CA CityofLosAngelesMechanicalCode 2014
$116.59
City of Los Angeles Mechanical Code
| Published By | Publication Date | Number of Pages |
| CA | 2014 | 497 |
This code includes the 2013 California Mechanical Codeยฉ with the City of Los Angeles amendments to that code (inserted as replacement pages) and a custom LA City binder bundled into one convenient publication.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | Preface |
| 4 | City of Los Angeles |
| 5 | City of Los Angeles Department of Building and Safety |
| 7 | Effective Use of the City of Los Angeles Mechanical Code |
| 8 | City of Los Angeles Table of Contents |
| 9 | Symbols and Notations in the Code for the City of Los Angeles |
| 10 | Preface |
| 11 | Acknowledgements |
| 12 | California Code of Regulations Title 24 California Agency Information Contact List |
| 13 | UMC Foreword |
| 14 | Table of Contents Chapter 1 Division I California Administration Chapter 1 Division II Administration |
| 15 | Chapter 2 Definitions Chapter 3 General Requirements |
| 17 | Chapter 4 Ventilation Air Supply |
| 18 | Chapter 5 Exhaust Systems |
| 19 | Chapter 6 Duct Systems |
| 20 | Chapter 7 Combustion Air Chapter 8 Chimneys and Vents |
| 21 | Chapter 9 Installation of Specific Appliances |
| 23 | Chapter 10 Steam and Hot Water Boilers |
| 24 | Chapter 11 Refrigeration |
| 26 | Chapter 12 Hydronics Chapter 13 Fuel Gas Piping |
| 29 | Chapter 14 Process Piping Chapter 15 Solar Systems Chapter 16 Stationary Power Plants Chapter 17 Referenced Standards Appendices Table of Contents Appendix A Residential Plan Examiner Review Form for HVAC System Design Appendix B Procedures to be Followed to Place Gas Equipment in Operation Appendix C Installation and Testing of Oil (Liquid) Fuel-Fired Equipment Appendix D Unit Conversion Tables Appendix E Sustainable Practices Appendix F Sizing of Venting Systems Serving Appliances Equipped with Draft Hoods, Category I Appliances, and Appliances Listed for Use with Type B Vents Appendix G Example Calculation of Outdoor Air Rate Index History Note |
| 30 | How to Distinguish Model Code Language from California Amendments |
| 31 | Related Publications and Services |
| 34 | California Matrix Adoption Tables |
| 36 | Chapter 1 – Administration |
| 38 | Part I โ General 101.0 Title, Scope, and General. 101.1 Title. 101.2 Purpose. 101.3 Scope. 101.3.1 Conflicts. 101.3.1.1 Conflicts Between Codes. 101.3.2 Design and Testing. 101.3.3 Appendices. 102.0 Application to Existing Mechanical Systems. 102.1 Additions, Alterations, or Repairs. 102.2 Existing Installations. 102.3 Changes in Building Occupancy. 102.4 Maintenance. TABLE |
| 39 | 102.4.1 Commercial HVAC Systems. 102.4.2 Residential HVAC Systems. 102.5 Moved Buildings. 102.6 Existing Buildings. 103.0 Alternate Materials and Methods of Construction Equivalency. 103.1 General. 104.0 Modifications. 105.0 Testing. 105.1 General. 105.2 Approved Standards. 105.3 Request by the Authority Having Jurisdiction. Part II โ Organization and Enforcement. 106.0 Powers and Duties of the Department. 106.1 General. 106.2 Interpretation. 106.3 Right of Entry. |
| 40 | 106.4 Stop Orders. 106.5 Authority to Disconnect Utilities in Emergencies. 106.6 Authority to Condemn Equipment. 106.7 Connection After Order to Disconnect. 106.8 Liability. 106.9 Cooperation of Other Officials and Officers. 107.0 Unsafe Equipment. 107.1 General. 108.0 Appeals. 109.0 Prohibited Acts. 110.0 Penalties. 110.1 General. |
| 41 | Part III โ Permits and Inspections. 111.0 Permits. 111.1 General. 111.2 Permit Required. 111.3 Separate Permit. 111.4 Incidental Gas. 112.0 Application for Permit. 112.1 Applications. |
| 42 | 112.2 Plans and Specifications. 112.3 Information on Plans and Specifications. 112.4 Qualified Installer. |
| 43 | 113.0 Permit Issuance. 113.1 Issuance. 113.2 Effect of Issuance. 113.3 Expiration of Permits. 113.4 Revocation of Permits. 114.0 Permit Fees. 114.1 Permit Fees. Permit Fee Schedule for Heating, Ventilating, Air-Conditioning and Refrigeration Equipment and Miscellaneous Heat-Producing Appliances |
| 44 | 114.2 Plan Check Fees. |
| 45 | 114.3 Expiration of Plan Check. 114.4 Minimum Inspection Fee. 114.5 Fees for Miscellaneous Permits. 114.6 Investigation Fee. 114.7 Transfer of Permits and Plan Checks. |
| 46 | 114.8 Fees for Additional Inspections. 114.9 Inspection Fees for Off-Hours Inspections. 114.10 Fees for Off-Site Inspections. 115.0 Inspections. 115.1 Inspection. 115.2 Request for Inspection. 116.0 Connection Approval. 116.1 Connection Approval. |
| 47 | 116.2 Final Inspection. 117.0 Unconstitutional. 117.1 Validity of Code. 118.0 Validity. 118.1 Code. 119.0 Registration. 119.1 Maintenance Supervisor. 119.2 Applications. 119.3 Examinations. 119.4 Failure to Pass Examination. 119.5 Issuance of Certificate. |
| 48 | 119.6 Revocation, Suspension and Voiding of Certificates. 119.7 Exhibition of Maintenance Certificate. 119.8 Transfer of Certificates. 119.9 Expired Certificates. |
| 50 | Chapter 2 โ Definitions |
| 52 | 201.0 General. 201.1 Applicability. 202.0 Accepted Meanings. 202.1 General. 203.0 โAโ |
| 53 | 204.0 โBโ 205.0 โCโ |
| 55 | 206.0 โDโ |
| 56 | 207.0 โEโ 208.0 โFโ |
| 57 | 209.0 โGโ |
| 58 | 210.0 โHโ 211.0 โIโ |
| 59 | 212.0 โJโ 213.0 โKโ 214.0 โLโ |
| 60 | 215.0 โMโ 216.0 โNโ |
| 61 | 217.0 โOโ 218.0 โPโ |
| 62 | 219.0 โQโ 220.0 โRโ |
| 63 | 221.0 โSโ 222.0 โTโ |
| 64 | 223.0 โUโ 224.0 โVโ |
| 65 | 225.0 โWโ 226.0 โXโ 227.0 โYโ 228.0 โZโ |
