- SCOPE
- REFERENCES
- DEFINITIONS
- GENERAL REQUIREMENTS
- WORKMANSHIP
- DUCTWORK
- DUCTWORK ACCESSORIES
- SOUND ATTENUATOR
- OUTSIDE AIR FILTERS
- DUCT INSULATION
- PIPE AND PIPE FITTINGS
- PIPING AND EQUIPMENT INSULATION
- SUPPORTS, ANCHORS AND SEALS
- VALVES
- WATER SPECIALTIES
- AIR DISTRIBUTION EQUIPMENT
- AIR TERMINAL UNITS
Tables
Table I – Duct Gages (500 Pa)
Table II – Duct Gages (1.5 kPa)
Table III – Duct Insulation
Table IV – Pipe Material
Table V – Fitting Materials
Table VI – Pipe Insulation thickness
Table VII – Pipe Hangers and Support
1. Scope
This Article covers installation of equipment and materials for HVAC systems and controls.
2. References
Reference is made in this article to the following documents.
American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)
ASHRAE 70 – Method of Testing for Rating the Performance of Air Outlets and Inlets.
ASHRAE 90.1 – Energy Standard for Buildings Except for Low-Rise Residential Buildings.
ASHRAE 90.2 – Energy-Efficient Design for Low-Rise Residential Buildings.
Air–Conditioning, Heating, and Refrigeration Institute (AHRI)
AHRI730 – Flow-Capacity Rating and Application of Suction-Line Filters and Filter-Driers.
AHRI750 – Thermostatic Refrigerant Expansion Valves.
AHRI760 – Solenoid Valves for Use with Volatile Refrigerants.
American Society of Mechanical Engineers (ASME)
ASME BPVC – Boiler and Pressure Vessel Code.
ASME A112.1.2 – Air Gaps in Plumbing Systems.
ASME B1.20.1 – Pipe Threads, General Purpose.
ASME B16.1 – Gray Iron Pipe Flangesand Flanged Fittings: Classes 25, 125, and 250.
ASME B16.3 – Malleable Iron Threaded Fittings Classes 150 and 300.
ASME B16.5 – Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24.
ASME B16.9 – Factory-Made Wrought Steel Buttwelding Fittings.
ASME B16.22 – Wrought Copper and Copper Alloy Solder Joint Pressure Fittings.
ASME B16.39 – Malleable Iron Threaded Pipe Unions Classes 150, 250, and 300.
ASME B31.9 – Building Services Piping.
ASME B31.5 – Refrigeration Piping.
ASME B40.100 – Pressure Gauges and Gauge Attachments
American Society of Sanitary Engineering (ASSE)
ASSE1013 – Performance Requirements for Reduced Pressure Principle Backflow Preventers and Reduced Pressure Fire Protection Principle Backflow Preventers
American Society for Testing and Materials (ASTM)
ASTMA126 – Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings.
ASTM A480/A 480M – Specification for General Requirements for Flat-Rolled Stainless and Heat- Resisting Steel Plate, Sheet, and Strip.
ASTM A653/A653M – Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy- Coated (Galvannealed) by the Hot-Dip Process.
ASTM B88 – Specification for Seamless Copper Water Tube.
ASTMB209M – Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric).
ASTM C534 – Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form.
ASTM C552 – Specification for Cellular Glass Thermal Insulation.
ASTM C553 – Specification for Mineral Fiber Blanket Thermal Insulation for Commercial and Industrial Applications.
ASTM C578 – Specification for Rigid, Cellular Polystyrene Thermal Insulation.
ASTM C612 – Specification for Mineral Fiber Block and Board Thermal Insulation ASTM C916 – Specification for Adhesives for Duct Thermal Insulation.
ASTM C921 – Practice for Determining the Properties of Jacketing Materials for Thermal Insulation.
ASTM E84 – Test Method for Surface Burning Characteristics of Building Materials.
