Reliable DH56 Dry Quick Start Manual

For coverages up to 28 feet wide and 10
feet long . 250 psi (17,2 bar) rated.
(1)
Features:
1. Coverage for long and narrow spaces such as hallways, cor-
ridors, decks and rooms up to 28 feet wide and 10 feet long.
(1)
2. Deflector to ceiling dimensions are:
4" (102mm) min. to 12" (305mm) max.
3. Minimum spacing between sprinklers 16 feet (4.9m).
4. Polyester Coated or Electroless Nickel PTFE Plated Corro-
sion Resistant Sprinklers.
*Concealed Sprinkler is not corrosion resistant.
5. UL Listed for extended coverage, light hazard applications.
6. 5.6 K Factor.
7. Sprinkler is approved for
250 psi (17,2 bar) applications.
8. Quick response performance.
9. ½" (13mm) adjustment of escutcheon and cover.
10. Concealed cover plate can prevent the sprinkler from being used
for unintended purposes. No exposed thermal element with the
concealed version.
11. Push-on/thread-off sturdy convenient escutcheon for recessed
and cover for concealed.
12. Factory assembled sprinkler & cup, shipped complete with
bulb protector for concealed and FP recessed versions.
13. Sprinkler & cup assembly and escutcheon or cover are sep-
arately packaged.
14. Available in a variety of plated and painted finishes
(1) See Fig. 10.
Approval Organizations
• Listed by Underwriters Laboratories Inc. and
UL certified for Canada (cULus)
Patents
US Patent No. 7,841,418
Products Description
The Model DH56 are quick response extended coverage
sidewall dry sprinklers for use in light hazard applications. The
Model DH56 dry sprinkler with SWC cover plate is a concealed
sprinkler that uses Reliable's push on/thread off sidewall cover.
This sprinkler has the cup factory mounted and is shipped with
a bulb protector that protects the 3mm frangible glass bulb dur-
ing shipping and post installation finishing operations. The DH56
can be combined in the field with the FP Escutcheon to make a
recessed dry sprinkler. The SWC cover plate and FP recessed
escutcheons have ½" adjustment. The SWC cover plate is at-
Model DH56 Dry (SIN RA1664)
K5.6 (80 metric)
Extended Coverage
Horizontal Sidewall Sprinkler
(1)
tached with 135 & 165 degree solder. In the event of a fire the
rising ambient temperature melts the solder and the cover plate
is ejected away by springs exposing the 3mm frangible glass
bulb. The use of a 3mm bulb allows quick response which en-
ables the sprinkler to apply water to a fire sooner than standard
response sprinklers of the same temperature rating.
Model DH56 dry sprinklers are intended for use in dry and
preaction systems to protect areas subjected to freezing tem-
peratures and unheated portions inside and outside buildings.
See Fig. 8 for guidelines on using dry sprinklers in wet systems.
Bulletin 016 February 2021
DH56 HSW
DH56 HSW/HB
DH56 HSW FP Recessed
DH56 HSW Concealed
with SWC cover plate