ATTACHMENT 4 SPECS SAT FJRP052994 ADF FJRP199040 Volume 4 of 4.pdf
PDF 1 MB Posted
- Solicitation number
- W50S87-21-B-5005
About this file
This solicitation is for a 145 Airlift Wing Add/Alter Small Air Terminal Building 5 project. Key details include constructing a new small air terminal building and associated site work at the North Carolina Army National Guard. A pre-bid conference will be held on June 2, 2021 for interested bidders to attend. Sealed bids are due by June 16, 2021 and will be publicly opened on that date. The awarded contract is expected to be completed within 365 calendar days of the notice to proceed. The estimated cost range for the project is between $5-10 million. The North Carolina Army National Guard is the contracting agency overseeing this project.
View the file
Other files
Show all 36
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
SECTION 237423.13 - PACKAGED, DIRECT-FIRED, HEATING-ONLY MAKEUP-AIR UNITS
PART 1 - GENERAL
1.1 SUMMARY
A. Section includes direct-fired heating and ventilating units.
1.2 DEFINITIONS
A. DDC: Direct digital control.
1.3 ACTION SUBMITTALS
A. Product Data: For each type and configuration of outdoor, direct-fired heating and ventilating unit.
1. Include rated capacities, operating characteristics, electrical characteristics, and furnished specialties and accessories.
1.4 INFORMATIONAL SUBMITTALS
A. Startup service reports.
1.5 CLOSEOUT SUBMITTALS
A. Operation and Maintenance Data: For direct-fired heating and ventilating units to include in emergency, operation, and maintenance manuals.
1.6 MAINTENANCE MATERIAL SUBMITTALS
A. Furnish extra materials that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.
1. Filters: One set(s) for each unit.
2. Fan Belts: One set(s) for each unit.
Addendum #1 Issued March 3, 2021
PACKAGED, DIRECT-FIRED, HEATING-ONLY MAKEUP-AIR UNITS
237423.13 - 1
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
FJRP052994 SMALL AIR TERMINAL
FJRP199040 AIR DROP FACILITY
1.7 QUALITY ASSURANCE
A. Comply with NFPA 70.
B. ASHRAE Compliance: Applicable requirements in ASHRAE 62.1, Section 5 - "Systems and Equipment" and Section 7 - "Construction and Startup."
C. ASHRAE/IES 90.1 Compliance: Applicable requirements in ASHRAE/IES 90.1, Section 6 - "Heating, Ventilating, and Air-Conditioning."
1.8 WARRANTY
A. Special Warranty: Manufacturer agrees to repair or replace components of direct-fired heating and ventilating units that fail in materials or workmanship within specified warranty period.
1. Warranty Period for Heat Exchangers: Manufacturer's standard, but not less than five years from date of Substantial Completion.
PART 2 - PRODUCTS
2.1 SYSTEM DESCRIPTION
A. Factory-assembled, prewired, self-contained unit consisting of cabinet, supply fan, controls, filters, and direct-fired gas burner to be installed exterior to the building.
B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.
2.2 UNIT CASINGS
A. General Fabrication Requirements for Casings:
1. Forming: Form walls, roofs, and floors with at least two breaks at each joint.
2. Casing Joints: Sheet metal screws or pop rivets, factory sealed with water-resistant sealant.
3. Casing Coating: Zinc .
4. Air-Handling-Unit Mounting Frame: Formed galvanized-steel channel or structural channel supports, designed for low deflection, welded with integral lifting lugs.
5. Airstream Surfaces: Surfaces in contact with the airstream shall comply with requirements in ASHRAE 62.1.
Addendum #1 Issued March 3, 2021
PACKAGED, DIRECT-FIRED, HEATING-ONLY MAKEUP-AIR UNITS
237423.13 - 2
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
B. Configuration: Horizontal unit with horizontal discharge for structural support installation.
C. Cabinet: Aluminized- or galvanized-steel panels, formed to ensure rigidity and supported by galvanized-steel channels or structural channel supports with lifting lugs. Duct flanges at inlet and outlet. Pitched roof panels and knockouts with grommet seals for electrical and piping connections and lifting lugs.
D. Outer Casing: 0.0359-inch- thick steel with enamel-painted.
E. Inner Casing:
1. Burner Section Inner Casing: 0.0299-inch- thick steel.
2. Double-wall casing with inner wall of perforated steel, for the following sections:
a. Access Panels: Lift out for burner and fan motor assemblies on both sides of unit.
3. Internal Insulation: Fibrous-glass duct lining, neoprene coated, comply with ASTM C 1071, Type II, applied on complete unit.
a. Thickness: 1 inch.
b. Insulation Adhesive: Comply with ASTM C 916, Type I.
c. Density: 2.0 lb/cu. ft..
d. Mechanical Fasteners: Galvanized steel suitable for adhesive, mechanical, or welding attachment to casing without damaging liner when applied as recommended by manufacturer and without causing air leakage.
F. Casing Insulation and Adhesive:
1. Materials: ASTM C 1071, Type II.
2. Location and Application: Factory applied with adhesive and mechanical fasteners to the internal surface of section panels downstream from, and including, the heating-coil section.
a. Liner Adhesive: Comply with ASTM C 916, Type I.
b. Mechanical Fasteners: Galvanized steel, suitable for adhesive, mechanical, or welding attachment to duct without damaging liner when applied as recommended by manufacturer and without causing leakage in cabinet.
c. Liner materials applied in this location shall have airstream surface coated with a temperature-resistant coating or faced with a plain or coated fibrous mat or fabric, depending on service-air velocity.
3. Location and Application: Encased between outside and inside casing.
G. Inspection and Access Panels and Access Doors:
Addendum #1 Issued March 3, 2021
PACKAGED, DIRECT-FIRED, HEATING-ONLY MAKEUP-AIR UNITS
237423.13 - 3
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
1. Panel and Door Fabrication: Formed and reinforced, single- or double-wall and insulated panels of same materials and thicknesses as casing.
