HomeMy WebLinkAbout33SECTION 230000 - HVAC GENERAL CONDITIONS
PART 1 GENERAL
1.01 APPLICABILITY
A. This section supplements all sections of the Specifications for Division 23 and
shall apply to all phases of work hereinafter specified, shown on the Drawings, or
required to provide a complete installation of approved HVAC systems.
1.02 DEFINITIONS
A. Work" is hereby defined as, "The construction and services required by the
Contract Documents whether completed or partially completed and includes all labor,
materials, equipment, and services provided or to be provided by the Contractor to
fulfill the Contractor's obligations. The work may constitute the whole or a part
of the eroject."
B. Furnish is hereby defined as, "To supply and deliver, unload, and inspect for
damage."
C. "Install" is hereby defined as, "To unpack, assemble, erect, apply, place, finish,
cure, protect, clean, connect, and place into operation into the work."
D. "Provide" is hereby defined as, "To furnish and install."
E. "Connect" is hereby defined as, "To bring service to the equTment and make final
attachment including necessary ductwork, piping, wiring, etc.
F. "Concealed" is hereby defined as, "Hidden from sight in chases, furred spaces,
shafts, hung ceilings, embedded in construction, in crawl spaces, or buried."
G. "Exposed" is hereby defined as, "Not installed underground nor concealed as defined
by the Specifications."
H. 'Drawings is hereby defined as, "All plans, details, equipment schedules,
diagrams, sketches, etc. issued for the construction of the work."
1.03 CODES AND STANDARDS
A. Perform work in accordance with the applicable Building Code, Electrical Code, Fire
Code, Mechanical Code, Plumbing Code, Energy Code, and all other applicable codes,
amendments, and ordinances. Also perform all work in accordance with the Americans
with Disabilities Act (ADA) and the Authority Having Jurisdiction (AHJ) including
Fire Marshal(s).
B. Perform work in accordance with Landlord requirements, including any Tenant
Criteria Manuals and Lease Exhibits, where applicable.
C. Perform work in accordance with the applicable utility companies serving the
project. Make all arrangements with the utility companies for proper coordination
of the work.
D. Recognized Standards: Design, manufacture, testing and method of installation of
all apparatus and materials furnished under the requirements of these
Specifications shall conform to the latest publications or standard rules of
Underwriters Laboratories, Inc. (U.L.), American Society for Testing and Materials
WTM), American National Standards Institute (ANSI), and National Electrical Code
C), National Fire Protection Association (NFPA), American Society of Heating,
Refrigerating and Air -Conditioning Engineers (ASHRAE), and the Sheet Metal and Air
Conditioning Contractors' National Association (SMACNA).
E. The Contract Documents shall take precedence where the Contract Documents exceed
code, Landlord, utility, or recognized standards requirements.
1.04 PERMITS AND FEES
A. Permits, licenses, fees, inspections and arrangements required for the work under
this Contract shall be obtained by the Contractor at his expense, unless otherwise
indicated.
1.05 CONTRACT DRAWINGS
A. The Contractor is responsible to obtain, fully understand, and coordinate the work
with the complete set of Contract Documents. Any required corrections, including
all associated costs, arising from issues caused by the Contractor's failure to
understand and/or coordinate the work with the complete set of Contract Documents
are the Contractor's sole responsibility.
B. Work under these sections is diagrammatic unless indicated otherwise and is
intended to convey the scope of work and indicate the general arrangement of
ductwork, piping, equipment, and accessories. Follow these drawings in laying out
the work and verify spaces for the installation of these materials and equipment.
Wherever a question exists as to the exact intended location of ductwork, piping,
or equipment, obtain instructions from the Architect before proceeding with the
work.
C. Notify the Architect for resolution if a discrepancy is discovered within the
Contract Documents. Failure of the Contractor to notify the Architect of
discrepancies shall result in the resolution becoming the Contractor's
responsibility and subject to the Architect's review and possible rejection.
Should the Architect reject a discrepancy resolution of which they were not
notified, the Contractor is fully responsible to correct the installation,
including all associated costs, until approval of the installation is given by the
Architect.
1.06 EXISTING CONDITIONS
A. Verify all existing conditions prior to beginning work.
B. Any existing conditions indicated in the Contract Documents are based on
information drawings provided by others and possibly limited field verification.