| 66 | Chapter 3 โ General Requirements |
| 68 | 301.0 General. 301.1 Applicability. 302.0 Approval. 302.1 How Obtained. 302.2 Complying Design of Equipment. 302.3 Oil-Burning Appliances. 303.0 Installation. 303.1 Installation Practices. 303.2 Listed Appliances. 303.3 Room Large in Comparison to Size of Equipment. 303.4 Unlisted Appliances. 303.5 Anchorage of Appliances. 303.6 Movement. 303.7 Identification of Equipment. 303.8 Liquefied Petroleum Gas Facilities. TABLE |
| 69 | 303.8.1 Liquefied Petroleum Gas Appliances. 303.9 Equipment on Roofs. 303.9.1 Roof Support. 303.9.2 Corrosion Resistance. 303.9.3 Roof Drainage and Rails. 303.9.4 Electrical Power. 304.0 Service and Access to Equipment and Appliances. 304.1 General. 304.2 Access to Equipment and Appliances on Roofs. 304.2.1 Access from Inside. 304.2.1.1 Door or Scuttle. 304.2.1.2 Permanent Ladders. 304.2.2 Permanent Lighting. 304.2.3 Standing Water. 305.0 Automatic Control Devices. 305.1 General. |
| 70 | 306.0 Standards. 306.1 General. 307.0 Labeling. 307.1 Marking. 307.2 Fuel-Burning Appliances. 307.3 Electric Heating Appliances. 307.4 Heat Pump and Electric Cooling Appliances. |
| 71 | 308.0 Location. 308.1 Protection Against Damage. 308.1.1 Physical Damage. 308.1.2 Access from the Outside. 308.1.3 Cellulose Nitrate Plastic Storage. 308.2 Protection Against Flood Damage. 308.2.1 Walls Below Buildings in Flood Hazard Areas Subject to High Velocity Wave Action. 308.2.2 Air Exhaust and Intake Openings. 309.0 Improper Location. 309.1 General. 310.0 Electrical Connections. 310.1 General. 311.0 Workmanship. 311.1 Engineering Practices. 311.2 Concealing Imperfections. 312.0 Condensate Wastes and Control. 312.1 Condensate Disposal. 312.2 Condensate Control. |
| 72 | 312.3 Condensate Waste Sizing. 312.4 Fuel-Burning Appliance Condensate Drains. 312.5 Condensate Waste. 312.6 Point of Discharge. 312.7 Plastic Fittings. 313.0 Personnel Protection. 313.1 General. 314.0 Heating or Cooling Air System. 314.1 Source. 314.2 Air Filters. 314.3 Prohibited Source. Table 312.3 Minimum Condensate Pipe Size |
| 73 | 314.4 Return-Air Limitations. 315.0 Water Supply. 315.1 General. 316.0 Pipe, Tube Hangers, and Supports. 316.1 General. 316.2 Suspended Piping. 316.3 Piping Support. 316.4 Strength. 316.5 Hanger Rod Sizes. 316.6 Gas Piping. 316.7 In Ground. 317.0 Balancing. 317.1 General. 318.0 Louvers in Hurricane Prone Regions. 318.1 General. 318.1.1 Testing. 318.1.2 Impact Resistance Test. 319.0 Protection of Piping, Materials, and Structures. 319.1 General. 320.0 Sleeves for Piping. 320.1 General. 320.2 Bearing. 320.3 Sealing. 320.4 Through Firewall. 321.0 Cutting Structure. 321.1 General. Table 316.5 Hanger Rode Sizes |
| 74 | 322.0 Ratproofing. 322.1 General. 322.2 Ductwork or Pipes. 323.0 Scope. 323.1 Applicability. 323.2 Services/Systems and Utilities. 324.0 Steam and Hot-Water Systems. 324.1 Requirements for Hospitals and Optional Services Provided in Correctional Treatment Centers. 324.1.1 Boilers shall have the capacity, based upon the rest ratings published by the Hydronics Institute or another acceptable national standard to supply the normal operating requirements of all connected systems and equipment. 324.1.2 A minimum of two boilers shall be provided. 324.1.3 Boiler systems providing space heating shall be designed to maintain a minimum temperature of 60ยฐF (15.6ยฐC) in general patient areas and the temperatures specified in Table 325.0 for sensitive areas during periods of breakdown or maintenance of any one boiler. 324.1.4 Boiler feed pumps, condensate return pumps, fuel oil pumps, and heating circulating pumps shall be connected and installed to provide standby service in the event of pump failure. 324.1.5 At least two sources of heat (e.g. two pieces of equipment) shall be provided for supplying essential services such as sterilizers, hot water for dishwashing, and domestic hot water for minimum patient service, such as handwashing and baths. 324.2 Requirements for Skilled Nursing, Intermediate CareFacilities and Basic Services Provided in CorrectionalTreatment Centers. 324.2.1 Boilers, if provided, shall accommodate Section 324.1. 324.2.2 Two or more interconnected water heaters are an acceptable means to provide two sources of heat for hot water (See Section 324.1.5). 325.0 Air Conditioning and Heating Systems. 325.1 Requirements for Hospitals and Optional Services Provided in Correctional Treatment Centers. 325.1.1 The systems shall be designed to provide the temperatures and relative humidity for sensitive areas or rooms shown in Table 325.0. 325.1.2 For occupied areas not shown in Table 325.0, heating systems shall be designed to provide 70ยฐF to75ยฐF (21.1ยฐC to 23.9ยฐC) based on the Median of Extremes shown by the 1982 ASHRAE Climatic Data for Region X and ASHRAE 1994 Supplement to Climatic Data for Region X. 325.1.3 For occupied areas not shown in Table 325.0, cooling systems shall be designed to provide 75ยฐF (23.9ยฐC) maximum based on the 0.5 percent summer design dry bulb temperatures shown by the 1982 ASHRAE Climatic Data for Region X and ASHRAE 1994 Supplement to Climatic Data for Region X. 325.2 Requirements for Skilled Nursing, Intermediate Care Facilities and Basic Services Provided in Correctional Treatment Centers 325.2.1 Systems shall accommodate the provisions of Section 325.1.2 through 325.1.3. 325.2.2 Where air conditioning is provided, the system shall be thermostatically controlled in one or more zones. 325.3 Requirements for Outpatient Facilities and Licensed Clinics. 325.3.1 The system shall be designed to provide the temperature and humidities for sensitive areas for rooms shown in Table 325.0. |
