Globe GL-QR/DC Series Quick Start Manual

STANDARD COVERAGE, QUICK RESPONSE
DOMED CONCEALED PENDENT SPRINKLER

GENERAL DESCRIPTION

The Globe Series GL-QR/DC sprinklers are listed Quick
Response domed concealed sprinklers which utilize a 3mm
frangible glass bulb as the thermosensitive operating ele-
ment. They are Listed and Approved as Standard Cover-
age sprinklers and are to be installed in accordance with
the guideline of the appropriate Installation Standard being
mandated by the AHJ (i.e. NFPA 13). While providing addi-
tional aesthetic appeal from that of a semi-recessed sprin-
kler, the GL-QR/DC additionally provides a 1/2" of total ad-
justment. The sprinkler is available in five temperatures and
the domed cover plate is available in two temperatures. An
optional protective cap (P/N 327119) can be ordered to pre-
vent ceiling installation damage to the sprinkler. The protec-
tive cap is removed and the cover plate is installed when the
system is ready for service. See "Installation" steps within
this document.

OPERATION

The soldered cover plate drops off the retainer assembly
when exposed to heat, as from a fire, that has reached
the plate's Listed temperature rating, exposing the sprin-
kler above. As heat encompasses the glass bulb operating
element of the sprinkler, the fluid in the bulb expands, com-
pressing the air bubble within the bulb. When the air bubble
can no longer compress, the fluid expansion causes break-
age of the glass bulb, resulting in release of the water seat
assembly and discharge of water from the sprinkler.

FINISHES AND ACCESSORIES

Sprinkler Finish
• Factory Bronze
Dome Cover Plates
• Chrome • White Painted
NOTE:
Factory painted cover plates must not be repainted. Non-factory
applied paint may adversely delay or prevent sprinkler operation
in the event of a fire.
Wrenches
• 1/2" NPT Recessed/Concealed
• 3/4" NPT Recessed/Concealed
SEP 2019
4077 Airpark Dr. Standish, MI 48658 • 989-846-4583 •
SERIES GL-QR/DC
K-FACTOR 2.8, 4.2, 5.6, 8.0
• Black Painted • Custom
Technical Support 989-414-2600
•

TECHNICAL DATA

SIN
•
GL2845, GL4245, GL5645, GL8145
Approvals
•
cULus Listed
Maximum Working Pressure
•
175 psi (12 bar)
•
Factory tested to 500 psi (34 bar)
Minimum Operating Pressure
•
7 psi (48 kPa)
Temperature Ratings
•
See Table A for Temperature combinations
Materials of Construction
•
Frame - bronze
•
Bulb seat - copper
•
Spring - nickel alloy
•
Bulb - glass with alcohol based solution, 3mm
•
Cover Plate - Brass
•
Upper Escutcheon Assembly - carbon steel
NOTE:
Users should refer to Globe's web site (www.globesprinkler.com)
to assure that the most recent technical literature is being utilized.
GFS-104
www.globesprinkler.com
• techservice@globesprinkler.com
• Deflector - brass • Screw - brass
• Seal - teflon
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