Attachment 2 - V2_549-21-700_Final Bid Documents_Specifications.pdf

549-21-700 | EHRM Infrastructure Upgrades

VA North Texas Health Care System – Dallas, TX

Final Bid Documents

11-01-23

00 01 10-1

TABLE OF CONTENTS

DEPARTMENT OF VETERANS AFFAIRS

VHA MASTER SPECIFICATIONS

TABLE OF CONTENTS

Section 00 01 10

SECTION NO DIVISION AND SECTION TITLES DATE

DIVISION 00 - SPECIAL SECTIONS

00 01 15 List of Drawing Sheets TBD 05-20

DIVISION 01 - GENERAL REQUIREMENTS

01 00 00 General Requirements 11-21

01 32 16.15 Project Schedules (Small Projects – Design/Bid/Build 11-21

01 33 23 Shop Drawings, Product Data, and Samples 11-23

01 35 26 Safety Requirements 05-24

01 42 19 Reference Standards 11-20

01 45 00 Quality Control 02-21

01 45 29 Testing Laboratory Services 11-18

01 57 19 Temporary Environmental Controls 01-21

01 74 19 Construction Waste Management 04-22

01 91 00 General Commissioning Requirements 04-22

DIVISION 02 – EXISTING CONDITIONS

02 21 13 Site Surveys 01-21

02 41 00 Demolition 08-17

02 82 11 Traditional Asbestos Abatement 01-21

02 82 13.13 Glovebag Asbestos Abatement 01-21

02 82 13.19 Asbestos Floor Tile and Mastic Abatement 01-21

02 82 13.21 Asbestos Roofing Abatement 01-21

02 83 33.13 Lead-Based Paint Removal and Disposal 01-21

DIVISION 03 – CONCRETE – NOT USED

DIVISION 04 – MASONRY – NOT USED

DIVISION 05 – METALS

05 12 00 Structural Steel Framing 11-18

DIVISION 06 – WOOD, PLASTICS AND COMPOSITES – NOT USED

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

07 84 00 Firestopping 01-21

07 92 00 Joint Sealants 04-22

07 95 13 Expansion Joint Cover Assemblies 01-21

Final Bid Documents

11-01-23

00 01 10-2

TABLE OF CONTENTS

SECTION NO DIVISION AND SECTION TITLES DATE

DIVISION 08 - OPENINGS

08 11 13 Hollow Metal Doors and Frames 01-21

08 14 00 Interior Wood Doors 01-21

08 31 13 Access Doors and Frames 04-22

08 71 00 Door Hardware 05-22

DIVISION 09 – FINISHES

09 05 16 Subsurface Preparation for Floor Finishes 01-21

09 06 00 Schedule for Finishes 01-21

09 22 16 Non-Structural Metal Framing 06-18

09 29 00 Gypsum Board 04-20

09 65 13 Resilient Base and Accessories 01-21

09 65 19 Resilient Tile Flooring 05-18

09 91 00 Painting 01-21

DIVISION 10 – SPECIALTIES

10 22 13 Wire Mesh Partitions 01-21

10 26 00 Wall and Door Protection 01-21

10 44 13 Fire Extinguisher Cabinets 08-18

DIVISION 11 – EQUIPMENT – NOT USED

DIVISION 12 – FURNISHINGS – NOT USED

DIVISION 13 - SPECIAL CONSTRUCTION

13 05 41 Seismic Restraint Requirements for Non-Structural

Components

11-18

DIVISION 14– CONVEYING EQUIPEMENT – NOT USED

DIVISION 21- FIRE SUPPRESSION

21 13 13 Wet-Pipe Sprinkler Systems 06-15

DIVISION 22 – PLUMBING – NOT USED

DIVISION 23 – HEATING, VENTILATING, AND AIR

CONDITIONING (HVAC)

