4. Install end link by pressing mechanical reset to allow insertion of end link. Push end link completely in and release mechanical reset to latch end link.
5. Remove sash chain or cable slack by adjusting turnbuckle.

Wiring

WARNING: To reduce the risk of SEVERE INJURY or DEATH:

• ALL electrical connections MUST be made by a qualified individual.
• Disconnect power at the fuse box BEFORE proceeding.
• Release device MUST be properly grounded and connected in accordance with local electrical codes.
• ALL power wiring should be on a dedicated circuit and well protected. The location of the power disconnect should be visible and clearly labeled.
• ALL power and control wiring MUST be run in separate conduit.
• Installation of ALL wiring and connections, including Class 1 and Class 2 circuits, shall be performed in accordance with, but not limited to, the latest NFPA, UL and N.E.C. standards and codes. In addition, ALL installations subject to Canadian standards shall be performed in accordance with the Canadian Electrical Code, Part I, with respect to wiring material type, wiring gauge related to power capacity requirements and circuit length and wiring methods.

Wiring Instructions

Verify wiring configuration with that recommended by door manufacturer for use of this product with specific door and accessories being utilized. 18-gauge wire is recommended.

1. Turn off power supply sources for the release device as well as the door operator, if applicable, before beginning.
2. Verify voltage rating of release device to power source being utilized. Voltage is indicated on the side of the unit. Verify that power is disconnected before proceeding.
3. Connect 24Vdc power to terminal board positions 1 and 2 (Figure 2). Observe proper polarity. 24Vdc power input from an approved UL 1481 regulated power supply with battery backup.

CAUTION: To prevent DAMAGE to the circuit board, ALL connections from terminals 3 through 16 MUST be dry contact type.

Wiring Diagram

Field Wiring shall consist of 22-18 AWG wiring.

1. Supervised, power limited circuit, 20 Ohm maximum line impedance.
2. Unsupervised, power limited circuit, 20 Ohm maximum line impedance.
3. Maximum of 4 Class B Style A detectors.
4. Power from an approved UL1481 regulated supply with battery backup.

Connections of Initiating Devices and Accessories

A maximum of 4 smoke detectors may be installed with this device. Refer to NFPA 72 and NFPA 80 for instructions concerning proper placement and detection coverage. End-of-line devices must be installed for supervision of electrical power to 4-wire smoke detector. When using 4-wire smoke detectors with this device, electrical supervision must be provided by means of a UL/ULC listed end-of-line relay.

NOTE: For low voltage wiring #18 AWG is recommended.

Normally Open "2-Wire," Class B Style A Initiating Devices

Connect wiring from N/O initiating device loop to positions 3 and 4. Place the supervisory resistor (10k ohm @ 1/2 watt) contained within the accessory pack (Figure 3). Observe proper polarity, 3 (+), 4 (-) when attaching to the release device's terminal board. NOTE: Make certain that the factory-installed jumper between terminal positions 5 and 6 remains in place. This option is a supervised, current-limited circuit.

Normally Open "4-Wire,” Class B Style A Initiating Devices

Connect wiring from N/O 4-Wire initiating device loop to positions 3 and 4, making sure an end-of-line supervisory resistor (10k ohm @ 1/2 watt) is installed as shown in Figure 4 or 5, depending upon the type of smoke detector being used. Observe proper polarity, 3 (+), 4 (-) when attaching to the release device's terminal board. NOTE: Make certain that the factory-installed jumper between terminal positions 5 and 6 remains in place. This option is a supervised, current-limited circuit.

Normally Closed "4-Wire," Class B Style A Initiating Devices

After removing the factory-installed jumper between terminal positions 5 and 6, connect wiring from N/C 4-Wire initiating device loop to positions 5 and 6 (Figure 6). This option is a supervised, current-limited circuit. NOTE: Make certain that the factory-installed resistor between positions 3 and 4 remains in place.

NOTE: End-of-line devices must be installed adjacent and after the last initiating device. Initiating device loops are supervised and cannot be direct series or paralleled between multiple release devices or shared with other alarm equipment. For proper wiring configurations from multiple smoke detectors or signaling for simultaneous closure on multiple doors, call technical support, 1-800-528-7870. Incorrect wiring between devices may cause damage to the release control circuit and void warranty.

WARNING: To prevent possible SERIOUS INJURY or DEATH:

• End-of-line devices MUST be installed for supervision of electrical power to 4-wire smoke detector.
• DO NOT install this device on a motorized door without an electric safety edge.

Relay Module Installation

In lieu of smoke detectors, the release device may be put into alarm by the fire alarm control panel. Most commonly, a relay module is used as an interface between the fire alarm control panel and the release device. The relay module must provide Form C dry contacts for connection to the appropriate terminals on the release device (Figure 7).

NOTE: When choosing a relay module to activate the release device in an alarm condition, always select one that provides Form C dry contact relays. Do not use any relay module providing or passing any (control) voltage through the contacts into the release device. The passage of voltage through such a relay module into the release device will cause problems with the operation of the device and may damage the device's terminals and/or circuit board.

Optional Connections

Close Door Detection Option

Connect wiring from N/O electrical loop, using a proximity switch or other similar device with dry contacts, to 7 and 8 (Figure 8). The switch should be placed to engage when the door is in the closed position and so that it will toggle states from its N/O condition (switch closed when door is closed) to a closed condition indicating that the door edge has made contact with desired down position. When the switch is closed by contact from the door, the release device will not activate on alarm, thereby eliminating nuisance gravity drops through the inadvertent release of the fusible link assembly. This option only works as long as power is available to unit. Fail-safe operation is maintained under all operating conditions, and if power is not available to the unit, the fusible link assembly will be released. This is a power-limited, unsupervised circuit. This proximity switch MUST be mounted in the same room as the release device.

