General
Description
The Series RFII
Quick
Response
(3 mm bulb) & Standard Response (5
mm bulb), 5.6 K-Factor, “Royal Flush
II” Concealed Pendent Sprinklers are
decorative sprinklers featuring a flat
cover plate designed to conceal the
sprinkler. It is the best choice for archi-
tecturally sensitive areas such as hotel
lobbies, office buildings, churches,
and restaurants.
Each unit includes a Cover Plate As-
sembly that conceals the sprinkler op-
erating components above the ceiling.
The separable two-piece design of the
Cover Plate and Support Cup Assem-
blies allows installation of the sprin-
klers and pressure testing of the fire
protection system prior to installation
of a suspended ceiling or application
of the finish coating to a fixed ceiling.
They also permit removal of sus-
pended ceiling panels for access to
building service equipment without
having to first shut down the fire pro-
tection system and remove sprinklers.
Also, the separable two-piece design
of the 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 sprin-
klers must be cut.
The Series RFII
Sprinklers are
shipped with a Disposable Protective
Cap. The Protective Cap is temporarily
removed for installation, and then it
can be replaced to help protect the
sprinkler while the ceiling is being in-
stalled or finished. The tip of the Pro-
tective Cap can also be used to mark
the center of the ceiling hole into plas-
ter board, ceiling tiles, etc. by gently
pushing the ceiling product against the
Protective Cap. When the ceiling in-
stallation is complete the Protective
Cap is removed and the Cover Plate
Assembly installed.
As an option, the Series RFII Standard
Response (5 mm bulb) “Royal Flush II”
Concealed Pendent Sprinklers may be
fitted with a silicone Air and Dust Seal
(Ref. Fig. 5). The Air and Dust Seal is
intended for sensitive areas where it is
desirable to stop air and dust travel
through the cover plate from the area
above the ceiling.
WARNINGS
The Series RFII Concealed Pendent
Sprinklers described herein must be
installed and maintained in compli-
ance 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 integ-
rity of these devices.
The owner is responsible for maintain-
ing their fire protection system and de-
vices in proper operating condition.
The installing contractor or sprinkler
manufacturer should be contacted
relative to any questions.
Model/Sprinkler
Identification
Numbers
TY3551
(5mm bulb) &
TY3531
(3 mm
bulb): maximum 175 psi (12,1 bar) by
UL, C-UL, and FM.
NYC under MEA 353-01-E.
TY3504
(5 mm bulb) &
TY3505
(3 mm
bulb): maximum 250 psi (17,3 bar) by
UL and C-UL, and maximum 175 psi
(12,1 bar) by FM.
NYC under MEA 353-01-E.
Technical
Data
Approvals for Series RFII
UL and C-UL Listed. FM Approved.
(The approvals apply only to the serv-
ice conditions indicated in the Design
Criteria section and maximum pres-
sure
ratings
indicated
in
the
Model/Sprinkler Identification Num-
bers section.)
Approvals for Air & Dust Seal
(Part #10908100)
UL and C-UL Listed for use with the
RFII (TY3551 & TY3504) Standard Re-
sponse Concealed Sprinkler.
Temperature Ratings
155F/68C Sprinkler - 135F/57C Plate
200F/93C Sprinkler - 165F/74C Plate
Discharge Coefficient
K = 5.6 GPM/psi
1/2
(80,6 LPM/bar
1/2
)
Adjustment
1/2 inch (12,7 mm)
Finishes
Cover Plate: Chrome Plated, Brass
Plated, or White Painted (Custom paint
matches and colors other than white
are available on request.)
Physical Characteristics
Frame
. . . . . . . . . . . . Bronze
Support Cup . . Chrome Plated Steel
Guide Pins . . . . . . Stainless Steel
Deflector . . . . . . . . . . . Bronze
Compression Screw . . . . . . Brass
Bulb
. . . . . . . . . . . . . . Glass
Cap . . . . . . . . Bronze or Copper
Sealing Assembly . . . . . . . . . .
. . . . . . Beryllium Nickel w/Teflon*
Cover Plate
. . . . . . . . . . Brass
Retainer . . . . . . . . . . . . Brass
Ejection Spring
. . . Stainless Steel
Patents
U.S.A. Patent No. 4,014,388 may be
applicable to the Air and Dust Seal.
Series RFII — 5.6 K-factor
“Royal Flush II” Pendent Concealed Sprinklers
Quick & Standard Response, Standard Coverage
Technical Services:
Tel: (800) 381-9312 / Fax: (800) 791-5500
Page 1 of 4
TFP181
FEBRUARY, 2002
Customer Service/Sales:
Tel: (414) 570-5000 / (800) 558-5236
Fax: (414) 570-5010 / (800) 877-1295
TFP181 (TD579R)
OBSOLETE