The Contractor shall adjust for actual field conditions at no additional expense to
the Owner.
C. The Contractor shall visit the project site, review existing conditions against the
Contract Documents, and familiarize himself with the work prior to bidding and
start of the work. By signing the Contract, the Contractor acknowledges the site
Visit has been completed and the existing conditions are accepted.
D. The Contractor shall notify the Architect of major discrepancies in writing so the
appropriate modifications to the design can be made without delay to the project.
The Contractor assumes full responsibility of adjusting for discrepancies of which
the Architect is not informed.
1.07 SUBMITTALS
A. Shop Drawings:
1. Furnish the Architect shop drawing portfolios containing names of
manufacturer and cut sheets of equipment to be used on the project. Use
manufacturer's specification sheets identified by number indicated on
drawings or schedules. Indicate catalog number on the cut sheets. As
applicable, provide construction data, weight and dimensional data, voltage
ratings, performance data, listing data, pump curves, fan curves and sound
data as part of the shop drawing submittal.
2. Submittals are reviewed only for general compliance with the Contract
Documents. Dimensions, quantities and details are not checked during
submittal review. Review of the submittals does not relieve the Contractor
of the responsibility for providing all materials, equipment and accessories
necessary for a complete and operational system meeting the requirements of
the project and the intent of the Contract Documents. The responsibility for
coordination of substituted materials and equipment lies solely with the
substituting Contractor.
3.
Electrical Characteristics:Verify erlfy that proper power supply is available
prior to ordering equipment. Verify proper voltage, phase and current rating
of power supply and inform Engineer of any deviat'
ons prior to order,
connection of equipment or start-up. Responsibility for verification of
proper power supply voltage and any product returns or damage resulting from
incorrect connections shall rest with this Contractor.
B. Project Record Documents: Provide as specified.
C. Operation and Maintenance Data: Include manufacturer's descriptive literature,
operating instructions, installation instructions, maintenance and repair data, and
parts listing.
D. Test Reports: Provide as specified.
1.08 QUALITY ASSURANCE
A. Manufacturer Qualifications: Company specializing in manufacturing the Products
specified in this section with minimum five years experience.
B. Installer Qualifications: Company specializing in performing the work of this
section, with minimum five years experience.
C. Products:
1. Listed and classified by Underwriters Laboratories Inc. as suitable for the
purpose specified and indicated.
D. All equipment and components shall be free of all rust/corrosion or any visible
damage. All items not complying with this requirement shall be replaced without
any change in the Contract amount.
E. Equipment performance and accessories shall be as scheduled on the Drawings and
specified herein. Inclusion in both locations is not a prerequisite to inclusion
in the Contract. Equipment and accessories specified in either location shall be
included in the Contract. Provide all necessary accessories and connections as
required for a complete, functional system, including all required components
reasonably inferred to as necessary although such components may or may not be
specifically indicated in the Contract Documents.
F. Code or utility company requirements shall supersede any conflicting requirements
of this section.
1.09 DELIVERY, STORAGE, AND HANDLING
A. Rooftop Equipment: Protect units from physical damage by storing off site until
roof mounting curbs are in place, ready for immediate installation of units.
B. Protect insulation from weather and construction traffic, dirt, water, chemical,
and mechanical damage, by storing in original wrapping.
C. Protect dampers and accessories from damage to operating linkages, blades and
finishes.
D. Provide temporary end caps and closures on piping and fittings. Maintain in place
until installation.
E. Protect motors stored on site from weather and moisture by maintaining factory
covers and suitable weather-proof covering. For extended outdoor storage, remove
motors from equipment and store separately.
1.10 WARRANTY AND GUARANTEE
A. Submit manufacturer's warranty and ensure forms have been filled out in Owner's
name and registered with manufacturer.
B. Provide one year manufacturer warranty for pumps.
C. Provide three year manufacturers warranty for solid state ignition modules.
D. Provide five year manufacturers warranty for compressors, heat exchangers,
condensing units, and electronic air cleaners.
PART 2 PRODUCTS
2.01 SUBSTITUTIONS
A. The manufacturers listed are listed to set minimum standards for quality, design,
and functionality. The products of other manufacturers may be submitted, at the
Contractor's option, during shop drawing review unless indicated otherwise. The
products of other manufacturers shall meet or exceed all requirements of the
Contract Documents. The Contractor accepts all responsibility for costs and
coordination issues arising out of the substitution of materials or equipment, and
the coordination of such substitutions with all other contractors and
subcontractors.
