Chamberlain LM21XP - Manual (Page 4)

4
I N S T A L L A T I O N
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, fuse
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.
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
WARNING
WARNING
WARNING
1. READ AND FOLLOW ALL INSTALLATION WARNINGS
AND INSTRUCTIONS.
2. NEVER connect release device to power source until
instructed to do so.
3. DO NOT install this device on a motorized door without
an electric safety edge.
4. DO NOT use this device without fuse links installed.
5. Concrete anchors MUST be used if mounting release
device into masonry.
6. DO NOT exceed maximum pull rating of 40 lbs. on
releasing device.
Mechanical
Reset Plunger
End Link
Smoke Detector
Releasing
Unit
Fuse Links
Eyebolt
Turnbuckle
Chain
Chain End
Link
Fire Door