Reliable DH80 Dry Manual

Coverage up to 28 feet wide and 14 feet long
Features:
1. cULus Listed as Quick-response for Light Hazard applica-
tions only.
2. Available with a Standard, Model HB (extended), or Model
FP (recessed) escutcheon, as well as the Model SWC (con-
cealed) cover plate.
3. Sprinkler available in lengths up to 36" (900 mm) in 1/4" (6
mm) increments (see Fig. 4-7).
4. Listed deflector to ceiling distance of 4" (102 mm) min. to
12" (305 mm) max.
5. Minimum spacing between sprinklers of 14 feet (4.3 m).
6. Sprinkler available in white or black polyester, chrome, and
bronze standard finishes as well as custom color polyester
and Electroless Nickel PTFE (ENT) special application fin-
ishes.
7. White polyester, black polyester, and ENT finish sprinklers
are cULus Listed as Corrosion Resistant (not applicable to
concealed sprinklers).
(1) See Fig. 9.
Approval Organizations
1. Listed by Underwriters Laboratories Inc. and
UL certified for Canada (cULus) as a quick-response extend-
ed coverage sprinkler for Light Hazard occupancies.
Patents
US Patent No. 7,841,418
Products Description
The Model DH80 Dry sprinkler is a quick-response extended
coverage horizontal sidewall sprinkler for use in Light Hazard
applications. The sprinkler has a nominal K-Factor of 8.0 (115
metric). The sprinkler is designed with a spray pattern that is
cULus Listed to provide a coverage of 28 feet (8.5 m) along
the wall where the sprinkler is installed and projecting 14 feet
(4.3 m) from the wall where the sprinkler is installed, as shown
in Fig. 9.
The Model DH80 Dry sprinkler is available with a standard es-
cutcheon (Fig. 4), a Model HB extended escutcheon (Fig. 5), a
Model FP recessed escutcheon (Fig. 6), or a Model SWC cover
plate (Fig. 7). The can or cup, used to mount the escutcheon or
cover plate, is factory installed. The Model FP escutcheon and
Model SWC cover plate are the only recessed escutcheon and
cover plate, respectively, listed for use with the Model DH80
Dry sprinkler.
Model DH80 Dry sprinklers are available in nominal lengths
up to 36" (900 mm). Dimensional information for Model DH80
Dry sprinklers is provided in Figures 4 through 7, depending on
the escutcheon or cover plate option selected.
The sealing washer in the Model DH80 Dry sprinkler is locat-
Model DH80 Dry (SIN RA5532)
K8.0 (115 metric)
Extended Coverage
Horizontal Sidewall Sprinkler
.
(1)
Model DH80 Dry sprinkler with Standard escutcheon
Model DH80 Dry sprinkler with Model HB escutcheon
Model DH80 Dry sprinkler with Model FP recessed escutcheon
Model DH80 Dry sprinkler with Model SWC cover plate
ed at the inlet end of the sprinkler assembly. The position of the
sealing washer is controlled by a fluid-filled glass bulb thermal
element at the opposite end of the sprinkler assembly. When in-
stalled on a wet-pipe sprinkler system in accordance with Fig. 8,
the Model DH80 sprinkler is installed with the thermal element
in a protected space that may be subject to freezing tempera-
tures and the inlet orifice located in a heated area that is sep-
arated from the protected space. Model DH80 sprinkler may
also be installed on dry-pipe and preaction sprinkler systems.
Operation of the sprinkler's thermal element allows the sealing
washer to move out of the inlet orifice admitting water from the
supply piping. Material Specifications for the Model DH80 Dry
sprinkler are provided in Fig. 11.
Bulletin 055 February 2021