2. Inspection and Access Panels:
a. Gasket: Neoprene, applied around entire perimeters of panel frames.
b. Size: Large enough to allow inspection and maintenance of air-handling unit's internal components.
2.3 SUPPLY-AIR FAN
A. Drive: V-belt drive with matching fan pulley and adjustable motor sheaves and belt assembly.
B. Mounting: Fan wheel, motor, and drives shall be mounted in fan casing with spring isolators.
C. Fan-Shaft Lubrication Lines: Extended to a location outside the casing.
2.4 AIR FILTERS
A. Comply with NFPA 90A.
B. Cleanable Panel Filters: Factory-fabricated, flat-panel-type, cleanable air filters with holding frames, with a MERV 6 according to ASHRAE 52.2.
1. Thickness: 1 inches.
2. Media: Metal mesh.
3. Frame: Galvanized steel.
2.5 DAMPERS
A. Outdoor-Air Damper: Galvanized-steel, opposed-blade dampers with vinyl blade seals and stainless-steel jamb seals, having a maximum leakage of 10 cfm/sq. ft. of damper area, at a differential pressure of 2-inch wg.
B. Damper Operator: Direct coupled, electronic with spring return or fully modulating as required by the control sequence.
2.6 DIRECT-FIRED GAS BURNER
A. Description: Factory assembled, piped, and wired; and complying with ANSI Z21.47, "Gas-Fired Central Furnaces," and with NFPA 54, "National Fuel Gas Code."
1. CSA Approval: Designed and certified by and bearing label of CSA.
Addendum #1 Issued March 3, 2021
PACKAGED, DIRECT-FIRED, HEATING-ONLY MAKEUP-AIR UNITS
237423.13 - 4
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
B. Safety Controls:
1. Control Transformer: 24-V ac.
2. High Limit: Thermal switch or fuse to stop burner.
3. Gas Train: Regulated, redundant, 24-V ac gas valve assembly containing pilot solenoid valve, electronic-modulating temperature control valve, pilot filter, pressure regulator, pilot shutoff, and manual shutoff all in one body.
4. Purge-period timer shall automatically delay burner ignition and bypass low-limit control.
5. Gas Manifold: Safety switches and controls complying with ANSI standards FM Global.
6. Airflow Proving Switch: Differential pressure switch senses correct airflow before energizing pilot.
7. Automatic-Reset, High-Limit Control Device: Stops burner and closes main gas valve if high-limit temperature is exceeded.
8. Safety Lockout Switch: Locks out ignition sequence if burner fails to light after three tries. Controls are reset manually by turning the unit off and on.
2.7 UNIT CONTROL PANEL
A. Factory-wired, fuse-protected control transformer, connection for power supply and field-wired unit to remote control panel.
B. Control Panel: Surface-mounted remote panel, with engraved plastic cover and the following lights and switches:
1. On-off fan switch.
2. Heat-vent-off switch.
3. Supply-fan operation indicating light.
4. Heating operation indicating light.
5. Thermostat.
6. Damper position potentiometer.
7. Dirty-filter indicating light operated by unit-mounted differential pressure switch.
8. Safety-lockout indicating light.
9. Enclosure: NEMA 250, Type 1.
2.8 CONTROLS
A. Comply with requirements in Section 230923 "Direct Digital Control (DDC) System for
HVAC".
B. Interface with DDC System for HVAC: Factory-installed hardware and software to enable the DDC system for HVAC to monitor, control, and display status and alarms of heating and ventilating unit.
Addendum #1 Issued March 3, 2021
PACKAGED, DIRECT-FIRED, HEATING-ONLY MAKEUP-AIR UNITS
237423.13 - 5
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
1. ASHRAE 135.1 (BACnet) communication interface with the DDC system for HVAC shall enable the DDC system for HVAC operator to remotely control and monitor the heating and ventilating unit from an operator workstation. Control features and monitoring points displayed locally at heating and ventilating unit control panel shall be available through the DDC system for HVAC.
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine areas and conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of the Work.
B. Verify cleanliness of airflow path to include inner-casing surfaces, filters, coils, turning vanes, fan wheels, and other components.
C. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 INSTALLATION
A. Equipment Mounting:
1. Comply with requirements for vibration isolation devices specified in Section 230548.13 "Vibration Controls for HVAC."
B. Install gas-fired units according to NFPA 54, "National Fuel Gas Code."
C. Install controls and equipment shipped by manufacturer for field installation with direct-fired heating and ventilating units.
3.3 CONNECTIONS
A. Drawings indicate general arrangement of piping, fittings, and specialties.
1. Gas Piping: Comply with requirements in Section 231123 "Facility Natural-Gas Piping."
Connect gas piping with shutoff valve and union, and with sufficient clearance for burner removal and service. Make final connections of gas piping to unit with corrugated, stainless-steel tubing flexible connectors complying with ANSI LC 1/CSA 6.26 equipment connections.
Addendum #1 Issued March 3, 2021
PACKAGED, DIRECT-FIRED, HEATING-ONLY MAKEUP-AIR UNITS
237423.13 - 6
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
B. Drain: Comply with requirements in Section 221316 "Sanitary Waste and Vent Piping" for traps and accessories on piping connections to condensate drain pans under condensing heat exchangers. Where installing piping adjacent to heating and ventilating units, allow space for service and maintenance.
C. Ground equipment according to Section 260526 "Grounding and Bonding for Electrical Systems."
D. Connect wiring according to Section 260519 "Low-Voltage Electrical Power Conductors and Cables."
3.4 FIELD QUALITY CONTROL
A. Manufacturer's Field Service: Engage a factory-authorized service representative to test and inspect components, assemblies, and equipment installations, including connections.
