Reliable G5-56 Dry User manual

Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
Bulletin 051 January 2020
Bulletin 051 January 2020
Model G5-56 Dry (SIN RA5114)
K5.6 (80 metric)
Concealed Dry Pendent
Sprinkler
UL Quick Response
FM Standard Response
½” (13mm) Cover plate Adjustment
Features
1. Flat cover plate with threaded attachment.
2. Cover plate available in chrome and white as Stan-
dard Finishes.
Also available in a wide variety of Special
Application Finishes.
3. Cover plates with gaskets are available to limit
dust and air movement through the ceiling.
4. Available in Ordinary or Intermediate temperature
rating.
5. Sprinkler available in lengths from 4¼inches
(108mm) to 48 inches (1219mm) in ¼-inch
(6.35mm) increments (see Fig. 1).
Approvals & Listings
1. Listed by Underwriters Laboratories and Certified for
Canada (cULus) as a Quick-response sprinkler for Light
and Ordinary Hazard occupancies. UL Guide Number
VNIV, Sprinklers, Automatic and Open.
2. FM Approved as a Standard-response sprinkler.
Patents
The Model G5-56 Dry is covered by the following patents:
U.S. 5,775,431
U.S. 5,967,240
Application
The Model G5-56 Dry is a cULus Listed Quick Response
Concealed Dry Pendent sprinkler intended for use in accor-
dance with NFPA 13. The Model G5-56 Dry sprinkler is cULus
Listed for use in Light and Ordinary Hazard occupancies.
The Model G5-56 Dry is FM Approved as a Standard Re-
sponse Concealed Dry Pendent sprinkler intended for use in
accordance with FM Loss Prevention Data Sheet 2.0.
Product Description
The Reliable Model G5-56 Dry sprinkler is a Dry Pendent
sprinkler, where the sealing washer is located at the inlet end
of the sprinkler assembly. The position of the sealing washer is
controlled by a fusible element at the opposite end of the sprin-
kler assembly. The sprinkler is installed with the fusible element
at the ceiling of a protected space that may be subject to freez-
ing temperatures and the inlet orifice located in a heated area
above the ceiling. Operation of the fusible element allows the
sealing washer to move out of the inlet orifice admitting water
from the supply piping. The sprinkler uses a fast-response fus-
ible element with an Ordinary, 165°F (74°C), or Intermediate,
212°F (100°C), temperature classification.
The Model G5-56 Dry sprinkler has a dropdown deflector
design that allows the sprinkler to be recessed into the ceiling
and concealed by a flat cover plate. The cover plate assembly
threads into the sprinkler’s cup and provides ½-inch (13mm) of
cover adjustment. The cover plate assembly consists of a flat
cover plate that is attached to the skirt using either 135°F (57°C)
or 165°F (74°C) temperature rated solder. The 135°F (57°C)
cover plates are for use with Ordinary temperature classifica-
tion sprinklers and the 165° (74°C) cover plates are for use with
Intermediate temperature classification sprinklers.
The Model G5-56 Dry sprinkler is available in lengths rang-
ing from 4¼ inches (108mm) to 48 inches (1219mm) in ¼-inch
(6.35mm) increments (see Fig. 1). The length of the sprinkler
must be selected to provide the Exposed Minimum Barrel
Length in a Heated Area required by Fig. 2.
The Model G5-56 Dry sprinkler is available with 1-inch NPT
or ISO 7-1 R1 threaded inlet fittings. The standard inlet fitting in-
cludes a long inlet designed to minimize the potential for water,
scale, and sediment to accumulate on the sprinkler inlet in wet-
and dry-pipe sprinkler systems. For wet-pipe sprinkler system
applications where the standard inlet interferes with installation
into existing plastic pipe fittings, an inlet fitting is available with a
short (“PL”) inlet. See Fig. 3 for further information.
Model G5-56 Dry Sprinkler

Note: The “A” dimension is based on a nominally gauged pipe thread “make-up” of 0.600” (15mm) per ANSI B2.1 [7½
threads approximately].
Fig. 1
2.
Technical Data:
Nominal Orifice Size: ½-inch (15mm)
Thread Size: 1-inch NPT per ANSI B2.1 or ISO 7-1 R1
Nominal K Factor: 5.6 (80 metric)
Maximum Working Pressure: 175 psi (12 bar) – 100%
factory hydrostatically tested to 500 psi (34.5 bar)
Sprinkler Installation Wrench: Model FC wrench
Sprinkler Identification Number (SIN): RA5114
Materials: See Fig. 4
Temperature Rating
Classification Sprinkler Cover
Plate
Max.
Ambient
Temp.
Ordinary 165°F (74°C) 135°F (57°C) 100°F (38°C)
Intermediate 212°F (100°C) 165°F (74°C) 150°F (66°C)
“A” Dim. 4¼” to 48” (108mm to 1219mm) in ¼” (6.35mm) increments