| 75 | 326.0 Essential Mechanical Provisions. 326.1 (Does not apply to OSHPD 3 surgical clinic.) All heating equipment necessary to maintain a minimum temperature of 60ยฐF (15.6ยฐ) in patient areas which are not specified in Table 325.0. 326.2 All heating equipment necessary to maintain the minimum temperatures for sensitive areas as specified in Table 325.0. 326.3 Equipment necessary for humidification of the areas listed in Table 325.0. 326.4 All supply, return, and exhaust fans required to maintain the positive and negative air balances as required in Table 4-A. 326.5 All control components and control systems necessary for the normal operation of equipment required to have essential electrical power. 326.6 Alarms for airborne infection isolation rooms and protective environment rooms Table 325.0 Heating, Cooling, and Relative Humidity Requirements for Sensitive Areas or Rooms |
| 76 | Table 303.3(1) Clearances, in inches, with Specified Forms of Protection |
| 77 | Table 303.3(2) Chimney Connector and Vent Connector Clearances from Combustible Materials |
| 78 | Table 303.3(3) Capacities of Listed Metal Appliance Connectors for Use with Gas Pressure 8-inch or More Water Column Table 303.3(4) Capacities of Listed Metal Appliance Connectors for Use with Gas Pressures Less than 8-inch Water Column |
| 79 | Table 303.4 Standard Installation Clearances in Inches for Unlisted Heat-Producing Appliances |
| 81 | Table 316.2 Hanger and Supports |
| 82 | Chapter 4 โ Ventilation Air Supply |
| 84 | 401.0 General. 401.1 Applicability. 402.0 Ventilation Air. 402.1 General Requirements. 402.1.1 Construction Documents. 402.1.2 Dwelling. 402.2 Natural Ventilation. 402.2.1 Location and Size of Openings. 402.2.2 Control and Accessibility. 402.3 Mechanical Ventilation. 402.4 Outdoor Air Intake Protection. 402.4.1 Weather Protections. 402.5 Bathroom Exhaust Fans. 403.0 Ventilation Rates. 403.1 General. 403.2 Zone Calculations. 403.2.1 Breathing Zone Outdoor Airflow. TABLES |
| 85 | 403.2.2 Zone Air Distribution Effectiveness. 403.2.3 Zone Outdoor Airflow. 403.3 Single-Zone Systems. 403.4 One Hundred Percent Outdoor Air Systems. 403.5 Multiple-Zone Recirculating Systems. 403.5.1 Primary Outdoor Air Fraction. 403.5.2 System Ventilation Efficiency. 403.5.3 Uncorrected Outdoor Air Intake. 403.5.4 Outdoor Air Intake. 403.6 Design for Varying Operating Conditions. 403.6.1 Short-Term Conditions. |
| 86 | 403.7 Exhaust Ventilation. 403.8 Dynamic Reset. 403.9 Exhaust Ventilation for Enclosed Parking Garages. 403.9.1 Alternative Exhaust Ventilation for Enclosed Parking Garages. 403.9.1.1 Minimum Exhaust Rate. 403.9.1.2 Exhaust Inlet Distribution. 403.9.1.3 Exhaust System Operation. 404.0 Multiple-Zone Systems. 404.1 General. 404.2 Zone Ventilation Efficiency. 404.2.1 Single Supply Systems. 404.2.2 General Case. |
| 87 | 405.0 Evaporative Cooling System for Health Care Facilities. 406.0 Reserved. 407.0 Ventilation System Details. 407.1 General. 407.1.1 All supply-air, return air, and exhaust-air systems shall be mechanically operated and such systems for areas listed in Table 4-A shall be operated continuously. 407.1.2 Fans serving exhaust systems shall be located at the discharge end of the system. 407.1.3 Services/Systems and Utilities. 407.2 Outdoor Air Intakes and Exhaust Outlets. 407.2.1 Outdoor Air Intakes. 407.2.2 Exhaust Outlets. |
| 88 | 407.2.3 Relief Air Discharge. 407.3 Air Balance. 407.3.1 The ventilation systems shall be designed and balanced to provide the general air balance relationship to adjacent areas, shown in Table 4-A. 407.3.2 Where the variation in static pressure drop across filters is a significant portion of the total pressure drop, static pressure or pressure differential controls or constant volume devices may be required to ensure the maintenance of air balance relationships shown in Table 4-A regardless of filter loading. 407.4 Air Circulation. 407.4.1 Design of the ventilation system shall provide air movement that is generally from clean to less clean areas. 407.4.1.1 Air supplied to operating rooms, cesarean operating rooms, cardiac catheterization labs, cystoscopy rooms, delivery rooms, and nurseries shall be delivered at or near the ceiling of the area served. 407.4.1.2 Room supply air outlets and room recirculation and exhaust air inlets installed in nonsensitive areas shall be located not less than 3 inches (76 mm) above the floor. 407.4.1.3 Corridors shall not be used to convey supply, return, or exhaust air to or from any room if the corridor is required to be of fire resistive construction per the California Building Code. 407.4.1.4 No space above a ceiling may be utilized as an outside-air, relief-air, supply-air, exhaust-air, or return-air plenum. 407.4.1.5 Air from a patient room, exam room, treatment room shall not be transferred to another similar room without first having passed through air filters as required by Table 4-B or Table 4-C. 407.4.1.6 Supply outlets and return and exhaust air inlets shall be located to prevent short-circuiting. 407.5 Variable Air Volume. 407.5.1 Variable Air Volume Systems (VAV). 407.5.1.1 The VAV system shall comply with code requirements for outside air, total air, and pressure relationship through the full range of operation from minimum to maximum. 407.5.1.2 The central return or exhaust fan shall be controlled to accomplish the variable air volume requirements of the individual rooms served by the fan as described in Section 407.5.1.3. 407.5.1.3 Variable air volume for return or exhaust air shall be accomplished by utilizing an automatic modulating damper in the return or exhaust air for each zone. 408.0 Filters. 408.1 General. 408.1.1 A filter gauge shall be installed across each filter bank serving central air systems. |
