TFP185
Page 3 of 6
Operation
When exposed to heat from a fire, the
Cover Plate, which is soldered to the
Retainer Ring at three points, falls away
to expose the Sprinkler Assembly, as
shown in Figure 2. The link’s solder
melts when exposed to heat. When
the rated temperature is reached, the
melted solder releases the link, activat-
ing the sprinkler and allowing water to
flow.
Design
Criteria
The TYCO Model RFII HSW Concealed
Sprinkler is UL and C-UL Listed for use
in ordinary and light hazard occupan-
cies, using the requirements specified
in the current NFPA 13 for standard
coverage sidewall sprinklers.
Installation
The TYCO Model RFII HSW Concealed
Sprinkler must be installed in accor-
dance with this section.
A ½ in. (12,7 mm) NPT sprinkler joint
should be obtained with a minimum
to maximum torque of 10 to 20 lb-ft
(13,6 to 27,1 N·m). Higher levels of
torque may distort the sprinkler with
consequent leakage or impairment of
the sprinkler. Do not attempt to com-
pensate for insufficient adjustment in
the Sprinkler Assembly by under-or
over-tightening the sprinkler. Readjust
the position of the sprinkler fitting to
suit.
Step 1.
The sprinkler must only be
installed with its centerline perpen-
dicular to the back wall and parallel to
the ceiling. Use a W-Type 37 Wrench
for installation. The wrench contains
an outer flat surface reference that
correlates with the sprinkler deflec-
tor orientation. The word “UP” on the
installation wrench is to face towards
the ceiling to ensure proper alignment,
as shown in Figure 4.
NOTICE
Do not remove the Protective Cap,
shown in Figure 1, until the Cover Plate
Assembly is installed and/or the fire
protection sprinkler system is ready to
be placed in service.
Step 2.
With pipe thread sealant
applied to the sprinkler threads, and
ensuring that no pipe thread sealant
is in contact with the Deflector Guide
Pins, align the sprinkler alignment slot
with the W-Type 37 Sprinkler Wrench
*
*
FACE OF
SPRINKLER
FITTING
SPRINKLER
ASSEMBLY
WRENCHING
NOTCHES
NOTICE
Factory-assembled protective cap
to remain attached during sprinkler
installation; Temporarily remove to
verify proper deflector orientation
and reinstall during wall finishing;
Remove only after installation is
complete to allow proper sprinkler
performance; LDPE cap may be
recycled accordingly
PROTECTIVE
CAP
CENTERLINE
OF SPRINKLER
WATERWAY
MOUNTING
SURFACE
TOP OF
DEFLECTOR
CAP FULLY
SEATED ON
SPRINKLER
WRENCHING
FLANGE
2-5/8" DIA.
(66,7 mm)
CLEARANCE
HOLE
3-3/16" DIA.
(81,0 mm)
RETAINER
COVER
PLATE
3/16"
(4,8 mm)
WALL
CENTER
MARKING
TIP
RETAINER FLANGE
FLUSH AGAINST
MOUNTING SURFACE
5/32" GAP
(4,0 mm)
SPRINKLER
BODY ENGAGED
BY RETAINER
FRICTION GRIPS
COVER PLATE
ASSEMBLY
1/4" (6,4 mm)
ADJUSTMENT
1-9/16" ± 1/8"
(39,7 mm ± 3,2 mm)
9/16"
(14,3 mm)
FIGURE 3
MODEL RFII HSW CONCEALED SPRINKLER
INSTALLATION CRITERIA