B. The Contractor may use any of the following ductwork, piping or insulation
materials at his option, provided the selected material meets with the approval of
all State, local authorities and any utility company requirements. Verification of
compliance of the selected material is the sole responsibility of the installing
Contractor.
PART 3 EXECUTION
3.01 COORDINATION OF WORK
A. Examine the Contract Documents as a whole for the work of other trades. Coordinate
all work accordingly.
B. Promptly report to the Architect any delay or difficulties encountered in the
installation of the work, which might prevent prompt and proper installation, or
make it unsuitable to connect with or receive the work of others. Failure to so
report shall constitute an acceptance of the work of other trades as being fit and
proper for the execution of this work.
C. Plan, lay out, and coordinate the work with all trades well enough in advance so
that it proceeds with a minimum of interference to work that has not been completed
and work that is in progress. Inform all trades of openings required for the work
and provide all special frames, sleeves, and anchor bolts required. The HVAC
system layout may be altered to suit the conditions with engineer approval, prior
to the installation of any work and without additional cost to the Owner.
Conflicts arising from lack of coordination shall be this Contractor's
responsibility.
D. Perform all work in conformity with the Contract Documents and afford other trades
reasonable opportunity for the execution of their work. Properly connect and
coordinate this work with the work of other trades at such time and in such a
manner as not to delay or interfere with their work.
E. All roofing penetrations shall be flashed and weather sealed by the roofing
manufacturer's authorized roofing contractor at this Contractor's expense. This
Contractor shall contract with the factory authorized roofing contractor for the
specific roofing system applicable to this Project. The use of an unauthorized
roofing contractor,may result
In removal and replacement ent of the penetration
systems
at this Contractors
expense.
F. All temperature control wiring, thermostat wiring, damper interlock wiring, control
Panel interlock wiring and miscellaneous eous low voltage wiring associated with the
equipment furnished or installed under this contract shall be furnished and
installed by the mechanical contractor or his sub -contractor. All wiring installed
under this contract shall be in full compliance with the National Electrical Code,
all State and local codes and requirements of the Electrical Specifications for
this project.
3.02 EXAMINATION
A. Verify field measurements are as indicated on the Drawings.
B. Verify all equipment locations prior to rough -in. Maintain adequate equipment
service clearance per manufacturer and code.
C. Verify routing of all ductwork and piping in field prior to fabrication or
installation. Verify adequate clearance with structure, light fixtures, and
ceiling heights.
D. Verify that proper fuel and power supply is available for connection.
3.03 INTERFACE WITH OTHER PRODUCTS
A. Install all ductwork, pipe, equipment, and accessories to preserve fire resistance
rating of partitions and other elements, using materials and methods specified.
3.04 FIELD QUALITY CONTROL
A. Provide tests as necessary to establish the adequacy, quality, safety, completed
status, and suitable operation of each system. Tests shall be conducted under the
supervision of the Architect.
3.05 CLEANING AND REPAIR
A. Clean fire suppression parts to remove harmful materials.
B. Clean exposed surfaces of all ductwork pipe, equipment, and accessories of all
dirt, debris, splatter, and other deleterious materials. Follow the manufacturer's
recommendations for cleaning as applicable.
C. Repair or replace damaged ductwork, pipe, equipment, and accessories, as directed
by and to the satisfaction of the Architect, where marring or disfigurement has
occurred. All pipe, equipment, and accessories shall be new.
3.06 PROJECT CLOSEOUT
A. Project Record Documents: At project closeout, provide one printed copy and one
electronic copy of project record drawings to the Owner. Information contained on
project record drawings shall include, as a minimum:
1. Actual locations of all equipment, ductwork, air inlets/outlets, accessories,
etc.
2. Actual routing of ductwork with sizes and elevations.
3. Actual locations of control devices including valves and
volume dampers.
B. Operation and Maintenance Data: At project closeout, submit to the Architect two
copies of descriptive p p e li terature, maintenance and operation data for all hvac
equipment, control systems, accessories, and materials used. Include maintenance
procedures, intervals, and parts list of each item installed under this contract.
