2
Figure 1
HEC-12EC PRO
Finished Ceiling
Finished Wall
Closure Plate (Optional)
Rigid 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
1/2"
1/4"
±
1/16"
3/4"
2 3/4"
3/8"
A
2 1/4" Dia. Hole in Wall
2 1/2" Escutcheon
4 1/2" Dia. (Security Closure Plate)
3 5/8" Dia. (Escutcheon Closure Plate)
1 7/16"
±
1/16" No Closure Plate
1 3/8"
±
1/16" Escutcheon Closure Plate
1 5/16"
±
1/16" Security Closure Plate
Note: The special tamper-proof socket must be used for installation or removal of the tamper-resistant retaining screws.
Rigid Support Collar with Bolt
(Part #162-018-01)
Tamper-proof Socket
(Part #160-07-000)
Omega HEC Sprinkler Wrench
(Part #15932000)
OBSOLETE
