Model: LUH-15T
INSTRUCTIONS: UNIHORN
®
LUH-15T
©2010 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069. Phone–800.325.9660 Fax—
636.257.6606. Lowell makes every effort to provide accurate information while reserving the right to change
specifications and/or improve manufacturing methods without notification. (lowellmfg.com)
No. i-200
(rev. 02.15.11)
pg. 1 of 2
The UL Listed, universal-use UNIHORN
®
(model LUH-15T) is designed to
mount indoors or outdoors in either recessed or surface-mount applications.
It can be mounted with or without the trim ring and press-fit grille (included).
Installation should conform to all Federal, state and local codes and should
only be made by qualified service personnel.
NOTE: The LUH-15T includes a DC blocking capacitor that is required for
speaker line supervision in a life safety system, and therefore cannot be
used for a talkback intercom system. See model LUH-15TI for intercom use.
UNIHORN
®
Carton Includes: (1 ea.)
• Aluminum re-entrant horn with 70V/25V transformer (LUH-15T).
• Aluminum trim ring: 9.6" dia. with 7.25" center cutout.
• Press-fit aluminum grille.
Tools Needed: (not included)
• Screwdrivers and tools for electrical connections.
Optional Accessories: (order separately)
Transformer settings on
horn can be adjusted
front or rear.
Trim ring ships with horn. It
can be discarded for installations
that do not use the press-fit
aluminum grille.
Press-fit
aluminum grille.
Inside diameter of trim
ring (7.25") can be used
as a cutout template.
UL Approved Installation Methods / Accessories:
Installation Method Grille Backbox / Trim Plate T-bridge
Open Installation Press-fit aluminum grille* OR no grille N/A N/A
Drywall Press-fit aluminum grille No backbox N/A
Lay-in Tile Ceiling Press-fit aluminum grille No backbox LUH-TBAR**
Masonry Press-fit aluminum grille LUH-BOX (recessed) + LUH-TP trim plate N/A
Surface-mount Press-fit aluminum grille LUH-BOX (surface) N/A
*Tighten dog ears to hold trim ring in place. **T-bridge is recommended for acoustic tile ceilings.
Surface-mount: 10.5" sq. x 4"D stainless steel
backbox surface-mounts to wall. Horn with trim ring
clamps to box (ring covers unused screw holes).
Grille press-fits to horn assembly.
Surface-mount
LUH-BOX
to wall.
Clamp horn with
trim ring to box.
Lay-in Tile Ceiling or Drywall: horn with trim
ring clamps to ceiling (tile bridge is recommended
for acoustic tile). Grille press-fits to horn assem-
bly. No visible screws.
Masonry: 10.5" sq. x 4"D stainless steel backbox
mounts into masonry wall. LUH-TP trim plate screws to
backbox. Horn with trim ring clamps to trim plate (trim
ring covers screws). Grille press-fits to horn assembly.
Recess-mount
LUH-BOX to
masonry wall.
Screw LUH-TP trim
plate to backbox.
Clamp horn with
trim ring to plate.
Press-fit
grille to horn.
P
res
s
-fit
gr
ille to hor
n.
Clamp horn with trim
ring to ceiling.
LUH-VRG: cast-aluminum
vandal-resistant grille (9.6" dia.)
Optional Accessories: (order separately)
LUH-TP:
trim plate
(11.5" sq.)
Other Installation Accessories (not evaluated or approved by UL): the UNIHORN
®
also features standard screw holes that fit the LUH-VRG
vandal-resistant grille or any standard 8" speaker grille; however, these options have not been evaluated by UL. The LUH-VRG installs with spanner-
head screws and screwdriver. Standard grilles screw-mount to the UNIHORN
®
and fit various backboxes. See individual product spec sheets for more
information on standard 8" speaker grilles and backboxes.
Installation Method Grille Backbox / Trim Plate T-bridge
Open Installation LUH-VRG vandal-resistant grille* OR no grille N/A N/A
Drywall LUH-VRG vandal-resistant grille No backbox N/A
Lay-in Tile Ceiling LUH-VRG vandal-resistant grille No backbox LUH-TBAR**
Masonry LUH-VRG vandal-resistant grille LUH-BOX (recessed) + LUH-TP trim plate N/A
Surface-mount LUH-VRG vandal-resistant grille LUH-BOX (surface) N/A
*Tighten dog ears to hold trim ring in place. **T-bridge is recommended for acoustic tile ceilings.
LUH-BOX:
stainless steel
backbox (10.5"
sq. x 4"D)
Press-fit
grille to horn.
HRP832: spanner-head
screwdriver for use with
8-32 spanner screws.
LUH-TBAR:
tile bridge
(2 pages)
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