3
Technical
Data
Design Requirements — Extended Coverage Quick Response Applications
Design
Data
*Teflon is a trademark of the DuPont Corp.
Coverage Area
Minimum
"A"
Width
Throw
Flow
Deflector Distance
Temperature
(Ft.)
(Ft.)
(pressure)
Below Ceiling
Rating
16
18
29 gpm (26.8 psi)
4" - 6"
160
o
F/71
o
C
16
18
30 gpm (28.7 psi)
6" - 12"
160
o
F/71
o
C
16
20
32 gpm (32.7 psi)
4" - 6"
160
o
F/71
o
C
Coverage Area
Minimum
"A"
Width
Throw
Flow
Deflector Distance
Temperature
(Ft.)
(Ft.)
(pressure)
Below Ceiling
Rating
16
16
26 gpm (21.6 psi)
4" - 12"
145
o
F/63
o
C;160
o
F/71
o
C
16
18
29 gpm (26.8 psi)
4" - 6"
145
o
F/63
o
C
16
18
30 gpm (28.7 psi)
6" - 12"
145
o
F/63
o
C
In Extended Coverage Quick Response Applications, the Model HEC-12EC PRO
Sprinklers are listed for installation in light hazard occupancies only.
Installation Sequence
Step 1. The sprinkler must be
installed in the horizontal position 4"
to 12" below ceiling.
Step 2. Install the steel nipple into
the branch line fitting, then slide the
rigid support collar over the nipple
prior to installing the 1" x
1
⁄
2
" reducing
coupling. The face of the sprinkler
fitting should be installed:
(a) 1
7
⁄
16
" (
±
1
⁄
16
") behind the finished
wall if no closure plate is
utilized.
(b) 1
3
⁄
8
" (
±
1
⁄
16
") behind the finished
wall if the light gauge
escutcheon closure plate is
utilized.
(c) 1
5
⁄
16
" (
±
1
⁄
16
") behind the finished
wall if the security
closure
plate is utilized.
The sprinkler nipple must be fitted
with the rigid support collar to prevent
movement of the sprinkler away from
the finished wall surface (see
installation diagram on page 2).
Step 3. Use only a non-hardening
pipe joint compound or Teflon* tape.
Apply to the male threads only.
Model: HEC-12EC PRO
Style: Horizontal Sidewall
Orifice Size:
1
⁄
2
"
(12.7 mm)
K Factor: 5.6
(80.08)
Thread Size:
1
⁄
2
"
(12.7 mm)
N.P.T.
Temperature Rating:
145
°
F/63
°
C,
160
o
F/71
o
C
Approvals: U.L., U.L.C.,
M.E.A. (46-92-M Vol. II)
Maximum Working Pressure: 175 psi
Factory Hydro Test: 100% at 500 psi
Standard Finishes:
Sprinkler: brass, chrome plated
Escutcheon: brass, chrome plated,
white painted
Escutcheon Closure Plate: brass,
chrome plated, white painted
Security Closure Plate: chrome
plated, brass plated,
white painted
Length: 2
3
⁄
8
"
(60.3 mm)
Width: 2"
(50.8 mm)
Weight: 6.8 oz.
(193 grams)
Prohibitor
TM
sprinklers must be
installed in accordance with current
NFPA 13. Deviations from these
requirements and standards, or any
alteration to the sprinkler itself, will
void any warranty made by Central
Sprinkler Company. In addition,
installation must also meet local
government provisions, codes, and
standards as applicable.
The system piping must be properly
sized to ensure the proper flow rate at
the sprinkler.
Prior to installation, check for
proper model, style, orifice size, and
temperature rating. Install sprinklers
after the piping is in place to avoid
mechanical damage; replace any
damaged unit. Wet pipe systems
must be protected from freezing.
Upon completion of the installation,
the system must be tested per
recognized standards.
In the event of a thread leak,
remove the unit, apply new pipe joint
compound or tape, and reinstall.
Design Requirements — Extended Coverage Applications
Installation
Step 4. Hand tighten the sprinkler into
the reducing coupling. Use an Omega
HEC sprinkler wrench to tighten the
unit into the fitting. A leak tight joint
requires the application of only 7 to 14
ft.-lbs. of torque. A tangential force of
14 to 28 lbs. delivered through a 6"
long handle will deliver adequate
torque. Torque levels over 21 ft.-lbs
may distort the orifice seal, resulting in
leakage.
Step 5. During installation of the
sprinkler, check the alignment of
retaining collar holes with final
orientation of sprinkler escutcheon.
Step 6. To install the escutcheon plate
(and closure plate if applicable),
align it (them) with and press it (them)
over the sprinkler body until the outer
edge of the escutcheon (or closure
plate) meets the mounting surface. Do
not over or under tighten the sprinkler
to compensate for inaccurate
escutcheon plate adjustment.
Step 7. Install the tamper resistant
retaining screws through the
escutcheon and into the retaining
collar, thereby drawing the escutcheon
In Extended Coverage Applications, the Model HEC-12EC PRO Sprinklers are listed for
installation in light hazard occupancies only.
OBSOLETE