B. Perform tests and inspections.
C. Units will be considered defective if they do not pass tests and inspections.
D. Prepare test and inspection reports.
3.5 STARTUP SERVICE
A. Perform startup service.
B. Complete installation and startup checks according to manufacturer's written instructions and perform the following:
1. Inspect for visible damage to burner combustion chamber.
2. Inspect casing insulation for integrity, moisture content, and adhesion.
3. Verify that clearances have been provided for servicing.
4. Verify that controls are connected and operable.
5. Verify that filters are installed.
6. Purge gas line.
7. Inspect and adjust vibration isolators.
8. Verify bearing lubrication.
9. Inspect fan-wheel rotation for movement in correct direction without vibration and binding.
10. Adjust fan belts to proper alignment and tension.
C. Start unit according to manufacturer's written instructions.
1. Complete startup sheets and attach copy with Contractor's startup report.
Addendum #1 Issued March 3, 2021
PACKAGED, DIRECT-FIRED, HEATING-ONLY MAKEUP-AIR UNITS
237423.13 - 7
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
2. Inspect and record performance of interlocks and protective devices; verify sequences.
3. Operate unit for run-in period recommended by manufacturer.
4. Perform the following operations for both minimum and maximum firing, and adjust burner for peak efficiency:
a. Measure gas pressure at manifold.
b. Measure combustion-air temperature at inlet to combustion chamber.
c. Measure supply-air temperature and volume when burner is at maximum firing rate and when burner is off. Calculate useful heat to supply air.
5. Calibrate thermostats.
6. Adjust and inspect high-temperature limits.
7. Inspect dampers, if any, for proper stroke and interlock with return-air dampers.
8. Inspect controls for correct sequencing of heating, mixing dampers, refrigeration, and normal and emergency shutdown.
9. Measure and record airflow. Plot fan volumes on fan curve.
10. Verify operation of remote panel, including pilot-operation and failure modes. Inspect the following:
a. High-limit heat.
b. Alarms.
11. After startup and performance testing, change filters, verify bearing lubrication, and adjust belt tension.
12. Verify drain-pan performance.
13. Verify outdoor-air damper operation.
3.6 ADJUSTING
A. Adjust initial temperature set points.
B. Set field-adjustable switches and circuit-breaker trip ranges as indicated.
C. Occupancy Adjustments: When requested within 12 months from date of Substantial Completion, provide on-site assistance in adjusting system to suit actual occupied conditions.
Provide up to two visits to Project during other-than-normal occupancy hours for this purpose.
3.7 DEMONSTRATION
A. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain heating and ventilating units.
END OF SECTION 237423.13
Addendum #1 Issued March 3, 2021
PACKAGED, DIRECT-FIRED, HEATING-ONLY MAKEUP-AIR UNITS
237423.13 - 8
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
SECTION 238126 - SPLIT-SYSTEM AIR-CONDITIONERS
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.
1.2 SUMMARY
A. Section includes split-system air-conditioning and heat-pump units consisting of separate evaporator-fan and compressor-condenser components.
1.3 ACTION SUBMITTALS
A. Product Data: For each type of product indicated. Include rated capacities, operating characteristics, and furnished specialties and accessories. Include performance data in terms of capacities, outlet velocities, static pressures, sound power characteristics, motor requirements, and electrical characteristics.
B. Sustainable Design Submittals:
1. Product Data: For refrigerants.
2. Product Data: For energy performance.
1.4 CLOSEOUT SUBMITTALS
A. Operation and Maintenance Data: For split-system air-conditioning units to include in emergency, operation, and maintenance manuals.
1.5 MAINTENANCE MATERIAL SUBMITTALS
A. Furnish extra materials that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.
1. Filters: One set(s) for each air-handling unit.
Addendum #1 Issued March 3, 2021
SPLIT-SYSTEM AIR-CONDITIONERS
238126 - 1
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
1.6 QUALITY ASSURANCE
A. ASHRAE/IES Compliance: Applicable requirements in ASHRAE/IES 90.1.
1.7 COORDINATION
A. Coordinate sizes and locations of concrete bases with actual equipment provided. Cast anchor-bolt inserts into bases. Concrete, reinforcement, and formwork are specified in Section 033000 "Cast-in-Place Concrete."
B. Coordinate sizes and locations of roof curbs, equipment supports, and roof penetrations with actual equipment provided.
1.8 WARRANTY
A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace components of split-system air-conditioning units that fail in materials or workmanship within specified warranty period.
1. Warranty Period:
a. For Compressor: Five year(s) from date of Substantial Completion.
b. For Parts: One year(s) from date of Substantial Completion.
c. For Labor: One year(s) from date of Substantial Completion.
PART 2 - PRODUCTS
2.1 INDOOR UNITS (5 TONS OR LESS)
A. Wall-Mounted, Evaporator-Fan Components:
1. Refrigerant Coil: Copper tube, with mechanically bonded aluminum fins and thermal-expansion valve. Comply with ARI 206/110.
2. Fan: Direct drive, centrifugal.
3. Fan Motors:
a. Comply with NEMA designation, temperature rating, service factor, enclosure type, and efficiency requirements specified in Section 230513 "Common Motor Requirements for HVAC Equipment."
b. Multitapped, multispeed with internal thermal protection and permanent lubrication.
Addendum #1 Issued March 3, 2021
SPLIT-SYSTEM AIR-CONDITIONERS
238126 - 2
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
c. NEMA Premium (TM) efficient motors as defined in NEMA MG 1.
d. Mount unit-mounted disconnect switches on exterior of unit.
4. Airstream Surfaces: Surfaces in contact with the airstream shall comply with requirements in ASHRAE 62.1.
5. Condensate Drain Pans:
a. Fabricated with one percent slope in at least two planes to collect condensate from cooling coils (including coil piping connections, coil headers, and return bends) and humidifiers, and to direct water toward drain connection.
1) Length: Extend drain pan downstream from leaving face to comply with
ASHRAE 62.1.
2.2 OUTDOOR UNITS (5 TONS OR LESS)
A. Air-Cooled, Compressor-Condenser Components:
1. Compressor: Hermetically sealed with crankcase heater and mounted on vibration isolation device. Compressor motor shall have thermal- and current-sensitive overload devices, start capacitor, relay, and contactor.
a. Compressor Type: Scroll.
b. Two-speed compressor motor with manual-reset high-pressure switch and automatic-reset low-pressure switch.
c. Refrigerant: R-410A.
d. Refrigerant Coil: Copper tube, with mechanically bonded aluminum fins and liquid subcooler. Comply with ARI 206/110.
