00 21 13 (00200) - Instructions to Bidders

This Master Specification Section contains:

.1  This Cover Page

.2  Master Specification Section Text:

1.  General

1.1  References

1.2  Related Requirements

1.3  System

1.4  Submittals

1.5  Quality Assurance

1.6  Deliver, Storage, Handling

2.  Products

2.1  Components

3.  Execution

3.1  Installation

3.2  Testing and Adjustments

3.3  Warranty

1  General

1.1  References

.1  CAN/CSA C22.1-12 - Canadian Electrical Code.

.2  CAN/CSA CS-03-04 - Telecommunication Apparatus Compliance Specification

.3  IEC 608449 – Sound Systems for Emergency Purposes

1.2  Related Requirements

.1  Electrical General Requirements: Section260010

.2  Data Communications Section 27 20 00

.3  Voice Communications Section 27 30 00

1.3  systems

.1  This section includes a public address system with multi point microphone input facilities and provisions for background music.

.2  Provide a paging system throughout the facility with the ability to integrate with the [VOIP][analog] based facility communications system.

.3  [The paging system contractor shall be a sub-contractor to Division 26 – Electrical.]

.4  All paging and public address system wiring shall be installed in conduit and cable tray.

.5  The paging system shall be supplied and installed by a firm that has provided and installed paging system components for a minimum of 5 years.

.6  The system to be installed [in all corridors, washrooms, gymnasiums, and other common areas in the building] [as indicated on the drawings].

.7  Intelligibility and clarity of human speech reproduced by the installed voice paging system must meet the approval of the Minister. Satisfactory intelligibility requires adequate audibility and adequate clarity in all areas of installation. Clarity is defined as freedom from distortion of all kinds (IEC 60849, Sound systems for emergency purposes, Section 3.6).

1.4  submittals

.1  Provide submittals in accordance with [Section 01 33 00 – Submittal Procedures].

.2  As-built Records and Drawings:

.1  Confirm format with the Minister prior to preparation of submittals.

.2  Provide electronic drawings in [AutoCAD 2009] format depicting all as built conditions.

.3  Provide two (2) sets of as-built records to the Minister.

.1  Provide one hard copy of as-built records for each telecommunications room in local plan holder. Include a floor plan showing the location of all equipment (patch panels and communications outlets, labeling of all equipment and room numbers).

1.5  quality assurance

.1  Health and Safety Requirements: Comply with construction occupational health and safety in accordance with Section [01 35 29 – Work Site Safety].

.2  Contractor to employ knowledgeable staff trained to install the paging system according to the standards stated in the references above and the manufacturer’s recommendations. The supervisor on site to be an RCDD or have industry confirmed equivalent knowledge and a minimum of five (5) years experience installing public address systems.

1.6  delivery, storage and handling

.1  Waste Management and Disposal: separate waste materials for reuse and recycling in accordance with Section [01 74 19 - Waste Management and Disposal].

.2  Stored and handle materials to ensure that their performance requirements are not affected by abrasions, dust or extreme temperatures.

.3  Follow manufacturer recommendations for handling and storage to ensure that their performance requirements are not affected by abrasions, dust or extreme temperatures.

.4  Do not bring paging system equipment to site until required for use and a suitable storage space has been identified.

2  Products

2.1  Components

.1  Microphones: Low impedance, handheld dynamic type with frequency response 100 to 7000 Hz. Size:65mm wide, 100mm high, 40mm deep. [Colour:communications grey]. Microphone supplied with 1.5m coiled cord complete with 90° cannon plug and On/Off switch.

.2  Mixer Preamplifier: Complete solid state providing [five (5)] input channels for microphones, high level or magnetic input as required. Separate speech filter incorporated in each channel. Unit complete with master gain control, power On/Off switch and VU meter. Technical specification as follows:

.1  Rated output: +28 dbm transformer isolated, 150/600 Ohm, balanced. Distortionless than 0.5% at +28 dbm, 20 to 20 000 Hz.

.2  Frequency response: 20 to 20 000 Hz + Idbm.

.3  Sensitivity: Microphone: 250 microvolts.

Magentic: 5 microvolts.

High Level: 4 millivolts.

Line: 400 millivolts.

Input attenuator set for maximum gain.

.4  Noise level: with master gain control up, 90 db below rated output. Inputs: 5 channels, each channel may be used for balanced low impedance microphone [150][250] Ohm nominal, mag. phono, line or high level 600to25000 Ohm.

.5  Load Impedance: 150 or 600 Ohm.

.6  Monitor Output: +10 dbm to 600 Ohm load. Rear panel monitor amplifier outputs 0.8 V to 10 000 Ohm or +10 dbm to 600 Ohm single ended.

.7  Controls and Indicators: 5 input level, 1 master, 1 base and 1 treble each 3 db per step to +15 db, 1 monitor, 1 output switch, 1 power switch, 1 VU range, 5 speech filter switches (10 db at 100 Hz), 5 input attenuator switches, illuminated VU meter.

.3  Dynamic Range Limiter: On the line side of the transformer matched mixer, install a combined compression amplifier with an instantaneous operating noise gate to reduce the "No Signal" noise by 15 db. Attack time of the compressor section shall be less than 30 microseconds with a release time of 1.5 seconds. Noise gate shall have a one microsecond attach time with a 200 millisecond release time. Unit shall be designed to operate from a 600 volt line at levels from 30 to +28 dbm. Unit to have a direct reading compression meter and up to 40 db of signal compression with 5:1 and 10:1 compression ratio.

