section 15053 - Performance Plumbing &

SECTION 23 0500
COMMON WORK FOR HVAC
PART 1: GENERAL
1.1 SUMMARY
A.
Related Documents:
1. AIA Document A201-2007, “General Conditions of the Contract for Construction”, and
Division 01 - General Requirements of this Project Manual apply to all work of this Section.
B.
Section Includes:
1. General administrative and procedural requirements for mechanical work.
2. Materials and installation instructions common to most mechanical systems.
C.
Related Sections:
1. Section 01 7900 - Demonstration and Training.
2. Division 23 sections.
1.2 REFERENCES
A.
Reference Standards: See Section 01 4200.
B.
The following state building codes and standards listed below apply to the Work of this Project:
1. Building Code: 2003 International Building Code w/ 2005 Connecticut Supplement and
2009 Amendment.
2. Plumbing Code: 2003 International Plumbing Code.
3. Mechanical Code: 2003 International Mechanical Code.
4. Electrical Code: 2005 National Electric Code (NFPA 70).
5. Energy Code: 2009 International Energy Conservation Code w/ 2011 Connecticut
Amendment.
6. Fire/Life Safety Code: 2010 Connecticut State Fire Safety Code w/ 2009 Amendment.
7. Accessibility Code: 2003 ICC/ANSI A117.1 Accessible and Useable Buildings & Facilities.
C.
The following standards shall be used where referenced by the following abbreviations:
1. Associated Air Balance Council (AABC)
2. American Conference of Governmental Industrial Hygienists (ACGIH)
3. Air Diffusion Council (ADC)
4. American Gas Association (AGA)
5. American Institute of Architects (AIA)
6. Air Moving and Conditioning Association (AMCA)
7. American National Standards Institute (ANSI)
8. American Petroleum Institute (API)
9. Air Conditioning and Refrigeration Institute (ARI)
10. Association of Safety Engineers (ASE)
11. American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE)
12. American Society of Mechanical Engineers (ASME)
13. American Society of Plumbing Engineers (ASPE)
14. American Society of Testing and Materials (ASTM)
16. American Welding Society (AWS)
17. Canadian Standards Association (CSA)
18. Expansion Joint Manufacturing Association (EJMA)
19. Environmental Protection Agency (EPA)
20. Factory Mutual Insurance Association (FM)
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21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
Federal Specification (FSSC)
Hydraulic Institute Standards (HIS)
Institute of Boiler and Radiator Manufacturers (IBR)
Institute of Electrical and Electronics Engineers (IEEE)
Mechanical Contractors Association of America (MCAA)
National Bureau of Standards (NBS)
National Environmental Balancing Bureau (NEBB)
National Electric Code (NEC)
National Electrical Manufacturers Association (NEMA)
National Fire Protection Association (NFPA)
National Oil Fuel Institute (NOFI)
National Safety Council (NSC)
Occupational Safety and Health Administration (OSHA)
Steel Boiler Industry (SBI)
Sheet Metal and Air Conditioning Contractors National Association (SMACNA)
Steel Tank Institute (STI)
Underwriters' Laboratories (UL)
C.
All materials furnished and all work installed shall comply with the rules and recommendations
of the NFPA, the requirements of the local utility companies, the recommendations of the fire
insurance rating organization having jurisdiction, and the requirements of all governmental
departments having jurisdiction.
D.
The Contractor shall include in the work, without extra cost to the Owner, any labor, materials,
services, apparatus, and drawings in order to comply with all applicable laws, ordinances, rules,
and regulations, whether shown on drawings and/or specified or not.
1.3 DEFINITIONS
A.
FINISHED SPACES: Spaces other than mechanical and electrical equipment rooms, furred
spaces, pipe and duct chases, unheated spaces immediately below roof, spaces above ceilings,
unexcavated spaces, crawlspaces, and tunnels.
B.
EXPOSED, INTERIOR INSTALLATIONS: Exposed to view indoors. Examples include finished
occupied spaces and mechanical equipment rooms.
C.
EXPOSED, EXTERIOR INSTALLATIONS: Exposed to view outdoors or subject to outdoor
ambient temperatures and weather conditions. Examples include rooftop locations.
D.
CONCEALED, INTERIOR INSTALLATIONS: Concealed from view and protected from physical
contact by building occupants. Examples include above ceilings and chases.
E.
CONCEALED, EXTERIOR INSTALLATIONS: Concealed from view and protected from weather
conditions and physical contact by building occupants but subject to outdoor ambient
temperatures. Examples include installations within unheated shelters.
F.
The following are industry abbreviations for plastic materials:
1. CPVC: Chlorinated polyvinyl chloride plastic.
2. PE: Polyethylene plastic.
3. PVC: Polyvinyl chloride plastic.
G.
The following are industry abbreviations for rubber materials:
1. EPDM: Ethylene-propylene-diene terpolymer rubber.
2. NBR: Acrylonitrile-butadiene rubber.
1.4 SYSTEM DESCRIPTION
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A.
Performance Requirements:
1. Intent:
a. It is the intention of specifications and drawings to call for finished work, tested and
ready for operation.
b. Any apparatus, appliance, material, or work not shown on drawings but mentioned in
the specifications, or vice versa, or any incidental accessories necessary to make the
work complete and perfect in all respects and ready for operation as determined by
good trade practice, even if not particularly specified, shall be furnished, delivered,
and installed under their respective divisions without any additional expense to the
Owner.
c. Minor details not usually shown or specified but necessary for proper installation and
operation shall be included in the work as though they were hereinafter shown or
specified.
d. Work under each section shall include giving written notice to the Engineer of any
materials or apparatus believed inadequate or unsuitable; believed to be in violation of
laws, ordinances, rules or regulations of authorities having jurisdiction; or any
necessary items of work believed to be omitted. In the absence of such written
notice, it is mutually agreed that work under each section has included the cost of all
required items for the accepted, satisfactory functioning of the entire system, without
extra compensation.
B.
Drawings:
1. Drawings are diagrammatic and indicate the general arrangement of systems and work
included in the contract. (Do not scale the drawings.) Consult the architectural drawings
and details for exact location of fixtures and equipment; where same are not definitely
located, obtain this information from the Architect.
2. Work under each section shall closely follow drawings in layout of work. Check drawings
of other divisions to verify spaces in which work will be installed. Maintain maximum
headroom; where space conditions appear inadequate, Engineer shall be notified before
proceeding with installations.
3. The Engineer may, without extra charge, make reasonable modifications in the layout as
needed to prevent conflict with work of other trades and/or for proper execution of the
work.
4. Where variances occur between the drawings and specifications or within either of the
documents, the item or arrangement of better quality, greater quantity, or higher cost shall
be included in the contract price. The Engineer shall decide on the item and the manner in
which the work shall be installed.
C.
Permits and Fees:
1. The Contractor shall give all necessary notices; obtain all permits; pay all government and
state sales taxes and fees where applicable, and other costs, including utility connections
or extensions in connection with his work; file all necessary approvals of all governmental
and state departments having jurisdiction; obtain all required certificates of inspections for
his work; and deliver a copy to the Engineer before request for acceptance and final
payment for the work.
A.
Design Requirements:
1. It is the intent of this section of the specifications to establish a standard of quality and
performance characteristics for basic materials and installation methods used in the
building HVAC systems. It is not the intention of this section of the specifications to
define the particular or exact materials or products to be used on this project. Refer to
each individual trade section of the specifications to determine which products are to be
used for systems under that section.
2. All basic materials such as piping, tubing, sheet metal, insulation etc., shall have clearly
printed on the material the manufacturer's name, the material grade, gauge, thickness,
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3.
type, or any other pertinent data to identify and/or specify the required methods of
attachment, welding, etc. Unmarked material will not be accepted.
Wherever a particular piece of equipment, device, or material is specifically indicated on
the drawings by model number, type, series, or other means, that specification shall take
precedence over equipment or materials specified herein. For example, if a particular
valve is specified on the drawings, its specification takes precedence over valve specified
herein.
1.5 SUBMITTALS
A.
Submit under provisions of Section 01 3300:
1. Product Data: Manufacturer's printed literature on each product to be used, including:
a. Transition fittings.
b
Dielectric fittings.
c
Mechanical sleeve seals.
d. Escutcheons.
2. Shop Drawings: Detail major elements, components, and systems of mechanical
equipment and materials in relationship with other systems, installations, and building
components. Show space requirements for installation and access. Indicate if sequence
and coordination of installations are important to efficient flow of the work. Include the
following:
a. Planned piping layout, including valve and specialty locations and valve-steam
movement.
b. Clearances for installing and maintaining insulation.
c.
Clearances for servicing and maintaining equipment, accessories, and specialties,
including space for disassembly required for periodic maintenance.
d. Equipment and accessory service connections and support details.
e. Exterior wall and foundation penetrations.
f.
Fire-rated wall and floor penetrations.
g. Sizes and location of required concrete pads and bases.
h. Scheduling, sequencing, movement, and positioning of large equipment into building
during construction.
i.
Floor plans, elevations, and details to indicate penetrations in floors, walls, and
ceilings and their relationship to other penetrations and installations.
j.
Reflected ceiling plans to coordinate and integrate installation of air outlets and inlets,
light fixtures, communication system components, sprinklers, and other ceiling
mounted items.
k. Access door and access panel locations, with fire-ratings as required to maintain
fireratings of construction, in all locations as required for proper access for
maintenance, adjustment, repair and removal of all equipment and devices.
l.
Scale: Minimum 1/4" = 1'-0" for mechanical rooms.
3. Quality Control Submittals:
a. Certificates: Welding certificates.
4. Contract Closeout Submittals:
a. Project Record Drawings: See Section 01 7780.
b. Operation and Maintenance: Maintenance data for installed products.
c. Warranty Data: Submit warranty documents specified herein.
1.6 DELIVERY, STORAGE, AND HANDLING
A.
Deliver, store, and protect products under provisions of Section 01 6000.
1.7 QUALITY ASSURANCE
A.
Refer to Section 01 4000 - Quality Requirements for additional requirements.
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B.
All materials and apparatus required for the work, except as otherwise specifically indicated,
shall be new and of first-class quality and shall be furnished, delivered, erected, connected, and
finished in every detail and be so selected and arranged as to fit properly into the building
spaces. Where no specific kind or quality of material is given, a first-class standard article as
accepted by industry standards shall be furnished.
C.
The Contractor shall furnish the services of an experienced superintendent who shall be
constantly in charge of the installation of the work together with all skilled workmen, fitters,
metal workers, welders, helpers, and laborers required to unload, transfer, erect, connect up,
adjust, start, operate, and test each system.
D.
Unless otherwise specifically indicated on the drawings or specifications, all equipment and
materials shall be installed with the acceptance of the Engineer and in accordance with the
recommendations of the manufacturer. This includes the performance of such tests as the
manufacturer recommends. Manufacturer’s installation instructions shall be available on the job
site at the time of inspection.
E.
All labor for installation of mechanical systems shall be performed by experienced, skilled
tradesmen under the supervision of a licensed journeyman-foreman. All work shall be of a
quality consistent with good trade practice and shall be installed in a neat, workmanlike manner.
The Engineer reserves the right to reject any work which, in his opinion, has been installed in a
substandard, dangerous, or unserviceable manner. The Contractor shall replace said work in a
satisfactory manner at no extra cost to the Owner.
F.
Pressure vessels shall be constructed in accordance with the current ASME Code. Electrical
equipment shall be UL-listed and approved and shall conform to the current NEC standards.
Gas equipment shall be approved by the AGA and shall conform to current NFPA Codes.
Piping materials, fittings, valves, and accessories shall conform to current ASTM or ANSI
Standard Specifications.
G.
All component parts of each item of equipment or device shall bear the manufacturer,
description, size, type, serial and model number, electrical characteristics, etc., in order to
facilitate maintenance or replacement. The nameplate of a subcontractor or distributor will not
be acceptable.
H.
All welding shall be done by certified welders in accordance with the latest requirements of the
American Welding Society. Welder's certification shall be filed with the General Contractor
before welders start work and shall be available on site at all times.
I.
If equipment or materials are installed before required reviews have been obtained, the
subcontractor responsible for same shall be liable for its removal and replacement, including the
work of the affected trades, at no additional cost to the Owner.
J.
Labeling: All equipment and appliances specified herein shall be listed and labeled by an
approved agency to the relevant standard or standards required by the code. A permanent
factory-applied nameplate(s) shall be affixed to appliances on which shall appear in legible
lettering, the manufacturer’s name or trademark, the model number, serial number, and the seal
of mark of the approved labeling agency. The label shall also include electrical data, absorption
units and fuel-burning units as required by the code.
1.8 PROJECT/SITE CONDITIONS
A.
Surveys and Measurements:
1. Before submitting his bid, the Contractor shall visit the site and shall become thoroughly
familiar with all conditions under which his work will be installed. He will be held
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2.
3.
responsible for any assumptions, omissions, or errors he makes as a result of his failure to
become familiar with the site and the contract documents.
The Contractor shall base all measurements, both horizontal and vertical, from established
bench marks. All work shall agree with these established lines and levels. Verify all
measurements at the site, and check the correctness of same as related to the work.
Should the Contractor discover any discrepancies between actual measurements and
those indicated which prevent following good practice or which interfere with the intent of
the drawings and specifications, he shall notify the Engineer and shall not proceed with
that work until he has received instructions from the Engineer.
1.9 SEQUENCING AND SCHEDULING
A.
Coordination With Other Divisions:
1. All work shall be carried out in conjunction with other trades, and full cooperation shall be
given in order that all work may proceed with a minimum of delay and interference.
Particular emphasis is placed on timely installation of major apparatus and furnishing other
Contractors, especially the General Contractor or Construction Manager, with information
as to openings, chases, sleeves, bases, inserts, equipment locations, panels, etc., required
by other trades.
2. The Contractors are required to examine all of the project drawings and mutually arrange
work so as to avoid interference with the work of other trades. In general, ductwork,
heating and sprinkler piping, and drainage lines take precedence over water, gas, and
electrical conduits. In reflected ceiling layouts, the order of precedence shall be: light
fixtures, sprinkler heads, HVAC diffusers, and miscellaneous electrical devices. The
Engineer shall make final decisions regarding the arrangement of work which cannot be
agreed upon by the Contractors.
3. Where the work of the Contractor will be installed in close proximity to or will interfere with
work of other trades, he shall assist in working out space conditions to make a satisfactory
adjustment.
4. If the work under a section is installed before coordinating with other divisions or sections
or so as to cause interference with work of other sections, the necessary changes to
correct the condition shall be made by the Contractor causing the interference, without
extra charge to the Owner.
1.10 WARRANTY
A.
Warranty all materials and workmanship under provisions of Section 01 6000.
PART 2: PRODUCTS
2.1 MANUFACTURERS
A.
In other Part 2 articles where subparagraph titles below introduce lists, the following
requirements apply for product selection:
1. Acceptable Manufacturers: Subject to compliance with requirements, provide products by
the manufacturers specified.
2.2 PIPE, TUBE, AND FITTINGS
A.
Refer to individual Division 23 piping Sections for pipe, tube, and fitting materials and joining
methods.
B.
Pipe Threads: ASME B1.20.1 for factory-threaded pipe and pipe fittings.
2.3 JOINING MATERIALS
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A.
Refer to individual Division 23 piping Sections for special joining materials not listed below.
B.
Pipe-Flange Gasket Materials: Suitable for chemical and thermal conditions of piping system
contents.
1. ASME B16.21, nonmetallic, flat, asbestos-free, 1/8-inch maximum thickness unless
thickness or specific material is indicated.
a. Full-Face Type: For flat-face, Class 125, cast-iron and cast-bronze flanges.
b. Narrow-Face Type: For raised-face, Class 250, cast-iron and steel flanges.
2. AWWA C110, rubber, flat face, 1/8 inch thick, unless otherwise indicated; and full-face or
ring type, unless otherwise indicated.
C.
Flange Bolts and Nuts: ASME B18.2.1, carbon steel, unless otherwise indicated.
D.
Solder Filler Metals: ASTM B 32, lead-free alloys. Include water-flushable flux according to
ASTM B 813.
E.
Brazing Filler Metals: AWS A5.8, BCuP Series, copper-phosphorus alloys for general-duty
brazing, unless otherwise indicated; and AWS A5.8, BAg1, silver alloy for refrigerant piping,
unless otherwise indicated.
F.
Welding Filler Metals: Comply with AWS D10.12 for welding materials appropriate for wall
thickness and chemical analysis of steel pipe being welded.
G.
Fiberglass Pipe Adhesive: As furnished or recommended by pipe manufacturer.
2.4 DIELECTRIC FITTINGS
A.
Description: Combination fitting of copper alloy and ferrous materials with threaded, solderjoint,
plain, or weld-neck end connections that match piping system materials.
B.
Insulating Material: Suitable for system fluid, pressure, and temperature.
C.
Dielectric Unions: Factory-fabricated, union assembly, for 250-psig minimum working pressure
at 180 deg F.
1. Acceptable Manufacturers:
a. Capitol Manufacturing Co.
b. Central Plastics Company.
c. Eclipse, Inc.
d. Epco Sales, Inc.
e. Hart Industries, International, Inc.
f.
Watts Industries, Inc.; Water Products Div.
g. Zurn Industries, Inc.; Wilkins Div.
D.
Dielectric Flanges: Factory-fabricated, companion-flange assembly, for 150- or 300-psig
minimum working pressure as required to suit system pressures.
1. Acceptable Manufacturers:
a. Capitol Manufacturing Co.
b. Central Plastics Company.
c. Epco Sales, Inc.
d. Watts Industries, Inc.; Water Products Div.
E.
Dielectric-Flange Kits: Companion-flange assembly for field assembly. Include flanges, fullfaceor ring-type neoprene or phenolic gasket, phenolic or polyethylene bolt sleeves, phenolic
washers, and steel backing washers.
1. Acceptable Manufacturers:
a. Advance Products & Systems, Inc.
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2.
b. Calpico, Inc.
c. Central Plastics Company.
d. Pipeline Seal and Insulator, Inc.
Separate companion flanges and steel bolts and nuts shall have 150- or 300-psig
minimum working pressure where required to suit system pressures.
F.
Dielectric Couplings: Galvanized-steel coupling with inert and noncorrosive, thermoplastic
lining; threaded ends; and 300-psig minimum working pressure at 225 deg F.
1. Acceptable Manufacturers:
a. Calpico, Inc.
b. Lochinvar Corp.
G.
Dielectric Nipples: Electroplated steel nipple with inert and noncorrosive, thermoplastic lining;
plain, threaded, or grooved ends; and 300-psig minimum working pressure at 225 deg F.
1. Acceptable Manufacturers:
a. Perfection Corp.
b. Precision Plumbing Products, Inc.
c. Sioux Chief Manufacturing Co., Inc.
2.5 MECHANICAL SLEEVE SEALS
A.
Description: Modular sealing element unit, designed for field assembly, to fill annular space
between pipe and sleeve.
1. Manufacturers:
a. Advance Products & Systems, Inc.
b. Calpico, Inc.
c. Metraflex Co.
d. Pipeline Seal and Insulator, Inc.
2. Sealing Elements: Interlocking links shaped to fit surface of pipe. Include type and
number required for pipe material and size of pipe.
a. EPDM (-40 to 250 deg F): Standard service applications.
b.
Nitrite (-40 to 250 deg F): Hydrocarbon service applications.
c. Silicon (-67 to 400 deg F): High temperature or fire seal applications.
3. Pressure Plates: Plastic. Include two for each sealing element.
a. Provide steel pressure plates for fire and high temperature applications.
4. Connecting Bolts and Nuts: Carbon steel with corrosion-resistant coating of length
required to secure pressure plates to sealing elements. Include one for each sealing
element.
a. Provide 316 stainless steel connecting bolts and nuts in corrosive environments
where chemicals are present.
2.6 SLEEVES
A.
Galvanized-Steel Sheet: 0.0239-inch minimum thickness; round tube closed with welded
longitudinal joint.
B.
Steel Pipe: ASTM A 53, Type E, Grade B, Schedule 40, galvanized, plain ends.
C.
Cast Iron: Cast or fabricated "wall pipe" equivalent to ductile-iron pressure pipe, with plain ends
and integral waterstop, unless otherwise indicated.
D.
Stack Sleeve Fittings: Manufactured, cast-iron sleeve with integral clamping flange. Include
clamping ring and bolts and nuts for membrane flashing.
1. Underdeck Clamp: Clamping ring with set screws.
2.7 ESCUTCHEONS
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A.
Description: Manufactured wall and ceiling escutcheons and floor plates, with an ID to closely
fit around pipe, tube, and insulation of insulated piping and an OD that completely covers
opening.
B.
One-Piece, Deep-Pattern Type: Deep-drawn, box-shaped brass with polished chrome-plated
finish.
C.
One-Piece, Cast-Brass Type: With set screw.
1. Finish: Polished chrome-plated and rough brass.
D.
Split-Casting, Cast-Brass Type: With concealed hinge and set screw.
1. Finish: Polished chrome-plated and rough brass.
E.
One-Piece, Stamped-Steel Type: With spring clips and chrome-plated finish.
F.
Split-Plate, Stamped-Steel Type: With concealed hinge, spring clips, and chrome-plated finish.
G.
One-Piece, Floor-Plate Type: Cast-iron floor plate.
H.
Split-Casting, Floor-Plate Type: Cast brass with concealed hinge and set screw.
2.8 GROUT
A.
Description: ASTM C 1107, Grade B, nonshrink and nonmetallic, dry hydraulic-cement grout.
1. Characteristics: Post-hardening, volume-adjusting, nonstaining, noncorrosive,
nongaseous, and recommended for interior and exterior applications.
2. Design Mix: 5000-psi, 28-day compressive strength.
3. Packaging: Premixed and factory packaged.
PART 3: EXECUTION
3.1 PIPING SYSTEMS - COMMON REQUIREMENTS
A.
