CENTRAL ROC - User Manual

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used to mark the center of the ceiling

hole into plaster board, ceiling tiles, etc.

by pushing the ceiling product against

the Cap. When the ceiling installation is

complete, the Cap is removed and the

Cover Plate Assembly installed.

Operation: When exposed to heat from

a fire, the Cover Plate, which is normally

soldered to the Support Cup at three

points, falls away to expose the

Sprinkler Assembly. At this point the

Deflector supported by the Arms drops

down to its operational position. The

fusible link of the Sprinkler Assembly is

comprised of two link halves which are

joined together by a thin layer of solder.

When the rated temperature is reached,

the solder melts and the two link halves

seperate, which then allows the

sprinkler to activate and flow water.

WARNING

The ROC Residential Pendent

Sprinklers described herein must be

installed and maintained in compli-

ance with this document, as well as

with the applicable standards of the

National Fire Protection Association,

in addition to the standards of any

other authorities having jurisdiction.

Failure to do so may impair the

integrity of these devices.

Because of the above cited stipula-

tions and the varied nature of

residential type architecture, there

will be some compartment designs

which cannot be fully sprinklered in

accordance with the recomendations

of NFPA 13, NFPA 13D, or

NFPA 13R. In the event of this

condition, consult the authorities

having jurisdiction for guidance and

approval.

The owner is responsible for main-

taining their fire protection system

and devices in proper operating

condition. The installing contractor

or sprinkler manufacturer should be

contacted relative to any questions.

Tyco Fire Products --- www.centralsprinkler.com

451 North Cannon Avenue, Lansdale, Pennsylvania 19446 --- USA

Customer Service/Sales: Tel: (215) 362-0700 / Fax: (215) 362-5385

Technical Services: Tel: (800) 381-9312 / Fax: (800) 791-5500

Model ROC

Residential Optima

Concealed

4.2 K-factor -

Fast Response Residential

Concealed Pendent Fusible Link Automatic Sprinkler

No. 4-5.0

General

Description

The Central ROC - Residential Optima

Concealed, 4.2 K-factor, Residential

Pendent Sprinklers are decorative

sprinklers featuring a flat cover plate

designed for use in residential occupan-

cies such as homes, apartments,

dormitories, and hotels.

They are to be used in wet pipe

residential sprinkler systems for one-

and two-family dwellings and mobile

homes per NFPA 13D; wet pipe

residential sprinkler systems for

residential occupancies up to and

including four stories in height per

NFPA 13R; or wet pipe sprinkler

systems for the residential portions of

any occupancy per NFPA 13.

The Cover Plate Assembly conceals the

sprinkler operating components above

the ceiling. The separable two-piece

design of the Cover Plate and Support

Cup Assemblies allows installation of

the sprinklers and pressure testing of

the fire protection system prior to

installation of a suspended ceiling or

application of the finish coating to a

fixed ceiling. They also permit removal

of suspended ceiling panels for access

to building service equipment without

having to first shut down the fire

protection system and remove sprin-

klers. Also, the separable two-piece

design of the the Sprinkler provides for

1/2 inch (12,7 mm) of vertical adjust-

ment, to reduce the accuracy to which

the length of fixed pipe drops to the

sprinklers must be cut.

The ROC Residential Pendent Sprin-

klers are shipped with a Disposable

Protective Caps. The Protective Cap is

temporarily removed to install the ROC,

and then replaced to protect the ROC

while the ceiling is being installed and

finished. The tip of the Cap can also be

CENTRAL

ROC 7-02

Residential

Concealed

Pendent

Sprinklers

SPRINKLERS FOR REPLACEMENT USE ONLY IN EXISTING SPRINKLER SYSTEMS

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Summary

General Description

Operation

Explains how the sprinkler activates when exposed to fire heat.

Warnings and Compliance

Mandates installation and maintenance compliance with standards to ensure device integrity.

Technical Data

Physical Characteristics

Details the materials and construction of the ROC Residential Optima Concealed Pendent Sprinklers.

Design Criteria

Installation Expertise Required

Emphasizes that residential sprinkler systems must be designed and installed by competent personnel.

Installation

Installation Notes and Precautions

Provides crucial advice on handling sprinklers to avoid damage during installation.

Care & Maintenance

Maintenance Procedures

Covers essential maintenance for wet pipe sprinkler systems and the sprinklers themselves.

The Central ROC Residential Optima Concealed Pendent Sprinkler is a decorative, fast-response automatic sprinkler designed for residential occupancies such as homes, apartments, dormitories, and hotels. It features a flat cover plate that conceals the sprinkler's operating components above the ceiling. These sprinklers are intended for use in wet pipe residential sprinkler systems in various applications, including one- and two-family dwellings and mobile homes (per NFPA 13D), residential occupancies up to and including four stories in height (per NFPA 13R), or residential portions of any occupancy (per NFPA 13).

Function Description:

The sprinkler operates when exposed to heat from a fire. The cover plate, normally soldered to the support cup at three points, falls away to expose the sprinkler assembly. The deflector then drops down to its operational position. The fusible link, composed of two link halves joined by a thin layer of solder, melts when the rated temperature is reached. This causes the link halves to separate, allowing the sprinkler to activate and flow water. The separable two-piece design of the Cover Plate and Support Cup Assemblies allows for installation and pressure testing of the fire protection system before a suspended ceiling is installed or a fixed ceiling is finished. This design also permits removal of suspended ceiling panels for access to building service equipment without shutting down the fire protection system or removing sprinklers. The two-piece design provides 1/2 inch (12.7 mm) of vertical adjustment, reducing the need for precise cutting of pipe drops.

