Tyco RFII-MRI Series User manual

Page 1 of 4 AUGUST 2022 TFP182
Worldwide
Contacts
www.tyco-fire.com
IMPORTANT
Refer to Technical Data Sheet
TFP2300 for warnings pertaining to
regulatory and health information.
Always refer to Technical Data
Sheet TFP700 for the “INSTALLER
WARNING” that provides cautions
with respect to handling and instal-
lation of sprinkler systems and com-
ponents. Improper handling and
installation can permanently damage
a sprinkler system or its compo-
nents and cause the sprinkler to fail
to operate in a fire situation or cause
it to operate prematurely.
Scan the QR code or enter the URL
in a web browser to access the most
up-to-date electronic version of this
document. Data rates may apply.
docs.jci.com/tycore/tfp182
Series RFII-MRI — 5.6 K-factor
Non-Magnetic Concealed Pendent Sprinklers
Quick & Standard Response, Standard Coverage
General
Description
The TYCO Series RFII-MRI 5.6 K-fac-
tor, Non-Magnetic Concealed Pendent
Sprinklers Quick Response (3 mm bulb)
and Standard Response (5 mm bulb),
are decorative sprinklers featuring a
at cover plate designed to conceal
the sprinkler.
The RFII-MRI Sprinkler is intended for
use inside of a magnetic resonance
imaging (MRI) environment, that is, in
an MR system room and close to the
scanner unit. However, this sprinkler is
not intended for use directly inside of
the MR system, such as within the bore
of the scanner unit. During the intended
use, the RFII-MRI Sprinkler must be
mounted at the ceiling to the xed re
protection piping system of the MR
system room. Under these conditions,
per non-clinical testing to ASTM F2052-
15, the RFII-MRI Sprinkler was found
to be acceptable for use under a static
magnetic eld of 7-Tesla or less. Stan-
dard MRI apparatus are typically in the
3 Tesla range.
Each sprinkler is comprised of the fol-
lowing separately ordered components:
• Cover plate/retainer assembly
• Sprinkler/support cup assembly
The separable, two-piece assembly
design provides the following benets:
• Allows installation of the sprinklers
and pressure testing of the re pro-
tection system prior to installation of
a suspended ceiling or application of
the nish coating to a xed ceiling.
• Permits the removal of suspended
ceiling panels for access to building
service equipment without having
to rst shut down the re protection
system and remove sprinklers.
• Provides for 1/2 in. (12,7 mm) of ver-
tical adjustment to allow a measure
of exibility in determining the length
of xed piping to cut for the sprinkler
drops.
The RFII-MRI Sprinklers are shipped
with a disposable protective cap. The
protective cap is temporarily removed
during installation and replaced to help
protect the sprinkler during ceiling
installation or nish. The tip of the pro-
tective cap can be used to mark the
center of the ceiling hole into plaster
board or ceiling tiles by gently pushing
the ceiling product against the pro-
tective cap. When ceiling installa-
tion is complete, the protective cap is
removed and the cover plate/retainer
assembly is installed.
As an option, the RFII-MRI Standard
Response (5 mm bulb) Sprinkler can
be tted with a silicone air and dust
seal as shown in Figure 5. The air and
dust seal is intended for sensitive areas
where it is desirable to prevent air and
dust from the area above the ceiling to
pass through the cover plate.
NOTICE
The RFII-MRI Sprinklers described
herein must be installed and main-
tained in compliance with this docu-
ment and with the applicable standards
of the NATIONAL FIRE PROTECTION
ASSOCIATION (NFPA), in addition to
the standards of any authorities having
jurisdiction. Failure to do so may impair
the performance of these devices.
The owner is responsible for maintain-
ing their fire protection system and
devices in proper operating condition.
The installing contractor or sprinkler
manufacturer should be contacted with
any questions.
Sprinkler
Identication
Number (SIN)
TY3530 — 3 mm bulb
TY3550 — 5 mm bulb

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Page 2 of 4
Technical
Data
Sprinkler Approvals
TY3530 (3 mm bulb)
• UL Listed, C-UL listed as quick
response
• FM approved as standard response
TY3550 (5 mm bulb)
• UL listed, C-UL listed, and FM approved
as standard response
Note: FM does not approve concealed
sprinklers for quick response.
Note: Approvals apply only to the service
conditions indicated in the Design Criteria
section.