| 89 | 408.1.2 Central air-handling systems are defined as any unit requiring duct work on the supply or inlet side that serve more than one room. 408.1.3 Filter banks shall be visually inspected for torn media and bypass in filter frames by means of a flashlight or equivalent, both with fans in operation and stopped. 408.1.4 Central air-handling systems shall be maintained in a reasonably clean condition during construction and shall be cleaned as necessary prior to replacement of temporary filter used during construction to ensure that clean air will be delivered to the occupied spaces. 408.1.5 Filter bank No. 1 shall be located upstream of the air-conditioning equipment. 408.1.6 Filter bank No. 2 and filter bank No. 3 media shall be rigid or supported (noncollapsing type) and shall operate on the principles of impingement, straining, and diffusion. 408.2 Filters for Hospitals. 408.2.1 All air-ventilation systems shall comply with code requirements of this section and shall have filter bank efficiencies as listed in Table 4-B. 408.2.2 Noncentral recirculating air systems providing cooling to high heat producing equipment located in nonsensitive areas shall have a filter with 30 percent average efficiency based on ASHRAE 52.2-2007 or a minimum efficiency reporting value (MERV) of 8 based on ASHRAE 52.2-2007. 408.2.3 Noncentral air systems serving any areas not listed in Table 4-B shall be provided with filter arrangement and efficiency specifically approved by the enforcing agency. 408.2.4 Noncentral recirculating air handling systems, for example, through-the-wall units, fan coil units, and heat pumps may be utilized for single patient rooms of one or more beds. 408.3 Filters for Skilled Nursing Facilities, Intermediate Care Facilities, and Correctional Treatment Centers. 408.3.1 The air ventilation systems shall comply with code requirements of this section for skilled nursing facilities, intermediate care facilities and correctional treatment centers and shall have filter bank efficiencies as listed in Table 4-C. 408.3.2 Noncentral air systems serving single patient rooms of one or more beds shall comply with Table 4-C. 408.3.3 Noncentral recirculating air-handling systems, i.e. through the wall units, may be utilized for each patient room with one or more beds. 408.3.4 Airborne infection isolation rooms, protective environment rooms, and sensitive areas in correctional treatment centers shall comply with Section 408.2. 408.4 Filters for Outpatient Facilities. 408.4.1 The air ventilation systems shall comply with code requirements of this section for outpatient facilities and shall have filter bank efficiencies as listed in Table 4-B. 408.4.2 Noncentral air systems serving individual rooms shall comply with Table 4-B. 409.0 Ducts. 409.1 Ducts which penetrate construction, intended for X-ray or other radiation protection, shall not impair the effectiveness of the protection. 409.2 Duct linings and their use shall meet the requirements of Chapter 6, California Mechanical Code. 409.3 Insulation of Ducts. 409.4 The anchorage and supporting structural elements for airducts shall be designed to withstand the lateral forces as required by the California Building Code, Title 24, Part 2. 410.0 Laboratory Ventilating Systems and Hoods. 410.1 Laboratory Ventilating Systems. 410.2 Exhaust Hoods and Safety Cabinets. |
| 90 | 410.3 Laboratory Fume Hoods. 410.3.1 General Standard. 410.3.2 Special Standards for Use with Strong Oxidants. 410.3.3 Special Standards for Use with Infectious or Radioactive Materials. 411.0 Kitchen and Dining Areas. 411.1 The air from dining areas may be used to ventilate the food preparation areas only after it has passed through a filter with at least an 80 percent average efficiency based on ASHRAE 52.2-2007 or a minimum efficiency reporting value (MERV) of 13, based on ASHRAE 52.2-2007. 412.0 Boiler, Mechanical, and Electrical Rooms. 412.1 Boiler, heater and electrical equipment rooms shall be provided with outdoor air so as to maintain combustion rates of equipment and temperatures in the rooms and in adjoining areas as rated in this chapter. 412.2 Floor surfaces in occupied spaces above such rooms should not exceed a temperature of 85ยฐF (29.4ยฐC), and suitable insulation may be required. 413.0 Odorous Rooms. 413.1 Rooms in areas where excessive heat or moisture is generated, where objectional odors or dust are present, or where flammable or toxic gases may accumulate, which are used by health facility personnel or patients, shall be provided with exhaust ventilation to change the air a minimum of ten times per hour. 413.2 Kitchen, morgues and laundries located inside a hospital building or skilled nursing facility in which patients are accommodated, or treated, shall be ventilated with exhaust systems which will provide a minimum of ten air changes per hour and prevent odors from entering patient areas. 414.0 Airborne Infection Isolations Rooms. 414.1 Exhaust Systems. 414.1.1 Exhaust discharge from fan shall extend at least 7 feet (2134 mm) above the roof and discharge vertically upward. |