Optional Cover Plate with Gasket*
Model G4/G5
QR Gasket
Cover Plate
(cULus Listed)
Model G4/G5 SR Gasket
Cover Plate
(FM Approved)
* Model G4/G5 QR Gasket and Model G4/G5 SR Gasket cover
plates are sold as assembled units including both the cover
plate and gasket. Model G4 /G5 QR Gasket and Model G4 /G5
SR Gasket cover plates and gaskets are not interchangeable.
Installation Instructions
Model G5-56 Dry sprinklers must only be installed in stan-
dard (ANSI B 16.3 class 150 and ANSI B 16.4 class 125)
pipe tees in the horizontal position, even at branch line ends.
Model G5-56 Dry sprinklers shall not be installed into elbows
or pipe couplings located on drop nipples to the sprinklers.
In all installations, including into CPVC piping, the dry sprin-
kler shall be installed with protrusion into the fitting in accor-
dance with the installation diagrams in this Bulletin.
Installation of the Model G5-56 Dry sprinkler is not recom-
mended in copper pipe systems, as this may reduce the
life expectancy of the sprinkler. Do not install Model G5-56
Dry sprinklers with the standard (long) inlet fitting into CPVC
adapter fittings or tees that have an internal obstruction (see
Fig. 3); this will damage the sprinkler, the fitting, or both. A
short inlet (“PL”) version of the Model G5-56 Dry sprinkler is
available for use in existing installations with CPVC adapter
fittings or tees having an internal obstruction; Model G5-56
sprinklers with the short inlet fitting shall not be used on dry-
pipe sprinkler systems. The Model G5-56 Dry sprinkler and
the cover plate assembly are not intended for installation in
corrosive environments, including, but not limited to, those
with salt aerosols or chlorine.
Model G5-56 Dry sprinklers must be installed with the Ex-
posed Minimum Barrel Length required by Fig. 2 located in
a Heated Area. Do NOT install the sprinkler in ceilings which
have positive pressure in the space above.
The following steps must be followed for
installation:
1. Cut a 25
/
8-inch (67mm) diameter hole in the ceiling di-
rectly in-line with the outlet of the tee.
2. Apply pipe joint compound or Polytetrafluoroethylene
(PTFE) tape to the threads of the sprinkler’s inlet fitting.
3. A protective cap is provided to protect the drop-down
sprinkler deflector from damage which could occur dur-
ing construction before the cover plate is installed. The
cap is factory installed inside the sprinkler cup. Remove
the cap to install sprinkler, Step 4, then reinstall cap until
the cover plate is installed.
4. Install the sprinkler in the tee using the Model FC
wrench. The Model FC wrench has a socket drive which
is inserted into the sprinkler’s cup and around the body
of the sprinkler prior to installation of the sprinkler. Do
NOT wrench any of the part of the sprinkler/cup assem-
bly. The sprinkler is then tightened into the pipe fitting
to achieve a leak free connection. The recommended
minimum to maximum installation torque is 22-30 lb-ft
(30 – 40 N-m). When inserting or removing the wrench
from the sprinkler/cup assembly, care should be taken
to prevent damage to the sprinkler. Reinstall the protec-
tive cap following installation of the sprinkler, until the
cover plate is installed.
a. Alternatively, where access to the outer tube of the
sprinkler is available, the Model G5-56 Dry sprin-
kler may be installed using a pipe wrench. The
protective cap should not be removed to install
the sprinkler with a pipe wrench. The pipe wrench
shall only be permitted to interface with the steel
outer tube portion of the sprinkler (Item #8 in
Fig. 4). Do NOT wrench any other portion of the
sprinkler/cup 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 sprinklers because
the installation torque will have to be matched or
exceeded to remove the sprinkler. The recom-
mended minimum to maximum installation torque
is 22-30 lb-ft (30 – 40 N-m).
5. To install the cover plate, remove the protective cap and
install the cover plate by hand turning the cover in the
clockwise direction until it is tight against the ceiling. For
Model G4 /G5 QR Gasket and Model G4 /G5 SR Gas-
ket cover plates, the gasket should be attached to the
flange of the cover plate skirt only. Do not glue the gas-
ket in place or allow the gasket to overlap both the cover
plate and the flange of the skirt.
Model FC
Sprinkler Wrench
3.
Cover Plate Finishes
Standard Finishes
White Paint
Chrome
Special Application
Finishes
Off White Paint
Black Paint
Custom Color Paint – Specify(1)
Raw Brass (Lacquered)
Bright Brass
Finished Bronze
Black Plated
Satin Chrome
Stainless Steel Clad(2)
(1) Custom color paint is semi-gloss, unless specified otherwise.
(2) Stainless steel clad cover plates are Type 316 Stainless Steel on the finished
side and C102 Copper Alloy on the back side. Cover plates are not listed
or approved as corrosion resistant. Stainless steel clad cover plates are not
available perforated.

