Tyco Fire Product CENTRAL Omega HEC-20 Instruction Manual

Omega HEC-20
Extended Coverage (16' x 18')
Extended Coverage Quick Response (16' x 18')
Horizontal Sidewall Automatic Sprinkler
Manufactured by: Central Sprinkler Company
451 North Cannon Avenue, Lansdale, Pennsylvania 19446
Product

Description

The Omega Model HEC-20 is an
extremely versatile sidewall sprinkler.
It may be used as either an extended
coverage or extended coverage quick
response horizontal sidewall. The
HEC-20 operates five to six times
faster than a standard sprinkler. It
offers a high degree of protection for
human life which features a spray
pattern that has been shown to be
effective in the control or
extinguishment of fire in light hazard
occupancies.
The Model HEC-20 Extended
Coverage Horizontal Sidewall
Sprinkler may be installed from 12 to
20 inches below the ceiling. It is
ideally suited for installation in
buildings where unusual ceiling
obstacles, beams, soffits or
mechanical equipment pose design
difficulties.
The Model HEC-20 is Listed* by
Underwriters Laboratories for use as
an Extended Coverage and as a
Extended Coverage Quick Response
horizontal sidewall sprinkler that
qualifies for installation in light hazard
occupancies in accordance with
current NFPA 13 and NFPA 13R
Standards.
The Model HEC-20 is available in
two standard finishes, chrome plated
or brass plated. Its mating
escutcheon plate is available in three
standard finishes, chrome plated,
brass plated or white painted.
Additional special finishes are
available.
* For specific listing requirements see the appropriate
information contained in this brochure.
Operation: A fusible alloy pellet is
compressed with a bearing disc into a
copper housing by a ball plunger.
Heat is absorbed by the heat
collecting fins and conducted to the
alloy pellet. At the rated temperature
the alloy melts, causing the ball
plunger to drop, freeing balls from the
retaining groove. This movement
allows system water pressure to force
the orifice sealing mechanism and
deflector assembly open. Water is
then discharged in a designed flow
pattern.
Technical
Data
Model: HEC-20
Style: Horizontal Sidewall
1
Orifice Size: ⁄ "
(12.7 mm)
2
K Factor: 5.6
(80.08)
1
Thread Size: ⁄ " N.P.T.
(12.7 mm)
2
Temperature Rating: 145 o F/63
o
160 F/71
Approvals: U.L., U.L.C., M.E.A.
(375-75-SA)
Maximum Working Pressure: 175 psi
Factory Hydro Test: 100% at 500 psi
Standard Finishes:
Sprinkler: chrome plated and
brass plated
Escutcheon: chrome plated, brass
plated, white painted
Length: 2 3 ⁄ "
(60.33 mm)
8
Width: 1 3 ⁄ "
(34.93 mm)
8
Weight: 4.5 oz.
(128 grams)
HEC-20
1
⁄ " Orifice
2
Horizontal
Sidewall
Automatic
Sprinkler
o C
o
C
3-92
No. 1-8.0