Install piping according to the following requirements and Division 15 Sections specifying piping
systems.
B.
Drawing plans, schematics, and diagrams indicate general location and arrangement of piping
systems. Indicated locations and arrangements were used to size pipe and calculate friction
loss, expansion, pump sizing, and other design considerations. Install piping as indicated
unless deviations to layout are approved on Coordination Drawings.
C.
Install piping in concealed locations, unless otherwise indicated and except in equipment rooms
and service areas.
D.
Install piping indicated to be exposed and piping in equipment rooms and service areas at right
angles or parallel to building walls. Diagonal runs are prohibited unless specifically indicated
otherwise.
E.
Install piping above accessible ceilings to allow sufficient space for ceiling panel removal.
F.
Install piping to permit valve servicing.
G.
Install piping at appropriate slopes.
H.
Install piping free of sags and bends.
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I.
Install fittings for changes in direction and branch connections.
J.
Install piping to allow application of insulation.
K.
Select system components with pressure rating equal to or greater than system operating
pressure.
L.
Install escutcheons for penetrations of walls, ceilings, and floors according to the following:
1. New Piping:
a. Piping with Fitting or Sleeve Protruding from Wall: One-piece, deep-pattern type.
b. Chrome-Plated Piping: One-piece, cast-brass type with polished chrome-plated
finish.
c. Insulated Piping: One-piece, stamped-steel type with spring clips.
d. Bare Piping at Wall and Floor Penetrations in Finished Spaces: One-piece, castbrass
type with polished chrome-plated finish.
e. Bare Piping at Ceiling Penetrations in Finished Spaces: One-piece, cast-brass
type with polished chrome-plated finish.
f.
Bare Piping in Unfinished Service Spaces: One-piece, cast-brass type with
roughbrass finish.
g. Bare Piping in Equipment Rooms: One-piece, cast-brass type.
h. Bare Piping at Floor Penetrations in Equipment Rooms: One-piece, floor-plate
type.
M.
Install sleeves for pipes passing through concrete and masonry walls, gypsum-board partitions,
and concrete floor and roof slabs.
1. Cut sleeves to length for mounting flush with both surfaces.
a. Exception: Extend sleeves installed in floors of mechanical equipment areas or
other wet areas 2 inches above finished floor level. Extend cast-iron sleeve fittings
below floor slab as required to secure clamping ring if ring is specified. Penetration
shall be made completely watertight.
2. Install sleeves in new walls and slabs as new walls and slabs are constructed.
3. Install sleeves that are large enough to provide 1/4-inch annular clear space between
sleeve and pipe or pipe insulation. Use the following sleeve materials:
a. Steel Pipe Sleeves: For all pipe sizes penetrating concrete and masonry walls and
floors.
b. Steel Sheet Sleeves: For all pipe sizes , penetrating gypsum-board partitions.
c. Stack Sleeve Fittings: For pipes penetrating floors with membrane waterproofing.
Secure flashing between clamping flanges. Install section of cast-iron soil pipe to
extend sleeve to 2 inches above finished floor level. Refer to Division 7 Section
"Sheet Metal Flashing and Trim" for flashing.
1) Seal space outside of sleeve fittings with grout.
4. Except for underground wall penetrations, seal annular space between sleeve and pipe
or pipe insulation, using joint sealants appropriate for size, depth, and location of joint.
Refer to Division 7 Section "Joint Sealants" for materials and installation.
N.
Aboveground, Exterior-Wall Pipe Penetrations: Seal penetrations using sleeves and
mechanical sleeve seals. Select sleeve size to allow for 1-inch annular clear space between
pipe and sleeve for installing mechanical sleeve seals.
1. Install steel pipe for sleeves smaller than 6 inches in diameter.
2. Install cast-iron "wall pipes" for sleeves 6 inches and larger in diameter.
3. Mechanical Sleeve Seal Installation: Select type and number of sealing elements
required for pipe material and size. Position pipe in center of sleeve. Assemble
mechanical sleeve seals and install in annular space between pipe and sleeve. Tighten
bolts against pressure plates that cause sealing elements to expand and make watertight
seal.
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O.
Underground, Exterior-Wall Pipe Penetrations: Install cast-iron "wall pipes" for sleeves. Seal
pipe penetrations using mechanical sleeve seals. Select sleeve size to allow for 1-inch annular
clear space between pipe and sleeve for installing mechanical sleeve seals.
1. Mechanical Sleeve Seal Installation: Select type and number of sealing elements
required for pipe material and size. Position pipe in center of sleeve. Assemble
mechanical sleeve seals and install in annular space between pipe and sleeve. Tighten
bolts against pressure plates that cause sealing elements to expand and make watertight
seal.
P.
Fire-Barrier Penetrations: Maintain indicated fire rating of walls, partitions, ceilings, and floors
as indicated on architectural drawings at pipe penetrations. Seal pipe penetrations with firestop
materials. Refer to Division 7 Section "Through-Penetration Firestop Systems" for materials.
Q.
Verify final equipment locations for roughing-in.
R.
Refer to equipment specifications in other Sections of these Specifications for roughing-in
requirements.
3.2 PIPING JOINT CONSTRUCTION
A.
Join pipe and fittings according to the following requirements and Division 23 Sections
specifying piping systems.
B.
Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe.
C.
Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before
assembly.
D.
Soldered Joints: Apply ASTM B 813, water-flushable flux, unless otherwise indicated, to tube
end. Construct joints according to ASTM B 828 or CDA's "Copper Tube Handbook," using
leadfree solder alloy complying with ASTM B 32.
E.
Brazed Joints: Construct joints according to AWS's "Brazing Handbook," "Pipe and Tube"
Chapter, using copper-phosphorus brazing filler metal complying with AWS A5.8.
F.
Threaded Joints: Thread pipe with tapered pipe threads according to ASME B1.20.1. Cut
threads full and clean using sharp dies. Ream threaded pipe ends to remove burrs and restore
full ID. Join pipe fittings and valves as follows:
1. Apply appropriate tape or thread compound to external pipe threads unless dry seal
threading is specified.
2. Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded or
damaged. Do not use pipe sections that have cracked or open welds.
G.
Welded Joints: Construct joints according to AWS D10.12, using qualified processes and
welding operators according to Part 1 "Quality Assurance" Article.
H.
Flanged Joints: Select appropriate gasket material, size, type, and thickness for service
application. Install gasket concentrically positioned. Use suitable lubricants on bolt threads.
Fiberglass Bonded Joints: Prepare pipe ends and fittings, apply adhesive, and join according to
pipe manufacturer's written instructions.
I.
3.3 PIPING CONNECTIONS
A.
Make connections according to the following, unless otherwise indicated:
1. Install unions, in piping NPS 2 and smaller, adjacent to each valve and at final connection
to each piece of equipment.
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23 0500-11
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2.
3.
4.
Install flanges, in piping NPS 2-1/2 and larger, adjacent to flanged valves and at final
connection to each piece of equipment.
Dry Piping Systems: Install dielectric unions and flanges to connect piping materials of
dissimilar metals.
Wet Piping Systems: Install dielectric coupling and nipple fittings to connect piping
materials of dissimilar metals.
3.4 EQUIPMENT INSTALLATION - COMMON REQUIREMENTS
A.
Install equipment to allow maximum possible headroom unless specific mounting heights are
not indicated.
B.
Install equipment level and plumb, parallel and perpendicular to other building systems and
components in exposed interior spaces, unless otherwise indicated.
C.
Install HVAC equipment to facilitate service, maintenance, and repair or replacement of
components. Connect equipment for ease of disconnecting, with minimum interference to other
installations. Extend grease fittings to accessible locations.
D.
Install equipment to allow right of way for piping installed at required slope.
3.5 PAINTING
A.
Painting of HVAC systems, equipment, and components is specified in Division 9 Sections
"Interior Painting" and "Exterior Painting."
B.
Damage and Touchup: Repair marred and damaged factory-painted finishes with materials and
procedures to match original factory finish.
3.6 CONCRETE BASES
A.
Concrete Bases: Anchor equipment to concrete base according to equipment manufacturer's
written instructions and according to seismic codes at Project.
1. Construct concrete bases of dimensions indicated, but not less than 4 inches larger in
both directions than supported unit and sufficient for seismic anchoring.
2. Install dowel rods to connect concrete base to concrete floor. Unless otherwise
indicated, install dowel rods on 18-inch centers around the full perimeter of the base.
3.
Install epoxy-coated anchor bolts for supported equipment that extend through concrete
base, and anchor into structural concrete floor.
4. Place and secure anchorage devices. Use supported equipment manufacturer's setting
drawings, templates, diagrams, instructions, and directions furnished with items to be
embedded.
5. Install anchor bolts to elevations required for proper attachment to supported equipment.
6. Install anchor bolts according to anchor-bolt manufacturer's written instructions.
7. Use 3000-psi, 28-day compressive-strength concrete and reinforcement as specified in
Division 3 Section "Cast-in-Place Concrete."
3.7 ERECTION OF METAL SUPPORTS AND ANCHORAGES
A.
Refer to Division 5 sections for structural steel and metal fabrication supports..
B.
Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation
to support and anchor HVAC materials and equipment.
C.
Field Welding: Comply with AWS D1.1.
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Old Saybrook, CT
23 0500-12
August 1, 2013
3.8 ERECTION OF WOOD SUPPORTS AND ANCHORAGES
A.
Cut, fit, and place wood grounds, nailers, blocking, and anchorages to support, and anchor
HVAC materials and equipment.
B.
Select fastener sizes that will not penetrate members if opposite side will be exposed to view or
will receive finish materials. Tighten connections between members. Install fasteners without
splitting wood members.
C.
Attach to substrates as required to support applied loads.
3.9 GROUTING
A.
Mix and install grout for HVAC equipment base bearing surfaces, pump and other equipment
base plates, and anchors.
B.
Clean surfaces that will come into contact with grout.
C.
Provide forms as required for placement of grout.
D.
Avoid air entrapment during placement of grout.
E.
Place grout, completely filling equipment bases.
F.
Place grout on concrete bases and provide smooth bearing surface for equipment.
G.
Place grout around anchors.
H.
Cure placed grout.
3.10 FIRESTOPPING
A.
Apply firestopping to penetrations of fire-rated floor and wall assemblies for HVAC installations
to restore original fire-resistance rating of assembly. Firestopping materials and installation
requirements are specified in Section 07 8400 - Firestopping.
3.11 CLEANING
A.
Clean surfaces in accordance with manufacturer’s recommendations.
3.12 DEMONSTRATION
A.
Comply with requirements of Section 01 7900 - Demonstration and Training.
3.13 PROTECTION
A.
Protect installed products until completion of Project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION
August 2, 2011
Old Saybrook, CT
23 0500-13
August 1, 2013
SECTION 23 0513
COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT
PART 1: GENERAL
1.1 SUMMARY
A.
Related Documents:
1. AIA Document A201-2007, “General Conditions of the Contract for Construction”, and
Division 01 - General Requirements of this Project Manual apply to all work of this Section.
B.
Section Includes:
1. General requirements for single-phase and polyphase, general-purpose, horizontal, small
and medium, squirrel-cage induction motors for use on ac power systems up to 600V and
installed at equipment manufacturer's factory or shipped separately by equipment
manufacturer for field installation.
C.
Related Sections:
1. Division 23 Sections.
1.2 REFERENCES
A.
Reference Standards: See Section 01 4200.
1.3 COORDINATION
A.
Coordinate features of motors, installed units, and accessory devices to be compatible with the
following:
1. Motor controllers.
2. Torque, speed, and horsepower requirements of the load.
3. Ratings and characteristics of supply circuit and required control sequence.
4. Ambient and environmental conditions of installation location.
PART 2: PRODUCTS
2.1 GENERAL MOTOR REQUIREMENTS
A.
Comply with requirements in this Section except when stricter requirements are specified in
HVAC equipment schedules or Sections.
B.
Comply with NEMA MG 1 unless otherwise indicated.
2.2 MOTOR CHARACTERISTICS
A.
Duty: Continuous duty at ambient temperature of 40 deg C and at altitude of 3300 feet above
sea level.
B.
Capacity and Torque Characteristics: Sufficient to start, accelerate, and operate connected
loads at designated speeds, at installed altitude and environment, with indicated operating
sequence, and without exceeding nameplate ratings or considering service factor.
2.3 POLYPHASE MOTORS
A.
Description: NEMA MG 1, Design B, medium induction motor.
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B.
Efficiency: Energy and premium efficient, as defined in NEMA MG 1.
1. "Energy Efficient" for all motors less than 1 HP.
2. "Premium Efficient" for all motors 1 HP and larger, including those furnished as part of
equipment specified in equipment sections. The contractor shall confirm utility company
minimum requirements for incentive programs and provide motors with efficiencies that
meet or exceed the most stringent between NEMA MG-1 and utility company incentive
program requirements. The contractor, at no extra charge to the owner, shall replace any
motor that does not meet the utility company’s incentive program. The efficiency and/or
"NEMA Premium Efficiency" shall be displayed on the motor nameplate and clearly
indicated on the equipment shop drawings submitted for approval.
C.
Service Factor: 1.15.
D.
Multispeed Motors: Variable torque.
1. For motors with 2:1 speed ratio, consequent pole, single winding.
2. For motors with other than 2:1 speed ratio, separate winding for each speed.
E.
Multispeed Motors: Separate winding for each speed.
F.
Rotor: Random-wound, squirrel cage.
G.
Bearings: Re-greasable, shielded, antifriction ball bearings suitable for radial and thrust loading.
H.
Temperature Rise: Match insulation rating.
I.
Insulation: Class F.
J.
Code Letter Designation:
1. Motors 15 HP and Larger: NEMA starting Code F or Code G.
2. Motors Smaller than 15 HP: Manufacturer's standard starting characteristic.
K.
Enclosure Material: Cast iron for motor frame sizes 324T and larger; rolled steel for motor
frame sizes smaller than 324T.
2.4 POLYPHASE MOTORS WITH ADDITIONAL REQUIREMENTS
A.
Motors Used with Reduced-Voltage and Multispeed Controllers: Match wiring connection
requirements for controller with required motor leads. Provide terminals in motor terminal box,
suited to control method.
B.
Motors Used with Variable Frequency Controllers: Ratings, characteristics, and features
coordinated with and approved by controller manufacturer.
1. Windings: Copper magnet wire with moisture-resistant insulation varnish, designed and
tested to resist transient spikes, high frequencies, and short time rise pulses produced by
pulse-width modulated inverters.
2. Energy- and Premium-Efficient Motors, Inverter Ready: Class B temperature rise;
Class F insulation.
3. Thermal Protection: Comply with NEMA MG 1 requirements for thermally protected
motors.
2.5 SINGLE-PHASE MOTORS
A.
Motors larger than 1/20 hp shall be one of the following, to suit starting torque and requirements
of specific motor application:
1. Permanent-split capacitor.
2. Split phase.
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3.
4.
Capacitor start, inductor run.
Capacitor start, capacitor run.
B.
Multispeed Motors: Variable-torque, permanent-split-capacitor type.
C.
Bearings: Prelubricated, antifriction ball bearings or sleeve bearings suitable for radial and
thrust loading.
D.
Motors 1/20 HP and Smaller: Shaded-pole type.
E.
Thermal Protection: Internal protection to automatically open power supply circuit to motor
when winding temperature exceeds a safe value calibrated to temperature rating of motor
insulation. Thermal-protection device shall automatically reset when motor temperature returns
to normal range.
PART 3: EXECUTION - Not Used
END OF SECTION
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August 1, 2013
SECTION 23 0529
HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT
PART 1: GENERAL
1.1 SUMMARY
A.
Related Documents:
1. AIA Document A201-2007, “General Conditions of the Contract for Construction”, and
Division 01 - General Requirements of this Project Manual apply to all work of this Section.
B.
Section Includes:
1. Steel pipe hangers and supports.
2. Trapeze pipe hangers.
3. Metal framing systems.
4. Thermal-hanger shield inserts.
5. Fastener systems.
6. Pipe stands.
7. Equipment supports.
C.
Related Sections:
1. Section 23 0500 Common Work for HVAC.
1.2 REFERENCES
A.
Reference Standards: See Section 01 4200.
1.3 DEFINITIONS
A.
MSS: Manufacturers Standardization Society for The Valve and Fittings Industry Inc.
B.
Terminology: As defined in MSS SP-90, "Guidelines on Terminology for Pipe Hangers and
Supports."
1.4 SYSTEM DESCRIPTION
A.
Performance Requirements:
1. Design supports for multiple pipes, including pipe stands, capable of supporting combined
weight of supported systems, system contents, and test water.
2. Design equipment supports capable of supporting combined operating weight of supported
equipment and connected systems and components.
3. Design seismic-restraint hangers and supports for piping and equipment.
1.5 SUBMITTALS
A.
Submit under provisions of Section 01 3300:
1. Product Data: Manufacturer's printed literature on each product to be used, including:
a. Preparation instructions and recommendations.
b. Storage and handling requirements and recommendations.
c. Installation methods.
2. Shop Drawings: Signed and sealed by a qualified professional engineer. Show fabrication
and installation details and include calculations for the following:
a. Trapeze pipe hangers. Include Product Data for components.
b. Metal framing systems. Include Product Data for components.
c. Pipe stands. Include Product Data for components.
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August 1, 2013
3.
d. Equipment supports.
Quality Control Submittals:
a. Certificates: Welding certificates.
1.6 QUALITY ASSURANCE
A.
Qualifications:
1. Installer Qualifications: An established firm with experience in the installation of the
specified product and have access to all manufacturers' required technical, maintenance,
specifications and related documents.
2. Welding: Qualify procedures and personnel according to the following:
a. AWS D1.1, "Structural Welding Code - Steel."
b. AWS D1.2, "Structural Welding Code - Aluminum."
c. AWS D1.3, "Structural Welding Code - Sheet Steel."
d. AWS D1.4, "Structural Welding Code - Reinforcing Steel."
e. ASME Boiler and Pressure Vessel Code: Section IX.
1.7 DELIVERY, STORAGE AND HANDLING
A.
Deliver, store, and protect materials under provisions of Section 01 6000.
1.8 PROJECT CONDITIONS
A.
Environmental Conditions: Maintain environmental conditions (temperature, humidity, and
ventilation) within limits recommended by manufacturer for optimum results. Do not install
products under environmental conditions outside manufacturer's absolute limits.
PART 2: PRODUCTS
2.1 MANUFACTURERS
A.
In all Part 2 articles where titles below introduce lists, the following requirements apply to
product selection:
1. Acceptable Manufacturers: Subject to compliance with requirements, provide products by
one of the manufacturers specified.
2.2 STEEL PIPE HANGERS AND SUPPORTS
A.
Description: MSS SP-58, Types 1 through 58, factory-fabricated components. Refer to Part 3
"Hanger and Support Applications" Article for where to use specific hanger and support types.
B.
Acceptable Manufacturers:
1. AAA Technology & Specialties Co., Inc.
2. Bergen-Power Pipe Supports.
3.
B-Line Systems, Inc.; a division of Cooper Industries.
4. Carpenter & Paterson, Inc.
5. Empire Industries, Inc.
6. ERICO/Michigan Hanger Co.
7. Globe Pipe Hanger Products, Inc.
8. Grinnell Corp.
9. GS Metals Corp.
10. National Pipe Hanger Corporation.
11. PHD Manufacturing, Inc.
12. PHS Industries, Inc.
13. Piping Technology & Products, Inc.
14. Tolco Inc.
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C.
Galvanized, Metallic Coatings: Hot dipped after fabrication (ASTM A123 and ASTM A153).
D.
Nonmetallic Coatings: Plastic coating, jacket, or liner.
E.
Padded Hangers: Hanger with fiberglass or other pipe insulation pad or cushion for support of
bearing surface of piping.
2.3 TRAPEZE PIPE HANGERS
A.
Description: MSS SP-69, Type 59, shop- or field-fabricated pipe-support assembly made from
structural-steel shapes with MSS SP-58 hanger rods, nuts, saddles, and U-bolts.
2.4 METAL FRAMING SYSTEMS
A.
Acceptable Manufacturers: Subject to compliance with the specifications herein:
1. B-Line Systems, Inc.; a division of Cooper Industries.
2. ERICO/Michigan Hanger Co.; ERISTRUT Div.
3. GS Metals Corp.
4. Power-Strut Div.; Tyco International, Ltd.
5. Thomas & Betts Corporation.
6. Tolco Inc.
7. Unistrut Corp.; Tyco International, Ltd.
B.
Description: MFMA-3, shop- or field-fabricated pipe-support assembly made of steel channels
and other components.
C.
Coatings: Hot-dipped galvanized after fabrication (ASTM A123 and ASTM A153).
D.
Nonmetallic Coatings: Plastic coating, jacket, or liner.
2.5 THERMAL-HANGER SHIELD INSERTS
A.
Acceptable Manufacturers: Subject to compliance with the specifications herein:
1. ERICO/Michigan Hanger Co.
2. PHS Industries, Inc.
3. ShowPipe Shields, Inc.
4. Rilco Manufacturing Company, Inc.
5. Tolco Inc.
6. Value Engineered Products, Inc.
B.
Description: 100-psig- minimum, compressive-strength insulation insert encased in sheet metal
shield.
C.
Insulation-Insert Material for Cold Piping: Water-repellent treated, ASTM C 533, Type I calcium
silicate or ASTM C 552, Type II cellular glass with vapor barrier.
D.
Insulation-Insert Material for Hot Piping: Water-repellent treated, ASTM C 533, Type I calcium
silicate or ASTM C 552, Type II cellular glass.
E.
For Trapeze or Clamped Systems: Insert and shield shall cover entire circumference of pipe.
F.
For Clevis or Band Hangers: Insert and shield shall cover lower 180 degrees of pipe.
G.
Insert Length: Extend 2 inches beyond sheet metal shield for piping operating below ambient
air temperature.