Include all manufacturer's guarantees and warranties.
C. Maintenance Materials: At project closeout, furnish to the Owner the following:
1. One set of replacement ent
filters for all hvac
t.
2. The maintenance contract for the hvac system, if applicable.
D. Test Reports: At project closeout, submit to the Architect two copies of the
following:
1. Testing, Adjusting and Balancing Report
END OF SECTION
SECTION 230548 - VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND EQUIPMENT
PART 1 GENERAL
1.01 SECTION INCLUDES
A. Vibration isolators.
B. Equipment:
1. Fans, axial and centrifugal
2. Packaged roof top equipment
1.02 SUBMITTALS
A. Product Data: Provide schedule of vibration isolator type with location and load
on each.
PART 2 PRODUCTS
2.01 MANUFACTURERS
A. Isolation Technology, Inc.; Kinetics Noise Control, Inc.; Mason Industries.
2.02 VIBRATION ISOLATORS
A. Restrained Open Spring Isolators:
1. Springs: Minimum horizontal stiffness equal to 75 percent vertical
stiffness, with working deflection between 0.3 and 0.6 of maximum deflection.
Color code springs for load carrying capacity.
2. Spring Mounts: Provide with leveling devices, minimum 0.25 inch thick
neoprene sound pads, and zinc chromate plated hardware.
3. Sound Pads: Size for minimum deflection of 0.05 inch; meet requirements for
neoprene pad isolators.
4. Restraint: Provide heavy mounting frame and limit stops.
5. For Exterior and Humid Areas: Hot dipped galvanized housings and neoprene
coated springs.
B. Spring Hanger:
1. Springs: Minimum horizontal stiffness equal to 75 percent vertical
stiffness, with working deflection between 0.3 and 0.6 of maximum deflection.
Color code springs for load carrying capacity.
2. Housings: Incorporate neoprene isolation pad meeting requirements for
neoprene pad isolators or rubber hanger with threaded insert.
3. Misalignment: Capable of 20 degree hanger rod misalignment.
4. For Exterior and Humid Areas: Hot dipped galvanized housings and neoprene
coated springs.
C. Neoprene Pad Isolators:
1. Rubber or neoprene waffle pads.
a. Hardness: 30 durometer.
b. Thickness: Minimum 1/2 inch.
C. Maximum Loading: 50 psi.
d. Rib Height: Maximum 0.7 times width.
2. Configuration: Single layer.
D. Rubber Mount or Hanger: Molded rubber designed for 0.4 inch deflection with
threaded insert.
E. Glass Fiber Pads: Neoprene jacketed pre -compressed molded glass fiber.
PART 3 EXECUTION
3.01 INSTALLATION
A. Install in accordance with manufacturer's instructions.
B. On closed spring isolators, adjust so side stabilizers are clear under normal
operating conditions.
C. Prior to making piping connections to equipment with operating weights
substantially different from installed weights, block up equipment with temporary
shims to final height. When full load is applied, adjust isolators to load to
allow shim removal.
D. Support piping connections to equipment mounted on isolators using isolators or
resilient hangers to nearest flexible pipe connector.
E. Provide flexible connections on all piping and ductwork connections to equipment.
Refer to other sections of this Specification for the acceptable types of flexible
connectors to be used.
F. Selection of type, thickness and deflection of vibration isolation shall be by the
vibration control manufacturer based on the specific equipment type and size, as
scheduled on the Drawings and indicated below.
3.02 SCHEDULES
A. Equipment Isolation Schedule: (Minimum deflection as sized by the isolation
equipment manufacturer.)
1. Fans, axial and centrifugal.
a. Small fans up to 22" diameter wheel:
1) Rubber Mount or Hanger
2. Packaged roof top equipment.
a. Above grade roof structures:
1) Base: Roof Curb.
2) Isolation: Full perimeter Neoprene Pad between curb and units.
Provide restrained spring vibration isolation curbs when
indicated on the Drawings.
END OF SECTION
SECTION 230593 - TESTING, ADJUSTING, AND BALANCING FOR HVAC
PART 1 GENERAL
1.01 SEC11ON INCLUDES
A. Testing, adjustment, and balancing of air systems.
1. Air handling units; Packaged heating and/or cooling equipment; Fans. (Exhaust
and supply); Coils; Terminal equipment; Air inlets and outlets. (Diffusers,
grilles, louvers, etc.)