Air and Dust Seal Approvals
UL and C-UL Listed
Standard Response (TY3550) application
only
Maximum Working Pressure
Maximum 175 psi (12,1 bar)
Temperature Rating
155°F (68°C) Sprinkler with
139°F (59°C) Plate
200°F (93°C) Sprinkler with
165°F (74°C) Plate
Discharge Coefficient
K= 5.6 GPM/psi½(80,6 LPM/bar½)
Adjustment
1/2 in. (12,7 mm)
Finishes
See the Ordering Procedure section.
Physical Characteristics
Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bronze
Support Cup . . . . . . . . . . . . . . . . . . . . . . . .Brass
Guide Pins. . . . . . . . . . . . . . . . . . Stainless Steel
Deector . . . . . . . . . . . . . . . . . . . . . . . . . .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
Design
Criteria
The Series RFII-MRI Concealed
Pendent Sprinklers are intended for
fire protection systems designed in
accordance with the standard installa-
tion rules recognized by the applicable
Listing or Approval agency; for example,
UL Listing is based on NFPA 13.
The RFII-MRI Sprinklers are only listed
with the Series RFII-MRI Concealed
Cover Plates having a factory applied
finish.
NOTICE
Do not use the RFII-MRI Sprinklers in
applications where the air pressure
above the ceiling is greater than that
below. Down drafts through the sprin-
kler/support cup assembly can delay
sprinkler operation in a fire situation.
Operation
When exposed to heat from a re, the
cover plate, normally soldered to the
Retainer at three points, falls away
to expose the sprinkler/support cup
assembly.
The deflector — supported by the
guide pins — then drops down to its
operational position.
The glass bulb contains a uid that
expands when exposed to heat. When
the rated temperature is reached, the
uid expands sufciently to shatter the
glass bulb, activating the sprinkler and
allowing water to ow.
Installation
The Series RFII-MRI Concealed
Pendent Sprinklers must be installed
in accordance with this section.
General Instructions
Do not install any bulb-type sprin-
kler if the bulb is cracked or there is
a loss of liquid from the bulb. With the
sprinkler held horizontally, a small air
bubble should be present. The diam-
eter of the air bubble is approximately
1/16 in. (1,6 mm) for the 155°F (68°C)
and 3/32 in. (2,4 mm) for the 200°F
(93°C) temperature ratings.
A leak-tight 1/2 in. NPT sprinkler joint
should be obtained by applying a
minimum to maximum torque of 7 ft-lb
to 14 ft-lb (9,5 N·m to 19,0 N·m). Higher
levels of torque can distort the sprin-
kler Inlet with consequent leakage or
impairment of the sprinkler.
Do not attempt to compensate for
insufcient adjustment in the sprinkler
SPRINKLER/SUPPORT CUP
ASSEMBLY
COVER PLATE/RETAINER
ASSEMBLY
GUIDE
PINS (2)
DEFLECTOR
(DROPPED
POSITION)
COMPRESSION
SCREW
DEFLECTOR
SUPPORT
CUP WITH
ROLL FORMED
THREADS
FRAME
1/2" NPT
CAP
BULB
SEALING
ASSEMBLY
RETAINER
WITH THREAD
DIMPLES
EJECTION
SPRING
SOLDER
TABS (3)
COVER
PLATE
THREAD INTO
SUPPORT
CUP UNTIL
MOUNTING
SURFACE IS
FLUSH WITH
CEILING
FIGURE 1
SERIES RFII-MRI CONCEALED SPRINKLER
ASSEMBLY

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Page 3 of 4
A: 3-1/4 inches (82,6 mm) C: 2-3/8 to 2-5/8 inches (60,3 to 66,7 mm)
B: 3/16 inches (4,8 mm) D: 1-3/4 to 2-1/4 inches (44,5 to 57,2 mm)
by under- or over-tightening the sprin-
kler/support cup assembly. Re-adjust
the position of the sprinkler tting to
suit.
Step 1. Install the sprinkler only in the
pendent position with the center-line
of the sprinkler perpendicular to the
mounting surface.
Step 2. Remove the protective cap.
Step 3. With pipe thread sealant
applied to the pipe threads, hand-
tighten the sprinkler into the sprinkler
tting.