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2.6 FASTENER SYSTEMS
A.
Powder-Actuated Fasteners: Threaded-steel stud, for use in hardened portland cement
concrete with pull-out, tension, and shear capacities appropriate for supported loads and
building materials where used. Verify suitability for use in lightweight concrete slabs and all
labs less than 4 inches thick.
1. Acceptable Manufacturers:
a. Hilti, Inc.
b. ITW Ramset/Red Head.
c. Powers Fasteners.
B.
Mechanical-Expansion Anchors: Insert-wedge-type zinc-coated or stainless steel, for use in
hardened portland cement concrete with pull-out, tension, and shear capacities appropriate for
supported loads and building materials where used.
1. Acceptable Manufacturers:
a. Hilti, Inc.
b. ITW Ramset/Red Head.
c. Powers Fasteners.
2.7 PIPE STAND FABRICATION
A.
Pipe Stands, General: Shop or field-fabricated assemblies made of manufactured
corrosionresistant components to support roof-mounted piping.
B.
Curb-Mounting-Type Pipe Stands: Shop- or field-fabricated pipe support made from
structuralsteel shape, continuous-thread rods, and rollers for mounting on permanent stationary
roof curb.
2.8 EQUIPMENT SUPPORTS
A.
Description: Welded, shop- or field-fabricated equipment support made from structural-steel
shapes.
2.9 MISCELLANEOUS MATERIALS
A.
Structural Steel: ASTM A 36/A 36M, steel plates, shapes, and bars; black and galvanized.
B.
Grout: ASTM C 1107, factory-mixed and -packaged, dry, hydraulic-cement, nonshrink and
nonmetallic grout; suitable for interior and exterior applications.
1. Properties: Nonstaining, noncorrosive, and nongaseous.
2. Design Mix: 5000-psi, 28-day compressive strength.
PART 3: EXECUTION
3.1 HANGER AND SUPPORT APPLICATIONS
A.
Specific hanger and support requirements are specified in Sections specifying piping systems
and equipment.
B.
Comply with MSS SP-69 for pipe hanger selections and applications that are not specified in
piping system Sections.
C.
Use hangers and supports with hot-dipped galvanized, metallic coatings for piping and
equipment that will not have field-applied finish.
D.
Use nonmetallic coatings on attachments for electrolytic protection where attachments are in
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direct contact with copper tubing.
E.
Use padded hangers for piping that is subject to scratching.
F.
Horizontal-Piping Hangers and Supports: Unless otherwise indicated and except as specified in
piping system Sections, install the following types:
1. Adjustable, Steel Clevis Hangers (MSS Type 1): For suspension of noninsulated or
insulated stationary pipes, NPS 1/2 to NPS 30.
2. Yoke-Type Pipe Clamps (MSS Type 2): For suspension of 120 to 450 deg F pipes,
NPS 4 to NPS 16, requiring up to 4 inches of insulation.
3. Carbon- or Alloy-Steel, Double-Bolt Pipe Clamps (MSS Type 3): For suspension of
pipes, NPS 3/4 to NPS 24, requiring clamp flexibility and up to 4 inches of insulation.
4. Steel Pipe Clamps (MSS Type 4): For suspension of cold and hot pipes, NPS 1/2 to
NPS 24, if little or no insulation is required.
5. Pipe Hangers (MSS Type 5): For suspension of pipes, NPS 1/2 to NPS 4, to allow
offcenter closure for hanger installation before pipe erection.
6. Adjustable, Swivel Split- or Solid-Ring Hangers (MSS Type 6): For suspension of
noninsulated stationary pipes, NPS 3/4 to NPS 8.
7. Adjustable, Steel Band Hangers (MSS Type 7): For suspension of noninsulated
stationary pipes, NPS 1/2 to NPS 8.
8. Adjustable Band Hangers (MSS Type 9): For suspension of noninsulated stationary
pipes, NPS 1/2 to NPS 8.
9. Adjustable, Swivel-Ring Band Hangers (MSS Type 10): For suspension of noninsulated
stationary pipes, NPS 1/2 to NPS 2.
10. Split Pipe-Ring with or without Turnbuckle-Adjustment Hangers (MSS Type 11): For
suspension of noninsulated stationary pipes, NPS 3/8 to NPS 8.
11. Extension Hinged or 2-Bolt Split Pipe Clamps (MSS Type 12): For suspension of
noninsulated stationary pipes, NPS 3/8 to NPS 3.
12. U-Bolts (MSS Type 24): For support of heavy pipes, NPS 1/2 to NPS 30.
13. Clips (MSS Type 26): For support of insulated pipes not subject to expansion or
contraction.
14. Pipe Saddle Supports (MSS Type 36): For support of pipes, NPS 4 to NPS 36, with steel
pipe base stanchion support and cast-iron floor flange.
15. Pipe Stanchion Saddles (MSS Type 37): For support of pipes, NPS 4 to NPS 36, with
steel pipe base stanchion support and cast-iron floor flange and with U-bolt to retain pipe.
16. Adjustable, Pipe Saddle Supports (MSS Type 38): For stanchion-type support for pipes,
NPS 2-1/2 to NPS 36, if vertical adjustment is required, with steel pipe base stanchion
support and cast-iron floor flange.
17. Single Pipe Rolls (MSS Type 41): For suspension of pipes, NPS 1 to NPS 30, from 2
rods if longitudinal movement caused by expansion and contraction might occur.
18. Adjustable Roller Hangers (MSS Type 43): For suspension of pipes, NPS 2-1/2 to
NPS 20, from single rod if horizontal movement caused by expansion and contraction
might occur.
19. Complete Pipe Rolls (MSS Type 44): For support of pipes, NPS 2 to NPS 42, if
longitudinal movement caused by expansion and contraction might occur but vertical
adjustment is not necessary.
20. Pipe Roll and Plate Units (MSS Type 45): For support of pipes, NPS 2 to NPS 24, if
small horizontal movement caused by expansion and contraction might occur and vertical
adjustment is not necessary.
21. Adjustable Pipe Roll and Base Units (MSS Type 46): For support of pipes, NPS 2 to
NPS 30, if vertical and lateral adjustment during installation might be required in addition
to expansion and contraction.
G.
Vertical-Piping Clamps: Unless otherwise indicated and except as specified in piping system
Sections, install the following types:
1. Extension Pipe or Riser Clamps (MSS Type 8): For support of pipe risers, NPS 3/4 to
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2.
NPS 20.
Carbon- or Alloy-Steel Riser Clamps (MSS Type 42): For support of pipe risers, NPS 3/4
to NPS 20, if longer ends are required for riser clamps.
H.
Hanger-Rod Attachments: Unless otherwise indicated and except as specified in piping system
Sections, install the following types:
1. Steel Turnbuckles (MSS Type 13): For adjustment up to 6 inches for heavy loads.
2. Steel Clevises (MSS Type 14): For 120 to 450 deg F piping installations.
3. Swivel Turnbuckles (MSS Type 15): For use with MSS Type 11, split pipe rings.
4. Malleable-Iron Sockets (MSS Type 16): For attaching hanger rods to various types of
building attachments.
5. Steel Weldless Eye Nuts (MSS Type 17): For 120 to 450 deg F piping installations.
I.
Building Attachments: Unless otherwise indicated and except as specified in piping system
Sections, install the following types:
1. Steel or Malleable Concrete Inserts (MSS Type 18): For upper attachment to suspend
pipe hangers from concrete ceiling.
2. Top-Beam C-Clamps (MSS Type 19): For use under roof installations with bar-joist
construction to attach to top flange of structural shape.
3. Side-Beam or Channel Clamps (MSS Type 20): For attaching to bottom flange of beams,
channels, or angles.
4. Center-Beam Clamps (MSS Type 21): For attaching to center of bottom flange of beams.
5. Welded Beam Attachments (MSS Type 22): For attaching to bottom of beams if loads
are considerable and rod sizes are large.
6. C-Clamps (MSS Type 23): For structural shapes.
7. Top-Beam Clamps (MSS Type 25): For top of beams if hanger rod is required tangent to
flange edge.
8. Side-Beam Clamps (MSS Type 27): For bottom of steel I-beams.
9. Steel-Beam Clamps with Eye Nuts (MSS Type 28): For attaching to bottom of steel Ibeams
for heavy loads.
10. Linked-Steel Clamps with Eye Nuts (MSS Type 29): For attaching to bottom of steel
Ibeams for heavy loads, with link extensions.
11. Malleable Beam Clamps with Extension Pieces (MSS Type 30): For attaching to
structural steel.
12. Welded-Steel Brackets: For support of pipes from below, or for suspending from above
by using clip and rod. Use one of the following for indicated loads:
a. Light (MSS Type 31): 750 lb.
b. Medium (MSS Type 32): 1500 lb.
c. Heavy (MSS Type 33): 3000 lb.
13. Side-Beam Brackets (MSS Type 34): For sides of steel or wooden beams.
14. Plate Lugs (MSS Type 57): For attaching to steel beams if flexibility at beam is required.
15. Horizontal Travelers (MSS Type 58): For supporting piping systems subject to linear
horizontal movement where headroom is limited.
J.
Saddles and Shields: Unless otherwise indicated and except as specified in piping system
Sections, install the following types:
1. Steel Pipe-Covering Protection Saddles (MSS Type 39): For supporting insulated pipe
without vapor barrier, fill interior voids with insulation that matches adjoining insulation.
2. Protection Shields (MSS Type 40): Of length recommended in writing by manufacturer to
prevent crushing insulation.
3. Thermal-Hanger Shield Inserts: For supporting insulated pipe with vapor barrier.
K.
Spring Hangers and Supports: Unless otherwise indicated and except as specified in piping
system Sections, provide per Division 15 Section "Vibration and Seismic Controls for HVAC
Piping and Equipment."
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L.
Comply with MSS SP-69 for trapeze pipe hanger selections and applications that are not
specified in piping system Sections.
M.
Comply with MFMA-102 for metal framing system selections and applications that are not
specified in piping system Sections.
N.
Use powder-actuated fasteners or mechanical-expansion anchors instead of building
attachments where required in concrete construction. Verify suitability for use in lightweight
concrete slabs and all slabs less than 4 inches thick.
3.2 HANGER AND SUPPORT INSTALLATION
A.
Steel Pipe Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Install hangers,
supports, clamps, and attachments as required to properly support piping from building
structure.
B.
Trapeze Pipe Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Arrange for
grouping of parallel runs of horizontal piping and support together on field-fabricated trapeze
pipe hangers.
1. Pipes of Various Sizes: Support together and space trapezes for smallest pipe size or
install intermediate supports for smaller diameter pipes as specified above for individual
pipe hangers.
2. Field fabricate from ASTM A 36/A 36M, steel shapes selected for loads being supported.
Weld steel according to AWS D1.1.
C.
Metal Framing System Installation: Arrange for grouping of parallel runs of piping and support
together on field-assembled metal framing systems.
D.
Thermal-Hanger Shield Installation: Install in pipe hanger or shield for insulated piping.
E.
Fastener System Installation:
1. Install powder-actuated fasteners for use in lightweight concrete or concrete slabs less
than 4 inches thick in concrete after concrete is placed and completely cured. Use
operators that are licensed by powder-actuated tool manufacturer. Install fasteners
according to powder-actuated tool manufacturer's operating manual.
2. Install mechanical-expansion anchors in concrete after concrete is placed and completely
cured. Install fasteners according to manufacturer's written instructions.
3. Verify suitability of fasteners in lightweight concrete slabs and all concrete slabs less than
4 inches thick.
F.
Pipe Stand Installation:
1. Curb-Mounting-Type Pipe Stands: Assemble components or fabricate pipe stand and
mount on permanent, stationary roof curb. Refer to Division 7 Section "Roof
Accessories" for curbs. Seismically restrain assembly to structure.
G.
Install hangers and supports complete with necessary inserts, bolts, rods, nuts, washers, and
other accessories.
H.
Equipment Support Installation: Fabricate from welded-structural-steel shapes.
I.
Install hangers and supports to allow controlled thermal and seismic movement of piping
systems, to permit freedom of movement between pipe anchors, and to facilitate action of
expansion joints, expansion loops, expansion bends, and similar units.
J.
Install lateral bracing with pipe hangers and supports to prevent swaying.
Phase I Buildings
Old Saybrook, CT
23 0529-7
August 1, 2013
K.
Install building attachments within concrete slabs or attach to structural steel. Install additional
attachments at concentrated loads, including valves, flanges, and strainers, NPS 2-1/2 and
larger and at changes in direction of piping. Install concrete inserts before concrete is placed;
fasten inserts to forms and install reinforcing bars through openings at top of inserts.
L.
Load Distribution: Install hangers and supports so piping live and dead loads and stresses from
movement will not be transmitted to connected equipment.
M.
Pipe Slopes: Install hangers and supports to provide indicated pipe slopes and so maximum
pipe deflections allowed by ASME B31.1 (for power piping) and ASME B31.9 (for building
services piping) are not exceeded.
N.
Insulated Piping: Comply with the following:
1. Attach clamps and spacers to piping.
a. Piping Operating above Ambient Air Temperature: Clamp may project through
insulation.
b. Piping Operating below Ambient Air Temperature: Use thermal-hanger shield
insert with clamp sized to match OD of insert.
c. Do not exceed pipe stress limits according to ASME B31.1 for power piping and
ASME B31.9 for building services piping.
2. Install MSS SP-58, Type 39, galvanized protection saddles if insulation without vapor
barrier is indicated. Fill interior voids with insulation that matches adjoining insulation.
a. Option: Thermal-hanger shield inserts may be used. Include steel weightdistribution
plate for pipe NPS 4 and larger if pipe is installed on rollers.
3. Install MSS SP-58, Type 40, galvanized protective shields on cold piping with vapor
barrier. Shields shall span an arc of 180 degrees or per thermal hanger insert
manufacturer’s recommendations.
a. Option: Thermal-hanger shield inserts may be used. Include steel weightdistribution
plate for pipe NPS 4 and larger if pipe is installed on rollers.
4. Shield Dimensions for Pipe: Not less than the following or per thermal hanger insert
manufacturer’s recommendations:
a. NPS 1/4 to NPS 3-1/2: 12 inches long and 0.048 inch thick.
b.
NPS 4: 12 inches long and 0.06 inch thick.
c. NPS 5 and NPS 6: 18 inches long and 0.06 inch thick.
d. NPS 8 to NPS 14: 24 inches long and 0.075 inch thick.
e. NPS 16 to NPS 24: 24 inches long and 0.105 inch thick.
5. Pipes NPS 8 and Larger: Include wood inserts.
6. Insert Material: Length at least as long as protective shield.
7. Thermal-Hanger Shields: Install with insulation same thickness as piping insulation.
3.3 EQUIPMENT SUPPORTS
A.
Fabricate structural-steel stands to suspend equipment from structure overhead or to support
equipment above floor.
B.
Grouting: Place grout under supports for equipment and make smooth bearing surface.
C.
Provide lateral bracing, to prevent swaying, for equipment supports.
3.4 METAL FABRICATIONS
A.
Cut, drill, and fit miscellaneous metal fabrications for trapeze pipe hangers and equipment
supports.
B.
Fit exposed connections together to form hairline joints. Field weld connections that cannot be
shop welded because of shipping size limitations.
Phase I Buildings
Old Saybrook, CT
23 0529-8
August 1, 2013
C.
Field Welding: Comply with AWS D1.1 procedures for shielded metal arc welding, appearance
and quality of welds, and methods used in correcting welding work, and with the following:
1. Use materials and methods that minimize distortion and develop strength and corrosion
resistance of base metals.
2. Obtain fusion without undercut or overlap.
3. Remove welding flux immediately.
4. Finish welds at exposed connections so no roughness shows after finishing and contours
of welded surfaces match adjacent contours.
3.5 ADJUSTING
A.
Hanger Adjustments: Adjust hangers to distribute loads equally on attachments and to achieve
indicated slope of pipe.
B.
Trim excess length of continuous-thread hanger and support rods to 1-1/2 inches.
3.6 PAINTING
A.
Touch Up: Clean field welds and abraded areas of shop paint. Paint exposed areas
immediately after erecting hangers and supports. Use same materials as used for shop
painting. Comply with SSPC-PA 1 requirements for touching up field-painted surfaces.
1. Apply paint by brush or spray to provide minimum dry film thickness of 2.0 mils.
B.
Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply
galvanizing-repair paint to comply with ASTM A 780.
3.7 PROTECTION
A.
Protect installed products until completion of Project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION
Phase I Buildings
Old Saybrook, CT
23 0529-9
August 1, 2013
SECTION 23 0553
IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT
PART 1: GENERAL
1.1 SUMMARY
A.
Related Documents:
1. AIA Document A201-2007, “General Conditions of the Contract for Construction”, and
Division 01 - General Requirements of this Project Manual apply to all work of this Section.
B.
Section Includes:
1. Equipment labels.
2. Access panel and door labels.
3. Pipe labels.
4. Duct labels.
5. Stencils.
6. Valve tags.
7. Valve schedules.
8. Warning tags.
9. Air terminal location tags.
C.
Related Sections:
1. Section 23 0500 Common Work for HVAC.
1.2 REFERENCES
A.
Reference Standards: See Section 01 4200.
1.3 SUBMITTALS
A.
Submit under provisions of Section 01 3300:
1. Product Data: Manufacturer's printed literature on each product to be used, including:
a. Preparation instructions and recommendations.
b. Storage and handling requirements and recommendations.
c. Installation methods.
2. Schedules:
a. Equipment Label Schedule: Include a listing of all equipment to be labeled with the
proposed content for each label. Furnish extra copies, in addition to mounted copies,
for inclusion in maintenance manuals. Provide one copy on electronic media, type
specified by Owner.
b. Valve numbering scheme.
c. Valve Schedules: Provide separate schedule for each piping system. Furnish extra
copies, in addition to mounted copies, for inclusion in maintenance manuals. Provide
one copy on electronic media, type specified by Owner.
3. Selection Samples: For color, letter style, and graphic representation required for each
identification material and device.
1.4 QUALITY ASSURANCE
A.
Product Requirements:
1. ASME Compliance: Comply with ASME A13.1, "Scheme for the Identification of Piping
Systems," for letter size, length of color field, colors, and viewing angles of identification
devices or piping. Comply with recommendations in ASME A13.1 for labeling of equipment
and ducts.
Phase I Buildings
Old Saybrook, CT
23 0553-1
August 1, 2013
1.5 DELIVERY, STORAGE AND HANDLING
A.
Deliver, store, and protect materials under provisions of Section 01 6000.
1.6 PROJECT CONDITIONS
A.
Environmental Conditions: Maintain environmental conditions (temperature, humidity, and
ventilation) within limits recommended by manufacturer for optimum results. Do not install
products under environmental conditions outside manufacturer's absolute limits.
1.7 COORDINATION
A.
Coordinate installation of identifying devices with completion of covering and painting of
surfaces where devices are to be applied.
B.
Coordinate installation of identifying devices with locations of access panels and doors.
C.
Install identifying devices before installing acoustical ceilings and similar concealment.
D.
Coordinate names, abbreviations, and other designations used in mechanical identification with
owner’s desired identification scheme, regardless of numbering indicated on the drawings and
specifications. Coordinate owner’s desired identification scheme with ASME and OSHA
Standards.
E.
Coordinate with Architect, locations of all identifying devices in public view areas.
PART 2: PRODUCTS
2.1 EQUIPMENT LABELS
A.
Plastic Labels for Equipment:
1. Material and Thickness: Multilayer, multicolor, plastic labels for mechanical engraving,
1/16 inch thick, and having predrilled holes for attachment hardware.
2. Letter Color: White.
3. Background Color: Blue.
4. Maximum Temperature: Able to withstand temperatures up to 160 deg F.
5. Minimum Label Size: Length and width vary for required label content, but not less than
2-1/2 by 3/4 inch.
6. Minimum Letter Size: 1/4 inch for name of units if viewing distance is less than 24
inches, 1/2 inch for viewing distances up to 72 inches, and proportionately larger lettering
for greater viewing distances. Include secondary lettering two-thirds to three-fourths the
size of principal lettering.
7. Fasteners: Stainless-steel rivets or self-tapping screws.
8. Adhesive: Contact-type permanent adhesive, compatible with label and with substrate.
B.
Equipment Label Content: Include equipment's Drawing designation and owner specified
unique equipment number, Drawing numbers where equipment is indicated (plans, details, and
schedules), plus the Specification Section number and title where equipment is specified.
C.
Equipment Label Schedule: For each item of equipment to be labeled, on 8-1/2-by-11-inch
bond paper. Tabulate equipment identification number and identify Drawing numbers where
equipment is indicated (plans, details, and schedules), plus the Specification Section number
and title where equipment is specified. Equipment schedule shall be included in operation and
maintenance data.
2.2 PIPE LABELS
Phase I Buildings
Old Saybrook, CT
23 0553-2
August 1, 2013
A.
General Requirements for Manufactured Pipe Labels: Preprinted, color-coded, with lettering
indicating service, and showing flow direction. Color shall comply with ASME A13.1 unless
otherwise indicated.
B.
Pretensioned Pipe Markers: Precoiled semirigid plastic formed to cover circumference of pipe
and to attach to pipe without fasteners or adhesive.
1. For Pipes Equal or Greater Than 6-Inches Outside Diameter with Insulation: Partial
cover of circumference with a minimum length and width three times greater than the
total lettering size, or shaped pipe markers.
2. For Pipes Less than 6-Inches Outside Diameter with Insulation: Full cover of
circumference.
C.
Pipe Label Contents: Include identification of piping service using same designations or
abbreviations as used on Drawings, pipe size, and an arrow indicating flow direction.
1. Flow-Direction Arrows: Integral with piping system service lettering to accommodate both
directions, or as separate unit on each pipe label to indicate flow direction.
2. Lettering Size: Manufacturer’s standard preprinted captions appropriate for piping
systems indicated or 1-1/2 inches high, if requested by owner.