23 05 11 Common Work Results for HVAC 03-23

23 05 41 Noise and Vibration Control for HVAC Piping and

Equipment

03-23

23 05 93 Testing, Adjusting, and Balancing for HVAC 03-23

23 07 11 HVAC and Boiler Plant Insulation 02-20

23 08 00 Commissioning of HVAC Systems 03-23

23 09 23 Direct-Digital Control System for HVAC 03-23

Final Bid Documents

11-01-23

00 01 10-3

TABLE OF CONTENTS

SECTION NO DIVISION AND SECTION TITLES DATE

23 23 00 Refrigerant Piping 03-23

23 31 00 HVAC Ducts and Casings 03-23

23 37 00 Air Outlets and Inlets 03-23

23 81 00 Decentralized Unitary HVAC Equipment 03-23

DIVISION 25 – INTEGRATED AUTOMATION – NOT USED

DIVISION 26 – ELECTRICAL

26 05 11 Requirements for Electrical Installations 11-22

26 05 19 Low-Voltage Electrical Power Conductors and Cables 11-22

26 05 26 Grounding and Bonding for Electrical Systems 11-22

26 05 33 Raceway and Boxes for Electrical Systems 11-22

26 05 41 Underground Electrical Construction 11-22

26 05 73 Overcurrent Protective Device Coordination Study 11-22

26 08 00 Commissioning of Electrical Systems 11-22

26 22 00 Low-Voltage Transformers 11-22

26 24 16 Panelboards 11-22

26 27 26 Wiring Devices 11-22

26 29 21 Enclosed Switches and Circuit Breakers 11-22

26 41 00 Facility Lightning Protection 11-22

26 43 13 Surge Protective Devices 11-22

26 51 00 Interior Lighting 11-22

DIVISION 27 – COMMUNICATIONS

27 05 11 Requirements for Communications Installations 09-19

27 05 26 Grounding and Bonding for Communications Systems 06-15

27 05 33 Conduits and Backboxes for Communications Systems 10-18

27 05 53 Identification for Communications Systems 12-22

27 05 36 Cable Trays for Communications Systems 12-22

27 10 00 Structured Cabling 06-15

27 11 00 Telecommunications Room Fittings 06-15

27 11 16 Communications Cabinets, Racks, Frames, and Enclosures 12-22

27 11 19 Communications Termination Blocks and Patch Panels 12-22

27 11 26 Communications Rack Mounted Power Protections and Power

Strips

12-22

27 13 13 Communications Copper Backbone Cabling 12-22

27 13 13.13 Communications Copper Cable Splicing and Terminations 12-22

27 13 23 Communications Optical Fiber Backbone Cabling 12-22

27 13 23.13 Communications Optical Fiber Splicing and Terminations 12-22

27 15 13 Communications Copper Horizontal Cabling 12-22

27 16 19 Communications Patch Cords, Station Cords, and Cross-

Connect Wire

12-22

DIVISION 28 – ELECTRONIC SAFETY AND SECURITY

28 05 00 Common Work Results for Electronic Safety and Security 04-18

28 05 13 Conductors and Cables for Electronic Safety and

Security

10-18

Final Bid Documents

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TABLE OF CONTENTS

SECTION NO DIVISION AND SECTION TITLES DATE

28 05 26 Grounding and Bonding for Electronic Safety and

Security

09-11

28 05 28.33 Conduits and Backboxes for Electronic Safety and

Security

09-11

28 08 00 Commissioning of Electronic Safety and Security Systems 11-16

28 13 00 Physical Access Control System 10-11

28 16 00 Intrusion Detection System 10-11

28 23 00 Video Surveillance 09-11

28 31 00 Fire Detection and Alarm 10-11

DIVISION 31 – EARTHWORK – NOT USED

DIVISION 32 – EXTERIOR IMPROVEMENTS

32 05 23 Cement and Concrete for Exterior Improvements 08-16

32 12 16 Asphalt Paving 09-15

32 90 00 Planting 08-16

DIVISION 33 – UTILITIES – NOT USED

DIVISION 34 – TRANSPORTATION – NOT USED

DIVISION 48 – Electrical Power Generation – NOT USED

Final Bid Documents

02-01-20

23 05 41 - 1

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

SECTION 23 05 41

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies the application of noise control measures, and vibration control techniques to boiler plant rotating equipment and parts including chillers, cooling towers, boilers, pumps, fans, compressors, motors and steam turbines.

B. A complete listing of all common acronyms and abbreviations are included in Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

Noise criteria, vibration tolerance and vibration isolation for HVAC and plumbing work.

1.2 RELATED WORK

A. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA and SAMPLES.

B. Section 23 05 10, COMMON WORK RESULTS FOR HVAC.

C. Section 23 31 00, HVAC DUCTS and CASINGS.

D. Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

1.3 QUALITY ASSURANCE

A. Refer to article, QUALITY ASSURANCE in specification Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

B. Noise Criteria:

1. Noise levels in all 8 octave bands due to equipment and duct systems shall not exceed following NC levels:

TYPE OF ROOM NC LEVEL

Audio Speech Pathology 25

Audio Suites 25

Auditoriums, Theaters 35-40

Bathrooms and Toilet Rooms 40

Chapels 35

Conference Rooms 35

Corridors (Nurse Stations) 40

Corridors(Public) 40

Dining Rooms, Food Services/ Serving 40

Examination Rooms 35

Gymnasiums 50

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NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

Kitchens 50

Laboratories (With Fume Hoods) 45 to 55

Laundries 50

Lobbies, Waiting Areas 40

Locker Rooms 45

Offices, Large Open 40

Offices, Small Private 35

Operating Rooms 40

Patient Rooms 35

Phono/Cardiology 25

Recreation Rooms 40-45

Shops 50

SPD (Decontamination and Clean Preparation) 45

Therapeutic Pools 45

Treatment Rooms 35

Warehouse 50

X-Ray and General Work Rooms 40

2. For equipment which has no sound power ratings scheduled on the plans, the contractor shall select equipment such that the fore-going noise criteria, local ordinance noise levels, and OSHA re-quirements are not exceeded. Selection procedure shall be in accordance with ASHRAE Fundamentals Handbook, Chapter 8, Sound and

Vibration.

3. An allowance, not to exceed 5db, may be added to the measured value to compensate for the variation of the room attenuating effect between room test condition prior to occupancy and design condition after occupancy which may include the addition of sound absorbing material, such as, furniture. This allowance may not be taken after occupancy. The room attenuating effect is defined as the difference between sound power level emitted to room and sound pressure level in room.

4. In absence of specified measurement requirements, measure equipment noise levels three feet from equipment and at an elevation of maxi-mum noise generation.

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NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

C. Allowable Vibration Tolerances for Rotating, Non-reciprocating Equip-ment: Not to exceed a self-excited vibration maximum velocity of 5 mm per second (0.20 inch per second) RMS, filter in, when measured with a vibration meter on bearing caps of machine in vertical, horizontal and axial directions or measured at equipment mounting feet if bearings are concealed. Measurements for internally isolated fans and motors may be made at the mounting feet.

1.4 SUBMITTALS

A. Submit in accordance with specification Section 01 33 23, SHOP

DRAWINGS, PRODUCT DATA, and SAMPLES.

B. Manufacturer's Literature and Data:

1. Vibration isolators:

a. Floor mountings

b. Hangers

c. Snubbers

d. Thrust restraints

2. Bases.

3. Acoustical enclosures.

C. Isolator manufacturer shall furnish with submittal load calculations for selection of isolators, including supplemental bases, based on

1.5 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. American National Standards Institute / Sheet Metal and Air Conditioning

Contractor’s National Association (ANSI/SMACNA):

001-2008........... Seismic Restraint Manual: Guidelines for

Mechanical Systems, 3rd Edition.

C. American Society of Civil Engineers (ASCE):

ASCE 7-2022........ Minimum Design Loads for Buildings and Other

Structures.

