SECTION 16760

INTERCOM SYSTEMS

PART 1 GENERAL

SECTION INCLUDES

Intercom equipment.

Intercom cable.

Accessories.

RELATED SECTIONS

Section 16120 - Wire and Cable.

SUBMITTALS

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

Shop Drawings: Indicate cable routing and connections.

Submit product data for each item of equipment.

Submit manufacturer's installation instructions.

PROJECT RECORD DOCUMENTS

Submit record documents under provisions of Section [01700.] [_____.]

Accurately record actual locations of devices and wiring.

OPERATION AND MAINTENANCE DATA

Submit under provisions of Section [01700.] [01730.]

Operation Data: Include instructions for routine operation of master and remote stations.

Maintenance Data: Include instructions for minor troubleshooting, preventive maintenance, and cleaning.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the products specified in this Section with minimum [three] [_____] years [documented] experience.

Supplier: Company [[authorized] [franchised] by manufacturer and] specializing in supplying products specified in this Section with minimum [three] [_____] years [documented] experience.

Installer: Company specializing in installing the products specified in this Section with minimum [three] [_____] years [documented] experience.

MAINTENANCE SERVICE

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

PART 2 PRODUCTS

INTERCOM SYSTEM

Description: [Private] voice communication between locations indicated on Drawings.

Configuration: [Direct-connected, keyed] [single conversation path, central control] [multiple conversation path, central control] [automatic dial selector] intercom system.

System Capacity: [One] [_____] master station; [one] [_____] speaker/microphone station.

Conversation Paths: [Two.] [_____.]

System Capacity: [Four] [_____] lines, [two] [_____] trunks.

Sequence of Operation: Master selects any other master, [any speaker/microphone station,] all other masters [and speaker/microphone stations], [and] [zones of masters [and speaker/microphone stations], [zoned by [__________] [groups of [two] simultaneously.] Incoming calls from remote station are annunciated by light and momentary audible signal.

****** [OR] ******

Sequence of Operation: Master selects any or all remote stations by entering [one] [two] [three] digit number associated with that station or all call. Only the selected station can communicate.

****** [OR] ******

Sequence of Operation: Master selects any or all remote stations by entering [one] [two] [three] digit number associated with that station or all call. Speaker/microphone station selects any master station by entering [one] [two] [three] digit number associated with that station.

****** [OR] ******

Sequence of Operation: Any station calls any other station by dialing the [one] [two] [three] [_____] digit number associated with that station.

Interconnection with Public Telephone System: Dial [one] [_____] digit number associated with outgoing line for interconnection [with no restriction.] [with local calls only allowed.]

MANUFACTURERS

[______________________________] Product [__________.]

[______________________________] Product [__________.]

[______________________________] Product [__________.]

Substitutions: Under provisions of Section [01600.] [_____.]

DIRECT CONNECTED, KEYED MASTER INTERCOM STATION

Description: [Desk] [Surface wall] [Recessed wall] [Console]-mounted master intercom unit.

Nominal Size: [________________________________________.]

Intercom Amplifier: [2] [_____] watts rated output with less than 5 percent total harmonic distortion, frequency response of 100 to 10,000 Hz plus or minus 3 dB, and minimum 60 dB signal-to-noise ratio at rated output.

All-Call Amplifier: [1] [_____] watt rated output for each connected station, with less than 5 percent total harmonic distortion, frequency response of 100 to 10,000 Hz plus or minus 3 dB, and minimum 60 dB signal-to-noise ratio at rated output.

Speaker Sensitivity: [92] [_____] dB.

Input Sensitivity: Provide adequate input sensitivity to deliver rated amplifier output when no more than 10 dynes per square centimeter impinge on speaker/microphone.

Handset: Standard molded plastic telephone handset with [5] [_____] ft ([1.5] [_____] M) long permanently coiled cord.

Minimum Controls and Indicators:

POWER ON-OFF selector switch and indicator lamp.

Selector switch for each [master,] remote station, all call, and each zone call.

Lighted annunciator lamp for each [master and] speaker/microphone station.

Audible signal for incoming calls.

CALLED STATION BUSY indicator lamp.

Speaker disconnect by lifting handset.

VOLUME control for listen volume level only.

PRIVACY switch.

TALK/LISTEN switch.

Mark each control and indicator with legible and permanent [_____] nameplates.

Sequence of Operation:

Remote selector switches connect master directly to remote stations.

[Manual momentary switch [with sustained TALK position]] [Voice-actuated electronic switch] sets TALK/LISTEN mode.

Incoming calls [actuate annunciator lamp [and momentary buzzer]] [and] [are amplified without master selection of calling station.]

Privacy switch turns off microphone.

