Tyco Fire Product CENTRAL GB

To Next Page

Manufactured by: Central Sprinkler Company

451 North Cannon Avenue, Lansdale, Pennsylvania 19446

Product

Description

No. 5-6.0

The Model GB and GB-QR Quick

Response Dry Horizontal Sidewall Glass

Bulb Sprinklers allow the installation of

sprinklers in areas subject to freezing

while being supplied from a wet pipe

sprinkler system. They are available in

standard response (5mm bulb) or quick

response (3mm bulb).

A significant installation feature for the

extended version is the built in 3" (76.2

mm) of adjustment. This allows installa-

tion of common lengths and can com-

pensate for field variations.

Because the Model GB and GB-QR Dry

Horizontal Sidewall is allowed with NFPA

13 spacings for sidewall sprinklers in

either light or ordinary hazard, it can throw

considerably further than the alternative

method suggested in NFPA 13 for a dry

sidewall sprinkler on a 45° angle.

The GB Dry Sidewall sprinkler is

available flush or extended and the GB-

QR dry sidewall is available recessed,

flush or extended. Both versions are

available with a special slatted wall

escutcheon. This escutcheon

compensates for the angle of the siding

on the outside of the wall.

A larger wrench boss allows the

sprinkler to be installed into the

branchline tee using a sprinkler wrench.

This allows easy installation in “hard”

walls such as sheet rock as the barrel of

the dry sidewall would be inaccessible.

The Model GB and GB-QR Dry

Sidewalls have a maximum adjustment of

±1

⁄2" (38.1 mm) in the extended version,

allowing ease of field installation and

ordering. The Model GB dry sidewall is

available recessed or flush for situations

that require a more aesthetic appearance.

1-98

GB & GB-QR Dry Sidewall

Standard and Quick Response

Flush, Recessed or Extended

Glass Bulb Sprinkler

Operation: The glass bulb capsule

operating mechanism contains a heat-

sensitive liquid that expands upon

application of heat. At the rated

temperature, the frangible capsule

ruptures, thereby releasing the orifice

seal. The sprinkler then discharges

water in a pre-designed spray pattern

to control or extinguish the fire.

⁄2

(12.7 mm)

Orifice

Dry Sidewall

Automatic

Sprinkler

Model: GB and GB-QR Dry Sidewall

Style: GB: Flush or Ext. Only

GB-QR: Flush, Rec., Ext.

Escutcheon: Recessed or Extended

Wrench:

Offset

(flush & extended)

Part #1068

Universal

(recessed sidewall)

Part

#1069

Orifice Size:

⁄2"

(12.7 mm)

K-Factor: See K-Factor Table on Page 2.

Thread Size: 1"

(25 mm)

N.P.T.

Temperature Rating & Bulb Color:

135°F/57°C Orange

155°F/68°C Red

175°F/79°C Yellow

200°F/93°C Green

*286°F/141°C Blue

*360°F/182°C Purple

*Standard Response Only.

Approval: U.L., U.L.C.

Maximum Working Pressure:

175 psi (12.1 bar)

Factory Hydro Test: 100% at

500 psi (34.5 bar)

Standard Finishes: brass, chrome

plated, white

Escutcheon: brass, chrome plated and

white painted

Technical

Data

Corrosion-Resistant Coatings

(U.L.

Only)

: white and black painted

Highest Allowable Ambient Storage

Temperature: 100°F/38°C

OBSOLETE

Need help?

Do you have a question about the Tyco Fire Product CENTRAL GB and is the answer not in the manual?

Summary

GB & GB-QR Dry Sidewall Product Description

Operation

Describes the heat-sensitive liquid mechanism that releases water upon application of heat.

GB & GB-QR Dry Sidewall Technical Data

Model and Style Specification

Details sprinkler models (GB, GB-QR) and their available styles (Flush, Recessed, Extended).

Technical Specifications

Covers orifice size, K-factor, thread size, temperature ratings, working pressure, and finishes.

Ordering Length for Dry Sidewall Sprinklers

Flush and Recessed Ordering Length

Specifies 'A' dimension measurement for flush and recessed sprinkler ordering lengths.

Slatted Walls Ordering Length

Details 'A' dimension measurement for slatted wall sprinkler ordering lengths.

Extended Sidewall Ordering Length

Defines adjustment ranges and 'A' dimension measurement for extended sidewall sprinklers.

Dry Pendent Design Guidelines

K-Factor Determination

Provides a table and steps to determine the K-factor based on sprinkler length.

Design Data and Installation

Standard Application Requirements

Details design requirements for standard area coverages and flow needs per NFPA 13.

Installation Guidelines

Covers installation into threaded tees, use of pipe compound, tightening torque, and escutcheon plate installation.

Installation Sequence Steps

Step 1: Tee Installation

Unit must be installed into a threaded, cast iron, ductile iron, or malleable iron tee.

Step 2: Pipe Compound

Use only non-hardening pipe joint compound or Teflon tape applied to male threads.

Step 3: Tightening

Hand tighten assembly and use appropriate wrench; requires 7-14 ft-lbs torque.

Step 4: Escutcheon Plate Installation

Align and push escutcheon over sprinkler body; do not over/under-tighten for adjustment.

Care & Maintenance

Handling and Storage

Handle carefully, avoid extreme temperatures, store in dry, cool location.

Sprinkler Alterations and Replacements

Do not paint, coat, plate, or alter sprinklers; replace damaged units with identical models.