| 91 | 414.1.2 Exhaust shall discharge above roof level and through an accessible HEPA filter. 414.2 Air Distribution. 415.0 Protective Environment Rooms. 415.1 Air Distribution. 416.0 Alarms โ Airborne Infection Isolation Rooms and Protective Environment Rooms. 416.1 An alarm system which is based on static pressure control, volumetric control, or directional flow measurement shall be provided for each isolation room. 416.2 Other acceptable alarm systems will be allowed when designs are specifically approved by the enforcing agency. 416.3 [For OSHPD 4] For correctional treatment centers, the alarm system shall not create false alarms or security hazards. 416.4 Prior to acceptance of the rooms, the alarm system shall be tested and operated to demonstrate to the owner or designated representative that the installation and performance of the system conforms to design intent. 417.0 Testing and Balancing Airborne Infection Isolation Rooms and Protective Environment Rooms. 418.0 Design Requirements for Ethylene Oxide (ETO) Sterilization Areas. 418.1 Air Changes. 418.2 Exhaust Requirements. 418.2.1 All air from the ETO sterilizer equipment room shall be exhausted to the outside by a dedicated system or other approved method. 418.2.2 The exhaust fan for the dedicated system shall be located at the discharge point of the system and identified as ETO Equipment Room Exhaust. 418.2.3 Discharge Point. 418.3 Ventilation Requirements. 418.3.1 Aeration Units. 418.3.2 Capture Box. |
| 92 | 418.3.3 Cylinder Change. 418.3.4 Sterilizer Relief Valve. 418.3.5 Ventilation of Sterilizer Door Area. 418.4 Gas Valves. 418.5 Alarm Systems. |
| 93 | Table 4-A Pressure Relationship and Ventilation Requirements for General Acute Care Hospitals, Skilled Nursing Facilities, Intermediate Care Facilities, Correctional Treatment Centers, Outpatient Facilities, and Licensed Clinics |
| 96 | Table 4-B Filter Efficiencies for Central Ventilation and Air-Conditioning Systems in General Acute Care Hospitals, Acute Psychiatric Hospitals, Outpatient Facilities and Licensed Clinics Table 4-C Filter Efficiencies for Central Ventilation and Air-Conditioning Systems in Skilled Nursing Facilities and Intermediate Care Facilities and Correctional Treatment Centers |
| 97 | Table 402.1 Minimum Ventilation Rates in Breathing Zone |
| 99 | Table 403.2.2 Zone Air Distribution Effectiveness Table 403.5.2 System Ventilation Efficiency |
| 100 | Table 403.7 Minimum Exhaust Rates |
| 102 | Chapter 5 โ Exhaust Systems |
| 104 | 501.0 General. 501.1 Applicability. Part I โ Environmental Air Ducts and Product-Conveying Systems. 502.0 Product-Conveying Ducts Classification. 502.1 General. 503.0 Motors, Fans, and Filters. 503.1 General. 503.2 Fans. 503.3 Air Filters. 504.0 Environmental Air Ducts. 504.1 Makeup and Exhaust-Air Ducts. 504.2 Domestic Range Vents. 504.3 Clothes Dryers. TABLES FIGURES |
| 105 | 504.3.1 Domestic Clothes Dryers. 504.3.1.1 Domestic Dryer Vents. 504.3.1.2 Length Limitation. 504.3.2 Commercial Clothes Dryers. 504.4 Heat (Energy) Recovery Ventilators. 504.5 Termination of Environmental Air Ducts. 504.6 Gypsum Wallboard Ducts. 505.0 Design of Product-Conveying Ventilation Systems. 505.1 General. 505.1.1 Incompatible Materials. 505.1.2 Flammability Limit. 505.2 Minimum Velocities and Circulation. |
| 106 | 505.3 Makeup Air. 505.4 Hoods and Enclosures. 505.5 Pharmacies โ Compounding Area of Parenteral Solutions. 505.5.1 Pharmacies โ Laminar Flow Biological Safety Cabinet. 506.0 Product-Conveying Ducts. 506.1 Materials. 506.2 Construction. Table 505.2 Minimum Conveying Velocities |
| 107 | Table 506.2(1) Minimum Sheet Metal Thickness for Round Ducts for Product-Conveying System Ducts |
| 108 | 506.3 Fittings. 506.4 Explosion Venting. 506.5 Supports. 506.5.1 Loads. |
| 109 | 506.5.2 Corrosion. 506.5.3 Vibration and Stress. 506.5.4 Expansion and Contraction. 506.6 Fire Protection. 506.7 Duct Clearances. 506.7.1 Spacers and Ties. Table 506.2(2) Minimum Sheet Metal Thickness for Rectangular Ducts |
| 110 | 506.7.2 Air Circulation. 506.7.3 Wool Batts Insulation. 506.7.4 Insulation Board. 506.7.5 Clearance with Wall Protector/Surface. 506.7.6 High Temperature Duct Systems. 506.7.7 Reduced Clearance. Table 506.7 Reduction of Duct Clearance with Specified Forms of Protection Figure 506.7 Extent of Protection Required to Reduce Clearances from Ducts |
| 111 | 506.7.7.1 Wall Protector. 506.7.7.2 Single Flat Wall. 506.7.7.3 Wall Protectors that Cover Two Walls. 506.8 Protection from Physical Damage. 506.9 Exhaust Outlets. Part II โ Commercial Hoods and Kitchen Ventilation. 507.0 General Requirements. 507.1 Exhaust System. 507.2 Clearance. 507.2.1 Listed. 507.2.2 Clearance Reduction. 507.2.2.1 Mineral Wool Batts or Ceramic Fiber Blanket. 507.2.2.2 Zero Clearance. |
| 112 | 507.2.3 Clearance Integrity. 507.2.3.1 Fire. 507.2.3.2 Required Protection. 507.2.3.3 Protection Methods. 507.2.4 Factory Built. 507.2.5 Field Applied. 507.2.6 Both Field-Applied and Factory Built. 507.2.6.1 Physical Damage. 507.2.6.2 Specification. 507.2.6.3 Clearance Options. 507.2.7 Noncombustible Materials. 507.2.7.1 Corrosion Protection. 507.2.7.2 Zero Clearance. 507.2.8 Clearance Between Duct and Interior Surfaces. 507.3 Drawings. 507.4 Notification of Change. |