2. Heat-Pump Components: Reversing valve and low-temperature-air cutoff thermostat.
3. Fan: Aluminum-propeller type, directly connected to motor.
4. Motor: Permanently lubricated, with integral thermal-overload protection.
5. Low Ambient Kit: Permits operation down to 10 deg F.
2.3 ACCESSORIES
A. Control equipment and sequence of operation are specified in Section 230923 "Direct Digital Control (DDC) System for HVAC" and Section 230993.11 "Sequence of Operations for HVAC
DDC."
B. Thermostat: Low voltage with subbase to control compressor and evaporator fan.
C. Automatic-reset timer to prevent rapid cycling of compressor.
Addendum #1 Issued March 3, 2021
SPLIT-SYSTEM AIR-CONDITIONERS
238126 - 3
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
D. Monitoring:
1. Monitor constant and variable motor loads.
2. Monitor variable-frequency-drive operation.
3. Monitor cooling load.
4. Monitor air distribution static pressure and ventilation air volumes.
PART 3 - EXECUTION
3.1 INSTALLATION
A. Install units level and plumb.
B. Install evaporator-fan components using manufacturer's standard mounting devices securely fastened to building structure.
C. Install roof-mounted, compressor-condenser components on equipment supports specified in Section 077200 "Roof Accessories." Anchor units to supports with removable, cadmium-plated fasteners.
D. Equipment Mounting:
1. Install ground-mounted, compressor-condenser components on cast-in-place concrete equipment base(s). Comply with requirements for equipment bases and foundations specified in Section 033000 "Cast-in-Place Concrete."
2. Install ground-mounted, compressor-condenser components on polyethylene mounting base.
3. Comply with requirements for vibration isolation and seismic control devices specified in Section 230548 "Vibration and Seismic Controls for HVAC."
4. Comply with requirements for vibration isolation devices specified in Section 230548.13 "Vibration Controls for HVAC."
E. Install and connect precharged refrigerant tubing to component's quick-connect fittings. Install tubing to allow access to unit.
3.2 CONNECTIONS
A. Piping installation requirements are specified in other Sections. Drawings indicate general arrangement of piping, fittings, and specialties.
Addendum #1 Issued March 3, 2021
SPLIT-SYSTEM AIR-CONDITIONERS
238126 - 4
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
1. Water Coil Connections: Comply with requirements specified in Section 232113 "Hydronic Piping" and Section 232116 Hydronic Piping Specialties." Connect hydronic piping to supply and return coil connections with shutoff-duty valve and union or flange on the supply connection and with throttling-duty valve and union or flange on the return connection.
2. Remote, Water-Cooled Condenser Connections: Comply with requirements specified in Section 232113 "Hydronic Piping" and Section 232116 Hydronic Piping Specialties."
Connect hydronic piping to supply and return connections with shutoff-duty valve and union or flange on the supply connection and with throttling-duty valve and union or flange on the return connection.
B. Where piping is installed adjacent to unit, allow space for service and maintenance of unit.
3.3 FIELD QUALITY CONTROL
A. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect, test, and adjust components, assemblies, and equipment installations, including connections.
B. Perform tests and inspections.
1. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect components, assemblies, and equipment installations, including connections, and to assist in testing.
C. Tests and Inspections:
1. Leak Test: After installation, charge system and test for leaks. Repair leaks and retest until no leaks exist.
2. Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation.
3. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment.
D. Remove and replace malfunctioning units and retest as specified above.
E. Prepare test and inspection reports.
3.4 STARTUP SERVICE
A. Engage a factory-authorized service representative to perform startup service.
1. Complete installation and startup checks according to manufacturer's written instructions.
Addendum #1 Issued March 3, 2021
SPLIT-SYSTEM AIR-CONDITIONERS
238126 - 5
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
3.5 DEMONSTRATION
A. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain units.
END OF SECTION 238126
Addendum #1 Issued March 3, 2021
SPLIT-SYSTEM AIR-CONDITIONERS
238126 - 6
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
SECTION 238239.16 - PROPELLER UNIT HEATERS
1.1 SUMMARY
A. Section includes propeller unit heaters with electric-resistance heating coils.
1.2 DEFINITIONS
A. BAS: Building automation system.
B. CWP: Cold working pressure.
C. PTFE: Polytetrafluoroethylene plastic.
D. TFE: Tetrafluoroethylene plastic.
1.3 ACTION SUBMITTALS
A. Product Data: For each type of product.
1. Include rated capacities, operating characteristics, furnished specialties, and accessories.
1.4 CLOSEOUT SUBMITTALS
A. Operation and Maintenance Data: For propeller unit heaters to include in emergency, operation, and maintenance manuals.
PART 2 - PRODUCTS
2.1 DESCRIPTION
A. Assembly including casing, coil, fan, and motor in horizontal discharge configuration with adjustable discharge louvers.
B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.
Addendum #1 Issued March 3, 2021
PROPELLER UNIT HEATERS
238239.16 - 1
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
C. Comply with UL 2021.
D. Comply with UL 823.
2.2 HOUSINGS
A. Finish: Manufacturer's standard baked enamel applied to factory-assembled and -tested propeller unit heaters before shipping.
B. Discharge Louver: Adjustable fin diffuser for horizontal units and conical diffuser for vertical units.
2.3 COILS
A. Electric-Resistance Heating Coil: Nickel-chromium heating wire, free from expansion noise and 60-Hz hum, embedded in magnesium oxide refractory and sealed in steel or corrosion-resistant metallic sheath with fins no closer than 0.16 inch. Element ends shall be enclosed in terminal box. Fin surface temperature shall not exceed 550 deg F at any point during normal operation.
1. Circuit Protection: One-time fuses in terminal box for overcurrent protection and limit controls for high-temperature protection of heaters.