D. American Society of Heating, Refrigerating and Air-Conditioning Engineers

(ASHRAE):

Handbook-2021...... Fundamentals Handbook, Chapter 8, Sound and

Vibration

E. American Society for Testing and Materials (ASTM):

A123/A123M-2017.... Standard Specification for Zinc (Hot-Dip

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NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

Galvanized) Coatings on Iron and Steel

Products

A307-2021.......... Standard Specification for Carbon Steel Bolts and Studs, 60,000 PSI Tensile Strength

A575-2020.......... Standard Specification for Steel Bars, Carbon, Merchant Quality, M-Grades

D2240-05-2015...... Standard Test Method for Rubber Property -

Durometer Hardness

F. International Code Council (ICC):

IBC-2021........... International Building Code

G. Manufacturers Standardization Society (MSS) of the Valve and Fittings

Industry, Inc.:

SP-58-2018......... Pipe Hangers and Supports-Materials, Design, Manufacture, Selection, Application, and

Installation (ANSI)

H. Occupational Safety and Health Administration (OSHA):

29 CFR-1960.95..... Occupational Noise Exposure

I. Department of Veterans Affairs (VA):

H-18-8-2020........ Seismic Design Requirements

PART 2 - PRODUCTS

2.1 GENERAL REQUIREMENTS

A. Type of isolator, base, and minimum static deflection shall be as required for each specific equipment application as recommended by isolator or equipment manufacturer but subject to minimum requirements indicated herein and in the schedule on the drawings.

B. Elastometric Isolators shall comply with ASTM D2240 and be oil resistant neoprene with a maximum stiffness of 60 durometer and have a straight-line deflection curve.

C. Exposure to weather: Isolator housings to be either hot dipped galvanized or powder coated to ASTM B117 salt spray testing standards.

Springs to be powder coated or electro galvanized. All hardware to be electro galvanized. In addition provide limit stops to resist wind velocity. Velocity pressure established by wind shall be calculated in accordance with section 1609 of the International Building Code. A minimum wind velocity of 75 mph shall be employed.

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NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

D. Uniform Loading: Select and locate isolators to produce uniform loading and deflection even when equipment weight is not evenly distributed.

E. Color code isolators by type and size for easy identification of capacity.

2.2 SEISMIC RESTRAINT REQUIREMENTS FOR EQUIPMENTS

A. Bolt pad mounted equipment, without vibration isolators, to the floor or other support using ASTM A307 standard bolting material.

B. Floor mounted equipment, with vibration Isolators: Type SS. Where Type

N isolators are used provide channel frame base horizontal restraints bolted to the floor, or other support, on all sides of the equipment

Size and material required for the base shall be as recommended by the isolator manufacturer.

C. On all sides of suspended equipment, provide bracing for rigid supports and provide restraints for resiliently supported equipment.

2.3 VIBRATION ISOLATORS

A. Floor Mountings:

1. Double Deflection Neoprene (Type N): Shall include neoprene covered steel support plated (top and bottom), friction pads, and necessary bolt holes.

2. Spring Isolators (Type S): Shall be free-standing, laterally stable and include acoustical friction pads and leveling bolts. Isolators shall have a minimum ratio of spring diameter-to-operating spring height of 1.0 and an additional travel to solid equal to 50 percent of rated deflection.

3. Captive Spring Mount for Seismic Restraint (Type SS):

a. Design mounts to resiliently resist seismic forces in all direc-tions. Snubbing shall take place in all modes with adjustment to limit upward, downward, and horizontal travel to a maximum of 6 mm (1/4-inch) before contacting snubbers. Mountings shall have a minimum rating of one G coefficient of gravity as calculated and certified by a registered structural engineer.

b. All mountings shall have leveling bolts that must be rigidly bolted to the equipment. Spring diameters shall be no less than

0.8 of the compressed height of the spring at rated load. Springs shall have a minimum additional travel to solid equal to 50 percent of the rated deflection. Mountings shall have ports for

Final Bid Documents

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NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

spring inspection. Provide an all-directional neoprene cushion collar around the equipment bolt.

4. Spring Isolators with Vertical Limit Stops (Type SP): Similar to spring isolators noted above, except include a vertical limit stop to limit upward travel if weight is removed and also to reduce movement and spring extension due to wind loads. Provide clearance around restraining bolts to prevent mechanical short circuiting

5. Pads (Type D), Washers (Type W), and Bushings (Type L): Pads shall be natural rubber or neoprene waffle, neoprene and steel waffle, or reinforced duck and neoprene. Washers and bushings shall be reinforced duck and neoprene. Washers and bushings shall be reinforced duck and neoprene. Size pads for a maximum load of 345 kPa (50 pounds per square inch).

6. Seismic Pad (Type DS): Pads shall be natural rubber / neoprene waffle with steel top plate and drilled for an anchor bolt. Washers and bushings shall be reinforced duck and neoprene. Size pads for a maximum load of 345 kPa (50 pounds per square inch).

B. Hangers: Shall be combination neoprene and springs unless otherwise noted and shall allow for expansion of pipe.

1. Combination Neoprene and Spring (Type H): Vibration hanger shall contain a spring and double deflection neoprene element in series.

Spring shall have a diameter not less than 0.8 of compressed oper-ating spring height. Spring shall have a minimum additional travel of 50 percent between design height and solid height. Spring shall permit a 15 degree angular misalignment without rubbing on hanger box.

2. Spring Position Hanger (Type HP): Similar to combination neoprene and spring hanger except hanger shall hold piping at a fixed elevation during installation and include a secondary adjustment feature to transfer load to spring while maintaining same position.

3. Neoprene (Type HN): Vibration hanger shall contain a double deflection type neoprene isolation element. Hanger rod shall be separated from contact with hanger bracket by a neoprene grommet.

4. Spring (Type HS): Vibration hanger shall contain a coiled steel spring in series with a neoprene grommet. Spring shall have a diameter not less than 0.8 of compressed operating spring height.

Spring shall have a minimum additional travel of 50 percent between

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23 05 41 - 7

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

design height and solid height. Spring shall permit a 15 degree angular misalignment without rubbing on hanger box.

5. Hanger supports for piping 50 mm (2 inches) and larger shall have a pointer and scale deflection indicator.

6. Hangers used in seismic applications shall be provided with a neoprene and steel rebound washer installed ¼’ clear of bottom of hanger housing in operation to prevent spring from excessive upward travel

C. Snubbers: Each spring mounted base shall have a minimum of four all-directional or eight two directional (two per side) seismic snubbers that are double acting. Elastomeric materials shall be shock absorbent neoprene bridge quality bearing pads, maximum 60 durometer, replaceable and have a minimum thickness of 6 mm (1/4 inch). Air gap between hard and resilient material shall be not less than 3 mm (1/8 inch) nor more than 6 mm (1/4 inch). Restraints shall be capable of withstanding design load without permanent deformation.