B. Measurement of final operating condition of HVAC systems.
C. Independent agency requirements.
1.02 SUBMITTALS
A. Qualifications: Submit name of adjusting and balancing agency and TAB supervisor
for approval within 30 days after award of Contract. Provide TAB Agency
qualifications.
B. Final Report: Indicate deficiencies in systems that would prevent proper testing,
adjusting, and balancing of systems and equipment to achieve specified
performance.
1. Submit to the Construction Manager within two weeks after completion of
testing, adjusting, and balancing.
2. Provide reports in bound manuals, complete with index page and indexing tabs,
with cover identification at front and side. Include set of reduced drawings
with air outlets and equipment identified to correspond with data sheets, and
indicating thermostat and equipment locations.
3. Include actual instrument list, with manufacturer name, serial number, and
date of calibration.
4. Form of Test Reports: Where the TAB standard being followed recommends a
report format use that; otherwise, follow ASHRAE Std 111.
5. Include the following on the title page of each report:
a. Name, address and telephone number of Testing, Adjusting, and Balancing
Agency.
1.03 WARRANTY b. Project: Name; location; Engineer; Contractor, Report date.
A. The Balancing c ng Contractor shall be prepared to return to the site at no additional
cost to re -adjust air quantities as required to provide uniform temperatures,
eliminate drafts and objectionable noises during the first year of occupancy,
including one full heating and one full cooling season, after the acceptance of the
final balancing report.
PART 2 PRODUCTS - NOT USED
PART 3 EXECUTION
3.01 GENERAL REQUIREMENTS
A. Perform total system balance in accordance with one of the following:
1. AABC MN -1, AABC National Standards for Total System Balance.
2. ASHRAE Std 111, Practices for Measurement, Testing, Adjusting and Balancing
of Building Heating, Ventilation, Air -Conditioning, and Refrigeration
Systems.
3. NEBB Procedural Standards for Testing Adjusting Balancing of Environmental
Systems.
4. SMACNA HVAC Systems Testing, Adjusting, and Balancing.
B. Begin work after completion of systems to be tested, adjusted, or balanced and
complete work prior to Substantial Completion of the Project.
C. Where HVAC systems and/or components interface with life safety systems, including
fire and smoke detection, alarm, and control, coordinate scheduling and testing and
inspection procedures with the authorities having jurisdiction.
D. TAB Agency Qualifications:
1. Company specializing in the testing, adjusting, and balancing of systems
specified in this Section with a minimum of five years experience.
2. Certified by one of the following:
a. AABC, Associated Air Balance Council; upon completion submit AABC
National Performance Guaranty.
b. NEBB, National Environmental Balancing Bureau.
C. TABS, The Testing, Adjusting, and Balancing Bureau of National Energy
Management Institute.
3. The TAB Agency must be a completely independent, third party balancing
contractor with no financial, common owners or other ties to the installing
contractors.
E. TAB Supervisor and Technician Qualifications: Certified by some organization as
TAB agency.
3.02 ADJUSTMENT TOLERANCES
A. Air Handling Systems; Air Outlets and Inlets; Hydropic Systems: Adjust to within
plus or minus 15 percent of design.
3.03 RECORDING AND ADJUSTING
A. Permanently mark settings of valves, dampers, and other adjustment devices allowing
settings to be restored. Set and lock memory stops.
B. Mark on
the Drawings the locations where traverse and other critical measurements
were taken and cross reference the location in the final report.
3.04 AIR SYSTEM PROCEDURE
A. Adjust air handling
and distributions terns to provide required or design supply,
1 9 Ys P q 9 PP Y.
return, and exhaust air quantities.
B. Make air quantity measurements in ducts by Pitot tube traverse of entire cross
sectional area of duct.
C. Measure air quantities at air inlets and outlets.
D. Adjust distribution system to obtain uniform space temperatures free from
objectionable drafts and noise.
E. Use volume control devices to regulate air quantities only to extend that
adjustments do not create objectionable air motion or sound levels. Effect volume
control by duct internal devices such as dampers and splitters. Do not use
diffuser, grille or register integral dampers for balancing adjustments unless the
plans do not indicate duct mounted devices.