Step 4. Wrench-tighten the sprinkler
using only the RFII sprinkler wrench,
shown in Figure 3. Apply the wrench
to the Sprinkler as shown in Figure 3.
Step 5. Replace the protective cap
by pushing it upwards until it bottoms
out against the support cup as shown
in Figure 4. The protective cap helps
prevent damage to the deector and
arms during ceiling installation and/or
nish. You can also use the protective
cap to locate the center of the clear-
ance hole by gently pushing the ceiling
material up against the center point of
the protective cap.
NOTICE
As long as the protective cap remains
in place, the system is considered “Out
of Service”.
Step 6. After the ceiling has been
completed with the 2-1/2 in. (63,5 mm)
diameter clearance hole and in prep-
aration for installing the cover plate/
retainer assembly, remove and discard
the protective cap. Verify that the
deector moves up and down freely.
If the sprinkler is damaged and the
deector does not move up and down
freely, replace the entire sprinkler.
Do not attempt to modify or repair a
damaged sprinkler.
Step 7. When installing an air and dust
Seal, see Figure 5 for reference and
follow this step; otherwise, proceed to
Step 8. To attach the air and dust seal,
verify the angle of the outside edge of
the seal is oriented according to Figure
5. Start the edge of the retainer in the
grooved slot of the air and dust seal
and continue around the retainer until
the entire air and dust seal is engaged.
Step 8. Screw on the cover plate/
retainer assembly until the retainer as
shown in Figure 2, or the air and dust
seal as shown in Figure 5, contacts
the ceiling. Do not continue to screw
on the cover plate/retainer assembly
so that it lifts a ceiling panel out of its
normal position. If you cannot engage
the cover plate/retainer assembly with
the support cup or you cannot engage
the cover plate/retainer assembly suf-
ciently to contact the ceiling, you must
reposition the sprinkler tting.
COVER PLATE
PROFILE DEPTH
DIMENSION B
1/2" (12,7 mm)
THREADED
ADJUSTMENT
D
FACE OF
SPRINKLER
FITTING
MANUFACTURER
PRESET GAP
3/32" (2,4 mm)
FACE
OF CEILING,
RETAINING RING
MOUNTING
SURFACE
SPRINKLER
SUPPORT CUP
ASSEMBLY
CLEARANCE HOLE
DIAMETER
DIMENSION C
DEFLECTOR
IN DROPPED
POSITION
3/16" to 11/16"
(4,8 to 17,5 mm)
REFERENCE
COVER PLATE
RETAINER
ASSEMBLY
COVER PLATE
DIAMETER
DIMENSION A
FRAME
ARM
SUPPORT
CUP
7/8" (23 mm)
SQUARE
ACCEPTS
1/2" SOCKET
DRIVE
ALIGN
ARROWS WITH
FRAME ARMS
FIGURE 2
SERIES RFII-MRI CONCEALED SPRINKLER
INSTALLATION DIMENSIONS
FIGURE 3
SERIES RFII-MRI SPRINKLER WRENCH

TFP182
Page 4 of 4
NATIONAL FIRE PROTECTION ASSOCIATION and NFPA are registered trademarks of National Fire Protection Association;
TEFLON is a trademark of The Chemours Company FC, LLC
1467 Elmwood Avenue, Cranston, RI 02910 | Telephone [phone]
© 2022 Johnson Controls. All rights reserved. All specifications and other information shown were current as of document revision date and are subject to change without notice.
Care and
Maintenance
The Series RFII-MRI Concealed
Pendent Sprinklers must be maintained
and serviced in accordance with this
section.
Before closing a re protection system
main control valve for maintenance
work on the re protection system
that it controls, obtain permission to
shut down the affected re protection
system from the proper authorities
and notify all personnel who may be
affected by this action.
Absence of the cover plate/retainer
assembly can delay sprinkler opera-
tion in a re situation.
When properly installed, there is a
nominal 3/32 in. (2,4 mm) air gap
between the lip of the cover plate and
the ceiling, as shown in Figure 2.
This air gap is necessary for proper
operation of the sprinkler. If the ceiling
requires repainting after sprinkler
installation, ensure that the new paint
does not seal off any of the air gap.
Do not pull the cover plate relative to
the enclosure. Separation may result.
Sprinklers which are found to be
leaking or exhibiting visible signs of
corrosion must be replaced.
Automatic sprinklers must never be
painted, plated, coated, or other-
wise altered after leaving the factory.