| 113 | 508.0 Hoods. 508.1 Where Required. 508.1.1 Construction. 508.1.2 Grease Vapor. 508.2 Seams, Joints and Penetrations. 508.2.1 Internal Welding. 508.2.2 Sealed. 508.2.3 Listed Sealant. 508.2.4 Construction of Listed Exhaust Hoods. 508.2.5 Assembly of Listed Exhaust Hoods. 508.2.6 Duct Construction. 508.2.7 Duct Connection. 508.2.8 Insulation Flame Spread Rating. 508.2.9 Adhesives or Cements. Figure 508.2.6 Typical Section of Eyebrow-Type Hood |
| 114 | 508.2.10 Listed Devices. 508.2.11 Hood Penetration. 508.3 Insulation. 508.4 Hood Size. 508.4.1 Canopy Size and Location. 508.4.1.1 Capacity of Hoods. 508.4.1.2 Solid-Fuel Cooking Equipment. 508.4.1.3 High Temperature Appliances. 508.4.1.4 Medium Temperature Appliances. 508.4.1.5 Medium to Low Temperature Appliances. 508.4.2 Capacity for Noncanopy Hoods. 508.5 Exhaust Hood Assemblies with Integrated Supply-Air Plenums. |
| 115 | 508.5.1 Outer Shell. 508.5.2 Inner Shell. 508.5.3 Fire Dampers. 508.5.3.1 Listing. 508.5.3.2 Actuating Temperature. 508.5.4 Exemption. 508.6 Listed Hood Assemblies. 508.7 Solid-Fuel Hood Assemblies. 508.8 Listed Ultraviolet Hoods. 508.9 Exhaust Outlets. 509.0 Grease Removal Devices in Hoods. 509.1 Grease Removal Devices. 509.2 Installation. 509.2.1 Vertical Distance. 509.2.2 Grease Removal Device Protection. 509.2.2.1 Installation. 509.2.2.2 Size and Location. 509.2.2.3 Clearance. 509.2.3 Grease Filters. 509.2.3.1 Arrangement. 509.2.3.2 Accessibility. 509.2.3.3 Angled Installation. 509.2.3.4 [DPH] Grease filters shall be Class I when tested in accordance with the test method in SFM 12-71-1. |
| 116 | 509.2.4 Grease Drip Trays. 509.2.4.1 Size and Pitch. 509.2.5 Grease Filter Orientation. 509.3 Solid-Fuel Grease Removal Devices. 510.0 Exhaust Duct Systems. 510.1 General. 510.1.1 Fire Hazards. 510.1.2 Interconnection. 510.1.3 Duct Installation. 510.1.4 Accessibility. 510.1.5 Sign. 510.1.6 Bracing and Supports. 510.1.7 Ducts, Non-Grease. 510.2 Clearance. 510.2.1 Installation. 510.3 Openings. 510.3.1 Access Panel. 510.3.2 Access for Cleaning and Inspection. 510.3.3 Openings in Ducts. 510.3.3.1 Horizontal Ducts. 510.3.3.1(A) Cleaning. 510.3.3.1(B) Safe Access and Work Platform. 510.3.3.1(C) Support. 510.3.3.2 Nonlisted Ductwork. |
| 117 | 510.3.3.3 Vertical Ducts. 510.3.3.3(A) Access. 510.3.3.4 Access Panels. 510.3.3.5 Fire Protection System Devices. 510.4 Listed Grease Ducts. 510.5 Other Grease Ducts. 510.5.1 Materials. 510.5.2 Installation. 510.5.2.1 Welded Duct Connection. 510.5.2.2 Butt Welded Connections. 510.5.2.3 Inside Duct Section. 510.6 Exterior Installations. 510.6.1 Weather Protection. Figure 510.5.2 Permitted Duct-To Hood Collar Connection |
| 118 | 510.7 Interior Installations. 510.7.1 Minimum Requirements. 510.7.1.1 Less than Four Stories. Figure 510.5.2.1(1) Telescoping-Type Duct Connection Figure 510.5.2.1(2) Bell-Type Duct Connection Figure 510.5.2.1(3) Flange with Edge Weld Duct Connection Figure 510.5.2.1(4) Flange with Filled Weld Duct Connection |
| 119 | 510.7.1.2 Four Stories or More. 510.7.1.3 Clearance. 510.7.2 Materials. 510.7.2.1 Mechanical and Structural Integrity. 510.7.2.2 Protection from Physical Damage. 510.7.2.3 Inspection. 510.7.3 Listed. 510.7.4 Fire Doors. 510.7.5 Fire Zone. 510.8 Termination of Exhaust System. 510.8.1 Rooftop Terminations. |
| 120 | 510.8.1.1 Listed Flexible Connectors. 510.8.1.2 Inspection and Cleaning. 510.8.2 Wall Terminations. 510.9 Solid-Fuel Duct Systems. 511.0 Air Movement. 511.1 Exhaust Fans for Commercial Cooking Equipment. 511.1.1 Upblast Fans. Figure 510.8.2 Exhasut Termination Distance from Fresh Air Intake (FAI) or Operable Door or Window Figure 511.1.1 Upblast Fan Clearances |
| 121 | 511.1.2 In-Line Exhaust Fans. 511.1.2.1 Accessibility. 511.1.3 Utility Set Exhaust Fans. 511.1.3.1 At the Rooftop. 511.1.3.2 Within the Building. Figure 511.1.2(1) Typical Section of Duct-To-Fan Connection-Butt Joint Method Figure 511.1.2(2) Typical Section of Duct-To-Fan Connection-Overlapping Method Figure 511.1.2(3) Typical Section of Duct-To-Fan ConnectionโSealant Method Figure 511.1.2(4) Typical Section of Duct-To-Fan Connection-Direct To Fan Inlet Cone Method |
| 122 | 511.1.3.3 Duct Systems. 511.1.4 Construction. 511.1.5 Miscellaneous. 511.1.6 Standard. 511.2 Airflow. 511.2.1 Exceptions. 511.2.2 Exhaust-Air Volumes. 511.2.3 Operation. 511.3 Replacement Air. 511.4 Common Duct (Manifold) Systems. 511.4.1 Connections. 511.4.2 Fire Damper. 511.4.3 Construction and Clearance. 511.4.4 Adjustment. 511.4.5 Adjustment Location. 511.4.6 Bleed Air Duct. 511.4.7 Disconnect. 511.5 Solid-Fuel Air Movement Requirements. 512.0 Auxiliary Equipment. 512.1 Dampers. 512.1.1 Use. 512.2 Electrical Equipment. |
| 123 | 512.2.1 Device Installation in Ducts. 512.2.2 Location. 512.2.3 Concealed Spaces. 512.2.4 Listed Lighting Units. 512.2.5 Standard. 512.3 Other Equipment. 512.3.1 Fire-Extinguishing System. 512.3.2 Air Recirculation. 512.4 Solid-Fuel Auxiliary Equipment. 513.0 Fire-Extinguishing Equipment. 513.1 General. 513.1.1 Protection. 513.2 Types of Equipment. 513.2.1 Identification. 513.2.2 Standard. 513.2.3 Existing Systems. 513.2.4 Modification of Existing Hood Systems. 513.2.4.1 Sealing. |
| 124 | 513.2.4.2 Obstructions. 513.2.4.3 System Re-evaluation. 513.2.5 Fixed Baffle Hoods with Water Wash. 513.2.5.1 Domestic Water Supply. 513.2.5.2 Control Valve. 513.2.5.3 Activation. 513.2.5.4 Water-Wash System. 513.2.5.5 Exception. 513.2.5.6 Water Supply. 513.2.6 Water Valve Supervision. 513.3 Simultaneous Operation. 513.3.1 Automatic Sprinkler System. 513.3.2 Dry or Wet Chemical Systems. 513.4 Fuel Shutoff. 513.4.1 Steam. 513.4.2 Protection Not Required. 513.4.3 Manual Reset. 513.5 Manual Activation. 513.5.1 Location of Manual Activation Device. 513.5.2 Automatic Sprinkler System. 513.5.3 Manual Actuator(s). |