D. Thrust Restraints (Type THR): Restraints shall provide a spring element contained in a steel frame with neoprene pads at each end attachment.

Restraints shall have factory preset thrust and be field adjustable to allow a maximum movement of 6 mm (1/4 inch) when the fan starts and stops. Restraint assemblies shall include rods, angle brackets and other hardware for field installation.

2.4 BASES

A. Rails (Type R): Design rails with isolator brackets to reduce mounting height of equipment and cradle machines having legs or bases that do not require a complete supplementary base. To assure adequate stiffness, height of members shall be a minimum of 1/12 of longest base dimension but not less than 100 mm (4 inches). Where rails are used with neoprene mounts for small fans or close coupled pumps, extend rails to compensate overhang of housing.

B. Integral Structural Steel Base (Type B): Design base with isolator brackets to reduce mounting height of equipment which require a complete supplementary rigid base. To assure adequate stiffness, height of members shall be a minimum of 1/12 of longest base dimension, but not less than 100 mm (four inches).

C. Inertia Base (Type I): Base shall be a reinforced concrete inertia base. Pour concrete into a welded steel channel frame, incorporating

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NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

prelocated equipment anchor bolts and pipe sleeves. Level the concrete to provide a smooth uniform bearing surface for equipment mounting.

Provide grout under uneven supports. Channel depth shall be a minimum of 1/12 of longest dimension of base but not less than 150 mm (six inches). Form shall include 13-mm (1/2-inch) reinforcing bars welded in place on minimum of 203 mm (eight inch) centers running both ways in a layer 40 mm (1-1/2 inches) above bottom. Use height saving brackets in all mounting locations. Weight of inertia base shall be equal to or greater than weight of equipment supported to provide a maximum peak-to-peak displacement of 2 mm (1/16 inch).

D. Curb Mounted Isolation Base (Type CB): Fabricate from aluminum to fit on top of standard curb with overlap to allow water run-off and have wind and water seals which shall not interfere with spring action.

Provide resilient snubbers with 6 mm (1/4 inch) clearance for wind resistance. Top and bottom bearing surfaces shall have sponge type weather seals. Integral spring isolators shall comply with Spring

Isolator (Type S) requirements.

2.5 SOUND ATTENUATING UNITS

Refer to specification Section 23 31 00, HVAC DUCTS and CASINGS.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Vibration Isolation:

1. No metal-to-metal contact will be permitted between fixed and floating parts.

2. Connections to Equipment: Allow for deflections equal to or greater than equipment deflections. Electrical, drain, piping connections, and other items made to rotating or reciprocating equipment (pumps, compressors, etc.) which rests on vibration isolators, shall be isolated from building structure for first three hangers or supports with a deflection equal to that used on the corresponding equipment.

3. Common Foundation: Mount each electric motor on same foundation as driven machine. Hold driving motor and driven machine in positive rigid alignment with provision for adjusting motor alignment and belt tension. Bases shall be level throughout length and width.

Provide shims to facilitate pipe connections, leveling, and bolting.

4. Provide heat shields where elastomers are subject to temperatures over 38 degrees C (l00 degrees F).

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NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

5. Extend bases for pipe elbow supports at discharge and suction connections at pumps. Pipe elbow supports shall not short circuit pump vibration to structure.

6. Non-rotating equipment such as heat exchangers and convertors shall be mounted on isolation units having the same static deflection as the isolation hangers or support of the pipe connected to the equipment.

B. Inspection and Adjustments: Check for vibration and noise transmission through connections, piping, ductwork, foundations, and walls. Adjust, repair, or replace isolators as required to reduce vibration and noise transmissions to specified levels.

3.2 ADJUSTING

A. Adjust vibration isolators after piping systems are filled and equipment is at operating weight.

B. Adjust limit stops on restrained spring isolators to mount equipment at normal operating height. After equipment installation is complete, adjust limit stops so they are out of contact during normal operation.

C. Attach thrust limits at centerline of thrust and adjust to a maximum of

1/4inch (6-mm) movement during start and stop.

D. Adjust active height of spring isolators.

E. Adjust snubbers according to manufacturer's recommendations.

F. Adjust seismic restraints to permit free movement of equipment within normal mode of operation.

G. Torque anchor bolts according to equipment manufacturer's recommendations to resist seismic forces.

3.3 COMMISSIONING

A. Provide commissioning documentation in accordance with the requirements of section 23 08 00 – COMMISSIONING OF HVAC SYSTEMS for all inspection, start up, and contractor testing required above and required by the

System Readiness Checklist provided by the Commissioning Agent.

B. Components provided under this section of the specification will be tested as part of a larger system. Refer to section 23 08 00 –

COMMISSIONING OF HVAC SYSTEMS and related sections for contractor responsibilities for system commissioning.

- - - E N D - - -

Final Bid Documents

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T-1

SELECTION GUIDE FOR VIBRATION ISOLATORS

EQUIPMENT ON GRADE 20FT FLOOR SPAN 30FT FLOOR SPAN 40FT FLOOR SPAN 50FT FLOOR SPAN

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

REFRIGERATION MACHINES

ABSORPTION --- D 0.3 --- SP 0.8 --- SP 1.5 --- SP 1.5 --- SP 2.0

PACKAGED HERMETIC --- D 0.3 --- SP 0.8 --- SP 1.5 --- SP 1.5 R SP 2.5

OPEN CENTRIFUGAL B D 0.3 B SP 0.8 --- SP 1.5 B SP 1.5 B SP 3.5

RECIPROCATING:

