SECTION 16731

CLOCK SYSTEMS

PART	GENERAL

SECTION INCLUDES

Central clock and program system equipment.

Indicating clocks.

Recording clocks.

Program control relays.

RELATED SECTIONS

Section 16123 - Building Wire and Cable.

Section 16770 - Public Address System: Speaker wiring.

SYSTEM DESCRIPTION

Description: Time standard signal for indicating clocks, [time period audible and visual signals,] [and control functions for [interior] [and] [exterior lighting,] [heating, ventilating, and air conditioning systems,] [and] [________.]]

Configuration: [Synchronous wired.] [Minute-impulse.] [Carrier current.] [________.]

REFERENCES

NFPA 70 - National Electrical Code.

SUBMITTALS

Submit under provisions of Section [01300.] [_______.]

Shop Drawings: Indicate wiring diagrams and interconnection diagrams.

Product Data: Provide for each item of equipment; show specified ratings, colors, finishes, and physical dimensions.

Manufacturer's Installation Instructions: Indicate application conditions and limitations of use stipulated by product testing agency. Include instructions for storage, handling, protection, examination, preparation, installation, and starting of product.

OPERATION AND MAINTENANCE DATA

Submit under provisions of Section [01700.] [_______.]

Operation Data: Operating instructions.

Maintenance Data: Maintenance and repair instructions.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the products specified in this section with minimum [three] [_________] years [documented] experience[, and with service facilities within [100] [____] miles of Project].

Supplier: [Authorized] [Franchised] distributor of specified manufacturer with minimum [three] [_________] years [documented] experience.

REGULATORY REQUIREMENTS

Conform to requirements of NFPA 70.

Furnish products listed and classified by [UL] [testing firm acceptable to authority having jurisdiction] as suitable for purpose specified and indicated.

ENVIRONMENTAL REQUIREMENTS

Do not install products until building is enclosed.

Maintain conditions to manufacturer's instructions during and after installation of clock system.

MAINTENANCE SERVICE

Furnish service and maintenance of clock system for [one year] [______] from Date of Substantial Completion.

PART	PRODUCTS

MASTER CLOCK UNIT

Manufacturer and Model:

[_________________________________] Model [________.]

[_________________________________] Model [________.]

[_________________________________] Model [________.]

Description: [Programmable] master clock for maintaining standard time and transmitting time, correcting, and program control signals.

Front Panel Time Display: Digital.

Battery Powered Standby: [24] [____] hours.

Timing Reference: [60 Hz. line frequency,] [Temperature-compensated crystal oscillator,] accurate to within [3] [____] seconds per month.

Correction Schedule: Once per [hour] [________.]

Selectable Program Schedules: [6.] [____.]

Program Cycle: [Seven day, 24 hour, with automatic holiday operation.] [________.]

Program Event Duration: [________] seconds.

Program Memory: Nonvolatile.

System Indicating Clock Capacity: [________] units.

System [Control Relay] [Output] Capacity: [________] circuits, rated [10] [___] amperes each; provide manual override for each.

Enclosure: [Surface.] [Recessed.]

Finish: [________.]

ANALOG INDICATING CLOCKS

Manufacturer and Model:

[_________________________________] Model [________.]

[_________________________________] Model [________.]

[_________________________________] Model [________.]

Description: [[Round] [Square] analog indicating clock, synchronous motor type.]

Finish and Color: [Black] [________] color [hands] on [white] [________] color [face] [background], [stainless steel] [steel] [plastic] housing [with [gray] [________] color [enamel] finish], [flush] [semi-flush] [surface] type. [Provide double-face units where indicated.]

Voltage: 120 volts, 60 Hz.

Size: [9] [12] [____] inch ([250] [300] [____] mm).

Combination Housing: Provide cutouts to accommodate the following additional devices:

[8] [____] inch ([200] [____] mm) speaker and matching transformer. Provide speaker grille.

Volume control pad.

Light switch.

Intercom call switch.

Thermostat.

Backbox: Include integral receptacle.

DIGITAL INDICATING CLOCKS

Manufacturer and Model:

[_________________________________] Model [________.]

[_________________________________] Model [________.]

[_________________________________] Model [________.]

Description: Digital clock with illuminated [liquid crystal] [light-emitting diode] display.

Finish and Color: [Red] [________] color [digits] on [black] [________] color [background], [steel] [plastic] [________] housing [with [gray] [________] color [enamel] finish], [flush] [surface] [semi-flush] type.

Voltage: 120 volts, 60 Hz.

Size: [2-1/2] [4] [____] inch ([65] [100] [____] mm).

Combination Housing: Provide cutouts to accommodate the following additional devices:

[8] [____] inch ([200] [____] mm) speaker and matching transformer. Provide speaker grille.

Volume control pad.

Light switch.

Intercom call switch.

Thermostat.

Backbox: Include integral receptacle.

INDOOR BELLS

Manufacturer and Model:

[_________________________________] Model [________.]

[_________________________________] Model [________.]

[_________________________________] Model [________.]

Description: Electric [vibrating] [single stroke] bell with operating mechanism behind dome.

Size: [8] [10] [____] inch ([200] [250] [____] mm).

Sound Rating: [81] [____] dB at 10 feet (3 M).

Accessories:

Guard: [________.]

[____]: [________.]

OUTDOOR BELLS

Manufacturer and Model:

[_________________________________] Model [________.]

[_________________________________] Model [________.]

[_________________________________] Model [________.]

Description: Electric vibrating bell in weatherproof enclosure.

Size: [8] [10] [____] inch ([200] [250] [____] mm).

Sound Rating: [81] [____] dB at 10 feet (3 M).

Accessories:

Guard: [________.]

[____]: [________.]

HORN

Manufacturer and Model:

[_________________________________] Model [________.]

[_________________________________] Model [________.]

[_________________________________] Model [________.]

Horn: [Surface] [Flush] [Projector] type horn.

Sound Rating: [87] [____] dB at 10 feet (3M).

BUZZERS

Manufacturer and Model:

[_________________________________] Model [________.]

[_________________________________] Model [________.]

[_________________________________] Model [________.]

Buzzer: [________.]

SIGNAL GENERATOR UNIT

Manufacturer and Model:

[_________________________________] Model [________.]

[_________________________________] Model [________.]

[_________________________________] Model [________.]

Description: Electronic carrier current signal generator.

PART	EXECUTION

INSTALLATION

Install in accordance with manufacturer's instructions.

Install devices furnished under other sections into combination housings.

FIELD QUALITY CONTROL

Field [inspection and] testing will be performed under provisions of Section [01400.] [________.]

Inspect system to assure proper operation.

MANUFACTURER'S FIELD SERVICES

Prepare and start systems under provisions of Section [01400.] [______.]

ADJUSTING

Adjust program functions to meet Owner's revised schedule. Revisit site upon Owner's request within one year of Substantial Completion and make additional adjustments to program schedule as directed.

DEMONSTRATION

Provide systems demonstration under provisions of Section [01650.] [______.]

END OF SECTION