2. Wiring Terminations: Stainless-steel or corrosion-resistant material.
2.4 FAN AND MOTOR
A. Fan: Propeller type with aluminum wheel directly mounted on motor shaft in the fan venturi.
B. Motor: Permanently lubricated, multispeed. Comply with requirements in Section 230513 "Common Motor Requirements for HVAC Equipment."
2.5 CONTROLS
A. Control Devices:
1. Unit-mounted, fan-speed switch.
2. Unit- or space-mounted thermostat as indicated on the drawings.
Addendum #1 Issued March 3, 2021
PROPELLER UNIT HEATERS
238239.16 - 2
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine areas to receive propeller unit heaters for compliance with requirements for installation tolerances and other conditions affecting performance of the Work.
B. Examine roughing-in for electrical connections to verify actual locations before unit-heater installation.
C. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 INSTALLATION
A. Install propeller unit heaters to comply with NFPA 90A.
B. Install propeller unit heaters level and plumb.
C. Suspend propeller unit heaters from structure with all-thread hanger rods and elastomeric hangers. Hanger rods and attachments to structure are specified in Section 230529 "Hangers and Supports for HVAC Piping and Equipment." Vibration hangers are specified in Section
230548.13 "Vibration Controls for HVAC."
3.3 CONNECTIONS
A. Ground equipment according to Section 260526 "Grounding and Bonding for Electrical Systems."
B. Connect wiring according to Section 260519 "Low-Voltage Electrical Power Conductors and Cables."
3.4 FIELD QUALITY CONTROL
A. Perform the following tests and inspections with the assistance of a factory-authorized service representative:
1. Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation.
2. Operate electric heating elements through each stage to verify proper operation and electrical connections.
Addendum #1 Issued March 3, 2021
PROPELLER UNIT HEATERS
238239.16 - 3
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
3. Test and adjust controls and safety devices. Replace damaged and malfunctioning controls and equipment.
B. Units will be considered defective if they do not pass tests and inspections.
C. Prepare test and inspection reports.
3.5 ADJUSTING
A. Adjust initial temperature set points.
3.6 DEMONSTRATION
A. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain propeller unit heaters.
END OF SECTION 238239.16
Addendum #1 Issued March 3, 2021
PROPELLER UNIT HEATERS
238239.16 - 4
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
SECTION 260513 - MEDIUM-VOLTAGE CABLES
1.1 SUMMARY
A. Section includes cables and related cable splices, terminations, and accessories for medium-voltage (2001 to 35,000 V) electrical distribution systems.
1.2 DEFINITIONS
A. Jacket: A continuous nonmetallic outer covering for conductors or cables.
B. NETA ATS: Acceptance Testing Specification.
C. Sheath: A continuous metallic covering for conductors or cables.
1.3 ACTION SUBMITTALS
A. Product Data: For each type of cable. Include splices and terminations for cables and cable accessories.
1.4 INFORMATIONAL SUBMITTALS
A. Field quality-control reports.
1.5 FIELD CONDITIONS
A. Interruption of Existing Electric Service: Do not interrupt electric service to facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary electric service according to requirements indicated:
1. Notify Owner no fewer than five days in advance of proposed interruption of electric service.
2. Do not proceed with interruption of electric service without Owner's written permission.
Addendum #1 Issued March 3, 2021
MEDIUM-VOLTAGE CABLES
260513 - 1
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
PART 2 - PRODUCTS
2.1 CABLES
A. Cable Type: Type MV 105.
B. Conductor Insulation: Ethylene-propylene rubber.
1. Voltage Rating: 15 kV.
2. Insulation Thickness: 133 percent insulation level.
C. Conductor: Copper.
D. Comply with UL 1072, AEIC CS8, ICEA S-93-639/NEMA WC 74, and ICEA S-97-682.
E. Shielding: Copper tape, helically applied over semiconducting insulation shield.
F. Cable Jacket: Sunlight-resistant PVC.
2.2 CONNECTORS
A. Comply with ANSI C119.4 for connectors between aluminum conductors or for connections between aluminum to copper conductors.
B. Copper-Conductor Connectors: Copper barrel crimped connectors.
PART 3 - EXECUTION
3.1 INSTALLATION
A. Install cables according to IEEE 576.
B. Proof conduits prior to conductor installation by passing a wire brush mandrel and then a rubber duct swab through the conduit. Separate the wire brush and the rubber swab by 48 to 72 inches on the pull rope.
1. Wire Brush Mandrel: Consists of a length of brush approximately the size of the conduit inner diameter with stiff steel bristles and an eye on each end for attaching the pull ropes.
If an obstruction is felt, pull the brush back and forth repeatedly to break up the obstruction.
Addendum #1 Issued March 3, 2021
MEDIUM-VOLTAGE CABLES
260513 - 2
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
2. Rubber Duct Swab: Consists of a series of rubber discs approximately the size of the conduit inner diameter on a length of steel cable with an eye on each end for attaching the pull ropes. Pull the rubber duct swab through the duct to extract loose debris from the duct.
C. Pull Conductors: Do not exceed manufacturer's recommended maximum pulling tensions and sidewall pressure values.
1. Where necessary, use manufacturer-approved pulling compound or lubricant that does not deteriorate conductor or insulation.
2. Use pulling means, including fish tape, cable, rope, and basket-weave cable grips, that do not damage cables and raceways. Do not use rope hitches for pulling attachment to cable.
3. Use pull-in guides, cable feeders, and draw-in protectors as required to protect cables during installation.
4. Do not pull cables with ends unsealed. Seal cable ends with rubber tape.
D. Install exposed cables parallel and perpendicular to surfaces of exposed structural members and follow surface contours where possible.
E. Support cables according to Section 260529 "Hangers and Supports for Electrical Systems."
F. Install direct-buried cables on leveled and tamped bed of 3-inch- thick, clean sand. Separate cables crossing other cables or piping by a minimum of 2 inches of tamped earth, plus an additional 2 inches of sand. Install permanent markers at ends of cable runs, changes in direction, and buried splices.
