2
Rigid Support Collar
Omega HEC Sprinkler Wrench
Tamper-proof Socket
Note: A special tamper-proof socket must be used for installation or removal of the tamper-resistant retaining screws.
Installation Diagram - HEC-12 PRO
Finished Ceiling
Finished Wall
Closure Plate (Optional)
Ridgid Support Collar With Hex
Bolt (To prevent movement of
sprinkler head away from
finished wall surface)
Retaining Collar
Branch
Line Fitting
1" N.P.T. Steel Nipple
1" x 1/2" N.P.T. Reducer
Escutcheon
Tamper-Resistant Screw
2 1/4" Dia. Hole In Wall
2 1/2" Escutcheon
3 5/8" Dia. (Escutcheon Closure Plate)
1/2"
1 7/16"
±
1/16" No Closure Plate
1 3/8"
±
1/16" Escutcheon Closure Plate
1 5/16"
±
1/16" Security Closure Plate
4 1/2" Dia. (Security Closure Plate)
1/4"
±
1/16"
3/4"
3/8"
2 3/4"
* Shown for reference only, not a height restriction.
4" to 12"
14'-0" (throw)
Centerline of Room
*8'-0"
7'-0"
7'-0"
(1/2 width)
One(1) Head 15 GPM @ 7 PSI
One(1) Head 22 GPM @ 15 PSI
One(1) Head 31 GPM @ 30 PSI
Nominal Wetting Patterns for 14' x 14' Room
HEC-12 PRO
Horizontal
Sidewall Sprinkler
Farwall
Backwall
OBSOLETE
