Reliable DH56 Dry EC Installation Instructions Manual

Features
• Coverage for long and narrow light hazard spaces such as
hallways, decks, and rooms
• Coverage area up to 28 ft (8.5m) long and 10 ft (3m) deep
• Available in four trim styles and a variety of finish combina-
tions.
Product Description
The Reliable Model DH56 Dry Extended Coverage Horizontal
Sidewall Sprinkler is a quick-response sprinkler utilizing a
sensitive 3mm glass bulb thermal element listed for use in light
hazard applications.
Dry sprinklers are intended for use on wet, dry, and preaction
systems to protect indoor and outdoor areas that are subject
to freezing. When used on wet systems, it is important that a
minimum exposed length of barrel inside the face of the wall or
insulation is provided to offset conduction of potentially freezing
temperatures from the unconditioned (sprinkler) end along the
barrel. See Figure 6 for guidelines on using dry sprinklers on wet
systems.
Environments where dry sprinklers are employed are often
corrosive. For this reason, Model DH56 dry sprinklers have a
special wax fillet placed in the gap between the cup that
supports the bulb and the wrenching boss. This wax prevents
contaminants from entering the internal portion of the drop nipple
and must not be removed.
Max. Working
Sprinkler Model
DH56 Dry EC
Maximum Coverage Area
Pressure Width x Length
psi (bar) ft x ft (m x m)
28 x 8 (8.5 x 2.4)
250 (17.2)
28 x 10 (8.5 x 3)
Model DH56 Dry Extended Coverage
DH56 Dry EC HSW with standard escutcheon
Application
The Model DH56 is a horizontal sidewall dry sprinkler intended for
installation in light hazard occupancies in accordance with NFPA
13. These sprinklers are designed to provide fire protection in
long and narrow spaces such as hallways, corridors, decks and
rooms up to 28 feet (8.5m) wide and 10 feet (3m) deep. Model
DH56 sprinklers are rated for 250 psi (17.2 bar) and can be
mounted between 4 and 12 inches (102 and 305mm) down from
the ceiling.
Flow Rate
gpm (L/min)
23 (87.1)
28 (106)
www.reliablesprinkler.com
Bulletin 016 January 2022
Horizontal Sidewall Sprinkler
Sprinkler
Pressure
Identification
psi (bar)
Number (SIN)
16.9 (1.2)
25 (1.7)
cULus Listed
Table A
RA1664