G. Install "buried-cable" warning tape 12 inches above cables.
H. In manholes, handholes, pull boxes, junction boxes, and cable vaults, train cables around walls by the longest route from entry to exit; support cables at intervals adequate to prevent sag.
I. Install sufficient cable length to remove cable ends under pulling grips. Remove length of conductor damaged during pulling.
J. Install cable splices at pull points and elsewhere as indicated; use standard kits.
K. Install terminations at ends of conductors, and seal multiconductor cable ends with standard kits.
L. Arc Proofing: Unless otherwise indicated, arc proof medium-voltage cable at locations not protected by conduit, cable tray, direct burial, or termination materials. In addition to arc-proofing tape manufacturer's written instructions, apply arc proofing as follows:
1. Clean cable sheath.
2. Wrap metallic cable components with 10-mil pipe-wrapping tape.
3. Smooth surface contours with electrical insulation putty.
Addendum #1 Issued March 3, 2021
MEDIUM-VOLTAGE CABLES
260513 - 3
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
4. Apply arc-proofing tape in one half-lapped layer with coated side toward cable.
5. Band arc-proofing tape with two layers of 1-inch- wide half-lapped, adhesive, glass-cloth tape at each end of the arc-proof tape.
M. Seal around cables passing through fire-rated elements according to Section 078413 "Penetration Firestopping."
N. Install fault indicators on each phase where indicated.
O. Ground shields of shielded cable at terminations, splices, and separable insulated connectors.
Ground metal bodies of terminators, splices, cable and separable insulated-connector fittings, and hardware.
P. Ground shields of shielded cable at one point only. Maintain shield continuity and connections to metal connection hardware at all connection points.
Q. Identify cables according to Section 260553 "Identification for Electrical Systems." Identify phase and circuit number of each conductor at each splice, termination, pull point, and junction box. Arrange identification so that it is unnecessary to move the cable or conductor to read the identification.
END OF SECTION 260513
Addendum #1 Issued March 3, 2021
MEDIUM-VOLTAGE CABLES
260513 - 4
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
SECTION 260519 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
1.1 SUMMARY
A. Section Includes:
1. Copper building wire rated 600 V or less.
2. Metal-clad cable, Type MC, rated 600 V or less.
3. Connectors, splices, and terminations rated 600 V and less.
1.2 DEFINITIONS
A. VFC: Variable-frequency controller.
PART 2 - PRODUCTS
2.1 COPPER BUILDING WIRE
A. Description: Flexible, insulated and uninsulated, drawn copper current-carrying conductor with an overall insulation layer or jacket, or both, rated 600 V or less.
B. Standards:
1. Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and use.
2. RoHS compliant.
3. Conductor and Cable Marking: Comply with wire and cable marking according to UL's
"Wire and Cable Marking and Application Guide."
C. Conductors: Copper, complying with ASTM B 3 for bare annealed copper and with for stranded conductors.
D. Conductor Insulation:
1. Type THHN and Type THWN-2: Comply with UL 83.
2. Type XHHW-2: Comply with UL 44.
Addendum #1 Issued March 3, 2021
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
260519 - 1
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
2.2 METAL-CLAD CABLE, TYPE MC
A. Description: A factory assembly of one or more current-carrying insulated conductors in an overall metallic sheath.
B. Standards:
1. Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and use.
2. Comply with UL 1569.
3. Conductor and Cable Marking: Comply with wire and cable marking according to UL's
"Wire and Cable Marking and Application Guide."
C. Ground Conductor: Bare Insulated.
D. Conductor Insulation:
1. Type TFN/THHN/THWN-2: Comply with UL 83.
2. Type XHHW-2: Comply with UL 44.
E. Jacket: PVC applied over armor.
2.3 CONNECTORS AND SPLICES
A. Description: Factory-fabricated connectors, splices, and lugs of size, ampacity rating, material, type, and class for application and service indicated; listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and use.
B. Jacketed Cable Connectors: For steel and aluminum jacketed cables, zinc die-cast with set screws, designed to connect conductors specified in this Section.
PART 3 - EXECUTION
3.1 CONDUCTOR MATERIAL APPLICATIONS
A. Feeders: Copper; solid for No. 10 AWG and smaller; stranded for No. 8 AWG and larger.
B. Feeders: Copper for feeders smaller than No. 4 AWG; copper or aluminum for feeders No. 4 AWG and larger. Conductors shall be solid for No. 10 AWG and smaller; stranded for No. 8 AWG and larger.
Addendum #1 Issued March 3, 2021
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
260519 - 2
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
C. Branch Circuits: Copper. Solid for No. 10 AWG and smaller; stranded for No. 8 AWG and larger.
D. VFC Output Circuits Cable: Extra-flexible stranded for all sizes.
E. Power-Limited Fire Alarm and Control: Solid for No. 12 AWG and smaller.
3.2 CONDUCTOR INSULATION AND MULTICONDUCTOR CABLE APPLICATIONS AND
WIRING METHODS
A. Service Entrance: Type THHN/THWN-2, single conductors in raceway; Type XHHW-2, single conductors in raceway.
B. Exposed Feeders: Type THHN/THWN-2, single conductors in raceway Type XHHW-2, single conductors in raceway.
C. Feeders Concealed in Ceilings, Walls, Partitions, and Crawlspaces: Type THHN/THWN-2, single conductors in raceway; Existing Walls and Partitions only: Metal-clad cable, Type MC.
D. Feeders Concealed in Concrete, below Slabs-on-Grade, and Underground:
Type THHN/THWN-2, single conductors in raceway; Type XHHW-2, single conductors in raceway.
E. Exposed Branch Circuits: Type THHN/THWN-2, single conductors in raceway.
F. Branch Circuits Concealed in Ceilings, Walls, and Partitions: Type THHN/THWN-2, single conductors in raceway; Existing Walls and Partitions only: Metal-clad cable, Type MC.
G. Branch Circuits Concealed in Concrete, below Slabs-on-Grade, and Underground:
Type THHN/THWN-2, single conductors in raceway; Type XHHW-2, single conductors in raceway.