| 125 | 513.5.4 Standby Power Supply. 513.6 System Annunciation. 513.6.1 Signaling. 513.7 System Supervision. 513.7.1 Automatic Fire-Extinguishing System. 513.7.2 Supervision. 513.7.3 Listed Water Wash System. 513.8 Special Design and Application. 513.8.1 Single Device. 513.9 Review and Certification. 513.10 Installation Requirements. 513.11 Portable Fire Extinguishers. 513.11.1 Permitted Use. 513.11.2 Other Fire Extinguishers. 513.12 Solid-Fuel Fire-Extinguishing Equipment. 514.0 Procedures for the Use, Inspection, Testing, and Maintenance of Equipment. 514.1 Operating Procedures. 514.1.1 Filters. 514.1.2 Openings. 514.1.3 Posting of Instructions. 514.1.4 Listing and Manufacturerโs Instructions. 514.1.5 Nonoperational. 514.1.6 Secondary Control Equipment. 514.1.7 Inspection Frequency. |
| 126 | 514.2 Inspection. 514.2.1 Requirements. 514.2.2 Fusible Links and Sprinkler Heads. 514.2.3 Inspection Tag. 514.2.4 Temperature-Sensing Elements. 514.2.5 Certification. 514.3 Inspection for Grease Buildup. 514.4 Cleaning of Exhaust Systems. 514.4.1 Removal of Contaminants. 514.4.2 Electrical Switches. 514.4.3 Fire Suppression System. 514.4.4 Inoperable. 514.4.5 Solvents/Cleaning Aids. 514.4.6 Cleaning Chemicals. 514.4.7 Coating. 514.4.8 Access Panels and Cover Plates. 514.4.9 Date of Inspection. 514.4.10 Airflow. 514.4.11 Operable State. 514.4.12 Certification of Service. 514.4.13 Report Provided. Table 514.3 Exhaust System Inspection Schedule |
| 127 | 514.4.14 Unclean Area. 515.0 Minimum Safety Requirements for Cooking Equipment. 515.1 Cooking Equipment. 515.1.1 Installation. 515.1.1.1 Re-evaluation. 515.1.1.2 Prior Location. 515.1.1.3 Minimum Space. 515.1.1.4 Space Not Required. 515.1.1.5 Minimum Height. 515.2 Operating Controls. 515.3 Cooking Equipment Maintenance. 515.3.1 Cleaning. 516.0 Recirculating Systems. 516.1 General Requirements. 516.2 Design Restrictions. 516.2.1 Gas/Electrically Fueled Cooking Appliances. 516.2.2 Recirculation. 516.2.3 Protection. 516.2.4 Maximum Limits. |
| 128 | 516.2.5 Label. 516.2.6 Fire Damper. 516.2.7 Installation of Electrical Wiring. 516.2.8 Power Supply. 516.2.9 Listing Evaluation. 516.3 Interlocks. 516.3.1 Airflow Sections. 516.3.2 Filter Component. 516.3.3 ESP Interlocks. 516.3.3.1 Manual Reset. 516.3.4 Minimum Airflow. 516.4 Location and Application Restrictions. 516.5 Additional Fire Safety Requirements. 516.5.1 Installation Downstream. 516.5.2 Locations. 516.6 Use and Maintenance. 516.6.1 Manufacturerโs Instructions. 516.6.2 Cleaning Schedule. 516.6.3 Hood Plenum and Blower Section Cleaning Schedule. 516.6.4 Inspection of Safety Interlocks. 516.6.5 Inspection. 516.6.6 Maintenance Log. |
| 129 | 517.0 Solid-Fuel Cooking Operations. 517.1 Venting Application. 517.1.1 Natural Draft. 517.1.2 System Compliance. 517.1.3 Makeup Air System. 517.1.4 Natural Draft Ventilation Systems. 517.1.5 Opening Requirements. 517.1.6 Spark Arresters. 517.2 Location of Appliances. 517.2.1 Prohibited Location. 517.2.2 Flammable Vapors. 517.3 Hoods for Solid-Fuel Cooking. 517.3.1 Separation. 517.4 Exhaust Systems for Solid-Fuel Cooking. 517.4.1 Hood. 517.4.2 Building Exceeding Four Stories. 517.4.3 Prohibition. 517.5 Grease Removal Devices for Solid-Fuel Cooking. 517.5.1 Spark Arrester Devices. 517.5.2 Filters. 517.6 Air Movement for Solid-Fuel Cooking. 517.6.1 Replacement Air. 517.6.2 Operation. |
| 130 | 517.7 Fire-Extinguishing Equipment for Solid-Fuel Cooking. 517.7.1 Grease Removal Devices, Hoods, and Duct Systems. 517.7.2 Standard. 517.7.3 Rating and Design. 517.7.4 Listing/Class. 517.7.5 Fixed-Water Pipe System. 517.7.6 Fuel Storage. 517.7.7 Auxiliary Fuel. 517.8 Other Safety Requirements. 517.8.1 Site-Built Solid Fuel Cooling Appliances. 517.8.2 Additional Devices. 517.8.3 Prohibition. |
| 132 | Chapter 6 โ Duct Systems |
| 134 | 601.0 General. 601.1 Applicability. 601.2 Sizing Requirements. 601.3 The performance criteria and requirements herein contemplate a duct that is a structural assembly having the capacity to support occupant health and safety while minimizing its own contribution to property damage under emergency conditions. 602.0 Material. 602.1 General. 602.2 Combustibles within Ducts or Plenums. |
| 135 | 602.3 Factory-Made Air Ducts. 602.3.1 Flexible Ducts. 602.4 Joints and Seams of Ducts. 602.5 Metal. 602.6 Tin. 602.7 Vibration Isolators. 603.0 Installation of Ducts. 603.1 General Ducts Under Floor or Crawl Space. 603.2 Metal Ducts. 603.2.1 Horizontal Round Ducts. 603.2.2 Tight-Fitting Around the Perimeter. |
| 136 | 603.2.3 Size of Circular Bands. 603.2.4 Connection. 603.2.5 Lateral Load. 603.3 Factory-Made Air Ducts. 603.4 Protection of Ducts. 603.5 Support of Ducts. 603.6 Protection Against Flood Damage. 604.0 Insulation of Ducts. 604.1 General. 604.2 [OSHPD 1, 2, 3 (surgical clinics) & 4] Thermalacoustical lining materials shall not be installed within ducts, terminal boxes, sound traps, and other in-duct systems serving areas such as operating, cesarean operating rooms, delivery rooms, post anesthesia care units, cystoscopy, cardiac cath labs, nurseries, intensive care units, newborn intensive care units, and airborne infection Isolation rooms unless terminal filters with 90 percent average efficiency based on ASHRAE Standard 52.2 or minimum efficiency rating value (MERV) of 14 are installed downstream of the duct lining. 604.3 [OSHPD 1, 2 & 4] Thermal or acoustical lining materials shall not be installed within ducts which are downstream of the 99.97 percent high-efficiency particulate air (HEPA) filter or with minimum efficiency rating value (MERV) of 17 required in Section 408.2.1 for protective environment rooms. 605.0 Smoke Dampers, Fire Dampers, and Ceiling Dampers. 605.1 Smoke Dampers. |