F. Vary total system air quantities by adjustment of fan speeds. Provide drive
changes required at no additional expense to the Owner. Vary branch air quantities
by damper regulation.
G. Measure static air pressure conditions on air supply units, including filter and
coil pressure drops, and total pressure across the fan. Make allowances for 50
percent loading of filters.
H. Adjust outside air automatic dampers, outside air, return air, and exhaust dampers
for design conditions in all operating modes as indicated in the sequence of
control.
I. Measure temperature conditions across outside air, return air, and exhaust dampers
to check leakage.
J. Where modulating dampers are provided, take measurements and balance at extreme
conditions and at all intermediate operating conditions specified in the sequence
of control. Balance variable volume systems at maximum air flow rate, full
3.05 SCOPE cooling, and at minimum air flow rate, full heating.
A. Equipment R
e uirin9 Testing, Adjusting, and Balancing (if present
on the project)
1. HVAC Pumps; Boilers; All Air Handling Equipment; All Packaged Heating and/or
Cooling Equipment; All Coil; All Heat Exchangers; Terminal Heat Transfer
Units; Air Terminal Units; Air Inlets and Outlets
3.06 MINIMUM DATA TO BE REPORTED
A. Report (as applicable to the project):
1. Summary Comments:
a. Design versus final performance
b. Notable characteristics of system
C. Summary of outdoor and exhaust flows to indicate amount of building
pressurization
d. Nomenclature used throughout report and test conditions.
B. Electric Motors and drives:
1. Manufacturer; Model/Frame; HP/BHP; Phase, voltage, amperage; nameplate,
actual, no load; RPM; Service factor; Sheave Make/Size/Bore.
2. V -Belt Drives: Identification/location; Required driven RPM; Driven sheave,
diameter and RPM; Belt, size and quantity,
C. Cooling and Heating Coils:
1. Identification/number; Manufacturer
2. Air flow, design and actual
3. Air pressure drop, design and actual
4. Entering and leaving air DB and WB temperature, design and actual
5. Water flow, design and actual (if applicable)
6. Water pressure drop, design and actual (if applicable)
7. Entering and leaving water temperature, design and actual (if applicable)
D. Air Moving Equipment:
1. Manufacturer; Model number; Serial number; Arrangement/Class/Discharge
2. Air flow, specified and actual
3. Inlet; Discharge; Total static pressure (total external), specified and
actual
E. Air Distribution Tests:
1. Air terminal number
2. Room number/location
3. Terminal type
4. Terminal size
5. Area factor
6. Design velocity
7. Design air flow
8. Test (final) velocity
9. Test (final) air flow
10. Percent of design air flow
END OF SECTION
SECTION 230713 - DUCT INSULATION
PART 1 GENERAL
1.01 SECTION INCLUDES
A. Duct insulation.
B. Duct liner.
C. Insulation jackets.
D. Supply, return or exhaust ducts in ceiling spaces.
E. Supply, return or exhaust ducts in interior unconditioned areas.
F. Supply, return or exhaust ducts in exposed locations.
1.02 FIELD CONDITIONS
A. Maintain ambient temperatures and conditions required by manufacturers of
adhesives, mastics, and insulation cements.
B. Maintain temperature during and after installation for minimum period of 24 hours.
PART 2 PRODUCTS
2.01 REQUIREMENTS FOR ALL PRODUCTS OF THIS SECTION
A. Surface Burning Characteristics: Flame spread/Smoke developed index of 25/50,
maximum, when tested in accordance with ASTM E 84, NFPA 255, or UL 723.
B. Manufacturer: Knauf Fiber Glass; Johns Manville Corporation; Owens Corning Corp.;
CertainTeed Corporation.
2.02 GLASS FIBER, FLEXIBLE
A. Insulation: ASTM C 553; flexible, noncombustible blanket.
1. 'K' value: 0.31 at 75 degrees F, when tested in accordance with ASTM C 518.
2. Maximum Service Temperature: 450 degrees F.
3. Maximum Water Vapor Sorption: 5.0 percent by weight.
B. Vapor Barrier Jacket:
1. Kraft paper with glass fiber yarn and bonded to aluminized film.
2. Moisture Vapor Permeability. 0.029 ng/Pa s m (0.02 perm inch), when tested
in accordance with ASTM E 96/E 96M.