4.
Fig. 2

5.
Fig. 3

Maintenance
The Model G5-56 Dry should be inspected and the sprin-
kler system maintained in accordance with NFPA 25. Do
not clean sprinklers with soap and water, ammonia or any
other cleaning fluids. Replace any sprinkler that has been
painted (other than factory applied) or damaged in any
way. Concealed sprinklers cover plates can not be painted
in the field, after installation or have any other coating ap-
plied other than the factory finish. A stock of spare sprin-
klers should be maintained to allow quick replacement of
damaged or operated sprinklers. Prior to installation, sprin-
kler should be maintained in the original cartons and pack-
aging to minimize the potential for damage to sprinklers
that would cause improper operation or non-operation.
Engineering Specification
Model G5-56 Dry Pendent Concealed Sprinkler
Dry pendent sprinklers shall be dry pendent concealed
sprinklers with a flat cover plate. Sprinklers shall be cU-
Lus Listed as Quick Response for Light and Ordinary
Hazard applications as well as FM Approved as Standard
Response. Sprinklers shall be available in lengths from
4¼ inches (108mm) to 48 inches (1219mm) in ¼-inch
(6.35mm) increments based on face of fitting to finished
ceiling distance. Sprinkler length shall be selected to pro-
vide the Exposed Minimum Barrel Length based on the
minimum design temperature in the protected area and
the minimum temperature in the conditioned space where
the barrel is located in accordance with the Manufactur-
er’s written installation instructions. Sprinklers shall have
[1-inch NPT][ISO 7-1 R1] threaded inlet fittings with [stan-
dard length inlets designed for use with wet- or dry-pipe
sprinkler systems][short length inlets designed for use with
wet-pipe sprinkler systems having pipe fittings with internal
obstructions that prevent the insertion of standard length
inlets]. Sprinklers shall have a PTFE coated beryllium nick-
el Belleville spring washer inlet seal and brass alloy cap
that prevent water entry from the sprinkler system piping
into the sprinkler prior to actuation. Sprinklers shall have
a fast-response fusible link that controls the movement of
the inlet seal and cap through a mechanism consisting of
link arms, a seat adapter, an orifice adapter, an inner tube,
and a yoke. Sprinklers shall use a drop down deflector
supported by tapered pins. Sprinklers shall have a galva-
nized steel cup for threaded attachment of the flat cover
plate assembly. Cover plate attachment shall provide up
to ½-inch (13mm) of adjustment. Sprinklers shall be [Ordi-
nary temperature classification, 165°F (74°C), with 135°F
temperature rated cover plates][Intermediate temperature
classification, 212°F, with 165°F temperature rated cover
plates]. Cover plates shall be [solid][perforated] with facto-
ry applied [White][Chrome][Special Application – Specify]
finish. Dry pendent concealed sprinklers shall be Reliable
Model G5-56 Dry (SIN RA5114).
Ordering Information
Specify:
1. Sprinkler: Model G5-56 Dry
2. Threads: [1-inch NPT - standard][ISO 7/1 R1 - optional]
3. Inlet Length: [Standard][Short (“PL”)– for existing wet-
pipe installations only]
4. Cover Plate Finish: [White][Chrome][Special Applica-
tion – Specify]
5. Sprinkler/Cover Plate Temperature Rating: [Ordinary –
165°F sprinkler with 135°F cover plate][Intermediate –
212°F sprinkler with 165°F cover plate]
6. Nominal Sprinkler Length (face of fitting to face of
ceiling - “A” Dimension from Fig. 1): [Specify length –
Lengths available from 4¼ inches to 48 inches (108mm
to 1219mm) in ¼-inch (6.35mm) increments]
6.

Fig. 4
Reliable Automatic Sprinkler Co., Inc.
[phone] Sales Offices
[phone] Sales Fax
[phone] Corporate Offices
www.reliablesprinkler.com Internet Address
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Revision lines indicate updated or new data.
EG. Printed in U.S.A. 01/20 P/N 9999970480
The equipment presented in this bulletin is to be installed in accordance with the latest published Standards of the National Fire Protection Association, Factory
Mutual Research Corporation, or other similar organizations and also with the provisions of governmental codes or ordinances whenever applicable.
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