D.
Use metal labels for bare pipes conveying fluids at temperatures of 125 deg F or higher.
2.3 DUCT LABELS
A.
General Requirements for Manufactured Duct Labels: Preprinted, color-coded, with lettering
indicating service and showing flow direction.
B.
Adhesive Duct Markers: Plastic with adhesive backing and peel off covering to attach to pipe
without fasteners.
C.
Maximum Temperature: Able to withstand temperatures up to 160 deg F.
D.
Minimum Label Size: Length and width vary for required label content, but not less than 2-1/2
by 3/4 inch.
E.
Minimum Letter Size: 1/4 inch for name of units if viewing distance is less than 24 inches, 1/2
inch for viewing distances up to 72 inches, and proportionately larger lettering for greater
viewing distances. Include secondary lettering two-thirds to three-fourths the size of principal
lettering.
F.
Adhesive: Contact-type permanent adhesive, compatible with label and with substrate.
G.
Duct Label Contents: Include identification of duct service using same designations or
abbreviations as used on Drawings, duct size, and an arrow indicating flow direction.
1. Flow-Direction Arrows: Integral with duct system service lettering to accommodate both
directions, or as separate unit on each duct label to indicate flow direction.
2. Quantity of airflow and airflow type (i.e., supply return, exhaust outdoor air, etc.).
3. Lettering Size: At least 1-1/2 inches high.
2.4 VALVE TAGS
A.
Valve Tags: Stamped or engraved with 1/4-inch letters for piping system abbreviation and 1/2inch numbers, with numbering scheme approved by owner.
1. Tag Material: Brass, 0.032-inch minimum thickness, and having predrilled or stamped
holes for attachment hardware.
2. Fasteners: Brass beaded chain.
Phase I Buildings
Old Saybrook, CT
23 0553-3
August 1, 2013
B.
Valve Schedules: For each piping system, on 8-1/2-by-11-inch bond paper. Tabulate valve
number, piping system, system abbreviation (as shown on valve tag), location of valve (room or
space), normal-operating position (open, closed, or modulating), and variations for identification.
Mark valves for emergency shutoff and similar special uses.
1. Valve-tag schedule shall be included in operation and maintenance data.
2. Valve-Schedule Frames: Glazed display frame for removable mounting on masonry
walls for each page of valve schedule. Include mounting screws.
3. Frame: Extruded aluminum.
4. Glazing: ASTM C 1036, Class 1, Glazing Quality B, 2.5-mm, single-thickness glass.
C.
Schedule on Electronic Media:
1. In addition to the framed paper schedule, provide valve schedule on electronic media,
type specified by owner, and identified points on as-built drawings.
2.5 WARNING TAGS
A.
Warning Tags: Preprinted or partially preprinted, accident-prevention tags, of plasticized card
stock with matte finish suitable for writing.
1. Size: Approximately 4 by 7 inches.
2. Fasteners: Brass grommet and wire.
3. Nomenclature: Large-size primary caption such as "DANGER," "CAUTION," or "DO NOT
OPERATE."
4. Color: Yellow background with black lettering.
2.6 AIR TERMINAL LOCATION TAGS
A.
Acceptable Manufacturer:
1. Brother "TZ" or equivalent.
B.
Labels custom printed on self-stick clear labels.
1. Size: 3/4" clear.
2. Lettering: 1/2" black.
3. Nomenclature: Full air valve number.
PART 3: EXECUTION
3.1 PREPARATION
A.
Clean piping and equipment surfaces of substances that could impair bond of identification
devices, including dirt, oil, grease, release agents, and incompatible primers, paints, and
encapsulants.
3.2 EQUIPMENT LABEL INSTALLATION
A.
Install or permanently fasten labels on each major item of mechanical equipment. Major
equipment includes, but is not limited to, the following:
1. Fuel-burning units, including boilers, furnaces, heaters, and absorption units.
2. Pumps, compressors, chillers, condensers, and similar motor-driven units.
3. Heat exchangers, coils, evaporators, cooling towers, heat recovery units, and similar
equipment.
4. Fans, blowers, primary balancing dampers, variable air volume boxes, and mixing boxes.
5. Packaged HVAC central-station and zone-type units.
B.
Locate equipment labels where accessible and visible.
C.
Metal Label Content: Provide the following equipment information on metal labels only:
Phase I Buildings
Old Saybrook, CT
23 0553-4
August 1, 2013
1.
2.
3.
4.
5.
D.
Equipments drawing designation AND owner specified unique equipment identification
number.
Drawing numbers where equipment is located or specified (floor plans and schedules).
Specification section equipment is specified.
Manufacturer, model name and number, serial number(s).
Labels of equipment listings by testing agencies (e.g., UL listings).
Plastic Label Content: Provide the following equipment information on plastic labels:
1. Capacity, operating and power characteristics (e.g., entering and leaving conditions,
speed, pressure drop).
2. Operating instruction and warnings.
3. Safety warnings.
4. Access panels and doors.
3.3 PIPE LABEL INSTALLATION
A.
Piping Color-Coding: Painting of piping is specified in Division 9 Section "High-Performance
Coatings."
B.
Manufactured Pipe Labels: Provided on all piping except piping in return air plenums.
C.
Locate pipe labels where piping is exposed or above accessible ceilings in finished spaces;
machine rooms; accessible maintenance spaces such as shafts, tunnels, and plenums; and
exterior exposed locations as follows:
1. Near each valve and control device.
2. Near each branch connection, excluding short takeoffs for fixtures and terminal units.
Where flow pattern is not obvious, mark each pipe at branch.
3. Near penetrations through walls, floors, ceilings, and inaccessible enclosures.
4. At access doors, manholes, and similar access points that permit view of concealed
piping.
5. Near major equipment items and other points of origination and termination.
6. Spaced at maximum intervals of 50 feet along each run. Reduce intervals to 25 feet in
areas of congested piping and equipment.
D.
Pipe Label Color Schedule: According to ASME 13.1, unless otherwise specified.
3.4 DUCT LABEL INSTALLATION
A.
Install self-adhesive duct labels with permanent adhesive on air ducts in the following color
codes:
1. Blue: For cold-air supply ducts.
2. Yellow: For hot-air supply ducts.
3. Green: For exhaust-, outside-, relief-, return-, and mixed-air ducts.
4. ASME A13.1 Colors and Designs: For hazardous material exhaust.
5. Background Color: White.
B.
Locate labels near points where ducts enter into concealed spaces and at maximum intervals of
50 feet in each space where ducts are exposed or concealed by removable ceiling system.
3.5 VALVE-TAG INSTALLATION
A.
Install tags on valves and control devices in piping systems, with the following exceptions:
check valves; valves within factory-fabricated equipment units; shutoff valves; faucets; and
HVAC terminal devices and similar roughing-in connections of end-use fixtures and units. List
tagged valves in a valve schedule.
Phase I Buildings
Old Saybrook, CT
23 0553-5
August 1, 2013
B.
Valve-Tag Application Schedule: Tag valves according to size, shape, and color scheme and
with captions similar to those indicated in the following subparagraphs:
1. Valve-Tag Size and Shape: 1-1/2 inches, round.
2. Valve-Tag Color: Natural.
3. Letter Color: Black.
3.6 WARNING-TAG INSTALLATION
A.
Write required message on, and attach warning tags to, equipment and other items where
required.
3.7 VALVE-SCHEDULE INSTALLATION
A.
Mount valve schedule on wall in accessible location in each major equipment room.
3.8 AIR TERMINAL LOCATION TAGS
A.
Air Terminals: Provide one label for each of the following types of air terminals:
1. Air Terminals: Supply, return.
2. Air Valve Terminals: Supply, return and exhaust.
3. Reheat Coils: Electric, steam, hot water.
4. Fan-Coil Units: Heating, cooling, combined.
5. Filter banks.
B.
Affix to ceiling grid nearest to directly below the air volume control box in a discrete manner.
C.
Label with an arrow pointing to the optimal tile to be lifted for access.
3.9 ADJUSTING
A.
Relocate mechanical identification materials and devices that have become visually blocked by
other work.
3.10 CLEANING
A.
Clean faces of mechanical identification devices and glass frames of valve schedules.
3.11 PROTECTION
A.
Protect installed products until completion of Project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION
Phase I Buildings
Old Saybrook, CT
23 0553-6
August 1, 2013
SECTION 23 0700
HVAC INSULATION
PART 1: GENERAL
1.1 SUMMARY
A.
Related Documents:
1. AIA Document A201-2007, “General Conditions of the Contract for Construction”, and
Division 01 - General Requirements of this Project Manual apply to all work of this Section.
B.
Section Includes:
1. Insulating the following duct services:
a. Indoor, concealed supply and outdoor air.
b. Indoor, exposed supply and outdoor air.
c. Indoor, concealed return located in unconditioned space.
d. Indoor, exposed return located in unconditioned space.
e. Indoor, concealed, Type I, commercial, kitchen hood exhaust.
f.
Indoor, exposed, Type I, commercial, kitchen hood exhaust.
g. Indoor, concealed oven, warewash, and shower/toilet exhaust in unconditioned
spaces.
h. Indoor, exposed oven, warewash, and shower/toilet exhaust in unconditioned spaces.
i.
Indoor, concealed exhaust between isolation damper and penetration of building
exterior.
j.
Indoor, exposed exhaust between isolation damper and penetration of building
exterior.
k. Outdoor, concealed supply and return.
l.
Outdoor, exposed supply and return.
m. Supply diffuser plenums 4 sq. ft. and larger.
n. Return/exhaust register/grille plenums 4 sq. ft. and larger in unconditioned spaces.
C.
Related Sections:
1. Section 23 0500 - Common Work for HVAC.
2. Section 23 3100 - HVAC Ducts.
1.2 REFERENCES
A.
Reference Standards: See Section 01 4200.
1.3 DEFINITIONS
A.
CONDITIONED SPACE: An area, room ceiling space/plenum or space within the building
structure being heated or cooled (by direct expansion or chilled water) or both, by equipment or
appliance and is not subject to outdoor ambient conditions.
B.
UNCONDITIONED SPACE: An area, room or space within the building structure not being
conditioned and subject to outdoor ambient conditions. Select Examples: above ceiling spaces
in ducted return systems, mechanical and electrical rooms, crawl spaces, tunnels, plenums or
rooms connecting to the outside.
C.
CONCEALED DUCTS/PIPES: Ducts/pipes not visible within the room they are located, after the
project is completed.
D.
EXPOSED DUCTS/PIPES: Ducts/pipes visible within the room they are located, after the
project is completed.
Phase I Buildings
Old Saybrook, CT
23 0700-1
August 1, 2013
E.
CEILING SPACE / PLENUM: An enclosed portion of the building structure, other than an
occupiable space being conditioned, that is designed to allow air movement, and thereby serve
as part of an air distribution system.
F.
PLENUM: Part of the duct system connected to diffusers, registers, grilles, louvers for air
movement applications.
G.
MOISTURE EXHAUST: Exhaust air that carries a higher than ambient level of
moisture/humidity in the stream.
1. Examples (including, but not limited to): dishwasher, shower areas, wash areas (clothing,
process, etc.), hospital equipment/devices cleaning and sterilizing.
1.4 SUBMITTALS
A.
Submit under provisions of Section 01 3300:
1. Product Data: For each type of product indicated. Include thermal conductivity, water-vapor
permeance thickness, and jackets (both factory-and field-applied if any).
2. Shop Drawings: Include plans, elevations, sections, details, and attachments to other work.
a. Detail application of protective shields, saddles, and inserts at hangers for each type
of insulation and hanger.
b. Detail insulation application at elbows, fittings, dampers, specialties and flanges for
each type of insulation.
c. Detail application of field-applied jackets.
d. Detail application at linkages of control devices.
e. Manufacturer’s installation instructions and details of fire-rated insulation with ICC
Evaluation Service Report (ESR) indicating code compliance with Nationally
Recognized Testing Laboratory (NRTL) listings and testing criteria for listed product
and project specific application and codes. Include maximum duct size, minimum duct
gauge, and number of layers and thickness product is tested and listed for.
f.
Submit application schedule indicating each system and barrier provided.
g. Submit proof of manufacturer’s certified installer.
3. Quality Control Submittals:
a. Qualification Data: For qualified Installer.
1) For fire-rated blanket, proof of installer certification by manufacturer.
b. Material Test Reports: From a qualified testing agency acceptable to authorities
having jurisdiction indicating, interpreting, and certifying test results for compliance of
insulation materials, sealers, attachments, cements, and jackets, with requirements
indicated. Include dates of tests and test methods employed.
c. Field quality-control reports for fire-rated insulation systems.
1.5 QUALITY ASSURANCE
A.
Installer Qualifications: Skilled mechanics who have successfully completed an apprenticeship
program or another craft training program certified by the Department of Labor, Bureau of
Apprenticeship and Training.
1. For fire-rated blanket, installer certified by manufacturer.
B.
Surface-Burning Characteristics: For insulation and related materials, as determined by testing
identical products according to ASTM E 84, by a testing agency acceptable to authorities having
jurisdiction. Factory label insulation and jacket materials and adhesive, mastic, tapes, and
cement material containers, with appropriate markings of applicable testing agency.
1. Insulation Installed Indoors: Flame-spread index of 25 or less, and smoke-developed index
of 50 or less.
2. Insulation Installed Outdoors: Flame-spread index of 75 or less, and smoke-developed
index of 150 or less.
Phase I Buildings
Old Saybrook, CT
23 0700-2
August 1, 2013
C.
Fire-Rated Insulation Characteristic: Product reviewed by ICC evaluation service of test
procedures and results of testing materials identical to those specified in this Section and
according to standards below and acceptable to authorities having jurisdiction. Factory label
insulation and jacket materials and sealer material containers with appropriate markings of
applicable test standards and NRTL listings.
D.
Mockups: Before installing insulation, build mockups for each type of insulation and finish listed
below to demonstrate quality of insulation application and finishes. Mockups may be built as
part of installed system. Build mockups in the location indicated or, if not indicated, as directed
by Architect. Use materials indicated for the completed Work.
1. Ductwork Mockups:
a. One 10-foot section each of rectangular and round straight duct.
b. One each of a 90-degree mitered round and rectangular elbow, and one each of a 90degree radius round and rectangular elbow.
c. One rectangular branch takeoff and one round branch takeoff from a rectangular duct.
One round tee fitting.
d. One rectangular and round transition fitting.
e. Four support hangers for round and rectangular ductwork.
f.
Each type of damper and specialty.
2. For each mockup, fabricate cutaway sections to allow observation of application details for
insulation materials, adhesives, mastics, attachments, and jackets.
3. Notify Architect seven days in advance of dates and times when mockups will be
constructed.
4. Obtain Architect's approval of mockups before starting insulation application.
5. Approval of mockups does not constitute approval of deviations from the Contract
Documents contained in mockups unless Architect specifically approves such deviations in
writing.
6. Maintain mockups during construction in an undisturbed condition as a standard for judging
the completed Work.
7. Demolish and remove mockups when directed.
1.6 DELIVERY, STORAGE, AND HANDLING
A.
Deliver, store, and protect materials under provisions of Section 01 6000.
B.
Packaging: Insulation material containers shall be marked by manufacturer with appropriate
ASTM standard designation, type and grade, and maximum use temperature.
C.
Storage and Protection:
1. Keep materials dry. Protect stored on-site and installed absorptive materials from moisture
damage.
2. Verify that installed materials and products are dry prior to sealing and weatherproofing the
building envelope.
3. Install interior absorptive materials only after building envelope is sealed and
weatherproofed.
1.7 COORDINATION
A.
Coordinate sizes and locations of supports, hangers, and insulation shields specified in Division
15 Section "Hangers and Supports for HVAC Piping and Equipment."
B.
Coordinate clearance requirements with duct Installer for duct insulation application. Before
preparing ductwork Shop Drawings, establish and maintain clearance requirements for
installation of insulation and field-applied jackets and finishes and for space required for
maintenance.
Phase I Buildings
Old Saybrook, CT
23 0700-3
August 1, 2013
C.
Coordinate installation and testing of heat tracing.
1.8 SCHEDULING
A.
Schedule insulation application after pressure testing systems and, where required, after
installing and testing heat tracing. Insulation application may begin on segments that have
satisfactory test results.
B.
Complete installation and concealment of plastic materials as rapidly as possible in each area of
construction.
PART 2: PRODUCTS
2.1 COVERING AND INSULATION
A.
Acceptable Manufacturers:
1. Armstrong Cork Company.
2. John-Manville Company.
3. Owens Corning Fiberglass.
4. Pittsburgh Plate Glass Company.
5. Certainteed.
6. Knauf.
7. Thermal Ceramics.
8. Unifrax.
B. The insulation hereinafter specified shall be furnished and installed by a contractor whose
principal business is the application and installation of thermal material on piping and duct
systems. All materials shall be manufactured by one of the approved manufacturers and shall
be installed in accordance with their standard published instructions except where these
instructions conflict with specifications hereinafter stated in which case the specifications shall
govern. All work shall be performed in a neat, workmanlike manner, and all adhesives, bands
and other fastening materials shall be supplied as required to properly apply the insulation
material.
C. Insulate all outside air, supply air and return air ducts above ceilings or in unconditioned areas
with 2" thick fiberglass, 1.0 pound density with aluminum foil flame resistant vapor barrier.
Insulation shall have a minimum installed ‘R’ value of R-5. Secure insulation to ducts with quick
tacking adhesive spot dubbed 6" on center. Transverse joint to have 2' overlap sealed with
adhesive. Longitudinal joint to be double rolled and stitch- stapled. Staples to be coated with
adhesive. On bottom of ducts wider than 24" secure insulation with sticklips or welded pins no
greater than 18" on center. Seal pin penetrations with matching tape. NO INTERIOR
INSULATION OF DUCTWORK WILL BE ALLOWED.
D. Refrigerant suction lines shall be insulated with 3/4" Halstead/Nomaco or Armaflex, installed in
accordance with manufacturer's recommendations.
E. All exterior supply and return ductwork shall be insulated with 2” thick rigid fiberglass ductboard,
R-9 minimum with FSK jacket. Wrap all exterior duct insulation with Polyguard “Alumiguard 60”
rubberized bitumen weather membrane.
F. All commercial kitchen grease ducts shall be insulated with 2” thick flexible fire barrier wrap with
foil faced jacket. Insulation shall achieve a 2 hour fire rating and zero clearance to combustibles
over the entire surface of the protected duct.
2.2 ACOUSTICAL LINING INSULATION
Phase I Buildings
Old Saybrook, CT
23 0700-4
August 1, 2013
A.
The work covered by this specification consists of furnishing all labor, equipment, materials and
accessories, and performing all operations required for correct fabrication and installation of
fibrous glass duct liner in sheet metal ducts for commercial air duct systems in accordance with
applicable project drawings and specifications.
1. All air duct systems operating at internal air velocities not exceeding rated duct liner
limitations as listed below, and internal air temperatures not exceeding 250° F.
B.
The finished duct system shall meet the requirements of NFPA 90A and 90B.
C.
Dimensions shown on the plans are finished inside dimensions.
D.
Fabrication and installation shall conform to manufacturer’s recommendations and to the
requirements of the latest edition of North American Insulation Manufacturers Association
(NAIMA) Fibrous Glass Duct Liner Standards, hereinafter referred to as NAIMA FGDLS, and/or
Sheet Metal and Air Conditioning Contractors National Association (SMACNA) Standard, HVAC
Duct Construction Standards - Metal and Flexible, hereinafter referred to as SMACNA HVAC
DCS.
E.
Duct liner insulation materials shall meet the requirements of the following:
1. American Society for Testing and Materials specifications:
a. ASTM C1071, Standard Specification for Thermal and Acoustical Insulation
(glass fiber, duct lining material).
b. ASTM G21, Practice for Determining Resistance of Synthetic Polymeric Materials
to Fungi (fungi resistance section only).
c. ASTM G22, Practice for Determining Resistance of Plastics to Bacteria (bacteria
resistance section only).
F.
Deliver all materials and/or fabricated, insulated duct sections and fittings to the jobsite and
store in a safe, dry place.
G.
Use all means necessary at the job site to protect materials from dust, dirt, moisture and
physical abuse before and during installation.
PART 3: EXECUTION
3.1 EXAMINATION
A.
B.
Examine substrates and conditions for compliance with requirements for installation tolerances
and other conditions affecting performance of insulation application.
1. Verify that systems to be insulated have been tested and are free of defects.
2. Verify that surfaces to be insulated are clean and dry.
Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 PREPARATION
A.
Surface Preparation: Clean and dry surfaces to receive insulation. Remove materials that will
adversely affect insulation application.
3.3 INSTALLATION - GENERAL REQUIREMENTS
A.
Install insulation materials, accessories, and finishes with smooth, straight, and even surfaces;
free of voids throughout the length of ducts and fittings.
B.
Install insulation materials, vapor barriers or retarders, jackets, and thicknesses required for
each item of duct system as specified in insulation system schedules.
Phase I Buildings
Old Saybrook, CT
23 0700-5
August 1, 2013
C.
Install accessories compatible with insulation materials and suitable for the service. Install
accessories that do not corrode, soften, or otherwise attack insulation or jacket in either wet or
dry state.
D.
Install insulation with longitudinal seams at top and bottom of horizontal runs.
E.
Install multiple layers of insulation with longitudinal and end seams staggered.
F.
Keep insulation materials dry during application and finishing.
G.
Install insulation with tight longitudinal seams and end joints. Bond seams and joints with
adhesive recommended by insulation material manufacturer.
H.
Install insulation with least number of joints practical.
I.
Where vapor barrier is indicated, seal joints, seams, and penetrations in insulation at hangers,
supports, anchors, and other projections with vapor-barrier mastic.
1. Install insulation continuously through hangers and around anchor attachments.
2. For insulation application where vapor barriers are indicated, extend insulation on anchor
legs from point of attachment to supported item to point of attachment to structure. Taper
and seal ends at attachment to structure with vapor-barrier mastic.