3. Secure with pressure sensitive tape.
C. Vapor Barrier Tape:
1. Kraft paper reinforced with glass fiber yarn and bonded to aluminized film,
with pressure sensitive rubber based adhesive.
D. Outdoor Vapor Barrier Mastic:
1. Vinyl emulsion type acrylic or mastic, compatible with insulation, black
color.
E. Tie Wire: Annealed steel, 16 gage.
2.03 DUCT LINER
A. Insulation: Incombustible glass fiber complying with ASTM C 1071; flexible
blanket, rigid board, and preformed round liner board; impregnated surface and
edges coated with acrylic polymer shown to be fungus and bacteria resistant by
testing to ASTM G 21.
1. Apparent Thermal Conductivity. Maximum of 0.31 at 75 degrees F.
2. Service Temperature: Up to 250 degrees F.
3. Rated Velocity on Coated Air Side for Air Erosion: 5,000 fpm, minimum.
4. Minimum Noise Reduction Coefficients:
a. 1/2 inch Thickness: 0.30.
b. 1 inch Thickness: 0.45.
C. 1-1/2 inches Thickness: ess: 0.60.
d. 2 inch Thickness: 0.70.
B. Adhesive: Waterproof, fire -retardant type.
C. Liner Fasteners: Galvanized steel, self-adhesive pad or impact applied with
integral, or press -on head.
PART 3 EXECUTION
3.01 INSTALLATION
A. Install in accordance with manufacturer's instructions and NAIMA National
Insulation Standards.
B. Insulated ducts conveying air below ambient temperature:
1. Provide insulation with vapor barrier jackets.
2. Finish with tape and vapor barrier jacket.
3. Continue insulation through walls, sleeves, hangers, and other duct
penetrations.
4. Insulate entire system including fittings, joints, flanges, fire dampers,
flexible connections, and expansion joints.
C. Insulated ducts conveying air above ambient temperature:
1. Provide with or without standard vapor barrier jacket.
2. Insulate fittings and joints. Where service access is required, bevel and
seal ends of insulation.
D. External Duct Insulation Application:
1. Secure insulation with vapor barrier with wires and seal jacket joints with
vapor barrier adhesive or tape to match jacket.
2. Secure insulation without vapor barrier with staples, tape, or wires.
3. Install without sag on underside of duct. Use adhesive or mechanical
fasteners where necessary to prevent sagging. Lift duct off trapeze hangers
and insert spacers.
4. Seal vapor barrier penetrations by mechanical fasteners with vapor barrier
adhesive.
5. Stop and point insulation around access doors and damper operators to allow
operation without disturbing wrapping.
E. Duct and Plenum Liner Application:
1. Adhere insulation with adhesive for 90 percent coverage.
2. Secure insulation with mechanical liner fasteners. Refer to SMACNA HVAC Duct
Construction Standards - Metal and Flexible for spacing.
3. Seal and smooth joints. Seal and coat transverse joints.
4. Seal liner surface penetrations with adhesive.
5. Duct dimensions indicated are net inside dimensions required for air flow.
Increase duct size to allow for insulation thickness.
3.02 SCHEDULES
A. The Contractor may use any of the following insulating materials, at his option,
provided the selected material meets with the approval of all State, local
authorities and utility company requirements. Verification of compliance of the
selected insulating material and thickness with all State and local codes and
utility company requirements is the sole responsibility of the installing
Contractor.
B. Supply air ducts in ceiling spaces:
1. Flexible Glass Fiber Duct Insulation: 2 inches thick.
2. Flexible Glass Fiber Duct Liner Insulation: 1-1/2 inches thick.
C. Supply, return or exhaust air ducts in crawl spaces, attics or other unconditioned
areas:
1. Flexible Glass Fiber Duct Insulation: 3 inches thick.
D. Supply air ducts exposed in finished areas:
1. Flexible Glass Fiber Duct Liner Insulation: 1-1/2 inches thick.
E. Return or exhaust air ducts exposed in finished areas: None.
END OF SECTION
SECTION 233100 - HVAC DUCTS AND CASINGS
PART 1 GENERAL
1.01 SECTION INCLUDES
A. Metal ductwork.
B. Nonmetal ductwork.
C. Round spiral ductwork
D. Duct cleaning.
1.02 PERFORMANCE REQUIREMENTS
Q S
A. No variation of duct configuration or sizes permitted except by written permission.
Size round ducts installed in place of rectangular ducts in accordance with ASHRAE
table of equivalent rectangular and round ducts, only after approval of the
Engineer.