ALL --- D 0.3 --- SP 0.8 R SP 2.0 R SP 2.5 R SP 3.5

COMPRESSORS AND VACUUM PUMPS

UP THROUGH 1-1/2

HP

--- D,L, W

0.8 ---- D,L, W

0.8 --- D,L, W

1.5 --- D,L, W

1.5 --- D,L, W

2 HP AND OVER:

500 - 750 RPM --- D 0.8 --- S 0.8 --- S 1.5 --- S 1.5 --- S 2.5

750 RPM & OVER --- D 0.8 --- S 0.8 --- S 1.5 --- S 1.5 --- S 2.5

PUMPS

CLOSE

COUPLED

UP TO

1-1/2

HP

--- --- --- --- D,L, W

--- --- D,L, W

--- --- D,L, W

--- --- D,L, W

2 HP

OVER

--- --- --- I S 0.8 I S 1.5 I S 1.5 I S 2.0

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T-2

EQUIPMENT ON GRADE 20FT FLOOR SPAN 30FT FLOOR SPAN 40FT FLOOR SPAN 50FT FLOOR SPAN

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

LARGE

INLINE

Up to

25 HP

--- --- --- --- S 0.75 --- S 1.50 --- S 1.50 --- --- NA

26 HP

THRU

30 HP

--- --- --- --- S 1.0 --- S 1.50 --- S 2.50 --- --- NA

BASE

MOUNTED

UP TO

10 HP

--- --- --- --- D,L, W

--- --- D,L, W

--- --- D,L, W

--- --- D,L, W

15 HP

THRU

40 HP

I S 1.0 I S 1.0 I S 2.0 I S 2.0 I S 2.0

50 HP

OVER

I S 1.0 I S 1.0 I S 2.0 I S 2.5 I S 2.5

ROOF FANS

ABOVE OCCUPIED AREAS:

5 HP & OVER --- --- --- CB S 1.0 CB S 1.0 CB S 1.0 CB S 1.0

CENTRIFUGAL FANS

UP TO 50 HP:

UP TO 200 RPM B N 0.3 B S 2.5 B S 2.5 B S 3.5 B S 3.5

201 - 300 RPM B N 0.3 B S 2.0 B S 2.5 B S 2.5 B S 3.5

301 - 500 RPM B N 0.3 B S 2.0 B S 2.0 B S 2.5 B S 3.5

501 RPM & OVER B N 0.3 B S 2.0 B S 2.0 B S 2.0 B S 2.5

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EQUIPMENT ON GRADE 20FT FLOOR SPAN 30FT FLOOR SPAN 40FT FLOOR SPAN 50FT FLOOR SPAN

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

60 HP & OVER:

UP TO 300 RPM B S 2.0 I S 2.5 I S 3.5 I S 3.5 I S 3.5

301 - 500 RPM B S 2.0 I S 2.0 I S 2.5 I S 3.5 I S 3.5

501 RPM & OVER B S 1.0 I S 2.0 I S 2.0 I S 2.5 I S 2.5

COOLING TOWERS

UP TO 500 RPM --- --- --- --- SP 2.5 --- SP 2.5 --- SP 2.5 --- SP 3.5

501 RPM & OVER --- --- --- --- SP 0.75 --- SP 0.75 --- SP 1.5 --- SP 2.5

INTERNAL COMBUSTION ENGINES

UP TO 25 HP I N 0.75 I N 1.5 I S 2.5 I S 3.5 I S 4.5

30 THRU 100 HP I N 0.75 I N 1.5 I S 2.5 I S 3.5 I S 4.5

125 HP & OVER I N 0.75 I N 1.5 I S 2.5 I S 3.5 I S 4.5

AIR HANDLING UNIT PACKAGES

SUSPENDED:

UP THRU 5 HP --- --- --- --- H 1.0 --- H 1.0 --- H 1.0 --- H 1.0

7-1/2 HP & OVER:

UP TO 500 RPM --- --- --- --- H,

THR

1.5 --- H, THR

2.5 --- H, THR

2.5 --- H, THR

2.5

501 RPM & OVER --- --- --- --- H,

THR

0.8 --- H, THR

0.8 --- H,TH

R

0.8 --- H,TH

R

2.0

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EQUIPMENT ON GRADE 20FT FLOOR SPAN 30FT FLOOR SPAN 40FT FLOOR SPAN 50FT FLOOR SPAN

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

FLOOR MOUNTED:

UP THRU 5 HP --- D --- --- S 1.0 --- S 1.0 --- S 1.0 --- S 1.0

7-1/2 HP & OVER:

UP TO 500 RPM --- D --- R S,

THR

1.5 R S, THR

2.5 R S, THR

2.5 R S, THR

2.5

501 RPM & OVER --- D --- --- S,

THR

0.8 --- S, THR

0.8 R S, THR

1.5 R S, THR

2.0

HEAT PUMPS

ALL --- S 0.75 --- S 0.75 --- S 0.75 CB S 1.5 --- --- NA

CONDENSING UNITS

ALL --- SS 0.25 --- SS 0.75 --- SS 1.5 CB SS 1.5 --- --- NA

IN-LINE CENTRIFUGAL AND VANE AXIAL FANS, FLOOR MOUNTED: (APR 9)

UP THRU 50 HP:

UP TO 300 RPM --- D --- R S 2.5 R S 2.5 R S 2.5 R S 3.5

301 - 500 RPM --- D --- R S 2.0 R S 2.0 R S 2.5 R S 2.5

501 - & OVER --- D --- --- S 1.0 --- S 1.0 R S 2.0 R S 2.5

60 HP AND OVER:

301 - 500 RPM R S 1.0 R S 2.0 R S 2.0 R S 2.5 R S 3.5

501 RPM & OVER R S 1.0 R S 2.0 R S 2.0 R S 2.0 R S 2.5

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T-5

NOTES:

1. Edit the Table above to suit where isolator, other than those shown, are used, such as for seismic restraints and position limit stops.

2. For suspended floors lighter than 100 mm (4 inch) thick concrete, select deflection requirements from next higher span.

3. For separate chiller building on grade, pump isolators may be omitted.

4. Direct bolt fire pumps to concrete base. Provide pads (D) for domestic water booster pump package.

5. For projects in seismic areas, use only SS & DS type isolators and snubbers.

6. For floor mounted in-line centrifugal blowers (ARR 1): use "B" type in lieu of "R" type base.

7. Suspended: Use "H" isolators of same deflection as floor mounted.

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SECTION 23 05 93

TESTING, ADJUSTING, AND BALANCING FOR HVAC

PART 1 - GENERAL

1.1 DESCRIPTION

A. A complete listing of common acronyms and abbreviations are included in

Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

B. Testing, adjusting, and balancing (TAB) of heating, ventilating and air conditioning (HVAC) systems. TAB includes the following:

1. Planning systematic TAB procedures.

2. Design Review Report.

3. Systems Inspection Report.

4. Duct Air Leakage Test Report.

5. Systems Readiness Report.

6. Balancing air and water distribution systems; adjustment of total system to provide design performance; and testing performance of equipment and automatic controls.