.1  Unit technical specifications shall be as follows: Rated output+14 dbm. Maximum output+28 dbm. Distortion (THD)straight amplifier, 0.5%, with up to 40 db compression, 0.5%. Frequency response20 to 20 000 Hz + 1 db. Gain–600 Ohm at threshold of compression 51.5 + db. Bridging at threshold of compression 14 +2 db. Input impedancematching 600 Ohm. Bridging 10 000 Ohm. Output impedance600 Ohm. Noise threshold of compression70 db. Noise level Dynamic noise amplifier "On"80 db. Compression ratios10 to 1 and 5 to 1. Compression attack timeless than 30 microseconds. Compression release time1.5 seconds.

.2  Controlsinput level gain, output level gain, meter switch, power switch, compression disable, compression ratio, noise amplifier disable. Compression ratios10 to 1 and 5 to 1. Compression attack timeless than 30 microseconds. Compression release time1.5 seconds.

.4  Audio Power Amplifiers

.1  Totally solid state with silicone transistors used exclusively. Unit to incorporate temperature stabilized circuitry, electronic power limiting, output stage protection and shall meet the following technical specifications.

.2  The digital mixer/amplifier shall use digital signal processing for all mixing and signal processing functions and shall be modular for flexibility in system configuration. The mixer shall comply with the limits for a Class A computing device pursuant to FCC Part 15, Subject J. The mixer shall have a frequency response from 20 Hz to 20 kHz, 3 dB.

.3  The digital mixer/amplifier shall have the following characteristics:

.1  Minimum [60 watt] output. Confirm wattage required with speaker loading and provide adequately sized amplifier for each zone.

.2  [Six] mic/line inputs

.3  [Two] unbalanced auxiliary inputs

.4  Accessory module slot

.5  Transformer isolation input

.6  25V, 70V and 4 ohm speaker outputs

.7  Auto-mute priority function assignable via external switches

.8  Remote master volume control

.9  Individual master and channel volume controls

.10  Auxiliary output

.11  Remote AC turn-on

.12  Overcurrent and thermal protection circuitry

.13  Rack mount kit

.4  Amplifiers complete with two channel 24-bit mic/line modules, two channel 24-bit output modules, 8-in/8-out I/O control module, telephone access zone paging module, ambient noise controller module, ambient noise sensing microphone, remote panel, and single potentiometer remote panel.

.5  Telephone Paging Interface

.1  To allow selection and paging of any area or all areas from personnel user telephone.

.2  Decodes typical dual tone multi-frequencies (DTMF) for selection of area or areas for paging.

.3  Capacity to provide background music to areas not being paged.

.4  Capacity to allow emergency announcement override page in zone[s] being paged and background music in zones not being paged.

.5  Automatically starts page when it detects typical telephone ring signal.

.6  Automatically ends page when it detects absence of voice signal for specific length of time.

.7  Compatible power supply unit.

.8  Certified by Industry Canada to CS 03 for direct connection to telephone network.

.6  Loud Speakers

.1  Loudspeakers: Permanent magnetic cone type, nominal continuous wattage rating II watts, axial sensitivity with one watt input not less than 84.5 db at 3 m on axis.

.2  Permanent magnet Ceramic, mass of not less than 170 g. Voice coil not less than 25 mm in diameter. Frequency response 30 to 13 000 Hz, ±5 db.

.3  Loudspeaker Matching Transformers: Multi tap type 0.25 to 5 W 25 V line 70V line. Frequency response 100 to 10 000 Hz +1 db. Maximum insertion loss 1db. Output impedance.

.4  Finished Ceiling Areas: Recessed speakers located in T-bar ceiling suspension and drywall ceilings to be [127mm] [round][square] with integral baffle and 70V 5W transformer. Speakers to be supplied with an integral back-box and safety cable.

.5  Surface speakers located in open ceiling areas, corridors, work areas are to be 30W base-reflex with HIPS resin enclosure. integral multi-tap 70V transformer. Transformer taps to provide 5W, 10W, 15W, 20W and 30W outputs.

.6  Speakers mounted on the building exterior to be a weatherproof paging horn [installed in a vandal resistant cage]. Connect exterior speakers to a separate amplifier as indicated above.

.7  [Amplifier Rack]

.1  [Constructed of rigid metal frame with totally enclosing Code gauge metal panels, louvred for ventilation. Rack finished in colour selected by the Minister over corrosionresistant primer.]

.2  [Amplifier rack to incorporate ac strip kit assembly, fan kit assembly bottom mounted delivering not less than 140 L/s300 cfm through rack complete with thermostat and manual motor protection switch.]

3  Execution

3.1  installation

.1  Install paging and public address system equipment [as indicated on the drawings].

.2  All wiring shall be installed in [conduit] [or] [cable tray].

.3  System installer to adjust speaker transformer tap settings for intelligibility and clarity to suit the area in which the speakers are installed.

.4  Where loudspeaker enclosures are mounted in removable acoustic suspended ceiling tile systems, the backbox to be supported independent of ceiling tiles by means of two metal angle channels fastened to the speaker enclosure spanning in between supporting tee bar ceiling channels. Wood type support or wire hanging type support not to be used.

.5  All intercommunication cabling to terminate on punch down blocks located on the communication backboard.

3.2  Testing and Adjustments

.1  Conduct intelligibility test [with Minister}.

.2  Perform all tests in accordance with the manufacturer’s recommendations.

.3  Prior to f final inspection and acceptance of the paging system, all systems shall be thoroughly checked for proper operation and compliance with specified functions.

.4  The contractor shall submit a letter to the [Minister] stating that the testing has been performed and the results of the testing have been documented. Submit a completion of testing letter and complete testing documentation to the Minister. Include a copy of testing documentation in the Operation and Maintenance Manual.

3.3  Warranty

.1  The paging system shall be guaranteed for a period of one year from final acceptance. The guarantee shall include all system components and installation.

END OF SECTION