B. Report all conflicts with structure or other obstructions, prior to fabrication of
any ductwork. Suitable adjustments in the sizes of ducts shall be accommodated
without any additional expense to the Owner.
1.03 SUBMITTALS
A. Shop Drawings: Indicate duct fittings, particulars such as gages, sizes, welds,
and configuration prior to start of work for all systems. No ductwork shall be
fabricated until engineer approved shop drawings have been received by the
Contractor. Identify on ductwork shop drawings any deviations in sizes or shapes
made necessary by the obstructions of other trades.
B. Test Reports: Indicate pressure tests performed. Include date, section tested,
test pressure, and leakage rate, following SMACNA (LEAK) - HVAC Air Duct Leakage
Test Manual.
1.04 REGULATORY REQUIREMENTS
A. Construct ductwork to NFPA 90A, NFPA 90B, and NFPA 96 standards.
B. Code or utility company requirements shall supersede any conflicting requirements
of this Section.
1.05 FIELD CONDITIONS
A. Do not install duct sealants when temperatures are less than those recommended by
sealant manufacturers.
B. Maintain temperatures within acceptable range during and after installation of duct
sealants.
PART 2 PRODUCTS
2.01 MATERIALS
A. Galvanized Steel Ducts: Hot -dipped galvanized steel sheet, ASTM A 653/A 653M FS
Type B, with G90/Z275 coating.
B. Steel Ducts: ASTM A 1008/A 1008M, Designation CS, cold -rolled commercial steel.
C. Aluminum Ducts: ASTM 8 209 (ASTM B 209M); aluminum sheet, alloy 3003-1-114.
Aluminum Connectors and Bar Stock: Alloy 6061-T651 or of equivalent strength.
D. Insulated Flexible Ducts:
1. The Contractor may use any of the following ductwork materials, at his
option, provided the selected material meets with the approval of all State,
local authorities and utility company requirements. Verification of
compliance of the selected ductwork material is the sole responsibility of
the installing Contractor.
2. Two ply vinyl film supported by helically wound spring steel wire; fiberglass
insulation; aluminized vapor barrier film.
a. Pressure Rating: 10 inches WG positive and 1.0 inches WG negative.
b. Maximum Velocity. 4000 fpm.
C. Temperature Range: -10 degrees F to 160 degrees F.
d. Minimum R -Value: 4.2 or greater as required by the applicable energy
codes.
3. Black polymer film supported by helically wound spring steel wire; fiberglass
insulation; aluminized vapor barrier film.
a. Pressure Rating: 4 inches WG positive and 0.5 inches WG negative.
b. Maximum Velocity. 4000 fpm.
C. Temperature Range: -20 degrees F to 175 degrees F.
d. Minimum R -Value: 4.2 or greater as required by the applicable energy
codes.
4. Multiple layers of aluminum laminate supported by helically wound spring
steel wire; fiberglass insulation; aluminized vapor barrier film.
a. Pressure Rating: 10 inches WG positive and 1.0 inches negative.
b. Maximum Velocity. 4000 fpm.
C. Temperature Range: -20 degrees F to 210 degrees F.
d. Minimum R -Value: 4.2 or greater as required by the applicable energy
codes.
5. UL 181, Class 1, aluminum laminate and polyester film with latex adhesive
supported by helically wound spring steel wire; fiberglass insulation;
aluminized vapor barrier film.
a. Pressure Rating: 10 inches WG positive and 1.0 inches WG negative.
b. Maximum Velocity. 4000 fpm.
C. Temperature Range: -20 degrees F to 210 degrees F.
d. Minimum R -Value: 4.2 or greater as required by the applicable energy
codes.
6. UL 181, Class 0, interlocking spiral of aluminum foil; fiberglass insulation;
aluminized vapor barrier film.
a. Pressure Rating: 8 inches WG positive or negative.
b. Maximum Velocity. 5000 fpm.
C. Temperature Range: -20 degrees F to 250 degrees F.
d. Minimum R -Value: 4.2 or greater as required by the applicable energy
codes.
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MECHANICAL
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