H. Cord Drops and Portable Appliance Connections: Type SO, hard service cord with stainless-steel, wire-mesh, strain relief device at terminations to suit application.
I. VFC Output Circuits: Type XHHW-2 in metal conduit.
3.3 INSTALLATION OF CONDUCTORS AND CABLES
A. Conceal cables in finished walls, ceilings, and floors unless otherwise indicated.
B. Complete raceway installation between conductor and cable termination points according to Section 260533 "Raceways and Boxes for Electrical Systems" prior to pulling conductors and cables.
Addendum #1 Issued March 3, 2021
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
260519 - 3
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
C. Use manufacturer-approved pulling compound or lubricant where necessary; compound used must not deteriorate conductor or insulation. Do not exceed manufacturer's recommended maximum pulling tensions and sidewall pressure values.
D. Use pulling means, including fish tape, cable, rope, and basket-weave wire/cable grips, that will not damage cables or raceway.
E. Install exposed cables parallel and perpendicular to surfaces of exposed structural members, and follow surface contours where possible.
F. Support cables according to Section 260529 "Hangers and Supports for Electrical Systems."
3.4 CONNECTIONS
A. Tighten electrical connectors and terminals according to manufacturer's published torque-tightening values. If manufacturer's torque values are not indicated, use those specified in UL 486A-486B.
B. Make splices, terminations, and taps that are compatible with conductor material.
1. Use oxide inhibitor in each splice, termination, and tap for aluminum conductors.
C. Wiring at Outlets: Install conductor at each outlet, with at least 6 inches of slack.
D. Comply with requirements in Section 283176 - FIRE ALARM AND MASS NOTIFICATION SYSTEM for connecting, terminating, and identifying wires and cables.
3.5 IDENTIFICATION
A. Identify and color-code conductors and cables according to Section 260553 "Identification for Electrical Systems."
B. Identify each spare conductor at each end with identity number and location of other end of conductor, and identify as spare conductor.
3.6 SLEEVE AND SLEEVE-SEAL INSTALLATION FOR ELECTRICAL PENETRATIONS
A. Install sleeves and sleeve seals at penetrations of exterior floor and wall assemblies. Comply with requirements in Section 260544 "Sleeves and Sleeve Seals for Electrical Raceways and Cabling."
Addendum #1 Issued March 3, 2021
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
260519 - 4
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
3.7 FIRESTOPPING
A. Apply firestopping to electrical penetrations of fire-rated floor and wall assemblies to restore original fire-resistance rating of assembly according to Section 078413 "Penetration Firestopping."
3.8 FIELD QUALITY CONTROL
A. Perform tests and inspections.
1. After installing conductors and cables and before electrical circuitry has been energized, test service entrance and feeder conductors for compliance with requirements.
2. Perform each of the following visual and electrical tests:
a. Inspect exposed sections of conductor and cable for physical damage and correct connection according to the single-line diagram.
b. Test bolted connections for high resistance using one of the following:
1) A low-resistance ohmmeter.
2) Calibrated torque wrench.
3) Thermographic survey.
c. Inspect compression-applied connectors for correct cable match and indentation.
d. Inspect for correct identification.
e. Inspect cable jacket and condition.
f. Insulation-resistance test on each conductor for ground and adjacent conductors.
Apply a potential of 500-V dc for 300-V rated cable and 1000-V dc for 600-V rated cable for a one-minute duration.
g. Continuity test on each conductor and cable.
h. Uniform resistance of parallel conductors.
3. Initial Infrared Scanning: After Substantial Completion, but before Final Acceptance, perform an infrared scan of each splice in conductors No. 3 AWG and larger. Remove box and equipment covers so splices are accessible to portable scanner. Correct deficiencies determined during the scan.
a. Instrument: Use an infrared scanning device designed to measure temperature or to detect significant deviations from normal values. Provide calibration record for device.
b. Record of Infrared Scanning: Prepare a certified report that identifies switches checked and that describes scanning results. Include notation of deficiencies detected, remedial action taken, and observations after remedial action.
Addendum #1 Issued March 3, 2021
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
260519 - 5
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
4. Follow-up Infrared Scanning: Perform an additional follow-up infrared scan of each switch 11 months after date of Substantial Completion.
B. Cables will be considered defective if they do not pass tests and inspections.
C. Prepare test and inspection reports to record the following:
1. Procedures used.
2. Results that comply with requirements.
3. Results that do not comply with requirements, and corrective action taken to achieve compliance with requirements.
END OF SECTION 260519
Addendum #1 Issued March 3, 2021
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
260519 - 6
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
SECTION 260523 - CONTROL-VOLTAGE ELECTRICAL POWER CABLES
1.1 SUMMARY
A. Section Includes:
1. Category 6 balanced twisted pair cable.
2. Balanced twisted pair cabling hardware.
3. RS-485 cabling.
4. Low-voltage control cabling.
5. Control-circuit conductors.
6. Identification products.
1.2 DEFINITIONS
A. EMI: Electromagnetic interference.
B. Low Voltage: As defined in NFPA 70 for circuits and equipment operating at less than 50 V or for remote-control and signaling power-limited circuits.
C. Plenum: A space forming part of the air distribution system to which one or more air ducts are connected. An air duct is a passageway, other than a plenum, for transporting air to or from heating, ventilating, or air-conditioning equipment.
1.3 ACTION SUBMITTALS
A. Product Data: For each type of product.
1.4 INFORMATIONAL SUBMITTALS
A. Field quality-control reports.
Addendum #1 Issued March 3, 2021
CONTROL-VOLTAGE ELECTRICAL POWER CABLES
260523 - 1
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
2.1 PERFORMANCE REQUIREMENTS
A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.
B. Flame Travel and Smoke Density in Plenums: As determined by testing identical products according to NFPA 262, by a qualified testing agency. Identify products for installation in plenums with appropriate markings of applicable testing agency.