Relay and Trouble Outputs Option

Connect wiring from the Alarm Relay Outputs (#11 N/C or #13 N/O and #14 Common) to the appropriate inputs on the fire alarm control panel to provide a signal at the panel when the release device is in an alarm state. Connect wiring from the Trouble Relay Outputs (#14 N/C or #16 N/O and #15 Common) to the appropriate inputs on the fire alarm control panel to provide a signal at the panel that the release device is in a trouble state (Figure 9). If these features are desired, coordinate the interconnection between the Release Device and the Fire Alarm Control Panel with the fire alarm installer.

CAUTION: To prevent DAMAGE to the circuit board, ALL connections from terminals 3 through 16 MUST be dry contact type.

DIP Switch Selection

The release device provides a factory default delay of 10 seconds (to minimize nuisance alarms) before releasing the fusible link chain upon alarm or power loss. A 4-position DIP Switch found on the PC board within the release device can be used to adjust the length of the delay to one of four preset delays. The optional delay settings are as follows:

NOTE: Set all DIP switch options before applying power to the system.

Testing

TEST PROCEDURES

TO BE PERFORMED BY FACTORY AUTHORIZED PERSONNEL ONLY! CLEAR FIRE DOOR OPENING AND PROHIBIT TRAFFIC THROUGH DOOR OPENING WHILE TESTING!

Testing does not affect normal operation of alarm system when connected to release device/control panel. Testing of the release device is independent of, and shall in no way be interpreted as an alternative method of, testing of a central fire alarm system, motorized operator and/or any other system component employed on the fire door or counter fire door installation. Complete testing and normal operation can only be accomplished with power applied to unit. Door must be in open position with power applied to unit to begin testing. The following procedures describe testing of all options. Verify options ordered and installed with unit. All tests may not apply. Refer to Figure 1 for location of all the LEDs and switches mentioned in this section.

WARNING: To prevent possible SERIOUS INJURY or DEATH:

• Clear fire door opening and prohibit ALL traffic through door opening while testing.
• Test every 90 days to assure proper operation of release device.

Initial Power Up

1. Apply line power to the unit.
2. Power LED (red) will be lit on the bottom of the release device.

Mechanical Release

1. Depress and continue to hold test button on side of release device. After the selected delay expires, the device will release the end link and allow door to drop. Release test button.
2. Reset the door per door manufacturer's instructions. Raise door and then reset the release device by pushing downward on the mechanical reset button at the top of the device. Fully insert the end link through the side opening on the device and release the reset button in order to latch end link.

Close Door Detection (Optional)

1. Using the chain hoist or motor operator, lower the door to fully closed position.
2. Verify that Release Disabled LED (yellow) is lit indicating door closure. Depress and continue to hold test button on side of release device for 10 seconds. Close Door Detection logic will prohibit the release device from energizing and releasing the end link. Release the test button.
3. Raise door to fully open position.

Suspension of Power

1. Make sure door is in fully open position. Turn off all power to release device. Immediately upon loss of power to the release device, a mechanical release will be initiated.
2. Reset the door per door manufacturer's instructions. Raise the door and then reset the release device by pushing downward on the mechanical reset button at the top of the device. Fully insert the end link through the side opening on the device and release the reset button in order to latch end link. Press the "Reset" button on the device to reset the alarm loop.

After completing all tests, make sure the door is in it's normal position (open or closed) and all power required for normal operation is restored to unit. The release device is designed to operate with power applied.

NOTE: Testing shall be performed and witnessed for proper operation.

Troubleshooting

Operational Checklist

Power

Is the red LED, labeled "Power," located on the bottom of the enclosure lit?

Check the Alarm

Are the alarm (smoke detection) inputs correct? If not, the release device will not release the fusible link assembly in a fire condition. Conversely, the release device will always release the fusible link assembly when powered or reset.

Check the Close Door Detection

Is the Yellow LED on the bottom of the enclosure lit? If lit, the close limit is active and the device is disabled and will not release the tension on the door spring as the door is in the closed position, activating the proximity switch. If not lit, check wiring instructions in Figure 8.

Circuit Board Diagnostic LEDs

View diagnostic LEDs present on the circuit board located behind the terminal board. Refer to the table below for the status LED indications.

Maintenance

Maintenance Requirements

The release device has no scheduled maintenance requirements. The unit has been designed and tested for use in dry, indoor locations. Testing of the unit at least once every 90 days is recommended, but test intervals shall ultimately be subject to criteria established by the Authority Having Jurisdiction (AHJ).

WARNING: To avoid SERIOUS PERSONAL INJURY or DEATH from electrocution, disconnect ALL power BEFORE performing ANY maintenance.

Enclosure Mounted LEDs Status Indicators

Accessories and Repair Parts

Accessories

Repair Parts

NOTE: Certain accessories above will require a separate power source. Refer to product manual.

How to Order Repair Parts

OUR LARGE SERVICE ORGANIZATION SPANS AMERICA

Installation and service information call our TOLL FREE number: 1-800-528-7870

Appendix

Accessory Compatibility Guide

Smoke Detectors

Heat Detectors

End-of-Line Device

NOTE: Certain accessories above will require a separate power source. Refer to product manual.

Operator Notes

This section is intended for user notes and observations.