Disposable Protection Cap. The
Protective Cap is temporarily removed
to install the BV4-QREC, and then
replaced to protect the BV4-QREC
while the ceiling is being installed and
finished. The tip of the Protection Cap
can be used to mark the center of the
ceiling hole into plaster board, ceiling
tiles, etc. by pushing the ceiling
product against the Protection Cap.
When the ceiling installation is
complete, the Protection Cap is
removed and the Cover Plate Assem-
bly installed.
Operation: When exposed to heat
from a fire, the Cover Plate, which is
soldered to the Retainer Assembly at
three points, falls away to expose the
Sprinkler Assembly. At this point the
Deflector supported by the Arms
drops down to its operational position.
The glass bulb contains a fluid which
expands when exposed to heat. When
the rated temperature is reached, the
fluid expands sufficiently to shatter the
glass bulb, which then allows the
sprinkler to activate & flow water.
WARNING
The Model BV4-QREC ECLH
Concealed Pendent Sprinklers
described herein must be installed &
maintained in compliance with this
document, as well as with the
applicable standards of the National
Fire Protection Association, in addition
to the standards of any other
authorities having jurisdiction. Failure
to do so may impair the integrity of
these devices.
The owner is responsible for
maintaining their fire protection
system and devices in proper
operating condition. The installing
contractor or sprinkler manufacturer
should be contacted relative to any
questions.
Tyco Fire Products --- www.centralsprinkler.com
451 North Cannon Avenue, Lansdale, Pennsylvania 19446 --- USA
Customer Service/Sales: Tel: (215) 362-0700 / Fax: (215) 362-5385
Technical Services: Tel: (800) 381-9312 / Fax: (800) 791-5500
Model BV4-QREC
5.6 K-factor
Quick Response
Extended Coverage Light Hazard
Concealed Pendent Glass Bulb Automatic Sprinklers
No. 2-8.0
General
Description
The Central Model BV4-QREC,
5.6 K-factor, Quick Response,
Extended Coverage Light Hazard
(ECLH) Concealed Pendent Sprin-
klers are decorative glass bulb
sprinklers designed for use in light
hazard occupancies such as
churches, hospitals, offices, and
restaurants.
They are intended for use in auto-
matic sprinkler systems designed in
accordance with standard installation
rules (e.g., NFPA 13) for the protec-
tion of light hazards up to a maximum
coverage area of 324 ft
2
(30,1 m
2
), as
compared to the maximum coverage
area of 225 ft
2
(20,9 m
2
) for standard
coverage sprinklers.
Each unit includes a Cover Plate
Assembly which conceals the sprin-
kler operating components above the
ceiling. The separable two-piece
design of the Cover Plate and Support
Cup Assemblies allows installation of
the sprinklers and pressure testing of
the fire protection system prior to
istallation of a suspended ceiling or
application of the finish coating to a
fixed ceiling. They also permit
removal of suspended ceiling panels
for access to building service equip-
ment without having to first shut down
the fire protection system and remove
sprinklers.
Also, the separable two-piece design
of the sprinkler provides for 1/2 inch
(12,7 mm) of vertical adjustment, to
reduce the accuracy to which the
length of fixed pipe drops to the
sprinkler must be cut.
The BV4-QREC ECLH Concealed
Pendent Sprinkler is shipped with a
Technical
Data
CENTRAL
BV4-QREC
2-01
Extended
Coverage Light
Hazard
Concealed
Pendent
Sprinklers
Sprinkler Identification Number
SIN C3532
Approvals
UL and C-UL Listed. NYC Approved.
(Refer to Table 1. The approvals apply
only to the service conditions indicated
in the Design Criteria Section)
Maximum Working Pressure
175 psi (12,1 bar)
Pipe Thread Connection
1/2 inch NPT
Discharge Coefficient
K = 5.6 GPM/psi
1/2
(80,6 LPM/bar
1/2
)
Temperature Ratings
155
°
F/68
°
C Sprinkler - 135
°
F/57
°
C Plate
200
°
F/93
°
C Sprinkler - 165
°
F/74
°
C Plate
Continued on Page 2
OBSOLETE