3. Install insert materials and install insulation to tightly join the insert. Seal insulation to
insulation inserts with adhesive or sealing compound recommended by insulation material
manufacturer.
J.
Apply adhesives, mastics, and sealants at manufacturer's recommended coverage rate and wet
and dry film thicknesses.
K.
Install insulation with factory-applied jackets as follows:
1. Draw jacket tight and smooth.
2. Cover circumferential joints with 3-inch-wide strips, of same material as insulation jacket.
Secure strips with adhesive and outward clinching staples along both edges of strip,
spaced 4 inches o.c.
3. Overlap jacket longitudinal seams at least 1-1/2 inches. Clean and dry surface to receive
self-sealing lap. Staple laps with outward clinching staples along edge at 4 inches o.c.
1) For below ambient services, apply vapor-barrier mastic over staples.
4. Cover joints and seams with tape, according to insulation material manufacturer's written
instructions, to maintain vapor seal.
5. Where vapor barriers are indicated, apply vapor-barrier mastic on seams and joints and at
ends adjacent to duct flanges and fittings.
6. Where two layers of insulation are utilized, the vapor barrier may be omitted from the inner
layer.
L.
Cut insulation in a manner to avoid compressing insulation more than 75 percent of its nominal
thickness.
M.
Finish installation with systems at operating conditions. Repair joint separations and cracking
due to thermal movement.
N.
Repair damaged insulation facings by applying same facing material over damaged areas.
Extend patches at least 4 inches beyond damaged areas. Adhere, staple, and seal patches
similar to butt joints.
3.4 PENETRATIONS
Phase I Buildings
Old Saybrook, CT
23 0700-6
August 1, 2013
A.
Insulation Installation at Roof Penetrations: Install insulation continuously through roof
penetrations.
1. Seal penetrations with flashing sealant.
2. For applications requiring only indoor insulation, terminate insulation above roof surface
and seal with joint sealant. For applications requiring indoor and outdoor insulation, install
insulation for outdoor applications tightly joined to indoor insulation ends. Seal joint with
joint sealant.
3. Extend jacket of outdoor insulation outside roof flashing at least 2 inches below top of roof
flashing.
4. Seal jacket to roof flashing with flashing sealant.
B.
Insulation Installation at Aboveground Exterior Wall Penetrations: Install insulation continuously
through wall penetrations.
1. Seal penetrations with flashing sealant.
2. For applications requiring only indoor insulation, terminate insulation inside wall surface
and seal with joint sealant. For applications requiring indoor and outdoor insulation, install
insulation for outdoor applications tightly joined to indoor insulation ends. Seal joint with
joint sealant.
3. Extend jacket of outdoor insulation outside wall flashing and overlap wall flashing at least 2
inches.
4. Seal jacket to wall flashing with flashing sealant.
C.
Insulation Installation at Interior Wall and Partition Penetrations (That Are Not Fire Rated):
Install insulation continuously through walls and partitions.
D.
Insulation Installation at Fire-Rated Wall and Partition Penetrations: Terminate insulation at fire
damper sleeves for fire-rated wall and partition penetrations. Externally insulate damper sleeves
to match adjacent insulation and overlap duct insulation at least 2 inches.
1. Comply with requirements in Division 7 Section "Through-Penetration Firestop Systems"
for firestopping and fire-resistive joint sealers.
E.
Insulation Installation at Floor Penetrations:
1. Duct: For penetrations through fire-rated assemblies, terminate insulation at fire damper
sleeves and externally insulate damper sleeve beyond floor to match adjacent duct
insulation. Overlap damper sleeve and duct insulation at least 2 inches.
2. Seal penetrations through fire-rated assemblies. Comply with requirements in Division 7
Section "Through-Penetration Firestop Systems."
3.2 INSULATION
A.
The insulation and all necessary accessory materials shall conform to local and state codes, to
NFPA Standard 90A and to the UL maximum fire hazard classification. Before insulating,
completely remove all dirt, grease, oil, scale and rust. The insulation shall be installed in a neat
and workmanlike manner. Any insulation which in the opinion of the Engineer does not meet these
standards shall be reinstalled by the Contractor at no expense to the Owner.
B.
Concealed supply, return and fresh air ductwork: Apply 4" strips of bonding adhesive to the
ductwork at 8" occasional centers. Wrap the insulation tightly onto the ductwork with all
circumferential joints, butted and longitudinal joints overlapped a minimum of 2". In addition,
secure the insulation to the bottom of facing flange on the circumferential joints and the longitudinal
joint overlap shall be flare stapled on 6" centers. Seal all circumferential and longitudinal joints with
3" wide self-sealing foil-reinforced Kraft tape. All pin penetrations and punctures in the facing shall
be taped.
3.3 ACOUSTICAL DUCT LINER
Phase I Buildings
Old Saybrook, CT
23 0700-7
August 1, 2013
A.
Verify that the duct liner product may be installed in accordance with project drawings, operating
performance parameters and limitations, and NAIMA FGDLS or SMACNA HVAC DCS.
B.
All portions of duct designated to receive duct liner shall be completely covered with duct liner.
Transverse joints shall be neatly butted and there shall be no interruptions or gaps. The black
pigmented or mat faced surface of the duct liner shall face the airstream.
C.
Duct liner shall be adhered to the sheet metal with 90% coverage of adhesive complying with
requirements of ASTM C916. All exposed leading edges and transverse joints shall be factory
coated or coated with adhesive during fabrication.
D.
Duct liner shall be additionally secured with mechanical fasteners, either weld-secured or impactdriven, which shall compress the duct liner sufficiently to hold it firmly in place. Adhesive bonded
pins are not permitted due to long-term adhesive aging characteristics. Spacing of mechanical
fasteners with respect to duct liner width shall be in accordance with SMACNA HVAC DCS.
Maximum spacing for mechanical fasteners shall be as follows:
1. Velocity = 0 to 2,500 feet per minute
From transverse end of liner: 3”
Across width of duct: 12” O.C.
From corners of duct: 4”
Along length of duct: 18” O.C.
2. Velocity = 2,501 to 5,000 feet per minute
From transverse end of liner: 3”
Across width of duct: 6” O.C.
From corners of duct: 4”
Along length of duct: 16” O.C.
E.
When air velocities exceed 4,000 fpm, galvanized sheet metal nosing shall be applied to all leading
edges of duct liner.
F.
AeroflexPLUS® Acoustical Duct Liner or Aeromat Duct Liner shall be cut to assure overlapped and
compressed longitudinal corner joints.
G.
Duct liner board shall be cut to assure tight, over-lapped corner joints. The top pieces of liner
board shall be supported at the edges by the side pieces.
H.
Upon completion of installation of duct liner and before operation is to commence, visually inspect
the system and verify that the duct liner insulation has been correctly installed.
I.
Open all system dampers and turn on fans to blow all scraps and other loose pieces of material out
of the duct system. Allow for a means of removal of such material.
Check the duct system to ensure that there are no air leaks through joints.
J.
K.
Contractor’s employees shall be properly protected during installation of all insulation. Protection
shall include proper attire when handling and applying insulation materials, and shall include (but
not be limited to) disposable duct respirators, gloves, hard hats and eye protection.
L.
The contractor shall conduct all job site operations in compliance with applicable provisions of the
Occupational Safety and Health Act, as well as with all state and/or local safety and health codes
and regulations that may apply to the work.
3.9 PROTECTION
A.
Protect installed products until completion of Project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
Phase I Buildings
Old Saybrook, CT
23 0700-8
August 1, 2013
END OF SECTION
Phase I Buildings
Old Saybrook, CT
23 0700-9
August 1, 2013
SECTION 23 3100
HVAC DUCTS
PART 1: GENERAL
1.1 SUMMARY
A.
Related Documents:
1. AIA Document A201-2007, “General Conditions of the Contract for Construction”, and
Division 01 - General Requirements of this Project Manual apply to all work of this Section.
B.
Section Includes:
1. Sheet Metal Ductwork.
2. Flexible Ductwork.
3. Gas Flues and Oven Stacks.
C.
Related Sections:
1. Section 23 0500 - Common Work for HVAC.
2. Section 23 0700 - HVAC Insulation.
1.2 REFERENCES
A.
Reference Standards: See Section 01 4200.
B.
References:
1. South Coast Air Quality Management District (SCAQMD):
a. Rule #1168, effective date July 1, 2005 and including rule amendment date of January
7, 2005.
2. Sheet Metal and Air Conditioning Contractors National Association (SMACNA):
a. IAQ Guidelines for Occupied Buildings Under Construction, 1995.
1.3 SUBMITTALS
A.
Submit under provisions of Section 01 3300:
1. Product Data: Manufacturer's printed literature on each product to be used, including, but
not limited to the following:
2. Shop Drawings:
a. Complete Duct Shop Drawings:
1) Shop drawings for ductwork shall be drawn to a scale of not less than 1/8" to the
foot and shall be complete with details of fittings and accessories.
3. Quality Control Submittals:
a. Design Data:
b. Test Reports:
c. Certificates:
d. Manufacturer’s Instructions:
e. Manufacturer’s Field Reports:
4. Contract Closeout Submittals:
a. Project Record Drawings:
b. Operation and Maintenance:
1) Operating and Maintenance Instructions (submit at least six weeks before job
completion)
c. Warranty Data: Submit warranty documents specified herein.
1.4 QUALITY ASSURANCE
Phase I Buildings
Old Saybrook, CT
23 3100-1
August 1, 2013
A.
Qualifications:
1. Installer Qualifications: Use only qualified personnel who are thoroughly trained and
experienced in the skills required and who shall be completely familiar with the referenced
standards and requirements of this work.
1.5 DELIVERY, STORAGE, AND HANDLING
A.
Deliver, store, and protect materials under provisions of Section 01 6000.
B.
Storage and Protection:
1. Keep materials dry. Protect stored on-site and installed absorptive materials from moisture
damage.
2. Verify that installed materials and products are dry prior to sealing and weatherproofing the
building envelope.
3. Install interior absorptive materials only after building envelope is sealed and
weatherproofed.
1.6 PROJECT/SITE CONDITIONS
A.
Environmental Conditions: Maintain environmental conditions (temperature, humidity, and
ventilation) within limits recommended by manufacturer for optimum results. Do not install
products under environmental conditions outside manufacturer's absolute limits.
PART 2: PRODUCTS
2.10 DUCTWORK
A. All ductwork, unless stated to the contrary, shall be constructed in accordance with the latest
issue of the SMACNA standards for 2 inch static pressure, and shall be not less than the
following gauge thickness:
Width:
0-12
13-30
31-54
55-84
85 and over
Galvanized Iron Gauge:
26
24
22
20
18
B. All ducts shall be substantially supported and hung from overhead steel and concrete
construction as described hereinafter.
C. Hangers:
1.
Ducts shall be hung from overhead steel construction (beams and joists) or concrete
construction by means of a trapeze type hanger constructed for various duct sizes as
listed below:
Duct Size:
48" x 18"
60" x 24"
84" x 24" (and larger)
2.
3.
Rod Diam:
1/4"
5/16"
3/8"
Shelf Angle:
1-1/2" x 1-1/2" x 3/16"
2" x 2" x 1/8"
2" x 2" x 1/4"
Spacing:
8'-0"
8'-0"
8'-0"
Hanger rods shall be welded to heavy iron "C" clamps with safety clamp bar and shall be
supported from bottom flange of steel beams and from top chord of steel joists. Do not
hang from bottom chord of steel joists, from bridging, or from metal roof deck.
Galvanized hanger bands shall be fastened to side of concrete beams by means of power
driven inserts. Do not drive inserts into bottom of concrete ribs, or concrete beams. Do
Phase I Buildings
Old Saybrook, CT
23 3100-2
August 1, 2013
4.
5.
6.
not hang from corrugated metal deck form if floor is less than 4" thick. If floor is thicker than
4", it will be permissible to hang ducts smaller than 48" x 18" from the side of corrugated
metal form with anchors equal to HILTI ZAMAC, or from bottom of corrugated metal form
with Thunderbolt masonry anchors and threaded rods.
All ducts smaller than 48" x 18" shall be supported by means of 1" x 1/8" galvanized band
hangers spaced 8'- 0" o.c. and fastened to the overhead steel and duct in the following
manner:
a. The top of band is bent over to hang on the beam flange with another piece of 1" x
1/8" bar bent to catch the opposite beam flange, bolted together to form a clamp. For
concrete, the top of band is fastened as described above.
b. The bottom of band is bent over (1-1/2" min.) to support the underside of the
ductwork.
c. Hanger bands shall be fastened to duct by means of three (3) galvanized metal
screws, one (1) of which shall be on the bottom and two (2) on side of the duct.
General Location:
a. Install hangers close to transverse joints of main ducts and branches, clinch collar
branch connections and the first branch elbows after nested splits.
b. Locate hangers of duct penetrating walls (or partitions) as though the walls will
contribute no support to the duct.
c. Install hangers in pairs on exact opposite sides of duct (install duct supports from
floors and walls when necessary).
d. Maintain hanger spacing intervals less than, equal to, but not greater than the
specified maximums.
e. Install hangers at the midpoint of small and medium size horizontal vaned square
elbows. On wide vaned square elbows, install additional hangers at maximum
allowable intervals (or less) measured along the heel lines of the elbows.
f.
Provide a set of hangers at the midpoint of small and medium size horizontal radius
elbows greater than 20°. Install one or more supplementary hangers, as necessary,
along the inside and outside arcs of large radius elbows of any angle whenever the
lengths of these arcs exceed the maximum hanger spacing length for that particular
size duct.
g. Provide at least one (1) set of hangers for short duct branches 3' or less in length.
h. Provide each duct riser with a minimum of two (2) supports completely spanning the
shaft opening at each floor. One (1) pair of supports may be used to support more
than one (1) duct riser, provided that the strength of the supports is increased
appropriately and proper additional supplementary steel is used at the extra risers.
i.
Support duct risers, located between floors that are more than 15' high, at each floor
and halfway point between floors. The distance between intermediate supports on
very high floors should not exceed 12'. (Intermediate hangers may be supported from
an adjacent wall or hung by rods from supports on the floor above.)
j.
Provide one (1) or more sets of hangers for equipment in duct runs such as heating
coils, etc., as recommended by their manufacturers.
Locate duct hangers approximately:
a. 2" to 24" from flexible connections of fans.
b. 12" to 36" from the main duct to the first hanger of long branch ducts.
c. 2" to 12" from the ends of all branch ducts and linear diffuser plenums.
d. 2" to 24" from fire damper breakaway joints.
e. 0" to half the duct width plus 2" from the vertical centerline of the lower elbow of
short vertical offsets made with vaned square elbows. The width refers to the
dimension of the elbow in the plane of the turn. (The heavier the duct, the closer the
hanger should be to the centerline of the elbow.)
f.
0" to half the duct width plus 2" from the vertical centerline of the bottom and top
elbows of vaned square elbow offsets over 8" high. (Diameters of hanger rods of
heavy offsets must be increased proportionately. The heavier the duct, the closer the
hanger should be to the centerline of the elbow.)
Phase I Buildings
Old Saybrook, CT
23 3100-3
August 1, 2013
g.
7.
1/8 of the arc in from the ends of bottom and top radius elbows of vertical offsets
longer than 8'. Short vertical offsets require hangers at the bottom elbow. Likewise,
sloping offsets need at least one (1) set of hangers at their low radius elbow. (Hangers
on sloping or arched surfaces should be fastened to ducts to prevent slippage.)
h. 6" to 12" from transverse joints of ducts whose lengths are the same as specified
hanger intervals.
i.
6" to 12" from one side of walls or partitions penetrated by ducts.
Maximum permitted hanger spacing:
a. Ducts with areas up to 4 square feet may have their hangers spaced up to 8' apart.
b. Ducts with areas 4.1 to 10 square feet may have their hangers spaced not more than
6' apart.
c. Ducts with areas over 10 square feet may have their hangers located up to 4' apart.
D.
All joints to be airtight and all branch takeoffs with two (2) diameter radius bends, 90° turns shall
be made with 1-1/2-diameter radius bands.
E.
All 90° turns shall have duct-turning vanes in location shown. Turning vanes are to be Titus,
Price or Krueger, constructed of double walls.
F.
Where necessary, the ducts are to be enlarged to take in pipes, beams and/or other
construction.
G.
Volume Control Dampers:
1. Provide adjustable opposed blade volume control dampers and locking devices at all
branches Where splitter damper controls are to be mounted exposed on walls or ceilings,
use Young Regulator Company Type 1A or 900A, or approved equal nickel-plated
regulators, complete with 3/8" bearings.
H.
Flexible Ductwork:
1. All flexible ducts shall be equal to Williamson Insulated Flex Duct. Vinyl core with helically
wound wire. Covering is 1" fiberglass with vinyl jacket. Jacket to meet UL listing for flame
spread and smoke development. Maximum length of flex duct is 5’-0". Flexible ductwork
shall not be used for return air systems.
I.
Fire Dampers:
1. Furnish and install, at locations shown on plans, and as required by NFPA and local
ordinances, fire dampers constructed and tested in accordance with UL Safety Standard
555. Each fire damper shall have a 1-1/2 hour fire protection rating, 212° F fusible link,
and shall include a UL label in accordance with established UL labeling procedures.
Damper Manufacturer's literature submitted for approval prior to installation shall include
comprehensive performance data developed from testing in accordance with AMCA
Standard 500 and shall illustrate pressure drops for all sizes of dampers required at all
anticipated airflow rates. Fire dampers shall be equipped for vertical or horizontal
installation as required by the location shown. Fire dampers shall be installed in wall and
floor openings utilizing steel sleeves, angles, other materials and practices required to
provide an installation equivalent to that utilized by the manufacturer when dampers were
tested at UL. Installation shall be in accordance with the damper manufacturer's
instructions. Fire dampers shall be Ruskin Type IBD 2 Style B for primary fire dampers for
use where ducts penetrate partitions with fire resistance ratings of two (2) hours.
2. Fire dampers shall be Ruskin IBD23 Type B for use in firewalls and floors with ratings up
to four (4) hours.
3. Damper manufacturer shall be Ruskin, Prefco, Air Balance or approved equal.
J.
Install access doors at each damper location. General Contractor will provide access doors for
all dampers which are concealed above plaster ceilings; location of these doors shall be
furnished to the General Contractor by the Heating, Ventilating and Air Conditioning Contractor.
Phase I Buildings
Old Saybrook, CT
23 3100-4
August 1, 2013
K.
Provide 12" x 12" access doors at all motorized dampers, both sides of duct mounted heating
coils, and for fire dampers. Access doors at motorized dampers and fire dampers to be equal to
Airsan SH, with glass port.
L.
All ducts penetrating walls or floors to be sealed to form a fire stop.
M.
All ducts shall be thoroughly cleaned before installation of grilles and starting of systems for
testing.
N.
No other work is to be fastened to or hung from ducts.
O.
Hood exhaust ducts to be construction as per NFPA Pamphlet 96, with 16-gauge black iron or
18-gauge stainless steel welded liquid tight, bolted and gasketed access doors at 20 foot
intervals and at each turn and riser.
P.
Note that this contractor shall submit complete shop drawings of all ductwork and details for
approval before fabrication.
Q.
All ductwork shall be designed for 0% leakage and installed for a maximum of 2.5% leakage.
This shall be certified by the Air Balancing Contractor.
R.
All underslab ductwork shall be McGill Airflow Polyvinyl-Chloride coated, galvanized, steel or
approved equal. All components shall be machine formed to ensure uniform size, construction
and performance. Duct shall be constructed with a double corrugation between the lockseams
to increase strength and rigidity. Elbow fittings shall be fabricated with standing seam
construction. For other type fittings, the seam shall be riveted and sealed, button punched and
sealed, or fastened with stainless steel metal screws and sealed.
2.13 GAS FLUES AND OVEN STACKS
A.
Furnish and install complete all flues as shown on the Drawings. Gas flues for bakery ovens
shall by Type "B" as manufactured by Metalbestos or approved equal, complete with storm
collar and Belmont top, unless otherwise indicated.
B.
Flues for unit heaters with motorized vent exhausters are to be 26 gauge minimum galvanized
steel single wall pipe with sealed joints. Transition to type “B” vent where penetrating the
exterior wall.
C.
Contractor shall properly support all flues. Roof openings are to be made by others. Flues are
to be installed in accordance with all State, City, Fire Underwriter's and Building Code
Requirements.
D.
All vents shall be listed and labeled, and installed in accordance with the appliance
manufacturer’s installation instructions.
PART 3: EXECUTION
3.1 DUCTWORK, GENERAL
A.
All ductwork shall be fabricated and installed in accordance with NFPA Bulletin 90A, the ASHRAE
Guide-Equipment and the SMACNA Duct Manuals.
B.
All duct sizes shown on the drawings are for internal net free area, allowance shall be made for
internal lining where required.
Phase I Buildings
Old Saybrook, CT
23 3100-5
August 1, 2013
C.
Ducts to be insulated with rigid insulation or lining shall be beaded at 12" spacing. Ducts to be
insulated with a non-rigid insulation or lining may be beaded or crossbroken. Neither beading nor
crossbreaking shall be considered a substitute for reinforcing.
D.
Types of joints and details of reinforcing shall be submitted with the shop drawings for the
Engineer's approval.
E.
Elbows shall be constructed with the inside radius equal to the duct width. Provide square elbows
where space conditions are insufficient to allow the use of standard radius elbows or where shown
on the drawings. Square elbows shall be provided with turning vanes. Turning vanes shall be
double thickness, nonadjustable of galvanized steel construction. Airsan Acoustiturn.
F.
Branch duct air diverters shall be single thickness vanes, adjustable, of galvanized steel
construction. Vanes shall be gang operated with all vanes synchronized to remain aligned to air
flow. Titus AG-45, or Carnes - see detail on drawings.