ASTM A1008/A1008M – Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable.
ASTM E2231 – Practice for Specimen Preparation and Mounting of Pipe and Duct Insulation Materials to Assess Surface Burning Characteristics.
American Welding Society (AWS)
AWS A5.8 – Specification for Filler Metals for Brazing and Braze Welding
ASW D1.1 – Structural Welding Code – Steel
AWS D9.1 – Sheet Metal Welding Code
Manufacturers Standardization Society of the Valve and Fitting Industry (MSS)
MSS SP-45 – Bypass and Drain Connections
MSS SP-67 – Butterfly Valves
MSSSP-70 – Cast Iron Gate Valves, Flanged and Threaded Ends
MSS SP-71 – Gray Iron Swing Check Valves, Flanged and Threaded Ends
MSS SP-72 – Ball Valves with Flanged or Butt-Welding Ends for General Service
MSS SP-78 – Cast Iron Plug Valves, Flanged and Threaded Ends
MSS SP-80 – Bronze Gate, Globe, Angle and Check Valves
MSS SP-110 – Ball Valves Threaded, Socket-Welding, Solder Joint, Grooved and Flared Ends
National Electric Manufacturers Association (NEMA)
NEMA 250 – Enclosures for Electrical Equipment (1000 Volts Maximum)
National Fire Protection Association (NFPA)
NFPA 70 – National Electric Code
NFPA 90A – Installation of Air Conditioning and Ventilating Systems
NFPA 90B – Installation of Warm Air Heating and Air Conditioning Systems
NFPA 96 – Ventilation Control and Fire Protection of Commercial Cooking Operations
Steel Metal and Air Conditioning Contractors’ National Association (SMACNA)
SMACNA HVAC – Duct Construction Standards-Metal and Flexible
SMACNA – Fire, Smoke and Radiation Damper Installation Guide for HVAC Systems
Underwriters Laboratory, Inc. (UL)
UL 33 – UL Standard for Safety Heat Responsive Links for Fire-Protection Service
UL 181 – Standard for Safety Factory-Made Air Ducts and Connectors
UL 207 – Refrigerant Containing Components and Accessories, Non-Electrical
UL 429 – Electrically Operated Valves
UL 555 – UL Standard for Safety Fire Dampers
UL 723 – Test for Surface Burning Characteristics of Building Materials
3. Definitions
For the purpose of understanding this standard, the following definition applies:
Leak Tightness. No air leakage is measured or sensed at wall and roof penetrations, doors, windows, joints, electrical conduit, pipe and duct penetrations.
4. General Requirements
4.1 Duct pressure classification, construction and sealing shall be in accordance with SMACNA, HVAC Duct Construction Standards.
4.2 Materials and equipment shall be new and in perfect condition.
4.3 Pipe and duct insulation and covering, duct linings, vapor retarder facing, adhesive, fastener and tapes used in air distribution system shall be maximum flame spread of 25 and maximum smoke developed index of 50 when tested in accordance with ASTM E84 and ASTM E2231 or UL 723.
4.4 HVAC system installation work shall be performed in accordance with applicable safety codes, standards and regulations.
4.5 HVAC installation work shall meet the requirements of International standards, industry and national standards, regulations and codes listed in this standard.
4.6 Notwithstanding any testing and pre-qualification carried out by Company, it is the contractor responsibility to satisfy Company that the product to be supplied conforms to this standard. Additional evidence of compliance to this standard may be required prior to, during, or after tendering, and during installation and final turnover.
5. Workmanship
5.1 Labor shall be performed in a workmanlike manner by mechanics skilled in their particular trade.
5.2 Equipment shall be installed square and plumb and accessible for proper operation and service.
5.3 Duct and piping systems shall be installed as specified in this standard.
5.4 Installations shall be consistent in completeness and appearance whether enclosed or exposed.
5.5 Items that do not present a neat workmanlike appearance shall be replaced at the expense of the contractor.