7. Vibration and sound measurements.

8. Recording and reporting results.

9. Document critical paths of flow on reports.

C. Definitions:

1. Basic TAB used in this Section: Chapter 39, "Testing, Adjusting and

Balancing" of ASHRAE Handbook "HVAC Applications".

2. TAB: Testing, Adjusting and Balancing; the process of checking and adjusting HVAC systems to meet design objectives.

3. AABC: Associated Air Balance Council.

4. NEBB: National Environmental Balancing Bureau.

5. TABB: Testing Adjusting and Balancing Bureau.

6. SMACNA: Sheet Metal and Air Conditioning Contractors’ National

Association.

7. Hydronic Systems: Includes chilled water, condenser water, heating hot water, and glycol-water systems.

8. Air Systems: Includes all outside air, supply air, return air, exhaust air and relief air systems.

9. Flow Rate Tolerance: The allowable percentage variation, minus to plus, of actual flow rate from values (design) in the contract documents.

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1.2 RELATED WORK

A. Section 01 00 00, GENERAL REQUIREMENTS.

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

C. Section 01 91 00, GENERAL COMMISSIONING REQUIREMENTS.

D. Section 13 05 41, SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRUCTURAL

COMPONENTS.

E. Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

F. Section 23 05 41, NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND

EQUIPMENT.

G. Section 23 07 11, HVAC AND BOILER PLANT INSULATION.

H. Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

I. Section 23 09 23, DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC.

J. Section 23 31 00, HVAC DUCTS AND CASINGS.

1.3 APPLICABLE PUBLICATIONS

A. The following publications form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only. Where conflicts occur these specifications and the VHA standards will govern.

B. American Society of Heating, Refrigerating and Air Conditioning

Engineers, Inc. (ASHRAE):

2019....................ASHRAE Handbook – HVAC Applications, Chapter

39, Testing, Adjusting, and Balancing and

Chapter 49, Noise and Vibration Control

C. Associated Air Balance Council (AABC):

2016....................National Standards for Total System Balance, 7th

Edition

D. National Environmental Balancing Bureau (NEBB):

2019....................Procedural Standard for Testing, Adjusting, and

Balancing of Environmental Systems, 9th Edition

2015....................Procedural Standard for the Measurement of

Sound and Vibration, 2nd Edition

S110-2019...............Whole Building Technical Commissioning of New

Construction, 2nd Edition

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E. Sheet Metal and Air Conditioning Contractors National Association

(SMACNA):

2002....................HVAC Systems Testing, Adjusting and Balancing, 3rd Edition

2003....................TAB Procedural Guide 1st Edition

1.4 SUBMITTALS

A. Submittals, including number of required copies, shall be submitted in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND

SAMPLES.

B. Information and material submitted under this section shall be marked

“SUBMITTED UNDER SECTION XX XX XX, SECTION TITLE”, with applicable paragraph identification.

C. Submit names and qualifications of TAB agency and TAB Specialists within 60 days after the notice to proceed. Submit information on three recently completed projects and a list of proposed test equipment.

D. For use by the COR staff, submit one complete set of applicable AABC, NEBB or TABB publications that will be the basis of TAB work.

E. Submit the following for review and approval:

1. Design Review Report within 90 days for conventional design projects after the system layout on air and water side is completed by the

Contractor.

2. Systems inspection report on equipment and installation for conformance with design.

3. Duct Air Leakage Test Report.

4. Systems Readiness Report.

5. Intermediate and Final TAB reports covering flow balance and adjustments, performance tests, vibration tests and sound tests.

6. Include in final reports uncorrected installation deficiencies noted during TAB and applicable explanatory comments on test results that differ from design requirements.

7. Include in each report the critical path for each balanced branch

(air and hydronic). Every branch shall have at least one terminal device damper 100 percent open.

F. Prior to request for Final or Partial Final inspection, submit completed Test and Balance report for the area with noted critical paths.

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1.5 QUALITY ASSURANCE

A. Refer to paragraphs QUALITY ASSURANCE and SUBMITTALS, in Section 23 05

11, COMMON WORK RESULTS FOR HVAC and Section 23 08 00, COMMISSIONING OF

HVAC SYSTEMS.

B. Qualifications:

1. TAB Agency: The TAB agency shall be a subcontractor of the General

Contractor and shall report to and be paid by the General

Contractor.

2. The TAB agency shall be either a certified member of AABC, NEBB, or

TABB to perform TAB service for HVAC, water balancing and vibrations and sound testing of equipment. The certification shall be maintained for the entire duration of duties specified herein. If, for any reason, the agency loses subject certification during this period, the General Contractor shall immediately notify the COR and submit another qualified TAB firm for approval. Any agency that has been the subject of disciplinary action by either the AABC, TABB or

NEBB within the five (5) years preceding Contract Award shall not be eligible to perform any work related to the TAB. All work performed in this Section and in other related Sections by the TAB agency shall be considered invalid if the TAB agency loses its certification prior to Contract completion, and the successor agency’s review shows unsatisfactory work performed by the predecessor agency.

3. TAB Specialist: The TAB Specialist shall be either a member of AABC or TABB or an experienced technician of the Agency certified by

NEBB. The certification shall be maintained for the entire duration of duties specified herein. If, for any reason, the Specialist loses subject certification during this period, the General Contractor shall immediately notify the COR and submit another TAB Specialist for approval. Any individual that has been the subject of disciplinary action by either the AABC or the NEBB within the five

(5) years preceding Contract Award shall not be eligible to perform any duties related to the HVAC systems, including TAB. All work specified in this Section and in other related Sections performed by the TAB Specialist shall be considered invalid if the TAB Specialist

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loses its certification prior to Contract completion and shall be performed by an approved successor.

