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of the sprinkler (Item #8 in Fig. 10). Do NOT wrench any
other portion of the sprinkler assembly. A pipe wrench
can install the sprinkler into the fitting with a large amount
of torque; consideration should be given to the need for
future removal of the sprinkler because the installation
torque will have to be matched or exceeded to remove
the sprinkler. The recommended minimum to maximum
installation torque is 22-30 lb-ft (30 – 40 N-m).
4. Standard and Model HB escutcheons can be installed
by slipping the escutcheon over the can until the es-
cutcheon is seated against the wall. The Model FP es-
cutcheon is installed by pressing or threading the es-
cutcheon into the cup by hand; the escutcheon can be
tightened against the wall by turning the escutcheon in
a clockwise direction and removed by turning the es-
cutcheon in a counter-clockwise direction. To install the
Model SWC cover plate, first remove the protective cap,
if installed, and clip. Install the Model SWC cover plate
on the sprinkler by pressing or threading the cover plate
into the cup by hand; the cover plate can be tightened
against the wall by turning the cover plate in a clock-
wise direction and removed by turning the cover plate in
a counter-clockwise direction. The Model FP recessed
escutcheon and Model SWC cover plate are the only re-
cessed escutcheon and cover plate, respectively, listed
for use with the Model DH80 Dry sprinkler; the use of
any other recessed escutcheon or cover plate with the
Model DH80 Dry sprinkler will void all guarantees, war-
ranties, listings and approvals.
5. Remove the protective cap, if installed, and clip when
placing the sprinkler system in service.
Installation Data:
Escutcheon or
Cover Plate Option
Standard escutcheon
HB extended escutcheon
FP recessed escutcheon
SWC cover plate
Step 1
Step 2
Step 3
Fig. 2 - Model XLO2 Wrench
Recommended
Installation
Hole Diameter
Wrench
2-1/8" (54 mm)
F3 or F3R
2-1/2" (64 mm)
F3 or F3R
2-5/8" (67 mm)
XLO2
2-1/8" (54 mm)
XLO2
Fig. 3 - Model F3 and Model F3R wrench
Maintenance
Model DH80 Quick-Response Dry Sprinklers should be in-
spected 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 al-
low 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 po-
tential 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 occu-
pancies. 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 escutch-
eons][extended escutcheons][recessed escutcheons][coni-
cal 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) be-
low 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 poly-
ester][black polyester][chrome][bronze/brass][Special Ap-
plication - Note: Specify based on Finishes table]. [Conical
concealed cover plate finish shall be [white paint][Special Ap-
plication - 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).
4.
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