1. Flame Travel Distance: 60 inches or less.
2. Peak Optical Smoke Density: 0.5 or less.
3. Average Optical Smoke Density: 0.15 or less.
C. Flame Travel and Smoke Density for Riser Cables in Non-Plenum Building Spaces: As determined by testing identical products according to UL 1666.
D. Flame Travel and Smoke Density for Cables in Non-Riser Applications and Non-Plenum Building Spaces: As determined by testing identical products according to UL 1685.
E. RoHS compliant.
2.2 CATEGORY 6 BALANCED TWISTED PAIR CABLE
A. Description: Four-pair, balanced-twisted pair cable, certified to meet transmission characteristics of Category 6 cable at frequencies up to 250MHz.
B. Standard: Comply with NEMA WC 66/ICEA S-116-732 and TIA-568-C.2 for Category 6 cables.
C. Conductors: 100-ohm, 23 AWG solid copper.
1. Lead Content: Less than 300 parts per million.
D. Cable Rating: Plenum.
2.3 BALANCED TWISTED PAIR CABLE HARDWARE
A. Description: Hardware designed to connect, splice, and terminate balanced twisted pair copper communications cable.
Addendum #1 Issued March 3, 2021
CONTROL-VOLTAGE ELECTRICAL POWER CABLES
260523 - 2
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
B. General Requirements for Balanced Twisted Pair Cable Hardware:
1. Comply with the performance requirements of Category 6.
2. Comply with TIA-568-C.2, IDC type, with modules designed for punch-down caps or tools.
3. Cables shall be terminated with connecting hardware of same category or higher.
C. Source Limitations: Obtain balanced twisted pair cable hardware from same manufacturer as balanced twisted pair cable, from single source.
D. Connecting Blocks: 110-style IDC for Category 6. Provide blocks for the number of cables terminated on the block, plus percent spare, integral with connector bodies, including plugs and jacks where indicated.
E. Legend:
1. Machine printed, in the field, using adhesive-tape label.
2. Snap-in, clear-label covers and machine-printed paper inserts.
2.4 RS-485 CABLE
A. Standard Cable: NFPA 70, Type CMG.
1. PVC insulation.
2. Unshielded.
3. PVC jacket.
4. Flame Resistance: Comply with UL 1685.
5. Lead Content: Less than 300 parts per million.
B. Plenum-Rated Cable: NFPA 70, Type CMP.
1. Fluorinated ethylene propylene insulation.
2. Unshielded.
3. Fluorinated ethylene propylene jacket.
4. Flame Resistance: NFPA 262.
PART 3 - EXECUTION
3.1 EXAMINATION
A. Test cables on receipt at Project site.
1. Test each pair of twisted pair cable for open and short circuits.
Addendum #1 Issued March 3, 2021
CONTROL-VOLTAGE ELECTRICAL POWER CABLES
260523 - 3
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
3.2 INSTALLATION OF RACEWAYS AND BOXES
A. Comply with requirements in Section 260533 "Raceways and Boxes for Electrical Systems" for raceway selection and installation requirements for boxes, conduits, and wireways as supplemented or modified in this Section.
1. Outlet boxes for cables shall be no smaller than 4 inches square by 2-1/8 inches deep with extension ring sized to bring edge of ring to within 1/8 inch of the finished wall surface.
2. Flexible metal conduit shall not be used.
B. Comply with TIA-569-D for pull-box sizing and length of conduit and number of bends between pull points.
C. Install manufactured conduit sweeps and long-radius elbows if possible.
D. Raceway Installation in Equipment Rooms:
1. Position conduit ends adjacent to a corner on backboard if a single piece of plywood is installed, or in the corner of the room if multiple sheets of plywood are installed around perimeter walls of the room.
2. Install cable trays to route cables if conduits cannot be located in these positions.
3. Secure conduits to backboard if entering the room from overhead.
4. Extend conduits 3 inches above finished floor.
5. Install metal conduits with grounding bushings and connect with grounding conductor to grounding system.
E. Backboards: Install backboards with 96-inch dimension vertical. Butt adjacent sheets tightly and form smooth gap-free corners and joints.
3.3 INSTALLATION OF CONDUCTORS AND CABLES
A. Comply with NECA 1.
B. General Requirements for Cabling:
1. Comply with TIA-568-C Series of standards.
2. Comply with BICSI ITSIMM, Ch. 5, "Copper Structured Cabling Systems."
3. Terminate all conductors; no cable shall contain unterminated elements. Make terminations only at indicated outlets, terminals, and cross-connect and patch panels.
4. Cables may not be spliced and shall be continuous from terminal to terminal. Do not splice cable between termination, tap, or junction points.
Addendum #1 Issued March 3, 2021
CONTROL-VOLTAGE ELECTRICAL POWER CABLES
260523 - 4
NORTH CAROLINA ANG
CHARLOTTE, NC VOLUME 2 OF 2
5. Cables serving a common system may be grouped in a common raceway. Install network cabling and control wiring and cable in separate raceway from power wiring. Do not group conductors from different systems or different voltages.
6. Secure and support cables at intervals not exceeding 30 inches and not more than 6 inches from cabinets, boxes, fittings, outlets, racks, frames, and terminals.
7. Bundle, lace, and train conductors to terminal points without exceeding manufacturer's limitations on bending radii, but not less than radii specified in BICSI ITSIMM, Ch. 5, "Copper Structured Cabling Systems." Install lacing bars and distribution spools.
8. Do not install bruised, kinked, scored, deformed, or abraded cable. Remove and discard cable if damaged during installation and replace it with new cable.
9. Cold-Weather Installation: Bring cable to room temperature before dereeling. Do not use heat lamps for heating.
10. Pulling Cable: Comply with BICSI ITSIMM, Ch. 5, "Copper Structured Cabling Systems." Monitor cable pull tensions.
11. Support: Do not allow cables to lie on removable ceiling tiles.
12. Secure: Fasten securely in place with hardware specifically designed and installed so as to not damage cables.
13. Provide strain relief.
14. Keep runs short. Allow extra length for connecting to terminals.
This is the start of the file's text. The full file is on GovTribe.
File details come from the government source that posted it. Updated .