G.
Volume dampers shall be constructed in accordance with details shown in the SMACNA Duct
Manual. Dampers shall be equipped with locking quadrants with position indication.
H.
Connections between two dissimilar materials shall be separated by a gasket of rubber, neoprene
or roofing felt.
I.
Supports and hangers shall be fabricated, installed and spaced in accordance with SMACNA Duct
Manuals.
J.
Provide access doors in the ductwork to allow service or inspection of all dampers. Access doors
shall be constructed in accordance with details shown in the SMACNA Duct Manuals.
K.
All flexible ductwork shall be attached with metal draw bands and taped to assure an airtight
positive connection. 5'-0" maximum length per run of flex duct. Flex duct to be properly supported
with no crimps.
L.
All duct joints shall be sealed with approved duct sealant. The system shall be tested for leakage
prior to covering the ductwork. Test data shall be furnished to the Engineer. Special care shall be
taken on the sealing of return ducts to assure tight joints.
3.6 CLEANING AND ADJUSTING
A.
Clean surfaces in accordance with manufacturer’s recommendations.
B.
At the completion of the work, all parts of the installation shall be thoroughly cleaned of grease,
metal cutting and debris which may have accumulated. Any stoppage or discoloration or other
damage to parts of the Building, its finish, or furnishings, due to the Contractor's failure to
properly clean all equipment and ductwork, shall be repaired to the satisfaction of the Owner
and Architect by the Contractor at his expense.
C.
All unused insulation, pipe, sheet metal and scrap shall be removed from the premises.
3.9 SITE ENVIRONMENTAL PROCEDURES
A.
Waste Management: As specified in Section 01 7419 - Construction Waste Management.
B.
Resource Management:
1. Energy Efficiency: Verify equipment is properly installed, connected, and adjusted. Verify
that equipment is operating as specified.
Phase I Buildings
Old Saybrook, CT
23 3100-6
August 1, 2013
3.10 PROTECTION
A.
Protect installed products until completion of Project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION
Phase I Buildings
Old Saybrook, CT
23 3100-7
August 1, 2013
SECTION 23 3423
POWER VENTILATORS
PART 1: GENERAL
1.1 SUMMARY
A.
Related Documents:
1. AIA Document A201-2007, “General Conditions of the Contract for Construction”, and
Division 01 - General Requirements of this Project Manual apply to all work of this Section.
B.
Section Includes:
1. Centrifugal roof ventilators.
C.
Related Sections:
1. Section 23 0500 - Common Work for HVAC.
1.2 REFERENCES
A.
Reference Standards: See Section 01 4200.
1.3 SYSTEM DESCRIPTION
A.
Performance Requirements:
1. Project Altitude: Base fan-performance ratings on sea level.
1.4 SUBMITTALS
A.
Submit under provisions of Section 01 3300:
1. Product Data: Include rated capacities, furnished specialties, and accessories for each
type of product indicated and include the following:
a. Certified fan performance curves with system operating conditions indicated. Provide
family of curves at different operating speeds with "do not select left of" line indicated.
Curves showing only a single speed and the system operating point will not be
acceptable.
b. Certified fan sound-power ratings.
c. Motor ratings and electrical characteristics, plus motor and electrical accessories.
d. Material thickness and finishes, including color charts.
e. Roof curbs.
f.
Fan speed controllers.
g. Manufacturer’s installation requirements including clearances and recommended inlet
and outlet configuration.
h. Special coatings and stability to chemicals.
2. Shop Drawings: Detail equipment assemblies and indicate dimensions, weights, loads,
required clearances, method of field assembly, components, and location and size of each
field connection.
a. Wiring Diagrams: Power, signal, and control wiring.
b. Design Calculations: Calculate requirements for selecting vibration isolators and
seismic restraints and for designing vibration isolation bases.
c. Vibration Isolation Base Details: Detail fabrication, including anchorages and
attachments to structure and to supported equipment. Include auxiliary motor slides
and rails, and base weights.
3. Coordination Drawings: Reflected ceiling plans and other details, drawn to scale, on which
the following items are shown and coordinated with each other, based on input from
installers of the items involved:
a. Roof framing and support members relative to duct penetrations.
b. Ceiling suspension assembly members.
Phase I Buildings
Old Saybrook, CT
23 3423-1
August 1, 2013
c.
d.
4.
5.
Size and location of initial access modules for acoustical tile.
Ceiling-mounted items including light fixtures, diffusers, grilles, speakers, sprinklers,
access panels, and special moldings.
Quality Control Submittals:
a. Field quality-control test reports.
Contract Closeout Submittals:
a. Operation and Maintenance Data: For power ventilators to include in emergency,
operation, and maintenance manuals.
1.5 QUALITY ASSURANCE
A.
Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
B.
AMCA 211 and 311 Compliance: Products shall comply with air and sound performance
requirements and shall be licensed to use the AMCA-Certified Ratings Seal.
C.
NEMA Compliance: Motors and electrical accessories shall comply with NEMA standards.
D.
UL Standard: Power ventilators shall comply with UL 705.
E.
UL Standard: Provide power ventilators and utility set fans that comply with UL 762 and are UL
listed for grease removal on all commercial grease exhaust systems.
F.
UL Standard: Provide upblast propeller fans that are UL listed for smoke control systems.
1.6 DELIVERY, STORAGE, AND HANDLING
A.
Deliver, store, and protect materials under provisions of Section 01 6000.
B.
Deliver fans as factory-assembled unit, to the extent allowable by shipping limitations, with
protective crating and covering.
C.
Disassemble and reassemble units, as required for moving to final location, according to
manufacturer's written instructions.
D.
Lift and support units with manufacturer's designated lifting or supporting points.
1.7 COORDINATION
A.
Coordinate size and location of structural-steel support members.
B.
Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete,
reinforcement, and formwork requirements are specified in Division 3.
C.
Coordinate installation of roof curbs, equipment supports, and roof penetrations with roofing in
Division 07 Sections.
1.8 EXTRA MATERIALS
A.
Furnish extra materials described below that match products installed and that are packaged
with protective covering for storage and identified with labels describing contents.
1. Belts: One set for each belt-driven unit.
PART 2: PRODUCTS
2.1 CENTRIFUGAL ROOF VENTILATORS
Phase I Buildings
Old Saybrook, CT
23 3423-2
August 1, 2013
A.
Basis-of-Design Product: Subject to compliance with requirements, provide the product
indicated on Drawings or a comparable product by one of the following:
1. Acme Engineering & Mfg. Corp.
2. Greenheck.
3. Loren Cook Company.
4. Captive-Aire.
B.
Description: Direct-or belt-driven centrifugal fans as indicated in Schedule consisting of housing,
wheel, fan shaft, bearings, motor and disconnect switch, drive assembly, curb base, lifting lugs,
and accessories.
C.
Housing: Removable, spun-aluminum, dome top with stainless steel quick release latches and
outlet baffle; square, one-piece, aluminum base with welded corners and venturi inlet cone.
1. Upblast Units: Provide spun-aluminum discharge baffle to direct discharge air upward, with
rain and snow drains. Provide grease drain connection, grease collector, and UL 762 listed
fan for grease exhaust systems.
2. Hinged Subbase: Galvanized-steel hinged arrangement permitting service and
maintenance for UL 762 listed grease exhaust fan.
D.
Fan Wheels: Aluminum hub and wheel with backward-inclined blades.
1. Spark Resistant Construction: AMCA 99, Type A for explosion-proof applications.
E.
Belt-Driven Drive Assembly: Resiliently mounted to housing, with the following features:
1. Fan Shaft: Turned, ground, and polished steel; keyed to wheel hub.
2. Shaft Bearings: Regreasable, self-aligning ball bearings in cast-iron housing, ABMA rated
L50 of 200,000 hours.
3. Pulleys: Cast-iron, adjustable-pitch motor pulley.
4. Fan and motor isolated from exhaust airstream.
F.
Accessories:
1. Variable-Speed Controller: For direct drive units, solid-state control to reduce speed from
100 to less than 50 percent. Factory provided and mounted on unit unless indicated
otherwise.
2. Enclosed Switch: Non-fusible type, mounted inside motor compartment, factory wired
through an internal aluminum conduit. Non-fusible type mounted outside fan housing within
NEMA 3R enclosure, insulating heat baffle, for grease exhaust fans.
3. Bird Screens: Removable, 1/2-inch mesh, aluminum or brass wire.
4. Belt tensioner on fans with wheel diameter of 10 to 21 inches.
G.
Roof Curbs: Galvanized steel; mitered and welded corners; 1-1/2-inch-thick, 3 lb. density (6 lb.
for sound curb), rigid, fiberglass insulation adhered to inside walls; and 1-1/2-inch pressure
treated wood nailer. Size as required to suit roof opening and fan base.
1. Configuration: Built-in cant and mounting flange for non-insulated roofs.
2. Overall Height: 12 inches minimum for general exhaust; 18 inches for grease exhaust.
3. Sound Curb: Curb with sound-absorbing insulation matrix.
4. Pitch Mounting: Manufacture curb for roof slope.
5. Metal Liner: Galvanized steel.
6. Burglar Bars: 5/8-inch thick steel bars welded in place to form 6-inch squares where
indicated in Schedule.
7. Mounting Pedestal: Galvanized steel with removable access panel where indicated in
Schedule.
8. Vented Curb: Unlined with louvered vents in vertical sides. NFPA 96 listed for grease
exhaust. Curb dimensions and roof openings to meet NFPA 96 clearance requirements
with grease exhaust duct. Height as required so fan discharge is minimum 40 inches above
finished roof.
2.2 MOTORS
Phase I Buildings
Old Saybrook, CT
23 3423-3
August 1, 2013
A.
Comply with requirements in Section 23 0513 - Common Motor Requirements for HVAC
Equipment.
B.
Enclosure Type: Open drip proof for general applications.
C.
Enclosure Type: Totally enclosed, fan cooled in dust environments.
D.
Enclosure Type: Explosion-proof motors for all fans located in or exhaust explosive
atmospheres.
2.3 SOURCE QUALITY CONTROL
A.
Sound-Power Level Ratings: Comply with AMCA 301, "Methods for Calculating Fan Sound
Ratings from Laboratory Test Data." Factory test fans according to AMCA 300, "Reverberant
Room Method for Sound Testing of Fans." Label fans with the AMCA-Certified Ratings Seal.
B.
Fan Performance Ratings: Establish flow rate, pressure, power, air density, speed of rotation,
and efficiency by factory tests and ratings according to AMCA 210, "Laboratory Methods of
Testing Fans for Rating."
PART 3: EXECUTION
3.1 INSTALLATION
A.
Install power ventilators level and plumb.
B.
Support Units: Vibration-and seismic-control devices are specified in Division 23 Sections.
1. Secure vibration and seismic controls to concrete bases using anchor bolts cast in
concrete base.
C.
Secure roof-mounting fans to roof curbs with cadmium-plated hardware. Refer to Division 07
Sections for installation of roof curbs.
D.
Install units with clearances for service and maintenance.
E.
Label units according to requirements specified in Section 23 0553 - Identification for HVAC
Piping and Equipment.
3.2 CONNECTIONS
A.
Duct installation and connection requirements are specified in other Division 23 Sections.
Drawings indicate general arrangement of ducts and duct accessories. Make final duct
connections with flexible connectors. Flexible connectors are specified in Section 23 3100 HVAC Ducts.
B.
Install ducts adjacent to power ventilators to allow service and maintenance.
C.
Connect wiring and ground equipment according to Division 26.
3.3 FIELD QUALITY CONTROL
A.
Perform the following field tests and inspections and prepare test reports:
1. Verify that shipping, blocking, and bracing are removed.
2. Verify that unit is secure on mountings and supporting devices and that connections to
ducts and electrical components are complete. Verify that proper thermal-overload
protection is installed in motors, starters, and disconnect switches.
3. Verify that cleaning and adjusting are complete.
Phase I Buildings
Old Saybrook, CT
23 3423-4
August 1, 2013
4.
Disconnect fan drive from motor, verify proper motor rotation direction, and verify fan wheel
free rotation and smooth bearing operation. Reconnect fan drive system, align and adjust
belts, and install belt guards.
5. Adjust belt tension.
6. Adjust damper linkages for proper damper operation.
7. Verify lubrication for bearings and other moving parts.
8. Verify that manual and automatic volume control and fire and smoke dampers in connected
ductwork systems are in fully open position.
9. Disable automatic temperature-control operators, energize motor and adjust fan to
indicated rpm, and measure and record motor voltage and amperage.
10. Shut unit down and reconnect automatic temperature-control operators.
11. Remove and replace malfunctioning units and retest as specified above.
B.
Test and adjust controls and safeties. Replace damaged and malfunctioning controls and
equipment.
3.4 ADJUSTING
A.
Adjust damper linkages for proper damper operation.
B.
Adjust belt tension.
C.
Replace fan and motor pulleys as required to achieve design airflow.
D.
Lubricate bearings.
3.5 CLEANING
A.
Clean surfaces in accordance with manufacturer’s recommendations.
3.6 DEMONSTRATION
A.
Comply with requirements of Section 01 7900 - Demonstration and Training.
3.7 PROTECTION
A.
Protect installed products until completion of Project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION
Phase I Buildings
Old Saybrook, CT
23 3423-5
August 1, 2013
SECTION 23 4100
HVAC FILTERS
PART 1: GENERAL
1.1 SUMMARY
A.
Related Documents:
1. AIA Document A201-2007, “General Conditions of the Contract for Construction”, and
Division 01 - General Requirements of this Project Manual apply to all work of this Section.
B.
Section Includes:
1. Factory fabricated air filter devices and media utilized to remove particulate matter and
gaseous contaminants in HVAC applications.
C.
Related Sections:
1. Section 23 0500 Common Work for HVAC.
1.2 REFERENCES
A.
Reference Standards: See Section 01 4200.
1.3 DEFINITIONS
A.
ASHRAE: American Society of Heating, Refrigeration and Air Conditioning Engineers.
B.
IEST: Institute of Environmental Sciences and Technology.
C.
UL: Underwriters Laboratories.
D.
MERV: Minimum Efficiency Reporting Value per ASHRAE Standard 52.2 - Method of Testing
General Ventilation Air Cleaning Devices for Removal by Particle Size.
E.
ATMOSPHERIC DUST SPOT EFFICIENCY: per ASHRAE Standard 52.1 - Gravimetric and
Dust Spot Procedures for Testing Air-Cleaning Devices Used in General Ventilation for
Removing Particulate Matter. Information deleted as this Standard was closed by ASHRAE in
2008.
F.
DOP: Dioctyl Phthalate, a carcinogen that was part of the original military-defined process of
testing HEPA filters, no longer used to evaluate filters. Where noted, HEPA/ULPA filters should
be evaluated using polystyrene latex spheres (PSL).
G.
HEPA: High-Efficiency Particulate Air Filter, a filter with a factory confirmed efficiency of no less
than 99.97% when evaluated on particles 0.3 microns in size.
H.
ULPA: Ultra Low Penetration Air Filter, a filter with a factory confirmed efficiency of no less than
99.9995% when evaluated on particles 0.12 microns in size.
I.
HEGA: High Efficiency Gas Adsorber, box-style filter with a removal rate on specified
contaminants exceeding 95%.
1.4 SUBMITTALS
A.
Submit under provisions of Section 01 3300:
Phase I Buildings
Old Saybrook, CT
23 4100-1
August 1, 2013
1.
2.
3.
Product Data: Include dimensions; operating characteristics; required clearances and
access; rated flow capacity, including initial and final pressure drop at rated airflow;
efficiency and test method; UL classification; furnished specialties; and accessories for
each model indicated. Manufacturers’ literature and sales drawings acceptable.
Shop Drawings: Include plans, evaluations, sections, and details to illustrate component
assemblies and attachments.
a. Show filter holding mechanism assembly, dimensions, materials and methods of
installation and sealing in drawings.
b.
Include setting drawings, templates and requirements for installing anchor bolts and
anchorages.
Closeout Submittals
a. Operation and Maintenance Data: For each type of filter and filter holding mechanism
to include in emergency, operation and maintenance manuals.
1.5 QUALITY ASSURANCE
A.
Product Options: Drawings indicate size, profiles and dimensional requirements of air filter and
are based on the specific system indicated. Refer to Division 01 Section “Product
Requirements.”
B.
Comply with ARI 850.
C.
Comply with UL 900 for ASHRAE grade filters and UL 900 for HEPA/ULPA filters.
D.
Comply with ASHRAE Standard 52.2 where applicable, and IEST Recommended Practices for
HEPA/ULPA filters.
E.
Comply with NFPA 70 for installing electrical components.
F.
Comply with NFPA 90A and NFPA 90B.
1.6 DELIVERY, STORAGE AND HANDLING
A.
Deliver, store, and protect materials under provisions of Section 01 6000.
B.
Storage and Protection:
1. Keep materials dry. Protect stored on-site and installed absorptive materials from moisture
damage.
2. Verify that installed materials and products are dry prior to sealing and weatherproofing the
building envelope.
3. Install interior absorptive materials only after building envelope is sealed and
weatherproofed.
4. Store products in manufacturer's unopened packaging until ready for installation.
1.7 PROJECT CONDITIONS
A.
Environmental Conditions: Maintain environmental conditions (temperature, humidity, and
ventilation) within limits recommended by manufacturer for optimum results. Do not install
products under environmental conditions outside manufacturer's absolute limits.
1.8 MAINTENANCE
A.
Extra Materials:
1. Furnish extra materials below that match products installed and that are packaged with
protective covering for storage and identified with labels describing contents.
Phase I Buildings
Old Saybrook, CT
23 4100-2
August 1, 2013
PART 2: PRODUCTS
2.1 MANUFACTURERS
A.
Acceptable Manufacturers: Subject to compliance with requirements herein:
1. Air Filters, Terminal HEPA Filter Modules, Adsorbers, Built-up Bank Holding Frames, SideAccess Housings and Bag-in/Bag-out Containment Housings):
a. American Air Filter.
b. Burke Environmental, Inc.
c. Camfil Farr.
d. Filtration Group.
e. Flanders/Precisionaire/CSC Corp.
2. Air Filter Gages and Pressure Switches:
a. Dwyer Instruments.
2.2 PREFILTERS AND PRIMARY FILTERS - EFFICIENCY MERV 8
A.
Air handling equipment shall not to be operated without filters installed (ex: see roughing filter
section). Minimum efficiency during normal operation shall be no less than MERV 8.
B.
The filter shall have a minimum efficiency reporting value of MERV 8 when evaluated under the
guidelines of ASHRAE Standard 52.2. It shall have a MERV-A of 8 when evaluated under
Appendix J of the same Standard.
C.
Each filter shall consist of cotton and synthetic blended media, a welded wire media support
grid and a high wet-strength beverage board enclosing frame. The filter shall be listed by
Underwriters’ Laboratories as UL 900.
D.
Air Filter shall be Camfil Farr 30/30 or approved equal.
E.
The filter media area and initial resistance shall be:
1. For a 2” deep filter; 15 pleats per linear foot; maximum 0.31” w.g.
2. For a 4” deep filter; 11 pleats per linear foot; maximum 0.27” w.g.
2.3 ROUGHING FILTERS - MERV 7
A.
Roughing prefilters shall be medium efficiency, extended area, disposable type of the quantity
and size indicated on the drawings.
B.
The filter media shall have a minimum efficiency reporting value of MERV 7 when evaluated
under the guidelines of ASHRAE Standard 52.2. It shall have a MERV-A of 7 when evaluated
under Appendix J of the same Standard.
C.
The filter shall be listed by Underwriter Laboratories as UL 900.
D.
Air filter shall be Camfil Farr Aeropleat III or approved equal.
2.4 SECONDARY FILTERS - MINI-PLEAT 4” DEEP TYPE EFFICIENCY MERV 11, 13, OR 14
A.
Air filters shall be 4” deep high efficiency ASHRAE box style filters consisting of mini-pleated
wet laid fine fiber media, thermoplastic resin separators, frame to media adhesive and high wet
strength beverage board enclosing frame. Sizes shall be as noted on drawings or other
supporting materials.
B.
Filter media shall be of one continuous sheet of microfine wet-laid glass mat filter media formed
into uniformly spaced pleats and formed into a mini-pleat pack configuration. Thermoplastic
Phase I Buildings
Old Saybrook, CT
23 4100-3
August 1, 2013
pleat separators shall provide uniform media separation to promote uniform airflow throughout
the media. The enclosing frame shall be of high wet strength beverage board which shall be
bonded to the entire periphery of the media pack to prevent air bypass. The frame shall include
integral diagonal support members to ensure maintained media spacing and pleat stability. The
diagonal support members shall be bridge-engineered to prevent filter racking and ensure filter
configuration integrity. Filter shall be bi-directional with regard to airflow.
C.
The filter shall have a Minimum Efficiency Reporting Value of MERV (11, 13, 14)* when
evaluated under the guidelines of ASHRAE Standard 52.2. It shall have a MERV-A of (11, 13,
14)* when evaluated under Appendix J of the same Standard.
D.
Initial resistance to airflow shall be (0.39”, 0.44”, 0.57”)* w.g at an airflow of 500 fpm.
Manufacturer shall provide evidence of facility certification to ISO 9001:2000. The filter shall be
capable of withstanding 5” w.g. without failure of the media pack. (* requires selection)
E.
The filter shall be listed by Underwriter Laboratories as UL 900.
F.
Filters shall be Camfil Farr Opti-Pac or approved equal.
G.
Performance of the filter shall comply with the following minimum performance data based on a
24” by 24” by 4” filter tested at 2000 CFM.
Minimum Filter Performance Requirements
Efficiency
Initial Resistance (w.g.)
MERV 11
0.39”
MERV 13
0.44”
MERV 14
0.57”
H.