Maintenance Responsibilities

Owner responsible for fire protection devices; adhere to NFPA 25 and local regulations.

Ordering Information

Order Specification

Indicate full product name, quantity, model, style, orifice size, temperature, finish, and escutcheon finish.

Availability and Service

Products available globally through distribution centers; contact for nearest distributor.

The Central GB & GB-QR Dry Sidewall Automatic Sprinkler is designed for installation in areas subject to freezing, while still being supplied from a wet pipe sprinkler system. These sprinklers are available in both standard response (5mm glass bulb) and quick response (3mm glass bulb versions.

Function Description:

The sprinkler's operating mechanism utilizes a heat-sensitive glass bulb capsule containing a liquid. Upon exposure to heat, this liquid expands. When the rated temperature is reached, the frangible capsule ruptures, releasing the orifice seal. Water then discharges in a pre-designed spray pattern to control or extinguish a fire.

Important Technical Specifications:

Model: GB and GB-QR Dry Sidewall
Style:
- GB: Flush or Extended Only
- GB-QR: Flush, Recessed, Extended
Escutcheon: Recessed or Extended
Wrench:
- Offset (flush & extended) Part #1068
- Universal (recessed sidewall) Part #1069
Orifice Size: 1/2" (12.7 mm)
K-Factor: Varies based on length (refer to K-Factor Table on Page 2 of the manual).
Thread Size: 1" (25 mm) N.P.T.
Temperature Ratings & Bulb Colors:
- 135°F/57°C: Orange
- 155°F/68°C: Red
- 175°F/79°C: Yellow
- 200°F/93°C: Green
- *286°F/141°C: Blue (Standard Response Only)
- *360°F/182°C: Purple (Standard Response Only)
Approval: U.L., U.L.C.
Maximum Working Pressure: 175 psi (12.1 bar)
Factory Hydro Test: 100% at 500 psi (34.5 bar)
Standard Finishes: Brass, Chrome Plated, White
Escutcheon Finishes: Brass, Chrome Plated, and White Painted
Corrosion-Resistant Coatings (U.L. Only): White and Black Painted
Highest Allowable Ambient Storage Temperature: 100°F/38°C

Usage Features:

Adjustment: The extended version features a built-in 3" (76.2 mm) of adjustment, allowing for installation with common lengths and compensation for field variations. The extended version also has a maximum adjustment of ±1½" (38.1 mm).
Spacing: The Model GB and GB-QR Dry Horizontal Sidewall are allowed with NFPA 13 spacings for sidewall sprinklers in both light and ordinary hazard occupancies, offering a greater throw distance compared to the alternative 45° angle method suggested in NFPA 13 for dry sidewall sprinklers.
Escutcheon Options: The GB Dry Sidewall is available flush or extended, while the GB-QR dry sidewall is available recessed, flush, or extended. Both versions can be equipped with a special slatted wall escutcheon, designed to compensate for the angle of siding on the exterior wall.
Installation Ease: A larger wrench boss facilitates installation into the branchline tee using a sprinkler wrench, making installation easier in "hard" walls where the barrel of a dry sidewall would otherwise be inaccessible.
Installation Requirements:
- Must be installed according to current NFPA 13 Standards and local government provisions, codes, and standards.
- Must be installed into a threaded, cast iron, ductile iron, or malleable iron tee only (not into an elbow or mechanical tee).
- Only non-hardening pipe joint compound or Teflon tape should be used on male threads.
- Hand tighten the dry sidewall assembly into the fitting, then use the appropriate Central Sprinkler dry pendent wrench. A leak-tight joint requires 7 to 14 ft. lbs. (9.5 to 19.0 Nm) of torque.
- Sprinklers should be installed after the piping is in place to avoid mechanical damage.
- For CPVC systems, appropriate adaptation must be made to ensure installation into a threaded, cast iron, ductile iron, or malleable iron tee only. Sprinklers must be installed after the manufacturer's recommended setting time for primer and cement.
- For copper systems, sprinklers must be installed only after the inside of the sprinkler drop and associated fittings have been wire brushed to remove any flux, as residual flux can cause corrosion.

Maintenance Features:

Handling and Storage: Sprinklers must be handled carefully and stored in a dry, cool location (not exceeding 100°F/38°C) in their original shipping package.
Damage: Do not install sprinklers that have been dropped or visibly damaged (e.g., cracked glass bulb, loss of liquid).
Alterations: Sprinklers should never be painted, coated, plated, or altered in any way from their manufactured condition, as this may impair proper function. Altered sprinklers must be replaced.
System Integrity: Nothing should be hung or attached to the sprinkler unit that could disrupt the spray pattern. Obstructions must be removed. If construction alters the original configuration, additional sprinklers may be required.
Replacement: Do not attempt to reassemble or reuse an operated sprinkler. Replace any sprinkler exhibiting corrosion or damage with new sprinklers of the same orifice, style, and temperature rating. Sprinklers should not be replaced without first removing the fire protection system from service, securing permission from authorities, and notifying affected personnel. A fire watch is recommended during maintenance.
Post-Activation: A fire protection system shut off after activation should be repaired and returned to service immediately. The entire system should be inspected for damage, and non-operated sprinklers subjected to corrosive elements or excessive temperatures should be inspected and replaced if necessary.
Regular Inspections: The owner is responsible for the proper operating condition of all fire protection devices. NFPA standard 25 provides guidelines for inspection, testing, and maintenance. Local Authorities Having Jurisdiction may have additional regulations. Regular inspections by a qualified inspection service are advisable.