3.
Maintenance
Model DH80 Quick-Response Dry Sprinklers should be
inspected and the sprinkler system maintained in accordance
with NFPA 25. Do not remove the factory applied thermally
sensitive wax fillet between the bulb supporting cup and the
wrenching boss. Do not replace this wax with a substitute
substance. An alternate substance may interfere with
proper operation of the sprinkler. Do not clean sprinklers
with soap and water, ammonia or any other cleaning fluids.
Remove dust by gentle vacuuming. Replace any sprinkler
which has been painted (other than factory applied) or
damaged in any way. A stock of spare sprinklers should
be maintained to allow quick replacement of damaged or
operated sprinklers. Prior to installation, sprinklers should
be maintained in their original cartons and packaging until
used to minimize the potential for damage to sprinklers that
would cause improper operation or non-operation.
Model DH80 Dry Quick-Response
Extended Coverage Horizontal
Sidewall Sprinkler Specification
Sprinklers shall be cULus Listed quick-response
extended coverage horizontal sidewall sprinklers for light
hazard occupancies. Sprinklers to be of bronze frame
construction with a special deflector capable of providing a
discharge over a coverage area of 28 ft. (8.5 m) wide, and
14 ft. (4.3 m) long horizontal throw. Sprinklers shall have
[standard escutcheons][extended escutcheons][recessed
escutcheons][conical concealed cover plates] produced by
the manufacturer of the sprinklers and cULus Listed for use
with the sprinklers. Water seal assembly shall consist of a
PTFE coated Belleville spring washer. Sprinklers should be
cULus Listed to permit deflectors to be positioned 4“ (102
mm) to 12” (305 mm) below the ceiling. Sprinklers shall
have a nominal K-Factor of 8.0 (115 metric), and [1” NPT]
[ISO 7-1R1] threads. Sprinkler temperature rating shall
be [155°F (68°C)][175°F (79°C)][200°F (93°C)]. Rated
working pressure shall be 175 psi (12 bar). Sprinkler and
escutcheon finish shall be [white polyester][black polyester]
[chrome][bronze/brass][Special Application - Note: Specify
based on Finishes table]. [Conical concealed cover plate
finish shall be [white paint][Special Application - Note:
Specify based on Finishes table].] [Sprinklers shall be cULus
Listed as Corrosion Resistant (Note: available with white
polyester, black polyester, and ENT finishes only) (Note: not
available with sprinklers using the Model SWC cover plate)].
Quick-response extended coverage horizontal sidewall dry
sprinklers shall be Reliable Model DH80 Dry, SIN RA5532
(Bulletin 055).
Step 3
Step 2
Step 1
Fig. 3 - XLO2 Wrench
Fig. 2 - F3R Wrench
Installation Data:
Escutcheon or
Cover Plate Option
Recommended
Hole Diameter
Installation
Wrench
Standard escutcheon
2-1/8” (54 mm)
F3R
HB extended escutcheon
2-1/2” (64 mm)
F3R
FP recessed escutcheon
2-5/8” (67 mm)
XLO2
SWC cover plate
2-1/8” (54 mm)
XLO2