Important Technical Specifications:

Sprinkler Identification Number (SIN): C2596
Approvals: UL & C-UL Listed, NYC Approved (MEA 7-95-E)
Maximum Working Pressure: 175 psi (12.1 bar)
Pipe Thread Connection: 1/2 inch NPT
Discharge Coefficient (K-factor): 4.2 GPM/psi^1/2 (60.5 LPM/bar^1/2)
Temperature Ratings: 160°F/71°C Sprinkler / 135°F/57°C Plate
Finishes:
- Sprinkler: Natural Brass
- Cover Plate: Chrome or Brass Plated; *Flat White, Bright White, or Custom Painted (*Standard Finish supplied when White is specified)
Physical Characteristics: The sprinkler utilizes a dezincification resistant (DZR) bronze frame and a monel thermal sensitive link. The frame orifice is sealed with a gasketed spring plate (Belleville Seal) made of a beryllium nickel disc spring with a Teflon™ gasket. The arms and deflector are bronze, and the support cup is steel. The cover plate and retainer assembly are brass.
Minimum Design Flow Rates (for NFPA 13D & NFPA 13R Occupancies):
- 12' x 12' (3.7 x 3.7m) coverage: Single Sprinkler 18 GPM (18.4 psi), Multiple Sprinklers 13 GPM (9.6 psi)
- 14' x 14' (4.3 x 4.3m) coverage: Single Sprinkler 18 GPM (18.4 psi), Multiple Sprinklers 13 GPM (9.6 psi)
- 16' x 16' (4.9 x 4.9m) coverage: Single Sprinkler 18 GPM (18.4 psi), Multiple Sprinklers 13 GPM (9.6 psi)
- 18' x 18' (5.5 x 5.5m) coverage: Single Sprinkler 24 GPM (32.7 psi), Multiple Sprinklers 17 GPM (16.4 psi)
- 20' x 20' (6.1 x 6.1m) coverage: Single Sprinkler 24 GPM (32.7 psi), Multiple Sprinklers 17 GPM (16.4 psi)
Minimum Spacing Between Sprinklers: 8' (2.4 m)
Maximum Ceiling to Top of Sprinkler Deflector Distance: 4 inches
Ceiling Slopes: Investigated for use under smooth flat horizontal ceilings with slopes up to 2 inches per foot.

Usage Features:

Installation: Sprinklers must be installed in the pendent position with the centerline perpendicular to the mounting surface. The Protective Cap, shipped with the sprinklers, should be removed for installation and then replaced to protect the ROC during ceiling installation and finishing. The tip of the cap can also be used to mark the center of the ceiling hole. The ROC Wrench (Figure 1) is used for installation and tightening, accepting a 1/2 inch ratchet drive. After ceiling completion, the Protective Cap is discarded, and the Cover Plate/Retainer Assembly is screwed on until its flange contacts the ceiling without lifting the ceiling panel.
Concealed Design: The flat cover plate provides an aesthetic solution, blending with the ceiling.
Adjustability: The 1/2 inch (12.7 mm) vertical adjustment simplifies installation by reducing the need for precise pipe drop lengths.
Residential Applications: Specifically designed and listed for residential fire protection service, ensuring appropriate coverage and flow rates for residential environments.
Design Criteria: Installation must comply with NFPA 13, 13D, or 13R standards and local authorities. Specific guidance is provided for sloped and coffered ceilings, as well as obstruction criteria.
Protective Cap: The disposable protective cap prevents damage to the deflector and arms during ceiling installation and finishing. It also helps locate the center of the clearance hole.

Maintenance Features:

General Maintenance: Systems must be maintained and serviced in accordance with NFPA 25.
Temperature: Wet pipe systems must be maintained at a minimum of 40°F/4°C to prevent freezing. Sprinklers should not be stored where temperatures exceed 100°F/38°C.
Damage Prevention: Avoid dropping, striking, or twisting sprinklers. Damaged sprinklers must be replaced. Handle sprinklers by the frame arms only to avoid damaging the fusible link assembly.
Repainting: Factory painted cover plates must NOT be repainted; they should be replaced if necessary. If the ceiling is repainted, care must be taken not to seal off the 3/32 inch (2.4 mm) air gap between the cover plate lip and the ceiling, which is necessary for proper operation.
Cleaning: Do not use soap, water, detergents, ammonia, or other chemicals. Clean with a feather duster or soft-bristle vacuum attachment to remove dust, lint, cobwebs, and insects.
Replacements: Only replace with pendent sprinklers listed for residential fire protection service with the same nominal K-factor, coverage area, and equal or lower flow ratings.
System Integrity: Ensure sprinklers are firmly fastened to the piping to prevent altered orientation and water distribution patterns during operation. The sprinkler escutcheon cannot be used to hold the sprinkler in position.
Obstructions: Do not enclose sprinklers within drapes, curtains, or valances, or hang anything from them.
System Shutdown: Obtain permission from authorities and notify affected personnel before closing a fire protection system main control valve for maintenance.
Inspections: Automatic sprinkler systems should be inspected, tested, and maintained by a qualified Inspection Service.
Leakage/Corrosion: Sprinklers showing visible signs of corrosion or leakage must be replaced.
Modifications: Sprinklers must never be painted, plated, coated, or otherwise altered after leaving the factory. Modified or overheated sprinklers must be replaced.
System Status: The system is considered "Out of Service" as long as the Protective Cap remains in place.

CENTRAL ROC Specifications