Media Area
113 sq. ft. based upon 24” by 24” by 4 size
113 sq. ft. based upon 24” by 24” by 4 size
113 sq. ft. based upon 24” by 24” by 4 size
Supporting Data - Provide a product test report for each listed efficiency including all details as
prescribed in ASHRAE Standard 52.2 including Appendix J.
2.5 SECONDARY FILTERS DEEP PLEAT 12” DEEP BOX-STYLE - EFFICIENCY MERV 11, 13, OR
14
A. Air filters shall be high-efficiency ASHRAE high lofted supported media disposable type
assembled in a compact and secure enclosing frame. Sizes shall be as noted on drawings or
other supporting materials.
B.
The filter media shall be of microfine glass laminated to a reinforcing backing to form a uniform
lofted media blanket. The media blanket shall be formed into uniform tapered radial pleats and
bonded to a stiffened backing that is bonded to the downstream side of the media to preclude
media oscillation. The media shall be mechanically and chemically bonded within the frame to
prevent air bypass. The enclosing frame shall be constructed of corrosion resistant galvanized
steel. Media support contour stabilizers shall be mechanically fastened to diagonal support
members to create a rigid and durable filter enclosure. There shall be a minimum of four contour
stabilizers on the air entering side and four on the air exiting side.
C.
The filter shall have a Minimum Efficiency Reporting Value of MERV (9, 11, 13, 14)* when
evaluated under the guidelines of ASHRAE Standard 52.2. It shall have a MERV-A of (9, 11, 13,
14)* when evaluated under Appendix J of the same Standard. Initial resistance to airflow shall
not exceed (0.36, 0.31”, 0.41”, 0.53”)* w. g. at an airflow of 500 fpm. The filter shall be capable
of withstanding 10” w.g. without failure of the media pack. Manufacturer shall provide evidence
of facility certification to ISO 9001:2000. Filter shall be listed by Underwriters Laboratories as UL
Class 2.
D.
The filter shall be listed by Underwriter Laboratories as UL 900.
Phase I Buildings
Old Saybrook, CT
23 4100-4
August 1, 2013
E.
Filters shall be Camfil Farr Riga-Flo or approved equal.
F.
Performance of the filter shall comply with the following minimum performance data based on a
24” by 24” by 12” filter tested at 2000 CFM.
Minimum Filter Performance Requirements
Efficiency
Initial Resistance (w.g.)
MERV 9
0.36”
MERV 11
0.31”
MERV 13
0.41”
MERV 14
0.53”
G.
Media Area
58 sq. ft. based upon 24” by 24” by 12 size
53 sq. ft. based upon 24” by 24” by 12 size
53 sq. ft. based upon 24” by 24” by 12 size
53 sq. ft. based upon 24” by 24” by 12 size
Supporting Data - Provide product test report for each listed efficiency including all details as
prescribed in ASHRAE Standard 52.2 including all details as prescribed in ASHRAE Standard
52.2 including Appendix J.
2.6 SECONDARY FILTERS DEEP PLEAT 12” V-STYLE PLEAT-IN-PLEAT BOX-STYLE EFFICIENCY MERV 11, 13, OR 14
A.
Air filters shall be high-efficiency ASHRAE pleat-in-pleat V-bank disposable type assembled in
a compact and secure enclosing frame. Sizes shall be as noted on drawings or other supporting
materials.
B.
Filter media shall be of microfine glass formed into uniformly spaced pleats separated by glass
filament separators and formed into a mini-pleat pack design. Each mini-pleat pack shall be
assembled into a V-bank configuration with an appropriate number of packs to obtain required
pressure drop. The media packs shall be bonded to the inside periphery of the enclosing frame
with a fire-retardant phosphorus-free sealant. The enclosing frame shall include modular
injection-molded plastic channels bonded to the media pack to prevent air bypass. Injectionmolded modular plastic supports shall be placed on the air entering and air exiting sides. The
filter shall have a nominal 1” header that is an integral component of the enclosing frame.
Injection-molded rigid plastic end caps shall be bonded to the top and bottom of the enclosing
structure to ensure a rigid and durable filter. A gasket shall be included on header-to-header
sealing surfaces to eliminate air bypass between headered filters. Filter shall be bi-directional
with regard to airflow.
C.
The filter shall have a Minimum Efficiency Reporting Value of MERV (11, 13, 14, 16)* when
evaluated under the guidelines of ASHRAE Standard 52.2-1999. It shall have a MERV-A of
(11, 13, 14, 16)* when evaluated under Appendix J of the same Standard. Initial resistance to
airflow shall be (0.22”, 0.28”, 0.29”, 0.64”)* w.g at an airflow of 500 fpm. Filter shall be qualified
by Underwriters Laboratories as UL 900 - Class 2. Manufacturer shall provide evidence of
facility certification to ISO 9001:2000. The filter shall be capable of withstanding 10” w.g. without
failure of the media pack.
D.
The filter shall be listed by Underwriter Laboratories as UL 900.
E.
Filters shall be Camfil Farr Durafil or approved equal.
F.
Performance of the filter shall comply with the following minimum performance data based upon
a 24” by 24” by 12” deep filter tested at 2000 cfm.
Minimum Filter Performance Requirements
Efficiency
Initial Resistance (w.g.)
MERV 11
0.22”
MERV 13
0.28”
Phase I Buildings
Old Saybrook, CT
Media Area
200 sq. ft. based upon 24” by 24” by 12 size
200 sq. ft. based upon 24” by 24” by 12 size
23 4100-5
August 1, 2013
MERV 14
MERV 16
G
0.31”
0.64”
200 sq. ft. based upon 24” by 24” by 12 size
200 sq. ft. based upon 24” by 24” by 12 size
Supporting Data - Provide product test reports for each listed efficiency including all details as
prescribed in ASHRAE Standard 52.2 2 including all details as prescribed in ASHRAE Standard
52.2 including Appendix J.
2.7 TEMPORARY AND CONSTRUCTION FILTERS
A.
Provide four (4) sets of polyester filtration media blankets to protect all filter banks during the
construction period. Provide pre-filters and high efficiency filters for use in filter banks during
the construction period. At no time during the construction period are systems to be operated
without filtration media blankets, pre-filters and final filters.
B.
The Contractor shall provide continuous maintenance of the temporary filters in all units during
the entire construction, start-up, testing, and final acceptance activities. The Contractor shall
provide additional temporary filters as necessary to facilitate completion of all start-up, testing
and commissioning activities.
1. During the entire period of construction, all permanent RTU’s shall have all their filters
removed and replaced with clean new filters, every week. Filters shall be rated MERV 8 or
better.
2. Upon completion of construction and one day prior to store opening, ALL filters in ALL
systems or units, shall be removed and replaced with clean new filters, rated MERV 13 or
better.
PART 3: EXECUTION
3.1 INSTALLATION
A.
Install filter frames according to manufacturer's written instructions.
B.
Position each filter unit with clearance for normal service and maintenance. Anchor filter
holding frames to substrate.
C.
The appropriate fastener, as recommended by the manufactured, shall secure each filter at its
corner; four (4) fasteners per filter.
D.
Install filters in position to prevent passage of unfiltered air.
E.
Coordinate filter installations with duct and air-handling unit installations.
3.2 CLEANING
A.
After completing system installation and testing, adjusting, and balancing air-handling and airdistribution systems, clean filter housings and install new filter media.
3.3 PROTECTION
A.
Protect installed products until completion of Project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION
Phase I Buildings
Old Saybrook, CT
23 4100-6
August 1, 2013
SECTION 23 5500
FUEL-FIRED HEATERS
PART 1: GENERAL
1.1 SUMMARY
A.
Related Documents:
1. AIA Document A201-2007, “General Conditions of the Contract for Construction”, and
Division 01 - General Requirements of this Project Manual apply to all work of this Section.
B.
Section Includes:
1. Gas fired unit heaters.
C.
Related Sections:
1. Section 23 0500 - Common Work for HVAC.
1.2 REFERENCES
A.
Reference Standards: See Section 01 4200.
1.3 SUBMITTALS
A.
Submit under provisions of Section 01 3300:
1. Product Data: For each type of fuel-fired unit heater indicated. Include rated capacities,
operating characteristics, and accessories.
2. Shop Drawings: For fuel-fired unit heaters; signed and sealed by a qualified professional
engineer. Include plans, elevations, sections, details, and attachments to other work.
a. Prepared by or under the supervision of a qualified professional engineer detailing
fabrication and assembly of fuel-fired unit heaters, as well as procedures and
diagrams.
b. Design Calculations: Calculate requirements for selecting vibration isolators and for
designing vibration isolation bases.
c. Detail equipment assemblies and indicate dimensions, weights, loads, required
clearances, method of field assembly, components, and location and size of each field
connection.
d. Wiring Diagrams: Power wiring.
3. Coordination Drawings: Plans, elevations, and other details, drawn to scale, on which the
following items are shown and coordinated with each other, based on input from installers
of the items involved:
a. Structural members to which equipment will be attached.
b. Items penetrating roof and the following:
1) Vent and gas piping rough-ins and connections.
4. Quality Control Submittals:
a. Manufacturer Seismic Qualification Certification: Submit certification that fuel-fired unit
heaters, accessories, and components will withstand seismic forces defined in
Division 23. Include the following:
1) Basis for Certification: Indicate whether withstand certification is based on actual
test of assembled components or on calculation.
a) The term "withstand" means "the unit will remain in place without separation
of any parts from the device when subjected to the seismic forces specified."
b) The term "withstand" means "the unit will remain in place without separation
of any parts from the device when subjected to the seismic forces specified
and the unit will be fully operational after the seismic event."
Phase I Buildings
Old Saybrook, CT
23 5500-1
August 1, 2013
2)
5.
Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and
locate and describe mounting and anchorage provisions.
3) Detailed description of equipment anchorage devices on which the certification is
based and their installation requirements.
b. Field quality-control test reports.
Contract Closeout Submittals:
a. Project Record Drawings:
b. Operation and Maintenance:
1) Operating and Maintenance Instructions (submit at least six weeks before job
completion)
c. Warranty Data: Submit warranty documents specified herein.
1.4 QUALITY ASSURANCE
A.
Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
B.
ASHRAE/IESNA 90.1-2007 Compliance: Applicable requirements in ASHRAE/IESNA 90.1 2007, Section 6 -"Heating, Ventilating, and Air-Conditioning."
C.
ANSI/ASHRAE/IESNA Standard 90.1-2007 Compliance: Equipment shall meet or exceed the
minimum efficiency requirements of the standard. Equipment shall bear a permanent label
installed by the manufacturer stating that the equipment complies with the requirements of
ASHRAE Standard 90.1.
1.5 WARRANTY
A.
Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or
replace heat exchanger of fuel-fired unit heater that fails in materials or workmanship within
specified warranty period.
1. Warranty Period: Two years from date of Substantial Completion.
1.6 EXTRA MATERIALS
A.
Furnish extra materials described below that match products installed and that are packaged
with protective covering for storage and identified with labels describing contents.
1. Fan Belts: One for each belt-driven fan size.
PART 2: PRODUCTS
2.1 UNIT HEATERS
A.
Acceptable Manufacturer:
1. Reznor.
2. Modine.
3. Sterling.
B.
AGA design certified gas-fired, direct-drive propeller unit heaters.
C.
Basic unit shall consist of casing, integral draft diverter, heat exchanger, horizontal adjustable
louvers, motor and fan assembly, burners, power vent fan, controls, suspension hanger
connection, drip pan and drain connections, summer fan switch. OSHA approved mesh
enclosure.
D.
Casing shall be rigidly built and painted with baked enamel.
Phase I Buildings
Old Saybrook, CT
23 5500-2
August 1, 2013
E.
Heat exchangers shall be aluminized steel assembled into an integral unit. Provide 10-year
warrantee on heat exchanger.
F.
Power venter shall be 180 degrees reversible permitting flue connection to be on either inlet or
outlet side of unit.
G.
Motor and fan assembly shall include a totally enclosed, thermally protected 115-volt motor of
adequate horsepower.
H.
Main burner shall be of continuous slot, dual port construction and shall produce an even
ribbon of flame; die formed of stainless steel.
I.
Pilot burner shall be made of stainless steel, spark ignition.
J.
Controls shall consist of: A combination pressure regulator, suitable for line pressure up to 15
in. wg, main gas valve, manual shutoff valve, and pilot cock, 100% pilot shutoff limit switch;
time-delay fan switch.
K.
Units shall be suspended with direction of blow as shown on plans and the louvers shall be
adjusted for optimum air circulation. All necessary materials and labor shall be furnished for
proper venting.
L.
All units shall be installed with a minimum 10'-0" clear from floor to bottom of unit. Units shall
be hung from top chord of steel joists or structural H sections or Unistrut; NOT from roof deck.
PART 3: EXECUTION
3.1 INSTALLATION
A.
Install and connect gas-fired unit heaters and associated fuel and vent features and systems
according to NFPA 54, applicable local codes and regulations, and manufacturer's written
installation instructions.
B.
Suspended Units: Suspend from substrate using threaded rods, spring hangers, and building
attachments. Secure rods to unit hanger attachments. Adjust hangers so unit is level and
plumb.
1. Restrain the unit to resist code-required horizontal acceleration.
C.
Substrate-Mounted Units: Provide supports connected to substrate. Secure units to supports.
Spring hangers and seismic restraints are specified in Division 23.
1. Anchor the unit to resist code-required horizontal acceleration.
3.2 CONNECTIONS
A.
Piping installation requirements are specified in other Division 22 sections. Drawings indicate
general arrangement of piping, fittings, and specialties.
B.
Install piping adjacent to fuel-fired unit heater to allow service and maintenance.
C.
Gas Piping: Comply with Section 22 1000 - Plumbing Piping. Connect gas piping to gas train
inlet; provide union with enough clearance for burner removal and service.
Vent Connections: Comply with Section 23 3100 - HVAC Ducts.
D.
F.
Electrical Connections: Comply with applicable requirements in Division 26 Sections.
1. Install electrical devices furnished with heaters but not specified to be factory mounted.
Phase I Buildings
Old Saybrook, CT
23 5500-3
August 1, 2013
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.
Report results in writing.
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.
B.
Tests and Inspections:
1. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and
equipment.
2. Verify bearing lubrication.
3. Verify proper motor rotation.
4. Test Reports: Prepare a written report to record the following:
a. Test procedures used.
b. Test results that comply with requirements.
c. Test results that do not comply with requirements and corrective action taken to
achieve compliance with requirements.
C.
Remove and replace malfunctioning units and retest as specified above.
3.4 ADJUSTING
A.
Adjust initial temperature set points.
B.
Adjust burner and other unit components for optimum heating performance and efficiency.
3.5 DEMONSTRATION
A.
Comply with requirements of Section 01 7900 - Demonstration and Training.
3.6 PROTECTION
A.
Protect installed products until completion of Project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION
Phase I Buildings
Old Saybrook, CT
23 5500-4
August 1, 2013
SECTION 23 7400
PACKAGED OUTDOOR HVAC EQUIPMENT
PART 1: GENERAL
1.1 SUMMARY
A.
Related Documents:
1. AIA Document A201-2007, “General Conditions of the Contract for Construction”, and
Division 01 - General Requirements of this Project Manual apply to all work of this Section.
B.
Section Includes:
1. Cooling and heating units 6 tons and smaller.
2. Cooling and heating units 7-1/2 to 10 tons.
C.
Related Sections:
1. Section 22 1000 - Plumbing Piping.
2. Section 23 0500 - Common Work for HVAC.
3. Section 23 3100 - HVAC Ducts.
1.2 REFERENCES
A.
Reference Standards: See Section 01 4200.
1.3 SUBMITTALS
A.
Submit under provisions of Section 01 3300:
1. Product Data: Include manufacturer's technical data for each model indicated, including
rated capacities, dimensions, required clearances, characteristics, furnished specialties,
and accessories.
2. Shop Drawings: Detail equipment assemblies and indicate dimensions, weights, loads,
required clearances, method of field assembly, components, and location and size of each
field connection. Prepare the following by or under the supervision of a qualified
professional engineer:
a. Design Calculations: Calculate requirements for selecting vibration isolators and for
designing vibration isolation bases.
b. Detail mounting, securing, and flashing of roof curb to roof structure. Indicate
coordinating requirements with roof membrane system.
c. Wiring Diagrams: Power, signal, and control wiring.
3. Quality Control Submittals:
a. Manufacturer Seismic Qualification Certification: Submit certification that rooftop air
conditioners, accessories, and components will withstand seismic forces defined in
Division 23. Include the following:
1) Basis for Certification: Indicate whether withstand certification is based on actual
test of assembled components or on calculation.
a. The term "withstand" means "the unit will remain in place without separation
of any parts from the device when subjected to the seismic forces specified
and the unit will be fully operational after the seismic event."
2) Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and
locate and describe mounting and anchorage provisions.
3) Detailed description of equipment anchorage devices on which the certification is
based and their installation requirements.
b. Field quality-control test reports.
4. Closeout Submittals:
Phase I Buildings
Old Saybrook, CT
23 7400-1
August 1, 2013
a.
b.
Operation and Maintenance Data: For rooftop air conditioners to include in
emergency, operation, and maintenance manuals.
Warranties: Special warranties specified in this Section.
1.4 QUALITY ASSURANCE
A.
Product Options: Drawings indicate size, profiles, and dimensional requirements of rooftop air
conditioners and are based on the specific system indicated. Refer to Section 01 6000 Product Requirements
B.
Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
C.
Fabricate and label refrigeration system to comply with ASHRAE 15, "Safety Code for
Mechanical Refrigeration."
D.
Energy-Efficiency Ratio: Equal to or greater than prescribed by ASHRAE 90.1, "Energy Efficient
Design of New Buildings except Low-Rise Residential Buildings."
E.
Coefficient of Performance: Equal to or greater than prescribed by ASHRAE 90.1, "Energy
Efficient Design of New Buildings except Low-Rise Residential Buildings."
F.
Comply with NFPA 54 for gas-fired furnace section.
G.
ARI Certification: Units shall be ARI certified and listed.
H.
ARI Compliance for Units with Capacities Less Than 135,000 Btuh: Rate rooftop air-conditioner
capacity according to ARI 210/240, "Unitary Air-Conditioning and Air-Source Heat Pump
Equipment."
1. Sound Power Level Ratings: Comply with ARI 270, "Sound Rating of Outdoor Unitary
Equipment."
I.
ARI Compliance for Units with Capacities 135,000 Btuh and More: Rate rooftop air-conditioner
capacity according to ARI 340/360, "Commercial and Industrial Unitary Air-Conditioning and
Heat Pump Equipment."
1. Sound Power Level Ratings: Comply with ARI 270, "Sound Rating of Outdoor Unitary
Equipment."
J.
Units shall be designed to operate with HCFC-free refrigerants.
K.
ANSI/ASHRAE/IESNA Standard 90.1-2007 Compliance: Equipment shall meet or exceed the
minimum efficiency requirements of the Standard. Equipment shall bear a permanent label
installed by the manufacturer stating that the equipment complies with the requirements of
ASHRAE Standard 90.1.
1.6 COORDINATION
A.
Coordinate installation of roof curbs, equipment supports, and roof penetrations in accordance
with Section 07 5300 - Elastomeric Membrane Roofing.
B.
Coordinate size, location, and installation of rooftop air-conditioner manufacturer's roof curbs
and equipment supports with roof installer.
1. Coordinate installation of restrained vibration isolation roof-curb rails.
1.7 WARRANTY
Phase I Buildings
Old Saybrook, CT
23 7400-2
August 1, 2013
A.
Special Warranty: Manufacturer's standard form in which manufacturer agrees to replace
components of rooftop air conditioners that fail in materials or workmanship within specified
warranty period.
1. Warranty Period for Compressors: Manufacturer's standard, but not less than five years
from date of Substantial Completion.
2. Warranty Period for Heat Exchangers: Manufacturer's standard, but not less than 10 years
from date of Substantial Completion.
3. Warranty Period for Solid-State Ignition Modules: Manufacturer's standard, but not less
than three years from date of Substantial Completion.
4. Warranty Period for Control Boards: Manufacturer's standard, but not less than three years
from date of Substantial Completion.
5. Warranty Period for Variable-Speed Fan Motors: Manufacturer's standard, but not less
than three years from date of Substantial Completion.
6. Warranty Period for Electronic Thermostats: Manufacturer's standard, but not less than
three years from date of Substantial Completion.
1.8 EXTRA MATERIALS
A.
Furnish extra materials described below that match products installed and that are packaged
with protective covering for storage and identified with labels describing contents.
1. Fan Belts: One set for each belt-drive fan.
2. Filters: One set of filters for each unit.
PART 2: PRODUCTS
2.1 ROOFTOP COOLING AND HEATING UNITS (7-1/2 TON TO 10 TON CAPACITY)
A.
Acceptable Manufacturers:
1. York.
2. Lennox.
3. Trane.
B.
General:
1. Units shall be convertible single package units. All models have dual independent
refrigerant circuits for efficient part load operation and maximum comfort control. All units
are self-contained and assembled on full perimeter base rails with holes in the four corners
for overhead rigging. Every unit is completely piped, wired, charged and tested at the
factory to simplify the field installation. All models (including those with an economizer) are
suitable for either bottom or horizontal duct connections. Models with power exhaust are
suitable for bottom duct connections only. All supply air blowers are equipped with a belt
drive that can be adjusted to meet the exact requirements of the job.
2. Each unit shall have 2 condenser fan motors. A high speed drive accessory is available
for applications with a higher CFM and/or static pressure requirement. All compressors
include crankcase heat and internal pressure relief. Every refrigerant circuit includes an
expansion valve, a liquid line filter-drier, a discharge line high pressure switch and a
suction line with a freezestat and low pressure/loss of charge switch. The unit control
circuit includes a 75 VA transformer, a 24-volt circuit breaker and a relay board with two
compressor lockout circuits, a terminal strip for thermostat wiring, plus an additional set of
pin connectors to simplify the interface of additional field controls. All units have long
lasting powder paint cabinets with 1000 hour salt spray test approval under ASTM-B117
procedures. All 208/230 and 460-volt models are ETL approved. All 208/230 and 575-volt
models are CGA approved. All models include a 1-year limited warranty on the complete
unit. Compressors and electric heater elements carry an additional 4-year warranty.