CENTRAL CONTROL MASTER INTERCOM STATION

Description: [Desk] [Surface wall] [Recessed wall] [Console]-mounted master intercom unit.

Nominal Size: [________________________________________.]

Speaker Sensitivity: [92] [_____] dB.

Handset: Standard molded plastic telephone handset with [5] [_____] ft ([1.5] [_____] M) long permanently coiled cord.

Minimum Controls and Indicators:

POWER ON-OFF selector switch and indicator lamp.

Ten digit, silent operating touch key pad.

Lighted annunciator lamp for each [master and] speaker/microphone station.

Audible signal for incoming calls.

CALLED STATION BUSY indicator lamp.

SYSTEM BUSY indicator lamp.

Speaker disconnect by lifting handset.

VOLUME control for listen volume level only.

PRIVACY switch.

Mark each control and indicator with legible and permanent [_____] nameplates.

INTERCOM CONTROL UNIT

Description: [Surface wall] [Recessed wall] [Console]-mounted intercom control unit.

Nominal Size: [________________________________________.]

Construction: [________________________________.]

Finish: [______________________________________.]

Intercom Amplifier: [2] [_____] watts rated output with less than 5 percent total harmonic distortion, frequency response of 100 to 10,000 Hz plus or minus 3 dB, and minimum 60 db signal-to-noise ratio at rated output.

All-Call Amplifier: [1] [_____] watts rated output for each connected station, with less than 5 percent total harmonic distortion, frequency response of 100 to 10,000 Hz plus or minus 3 dB, and minimum 60 dB signal-to-noise ratio at rated output.

Input Sensitivity: Provide adequate input sensitivity to deliver rated amplifier output when no more than 10 dynes per square centimeter impinge on speaker/microphone.

Sequence of Operation:

Intercom Control Unit connects calling station to remote stations.

[Manual momentary switch [with sustained TALK position]] [Voice-actuated electronic switch] sets TALK/LISTEN mode.

Incoming calls [actuate annunciator lamp [and momentary buzzer]] [and] [are amplified] at called station.

Privacy switch turns off microphone.

SPEAKER/MICROPHONE INTERCOM UNITS

Description: [Desk] [Surface wall] [Flush, recessed wall]-mounted unit.

Nominal Size: [________________________________________.]

Construction: [________________________________.]

Finish: [______________________________________.]

Sensitivity: 92 dB at one W input, four ft (3.3 M) on axis of speaker.

Handset: Standard molded plastic telephone handset with [5] [_____] ft ([1.5] [_____] M) permanently coiled cord.

Controls and Indicators:

POWER ON-OFF selector switch and indicator lamp.

[Call in switch for [one] [_____] master station.] [Ten digit, silent operating key pad.]

Lighted annunciator lamp for incoming call.

Recurring audible signal for incoming call.

CALLED STATION BUSY indicator lamp.

Speaker disconnect by lifting handset.

VOLUME control for listen volume level only.

PRIVACY switch.

TALK/LISTEN switch.

Mark each control and indicator with legible and permanent [_____] nameplates.

Sequence of Operation:

Master selector switches connect unit directly to master stations.

[Manual momentary switch [with sustained TALK position]] [Voice-actuated electronic switch] [master station]

sets TALK/LISTEN mode.

Incoming calls [actuate annunciator lamp [and momentary buzzer]][.] [and] [are amplified.]

Privacy switch turns off microphone.

ACCESSORIES

[_____]: [__________], [Model [________________] manufactured by [____________________].]

PART 3 EXECUTION

EXAMINATION

Verify that surfaces are ready to receive work.

Verify field measurements are as [shown on Drawings.] [instructed by manufacturer.]

Verify that required utilities are available, in proper location, and ready for use.

Beginning of installation means installer accepts conditions.

INSTALLATION

Install in accordance with manufacturer's instructions.

FIELD QUALITY CONTROL

Field [inspection and] testing will be performed under provisions of Section [01400.] [01410.]

Perform operational test on completed installation to verify proper operation.

Replace equipment, components, and wiring to eliminate audible noise, clicks, pops, or hum when system is in standby or operation.

MANUFACTURER'S FIELD SERVICES

Prepare and start systems under provisions of Section [01600.] [01650.]

Make final connections to units.

Perform field inspection and testing.

Demonstrate system operation.

ADJUSTING

Adjust work under provisions of Section [01650] [_____.]

Adjust controls and configuration switches for operation

as indicated.

DEMONSTRATION

Provide systems demonstration and instructions under provisions of Section [01650.] [_____.] Allow minimum of [_____] hours.

[Employ manufacturer's field representative to] demonstrate system operation to designated Owner personnel.

Conduct walking tour of Project and briefly describe function, operation, and maintenance of each component.

Use submitted operation and maintenance manual as reference during demonstration and training.

END OF SECTION