Modied sprinklers must be replaced.
Sprinklers that have been exposed to
corrosive products of combustion, but
have not operated, should be replaced
if they cannot be completely cleaned
by wiping the sprinkler with a cloth or
by brushing it with a soft bristle brush.
Exercise care to avoid damage to sprin-
klers before, during, and after instal-
lation. Replace sprinklers damaged
by dropping, striking, wrench twist-
ing, wrench slipping, or the like. Also,
replace any sprinkler that has a cracked
bulb or that has lost liquid from its bulb.
For information about replacing a sprin-
kler, see the Installation section.
If you must remove a sprinkler, do not
reinstall it or a replacement without
reinstalling the cover plate/retainer
assembly. If a cover plate/retainer
assembly becomes dislodged during
service, replace it immediately.
The owner is responsible for the inspec-
tion, testing, and maintenance of their
re protection system and devices in
compliance with this document, as well
as with the applicable standards of the
NATIONAL FIRE PROTECTION ASSO-
CIATION (NFPA) such as NFPA25 - in
addition to the standards of any other
authorities having jurisdiction. Contact
the installing contractor or sprinkler
manufacturer regarding any questions.
Automatic sprinkler systems should be
inspected, tested, and maintained by a
qualied Inspection Service in accor-
dance with local requirements and/or
national code.
Limited
Warranty
For warranty terms and conditions, visit
www.tyco-re.com.
Ordering
Procedure
Contact your local distributor for
availability. When placing an order,
indicate the full product name.
Sprinkler/Support Cup Assembly
Specify: Series RFII-MRI (specify SIN),
K=5.6, Pendent Sprinkler, (specify)
temperature rating, P/N (specify):
155°F (68°C) 200°F (93°C)
TY3530 ........51-800-1-155 51-800-1-200
TY3550 ........51-801-1-155 51-801-1-200
Separately Ordered
Cover Plate/Retainer Assembly:
Specify: (temperature rating from
below) Non-Magnetic Series RFII-MRI
Concealed Cover Plate with (specify)
nish, P/N (specify):
139°F (59°C)a 165°F (74°C)b
Grey White
(RAL9002) .... 56-794-0-135 56-794-0 -165
Brass.......... 56-794-1-135 56-794-1-165
Signal White
(RAL9003) .... 56-794-4-135 56-794-4-165
Jet Black
(RAL9005) .... 56-794-6-135 59-794-6-165
Custom ........ 56-794-X-135 56 -794-X-165
NOTES
a. For use with 155°F (68°C) sprinklers.
b. For use with 200°F (93°C) sprinklers.
Sprinkler Wrench
Specify: RFII Sprinkler Wrench,
P/N 56-000-1-075
Air and Dust Seal
Specify: Air and Dust Seal,
P/N 56-908-1-001
SUPPORT
CUP
SPRINKLER
AIR
AND DUST
SEAL
COVER
PLATE
LIP OF
RETAINER
FACE OF
CEILING
ORIENT
SEAL
BEVEL AS
SHOWN
COVER
PLATE
RETAINER
ASSEMBLY
CLEARANCE
HOLE
FIGURE 5
OPTIONAL AIR AND DUST SEAL
FOR SERIES RFII-MRI (TY3550)
FIGURE 4
DISPOSABLE PROTECTIVE CAP

TFP182
Change History Appendix
Worldwide
Contacts
www.tyco-fire.com
1467 Elmwood Avenue, Cranston, RI 02910 | Telephone [phone]
© 2022 Johnson Controls. All rights reserved. All specifications and other information shown were current as of document revision date and are subject to change without notice.
ISSUE DATE NOTES
08-22
Page 1, added QR code and URL to allow convenient access to electronic version from printed docu-
ment; Page 4, changed corporate address and telephone number to 1467 Elmwood Avenue, Cranston,
RI 02910 | Telephone [phone], formerly 1400 Pennbrook Parkway, Lansdale, PA 19446 | Tele-
phone [phone].
04-21 Removed UL Veried mark (all content pertaining to UL Listing unchanged).
07-20 Added FM Approved for standard response sprinkler only.
04-19 Added UL Veried mark.
12-18 New Technical Data Sheet TFP182 describes Series RFII-MRI Non-Magnetic Concealed Pendent Stan-
dard Coverage Sprinkler.