Aluminized steel tubular heat exchangers carry an additional 9-year warranty.
C.
Description:
Phase I Buildings
Old Saybrook, CT
23 7400-3
August 1, 2013
1.
2.
Units shall be factory-assembled, single packaged Electric Cooling/Gas Heat, designed for
outdoor mounted installation.
They shall have built-in field convertible duct connections for down discharge
supply/return or horizontal discharge supply/ return, and be available with factory installed
options or field installed accessories. The units shall be factory wired, piped, charged with
R-410A refrigerant and factory tested prior to shipment. All unit wiring shall be both
numbered and color coded. All units shall be manufactured in a facility certified to ISO
9001 standards and the cooling performance shall be rated in accordance with DOE and
ARI test procedures. Units shall be ETL & CGA listed, classified to ANSIZ21.47 standards,
UL 1995/CAN/CSA No. 236-M90 conditions.
D.
Unit Cabinet:
1. Unit cabinet shall be constructed of G90 galvanized steel, with exterior surfaces coated with
a non-chalking, powdered paint finish, certified at 1000 hours salt spray test per ASTMB117 standards. Indoor blower section shall be insulated with a minimum 1/2" thick
insulation, coated on the airside. Aluminum foil faced insulation shall be used in the furnace
compartment and be fastened with ridged fasteners to prevent insulation from entering the
air stream. Cabinet panels shall be "large" size, easily removable for servicing and
maintenance. Full perimeter base rails shall be provided to assure reliable transit of equipment, overhead rigging and proper sealing on roof curb applications. Disposable 2" filters
shall be furnished and be accessible through a removable access door, sealed airtight.
Units filter track shall be designed to accommodate either 1" or 2" filters. Fan performance
measuring ports shall be provided on the outside of the cabinet to allow accurate air
measurements of evaporator fan performance without removing panels or creating air bypass of the coils. Condensate pan shall be internally sloped and conform to ASHRAE 62-89
self-draining standards. Condensate connection shall be a minimum of 1" I.D. female and
be a ridged mount connection. Unit shall incorporate a fixed outdoor air damper with an
outdoor air intake opening covered with a bird screen and a rain hood painted to match the
exterior of the unit.
E.
Indoor (Evaporator) Fan Assembly:
1. Fan shall be a belt drive assembly and include an adjustable pitch motor pulley. Job site
selected (B.H.P.) brake horsepower shall not exceed the motors nameplate horsepower
rating, plus the service factor. Units shall be designed not to operate above service factor.
Fan wheel shall be double-inlet type with forward-curved blades, dynamically balanced to
operate smoothly throughout the entire range of operation. Airflow design shall be constant
air volume.
F.
Outdoor (Condenser) Fan Assembly:
1. The outdoor fans shall be of the direct-driven propeller type, discharge air vertically, have
aluminum blades riveted to corrosion resistant steel spider brackets and shall be dynamically balanced for smooth operation. The 4 outdoor fan motors shall be totally enclosed
with permanently lubricated bearings, internally protected against overload conditions and
staged independently.
G.
Refrigerant Components:
1. Compressors:
a. Shall be Scroll compressors internally protected with internal high-pressure relief and
over temperature protection.
b. Shall have internal spring isolation and sound muffling to minimize vibration and
noise, and be externally isolated on a dedicated, independent mounting.
2. Coils:
a.
Evaporator and condenser coils shall have aluminum plate fins mechanically
bonded to seamless internally enhanced copper tubes with all joints brazed.
Special Phenolic coating shall be available as a factory option.
b.
Evaporator and Condenser coils shall be of the direct expansion, draw-thru,
Phase I Buildings
Old Saybrook, CT
23 7400-4
August 1, 2013
3.
design.
Refrigerant Circuit and Refrigerant Safety Components shall include:
a.
Balance-port thermostatic expansion valve with independent circuit feed system.
b.
Filter drier/strainer to eliminate any moisture or foreign matter.
c. Accessible service gage connections on both suction and discharge lines to charge,
evacuate, and measure refrigerant pressure during any necessary servicing or
troubleshooting, without losing charge.
d. The refrigeration system shall provide at least 15° F of sub-cooling at design
conditions.
e. All models shall have two independent circuits.
H.
Unit Control:
1. Unit shall be complete with self-contained low-voltage control circuit protected by a
resetable circuit breaker on the 24-volt transformer side.
2. Unit shall incorporate a lockout circuit which provides reset capability at the space
thermostat or base unit, should any of the following standard safety devices trip and shut
off compressor.
3. Loss-of-charge/Low-pressure switch.
a. High-pressure switch.
b. Freeze-protection thermostat, evaporator coil. If any of the above safety
devices trip, a LED (light-emitting diode) indicator shall flash a diagnostic code
that indicates which safety switch has tripped.
4. Unit shall incorporate "AUTO RESET" compressor over temperature, over current
protection.
5. Unit shall operate with conventional thermostat designs and have a low voltage terminal
strip for easy hook-up.
6. Unit control board shall have on-board diagnostics and fault code display.
7. Standard controls shall include anti-short cycle and low voltage protection, and permit
cooling operation down to 0 °F.
8. Control board shall monitor each refrigerant safety switch independently.
9. Control board shall retain last 5 fault codes in non volatile memory, which will not be lost
in the event of a power loss.
I.
Gas Heating Section:
1. Shall be designed with induced draft combustion with post purge logic and energy saving
direct spark ignition, redundant main gas valve. Ventor wheel shall be constructed of
stainless steel for corrosion resistance. The heat exchanger shall be of the tubular type,
constructed of T1-40 aluminized steel for corrosion resistance and allowing minimum
mixed air entering temperature of 25° F. Burners shall be of the inshot type, constructed of
aluminum coated steel and contain air mixture adjustments. All gas piping shall enter the
unit cabinet at a single location through either the side or curb, without any field
modifications. An integrated control board shall provide timed control of evaporator fan
functioning and burner ignition. Heating section shall be provided with the following
minimum protection:
a. Primary and auxiliary high-temperature limit switches.
b. Induced draft motor speed sensor.
c. Flame roll out switch (automatic reset).
d. Flame proving controls. Unit shall have two independent stages of capacity.
J.
Unit Operating Characteristics:
1. Unit shall be capable of starting and running at 125° F outdoor temperature, exceeding
maximum load criteria of ARI Standard 340/360. The compressor, with standard controls,
shall be capable of operation down to 25° F outdoor temperature. Accessory low ambient kit
shall be available for operation to 0° F. Unit shall be provided with fan time delay to prevent
cold air delivery before heat exchanger warms up (Gas heat only).
Phase I Buildings
Old Saybrook, CT
23 7400-5
August 1, 2013
K.
Electrical Requirements:
1. All unit power wiring shall enter unit cabinet at a single factory provided location and be
capable of side or bottom entry, to minimize roof penetrations and avoid unit field
modifications. Separate side and bottom openings shall be provided for the control wiring.
L.
Parts 1 Year Standard Limited Warranties:
1. Compressor 5 Years
2. Heat Exchanger 10 Years
3. Electric Heat Element 5 Years
4. Other
M.
Electronic Enthalpy Automated Economizer with Dual Enthalpy Sensors:
1. Outdoor and return air dampers are interlocked and positioned by a fully-modulating,
spring return damper actuator. The maximum leakage rate for the outdoor air intake
dampers shall not exceed 2% when dampers are fully closed and operating against a
pressure differential of 0.5 IWG. A unit-mounted potentiometer shall be provided to adjust
the outdoor and return air damper assembly to take in CFM of outdoor air to meet the
minimum ventilation requirement of the conditioned space during normal operation. During
economizer operation, a mixed-air temperature control shall modulate the outdoor and
return air damper assembly to prevent the supply air temperature from dropping below
55°F. Changeover from compressor to economizer operation shall be provided by an
integral electronic enthalpy control that feeds input into the basic module. The outdoor
intake opening shall be covered with a rain hood that matches the exterior of the unit.
Water eliminator/filters shall be provided. Simultaneous economizer/compressor operation
is also possible. Dampers shall fully close on power loss.
N.
Roof curb shall be designed, manufactured and installed to resist seismic forces for the
geographic location of the installation based on the following criteria:
1. Seismic design category C.
3. SDS = 0.058 (SDS = spectral acceleration, short period).
O:
Roof Curb: 14" high, full perimeter curb with wood nailer (shipped knocked-down).
P.
Anti-Recycle Timer: Assures 5-minute off time between compressor cycles.
Q.
Hinged filter door access and toolless access panels.
2.2 ROOFTOP COOLING AND HEATING UNITS (3 TO 6 TON CAPACITY)
A.
Acceptable Manufacturers:
1. York.
2. Lennox.
3. Trane.
B.
General:
1. Package units shall be designed for outdoor installation. Only utility and duct connections
are required at the point of installation. The gas fired heaters have aluminized steel
tubular heat exchangers and hot surface to pilot ignition. They are available in natural gas
with field conversion to propane.
2. Units shall be factory-assembled, single packaged, Electric Cooling/Gas Heating units,
designed for outdoor mounted installation. They shall have built in, equal size, field
convertible duct connections for down discharge supply/return or horizontal discharge
supply/return. The units shall be factory wired, piped, charged with R-410A refrigerant and
factory tested prior to shipment. All unit wiring shall be both numbered and color
coded. All units shall be manufactured in a facility certified to ISO 9001 standards, and the
cooling performance shall be rated in accordance with DOE and ARI test procedures. The
Phase I Buildings
Old Saybrook, CT
23 7400-6
August 1, 2013
heating performance shall be rated to DOE and GAMA test procedures. Units shall be
CSA listed and classified to ANSI22.47. CAN/CGA2.3 standards and UL 1995/CAN/CSA
No. 236-M90 conditions.
C.
Unit Cabinet:
1. Unit cabinet shall be constructed of G90 galvanized steel, with exterior surfaces coated
with a non-chalking, powdered paint finish, certified at 750 hours salt spray test per ASTMB117 standards. The unit top shall be a single piece “Water Shed” design, with drip edges
and no-seam corners to provide optimum water integrity. Unit shall have a rigidly mounted
condenser coil guard to provide protection from objects and personnel after installation.
Indoor blower section shall be insulated with up to 3/4” thick, aluminum, foil faced
insulation, fastened to prevent insulation from entering the air stream. Cabinet panels shall
be “large” size, easily removable for servicing and maintenance, with built-in lift handles.
Unit shall be built on a formed, “Super-Structure” design base pan, with embossments at
critical points to add strength, rigidity and aid in minimizing sound. Full perimeter base rails
shall be provided to assure reliable transit of equipment, overhead rigging, for truck access
and proper sealing on roof curb applications. Base rails shall be removable, when required,
to lower unit height. Filters shall be furnished and be accessible through a removable
access door, sealed airtight. Units vertical discharge and return duct configuration shall be
designed to fit between standard 24” O.C. beams without modification to building structure,
duct work and base unit. Condensate pan shall be internally sloped and conform to
ASHRAE 62-89 self-draining standards, with 3/4” NPTI copper, ridged mount connection.
D.
Indoor (Evaporator) Fan Assembly:
1. Fan shall be direct drive, multi-speed design. Job site selected (BHP) brake horsepower
shall not exceed the motors nameplate horsepower rating. Fan wheel shall be double-inlet
type with forward-curved blades, dynamically balanced to operate smoothly throughout the
entire range of operation. Airflow design shall be constant air volume. Bearings shall be
sealed and permanently lubricated for longer life and no maintenance. Fan assembly shall
be “Slip Track” (slide-out) design for easy removal and cleaning.
E.
Outdoor (Condenser) Fan Assembly:
1. The outdoor fan shall be of the direct-driven propeller type, discharge air vertically, have
aluminum blades riveted to corrosion resistant steel spider bracket and shall be statically
balanced for smooth operation. The outdoor fan motor shall be totally enclosed with
permanently lubricated bearings and internally protected against overload conditions.
F.
Refrigerant Components:
1.
Compressors:
a. Shall be fully hermetic type, direct drive, internally protected with internal highpressure relief and over temperature protection. The hermetic motor shall be suction
gas cooled and have a voltage range of + or - 10% of the unit nameplate voltage.
b. Shall have internal isolation and sound muffling to minimize vibration and noise,
and be externally isolated on a dedicated, independent mounting.
2. Coils:
a. Evaporator and condenser coils shall have aluminum plate fins mechanically
bonded to seamless internally enhanced copper tubes with all joints brazed.
b. Evaporator coil shall be of the direct expansion, blow through design, while
condenser coil shall be draw through design.
3. Refrigerant Circuit and Refrigerant Safety Components:
a. Shall include independent fixed-orifice expansion devices.
b. Shall include filter/strainer to eliminate any foreign matter.
G.
Unit Operating Characteristics:
º
1. Unit shall be capable of starting and running at 125 F outdoor temperature, exceeding
maximum load criteria ARI Standard 210/240. The compressor, with standard controls,
Phase I Buildings
Old Saybrook, CT
23 7400-7
August 1, 2013
º
shall be capable of operation down to 45 F outdoor temperature. Accessory low ambient
º
kit shall be available for operation to 0 F.
H.
Electrical Requirements:
1. All unit power wiring shall enter unit cabinet at a single factory provided location and be
capable of side or bottom entry, to minimize roof penetrations and avoid unit field
modifications. Separate side and bottom openings shall be provided for the control wiring.
I.
Field-Installed Accessories
1.
Economizer Down Discharge/Supply Kit - Modulating integrated economizer provides
simultaneous operation between the mechanical cooling and economizer operation.
Independent blade design insures proper control and less than 1% leak rate. Includes
hood and mesh bird screen filter integrated into the hood, dry bulb sensor and relief
damper. Separate field accessories of single enthalpy and dual enthalpy are also
available. A built-in barometric relief of 25% is provided.
2. Dual Enthalpy Sensor - Additional sensor to single enthalpy sensor. Sensor senses both
the return air temperature dry bulb and humidity in conjunction with the single enthalpy
to determine the most economical mix. Single Enthalpy sensor also required.
3. Anti-Short Cycle Timer - Automatically prevents the compressor from restarting for 5
minutes after cycled off. Not required if Thermostat 2ET07700224 and 2ET04700224 are
used.
4. Roof curb shall be designed, manufactured and installed to resist seismic forces for the
geographic location of the installation based on the following criteria:
a. Seismic design category C.
b. SDS = 0.058 (SDS = spectral acceleration, short period).
5. Roof Curbs - NRCA approved curbs provide proper fit to base unit for rooftop installations.
Curbs are designed to be assembled through hinge pins in each corner. Kit also provides
seal strip to assure a water tight seal. 14 inch high roof curbs shall be used.
6. Transformer Kit - Kit provides necessary hardware to provide single phase models from
factory furnished 40 VA transformer capability to 75 VA transformer capability. (Required on
installations with economizer or motorized damper.)
PART 3: EXECUTION
3.1 INSTALLATION
A.
Install units level and plumb, maintaining manufacturer's recommended clearances. Install
according to ARI Guideline B.
B.
Isolation Curb Support: Install units on isolation curbs according to NRCA's "Low-Slope
Membrane Roofing Construction Details Manual," Illustration "Raised Curb Detail for Rooftop
Air Handling Units and Ducts."
3.2 CONNECTIONS
A.
Piping installation requirements are specified in other Division 22 Sections. Drawings indicate
general arrangement of piping, fittings, and specialties.
B.
Install piping adjacent to machine to allow service and maintenance.
1. Gas Piping: Comply with applicable requirements in Section 22 1000 - Plumbing Piping.
Connect gas piping to burner, full size of gas train inlet, and connect with union and shutoff
valve with sufficient clearance for burner removal and service.
2. Hot-Water Heating Piping: Comply with applicable requirements in Division 15 Section
"Hydronic Piping." Connect to supply and return coil tappings with shutoff or balancing
valve and union or flange at each connection.
Phase I Buildings
Old Saybrook, CT
23 7400-8
August 1, 2013
C.
Duct installation requirements are specified in other Division 23 Sections. Drawings indicate the
general arrangement of ducts. The following are specific connection requirements:
1. Install ducts to termination in roof curb.
2. Remove roof decking only as required for passage of ducts. Do not cut out decking under
entire roof curb.
3. Connect supply ducts to rooftop unit with flexible duct connectors specified in Section 23
3100 - HVAC Ducts.
4. Terminate return-air duct through roof structure and insulate space between roof and
bottom of unit with 2-inch-thick, acoustic duct liner.
D.
Electrical System Connections: Comply with applicable requirements in Division 26 Sections for
power wiring, switches, and motor controls.
E.
Ground equipment according to Division 26 sections.
F.
Tighten electrical connectors and terminals according to manufacturer's published torquetightening values. If manufacturer's torque values are not indicated, use those specified in UL
486A and UL 486B.
3.3 FIELD QUALITY CONTROL
A.
Manufacturer's Field Service: Engage a factory-authorized service representative to inspect,
test, and adjust field-assembled components and equipment installation, including connections,
and to assist in field testing. Report results in writing.
1. After installing rooftop air conditioners and after electrical circuitry has been energized, test
units for compliance with requirements.
2. Inspect for and remove shipping bolts, blocks, and tie-down straps.
3. Operational Test: After electrical circuitry has been energized, start units to confirm proper
motor rotation and unit operation.
4. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and
equipment.
B.
Remove malfunctioning units, replace with new units, and retest as specified above.
C.
Replace fan and motor pulleys, including belts, as required to achieve design airflow.
3.4 STARTUP SERVICE
A.
Engage a factory-authorized service representative to perform startup service.
B.
Complete installation and startup checks according to manufacturer's written instructions and do
the following:
1. Inspect for visible damage to unit casing.
2. Inspect for visible damage to furnace combustion chamber.
3. Inspect for visible damage to compressor, air-cooled outside coil, and fans.
4. Inspect internal insulation.
5. Verify that labels are clearly visible.
6. Verify that clearances have been provided for servicing.
7. Verify that controls are connected and operable.
8. Verify that filters are installed.
9. Clean outside coil and inspect for construction debris.
10. Clean furnace flue and inspect for construction debris.
11. Connect and purge gas line.
12. Adjust vibration isolators.
13. Inspect operation of barometric dampers.
14. Lubricate bearings on fan.
Phase I Buildings
Old Saybrook, CT
23 7400-9
August 1, 2013
15. Inspect fan-wheel rotation for movement in correct direction without vibration and binding.
16. Adjust fan belts to proper alignment and tension.
17. Start unit according to manufacturer's written instructions.
a. Start refrigeration system in summer only.
b. Complete startup sheets and attach copy with Contractor's startup report.
18. Inspect and record performance of interlocks and protective devices; verify sequences.
19. Operate unit for an initial period as recommended or required by manufacturer.
20. Perform the following operations for both minimum and maximum firing and adjust burner
for peak efficiency. Adjust pilot to stable flame.
a. Measure gas pressure on manifold.
b. Measure combustion-air temperature at inlet to combustion chamber.
c. Measure flue-gas temperature at furnace discharge.
d. Perform flue-gas analysis. Measure and record flue-gas carbon dioxide and oxygen
concentration.
e. Measure supply-air temperature and volume when burner is at maximum firing rate
and when burner is off. Calculate useful heat to supply air.
21. Calibrate thermostats.
22. Adjust and inspect high-temperature limits.
23. Inspect outside-air dampers for proper stroke and interlock with return-air dampers.
24. Start refrigeration system and measure and record the following:
a. Coil leaving-air, dry-and wet-bulb temperatures.
b. Coil entering-air, dry-and wet-bulb temperatures.
c. Outside-air, dry-bulb temperature.
d. Outside-air-coil, discharge-air, dry-bulb temperature.
25. Inspect controls for correct sequencing of heating, mixing dampers, refrigeration, and
normal and emergency shutdown.
26. Measure and record the following minimum and maximum airflows. Plot fan volumes on
fan curve.
a. Supply-air volume.
b. Return-air volume.
c. Relief-air volume.
d. Outside-air intake volume.
27. Simulate maximum cooling demand and inspect the following:
a. Compressor refrigerant suction and hot-gas pressures.
b. Short circuiting of air through outside coil or from outside coil to outside-air intake.
28. Verify operation of remote panel, including pilot-light operation and failure modes.
Inspect the following:
a. High-limit heat exchanger.
b. Warm-up for morning cycle.
c. Freezestat operation.
d. Economizer to limited outside-air changeover.
e. Alarms.
29. After startup and performance testing, change filters, vacuum heat exchanger and cooling
and outside coils, lubricate bearings, adjust belt tension, and inspect operation of power
vents.
3.5 ADJUSTING
A.
Adjust initial temperature and humidity set points.
B.
Set field-adjustable switches and circuit-breaker trip ranges as indicated.
C.
Occupancy Adjustments: When requested within 12 months of date of Substantial Completion,
provide on-site assistance in adjusting system to suit actual occupied conditions. Provide up to
two visits to site outside normal occupancy hours for this purpose, without additional cost.
Phase I Buildings
Old Saybrook, CT
23 7400-10
August 1, 2013
3.6 FILTER REPLACEMENT
A.
During the entire period of construction, all permanent RTU’s shall have all their filters removed
and replaced with clean new filters, every week. Filters shall be rated MERV 8 or better.
B.
Upon completion of construction and one day prior to store opening, ALL filters in ALL systems
or units, shall be removed and replaced with clean new filters, rated MERV 13 or better.
3.7 DEMONSTRATION
A.
Comply with requirements of Section 01 7900 - Demonstration and Training.
3.8 PROTECTION
A.
Protect installed products until completion of Project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION
Phase I Buildings
Old Saybrook, CT
23 7400-11
August 1, 2013