4. TAB Specialist shall be identified by the General Contractor within sixty (60) days after the Notice to Proceed. The TAB Specialist will be coordinating, scheduling, and reporting all TAB work and related activities and will provide necessary information as required by the

COR. The responsibilities shall specifically include:

a. Directly supervising all TAB work.

b. Sign the TAB reports that bear the seal of the TAB standard. The reports shall be accompanied by report forms and schematic drawings required by the TAB standard, AABC, TABB or NEBB.

c. Following all TAB work through its satisfactory completion.

d. Providing final markings of settings of all HVAC adjustment devices.

e. Permanently mark location of duct test ports.

f. Documenting critical paths from the fan or pump. These critical paths are ones in which are 100 percent open from the fan or pump to the terminal device. This will show the least amount of restriction is being imposed on the system by the TAB firm.

5. All TAB technicians performing actual TAB work shall be experienced and shall have done satisfactory work on a minimum of three (3) projects comparable in size and complexity to this project.

Qualifications shall be certified by the TAB agency in writing. The lead technician shall be certified by AABC, TABB or NEBB.

C. Test Equipment Criteria: The instrumentation shall meet the accuracy/calibration requirements established by AABC National

Standards, TABB/SMACNA International Standards, or by NEBB Procedural

Standard for Testing, Adjusting and Balancing of Environmental Systems and instrument manufacturer. Provide calibration history of the instruments to be used for test and balance purpose. All equipment shall remain in calibration, or be re-calibrated if certification expires, during the TAB procedures.

D. TAB Criteria:

1. One or more of the applicable AABC, NEBB, TABB or SMACNA publications, supplemented by Chapter 39, "Testing, Adjusting and

Balancing" of ASHRAE Handbook "HVAC Applications" and requirements

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stated herein shall be the basis for planning, procedures, and reports.

2. Flow Rate Tolerance: Following tolerances are allowed. For tolerances not mentioned herein follow Chapter 39, "Testing, Adjusting and Balancing" of ASHRAE Handbook "HVAC Applications" as a guideline. Air Filter resistance during tests, artificially imposed, if necessary, shall be at least 100 percent of manufacturer recommended change over pressure drop values for pre-filters and after-filters.

a. Air handling unit and all other fans, cubic meters/min (cubic feet per minute): Minus 0 percent to plus l0 percent.

b. Air Terminal Units (maximum values): Minus 2 percent to plus l0 percent

c. Exhaust Hoods/Cabinets: 0 percent to plus l0 percent.

d. Minimum Outside Air: 0 percent to plus 10 percent.

e. Individual room air outlets and inlets, and air flow rates not mentioned above: Minus 5 percent to plus l0 percent except if the air to air space is 100 CFM or less the tolerance will be minus 5 to plus 5 percent.

f. Heating Hot Water Pumps and Hot Water Coils: Minus 5 percent to plus 5 percent.

g. Chilled Water and Condenser Water Pumps: Minus 5 percent to plus

5 percent.

h. Chilled Water Coils: Minus 5 percent to plus 5 percent.

3. Systems shall be adjusted for energy efficient operation as described in PART 3.

4. Typical TAB procedures and critical path results shall be demonstrated to the COR for one air distribution system (including all fans, 3 terminal units, 3 rooms randomly selected by the COR, one of which shall be a critical path) and 1 hydronic system (pumps and 3 coils) as follows:

a. When field TAB work begins.

b. During each partial final inspection and the final inspection for the project if requested by VA.

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PART 2 - PRODUCTS

2.1 PLUGS

A. Provide plastic plugs to seal holes drilled in ductwork for test purposes.

2.2 INSULATION REPAIR MATERIAL

A. See Section 23 07 11, HVAC and BOILER PLANT INSULATION. Provide for repair of insulation removed or damaged for TAB work.

PART 3 - EXECUTION

3.1 GENERAL

A. Refer to TAB Criteria in Paragraph QUALITY ASSURANCE.

B. Obtain applicable contract documents and copies of approved submittals for HVAC equipment and automatic control systems.

3.2 DESIGN REVIEW REPORT

A. The TAB Specialist shall review the contract documents and advise the

COR of any design deficiencies that would prevent the HVAC systems from effectively operating in accordance with the sequence of operation specified or prevent the effective and accurate TAB of the system. The

TAB Specialist shall provide a report individually listing each deficiency and the corresponding proposed corrective action necessary for proper system operation.

3.3 SYSTEMS INSPECTION REPORT

A. Inspect equipment and installation for conformance with design.

B. The inspection and report shall be done after air distribution and hydronic equipment is onsite and duct and piping installation has begun, but well in advance of performance testing and balancing work.

The purpose of the inspection is to identify and report deviations from design and ensure that systems will be ready for TAB at the appropriate time.

C. Reports: Follow checklist format developed by AABC, NEBB or SMACNA

(TABB), supplemented by narrative comments, with emphasis on air-handling units and fans. Check for conformance with submittals.

Verify that diffuser and register sizes are correct. Check air terminal unit installation including their duct sizes and routing.

3.4 DUCT AIR LEAKAGE TEST REPORT

A. TAB Agency shall perform the leakage test as outlined in "Duct Leakage

Tests and Repairs" in Section 23 31 00, HVAC DUCTS and CASINGS for TAB

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agency’s role and responsibilities in witnessing, recording and reporting of deficiencies.

3.5 SYSTEM READINESS REPORT

A. The TAB Contractor shall measure existing air and water flow rates associated with existing systems utilized to serve renovated areas as indicated in the contract documents. Submit report of findings to COR.

B. Inspect each system to ensure that it is complete including installation and operation of controls. Submit report to COR in standard format and forms prepared and/or approved by the Commissioning

Agent.

C. Verify that all items such as ductwork piping, dampers, valves, ports, terminals, connectors, etc., that are required for TAB are installed.

Provide a report to the COR.

3.6 TAB REPORTS

A. Submit an intermediate report for 50 percent of systems and equipment tested and balanced to establish satisfactory test results.

B. The TAB Contractor shall provide raw data immediately in writing to the

COR if there is a problem in achieving intended results before submitting a formal report.

C. If over 20 percent of readings in the intermediate report fall outside the acceptable range, the TAB report shall be considered invalid and all contract TAB work shall be repeated after engineering and construction have been evaluated and re-submitted for approval at no additional cost to the owner.

D. Do not proceed with the remaining systems until intermediate report is approved by the COR.

3.7 TAB PROCEDURES

A. TAB shall be performed in accordance with the requirement of the

Standard under which TAB agency is certified by either AABC, TABB or

NEBB. Balancing shall be done proportionally to all applicable systems.

1. At least 1 trunk damper shall be 100 percent open.

2. At least 1 branch damper shall be 100 percent open per trunk.

3. At least 1 terminal device duct be 100 percent open per branch.

4. At least one hydronic balancing valve shall be 100 percent open per hydronic system.

B. General: During TAB all related system components shall be in full operation. Fan and pump rotation, motor loads and equipment vibration

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shall be checked and corrected as necessary before proceeding with TAB.

Set controls and/or block off parts of distribution systems to simulate design operation of variable volume air or water systems for test and balance work.

C. Coordinate TAB procedures with existing systems and any phased construction completion requirements for the project. Provide TAB reports for pre-construction air and water flow rate and for each phase of the project prior to partial final inspections of each phase of the project. Return existing areas outside the work area to pre-constructed conditions.

D. Allow 14 days time in construction schedule for TAB and submission of all reports for an organized and timely correction of deficiencies.

E. Air Balance and Equipment Test: Include air-handling units, fans, terminal units and , room diffusers/outlets/inlets.

1. Artificially load air filters by partial blanking to produce static air pressure drop of manufacturer’s recommended pressure drop.

2. Adjust fan speeds to provide design air flow. V-belt drives, including fixed pitch pulley requirements, are specified in Section

23 05 11, COMMON WORK RESULTS FOR HVAC. Provide new drive sets as required to adjust fan speeds.

3. Test and balance systems in all specified modes of operation, including variable volume, economizer, and fire emergency modes.

Verify that dampers and other HVAC controls function properly.

4. Variable Air Volume (VAV) Systems:

a. Coordinate TAB, including system volumetric controls, with

Section 23 09 23, DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC.

b. Section 23 36 00, AIR TERMINAL UNITS, specifies that maximum and minimum flow rates for air terminal units (ATU) be factory set.

Check and readjust ATU flow rates if necessary to meet design criteria. Balance air distribution from ATU on full cooling maximum scheduled cubic meters per minute (cubic feet per minute). Reset room thermostats and check ATU operation from maximum to minimum cooling, to the heating mode, and back to cooling. Record and report the heating coil leaving air temperature when the ATU is in the maximum heating mode. Record and report outdoor air flow rates under all operating conditions

(The test shall demonstrate that the minimum outdoor air

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TESTING, ADJUSTING, AND BALANCING FOR HVAC

ventilation rate shall remain constant under all operating conditions).

c. Adjust operating pressure control setpoint to maintain the design flow to each space with the lowest setpoint. Where appropriate confirm static pressure reset is operational and functioning properly.

5. Record final measurements for air handling equipment performance data sheets.

6. Record final damper settings for all manual volume dampers.

F. Rooms with Specific Pressure Relationships Including Operating Rooms, Isolation Rooms, Pharmacy Compounding, and SPS :

1. For rooms that require specific pressure relationships as noted in the contract documents report the following information:

a. Room differential pressure at minimum and maximum flows.

b. Room air changes per hour (ACH).

c. Adjust airflows to achieve the required air pressure relationships. Increase/decrease the supply/exhaust airflow as needed. For positively pressurized rooms the supply airflow shall be set per the contract documents and return/exhaust airflow shall be adjusted to achieve the required pressure relationship.

For negatively pressurized rooms the exhaust airflow per the contract documents and the supply airflow adjusted to achieve the required pressure relationship.

G. Water Balance and Equipment Test: Include circulating pumps, chillers, heat exchangers, convertors, coils, coolers and condensers:

2. Adjust flow rates for equipment. Set coils and evaporator to values on equipment submittals, manufacturer’s instructions/published data if different from values in the contract documents.

3. Primary-Secondary (variable volume) Systems: Coordinate TAB with

Section 23 09 23, DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC. Balance systems at design water flow and then verify that variable flow controls function as designed.

4. Record final measurements for hydronic equipment on performance data sheets. Include entering and leaving water temperatures for heating and cooling coils, chillers, heat exchangers and for convertors.

Include entering and leaving air temperatures (DB/WB for cooling

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coils) for air-handling units and reheat coils. Make air and water temperature measurements at the same time.

5. On coils with automatic flow limiting valves (automatic balancing valves) measure and report Delta P across valve and measure Delta P across 100 percent open temperature control valve and using control valve CV calculate and report gpm.

6. Record final valve setting for all balancing valves.

3.8 VIBRATION TESTING

A. Furnish instruments and perform vibration measurements as specified in

Section 23 05 41, NOISE and VIBRATION CONTROL FOR HVAC PIPING and

EQUIPMENT. Field vibration balancing is specified in Section 23 05 11, COMMON WORK RESULTS FOR HVAC. Provide measurements for all rotating

HVAC equipment of 373 watts (1/2 horsepower) and larger, including centrifugal/screw compressors, cooling towers, pumps, fans and motors.

B. Record initial measurements for each unit of equipment on test forms and submit a report to the COR. Where vibration readings exceed the allowable tolerance Contractor shall be directed to correct the problem. The TAB agency shall verify that the corrections are done and submit a final report to the COR.

3.9 SOUND TESTING

A. Perform and record required sound measurements in accordance with paragraph QUALITY ASSURANCE in Section 23 05 41, NOISE and VIBRATION

CONTROL FOR HVAC PIPING and EQUIPMENT.

1. Take readings in rooms, approximately ten (10) percent of all rooms. The COR may designate the specific rooms to be tested.

2. Provide chiller and cooling tower sound measurements.

B. Take measurements with a calibrated sound level meter and octave band analyzer of the accuracy required by AABC, TABB or NEBB.

C. Sound reference levels, formulas and coefficients shall be according to

ASHRAE Handbook "HVAC Applications", Chapter 49, “Noise and Vibration

Control”.

D. Determine compliance with contract documents as follows:

1. When sound pressure levels are specified, including the NC Criteria in Section 23 05 41, NOISE and VIBRATION CONTROL FOR HVAC PIPING and

EQUIPMENT:

a. Reduce the background noise as much as possible by shutting off unrelated audible equipment.

Final…