| 137 | 605.2 Fire Dampers. 605.3 Ceiling Radiation Dampers. 605.4 Multiple Arrangements. 605.5 Access and Identification. 605.6 Freedom from Interference. 605.7 Temperature Classification of Operating Elements. 605.8 When the automatic activation of a smoke damper or a combination smoke-fire damper occurs, the HVAC system serving such dampers shall immediately shut down. 606.0 Ventilating Ceilings. 606.1 General. 606.1.1 [OSHPD 1, 2, 3 & 4] Ventilating ceilings are not permitted in health facilities. 606.2 Requirements. 607.0 Use of Under-Floor Space as Supply Plenum for Dwelling Units. 607.1 General. 607.2 Dwelling Units. 607.3 Enclosed. 607.4 Flammable Materials. 607.5 Access. 607.6 Automatic Control. 607.7 Temperature Limit. |
| 138 | 607.8 Noncombustible Receptacle. 607.8.1 Location. 607.8.2 Area. 607.8.3 Perimeter. 607.9 Floor Registers. 607.10 Exterior Wall and Interior Stud Partitions. 607.11 Wall Register. 607.12 Distance from Combustible. 607.13 Vapor Barrier. 607.14 Prohibition. 608.0 Automatic Shutoffs. 608.1 General. |
| 140 | Chapter 7 โ Combustion Air |
| 142 | 701.0 Air for Combustion and Ventilation. 701.1 General. 701.1.1 Other Types of Appliances. 701.2 Pressure Difference. 701.3 Makeup Air. 701.4 Indoor Combustion Air. 701.4.1 Standard Method. 701.4.2 Known Air Infiltration Rate Method. 701.5 Indoor Opening Size and Location. FIGURES |
| 143 | 701.6 Outdoor Combustion Air. 701.6.1 Two Permanent Openings Method. Figure 701.5 Combustion Air from Adjacent Indoor Spaces through Indoor Combustion Air Openings Figure 701.6.1(1) Combustion Air from Outdoors Inlet Air from Ventilated Crawl Space and Outlet Air to Ventilated Attic Figure 701.6.1(2) Combustion Air from Outdoors through Ventilated Attic |
| 144 | 701.6.2 One Permanent Opening Method. 701.7 Combination Indoor and Outdoor Combustion Air. 701.7.1 Indoor Openings. 701.7.2 Outdoor Openings. 701.7.3 Outdoor Opening(s) Size. 701.8 Engineered Installations. 701.9 Mechanical Combustion Air Supply. 701.9.1 Exhaust Fans. 701.9.2 Interlock. 701.9.3 Specified Combustion Air. Figure 701.6.1(3) Combustion Air from Outdoors through Horizontal Ducts Figure 701.6.2 Combustion Air from Outdoors through Single Combustion Air Opening |
| 145 | 701.10 Louvers, Grilles, and Screens. 701.11 Combustion Air Ducts. 701.12 Dampers Prohibited. 702.0 Process Air. 702.1 General. 703.0 Extra Device or Attachment. 703.1 General. 704.0 Bleed Lines for Diaphragm-Type Valves. 704.1 General. |
| 146 | Chapter 8 โ Chimney and Vents |
| 148 | 801.0 General. 801.1 Applicability. 801.2 Venting of Gas Appliances. 801.3 Appliances Fueled by other Fuels. 802.0 Venting of Appliances. 802.1 Minimum Safe Performance. 802.1.1 Installation. 802.1.2 Prohibited Discharge. 802.2 Connection to Venting Systems. 802.2.1 Appliances Not Required to be Vented. 802.2.2 Ventilating Hoods. 802.2.3 Well-Ventilated Spaces. 802.2.4 Direct-Vent Appliances. 802.2.5 Appliances with Integral Vents. 802.3 Design and Construction. 802.3.1 Appliance Draft Requirements. 802.3.2 Appliance Venting Requirements. TABLES FIGURES |
| 149 | 802.3.3 Mechanical Draft Systems. 802.3.3.1 Venting. 802.3.3.2 Leakage. 802.3.3.3 Vent Connectors. 802.3.3.4 Operation. 802.3.3.5 Exit Terminals. 802.3.4 Ventilating Hoods and Exhaust Systems. 802.3.4.1 Automatically Operated Appliance. 802.3.5 Circulating Air Ducts and Furnace Plenums. 802.4 Type of Venting System to be Used. 802.4.1 Plastic Piping. 802.4.2 Plastic Vent Joints. 802.4.3 Special Gas Vent. 802.5 Masonry, Metal, and Factory-Built Chimneys. 802.5.1 Factory-Built Chimneys. 802.5.2 Metal Chimneys. Table 802.4 Type of Venting System to Be Used |
| 150 | 802.5.3 Masonry Chimneys. 802.5.4 Termination. 802.5.4.1 Medium-Heat Gas Appliances. 802.5.4.2 Chimney Height. 802.5.4.3 Decorative Shrouds. 802.5.5 Size of Chimneys. Figure 802.5.4 Typical Termination Locations for Chimneys and Single-Wall Metal Pipes Serving Residential-Type and Low-Heat Appliance |
| 151 | 802.5.6 Inspection of Chimneys or Vents. 802.5.7 Inspection of Chimneys. 802.5.8 Chimney Serving Appliances Burning Other Fuels. 802.5.8.1 Multiple Appliances. 802.5.8.2 Manual Reset Device. 802.5.8.3 Combination Gas- and Oil-Burning Appliances. 802.5.9 Support of Chimneys. 802.5.10 Cleanouts. 802.5.11 Space Surrounding Lining or Vent. 802.5.11.1 Combustion Air. 802.6 Gas Vents. 802.6.1 Installation. 802.6.2 Additional Termination Requirements. |
| 152 | 802.6.2.1 Type B and L Vents. 802.6.2.2 Type B-W Vents. 802.6.2.3 Exterior Wall Termination. 802.6.2.4 Decorative Shrouds. 802.6.2.5 Forced Air Inlet. 802.6.3 Size of Gas Vents. 802.6.3.1 Category I Appliances. 802.6.3.2 Category II, Category III, and Category IV Appliances. 802.6.3.3 Sizing. Table 802.6.2 Roof Pitch Height Figure 802.6.2 Gas Vent Termination Locations for Listed Caps 12 Inches (305 mm) or Less in Size Not Less than 8 Feet (2438 mm) from a Vertical Wall |
| 153 | 802.6.4 Gas Vents Serving Appliances on More than One Floor. 802.6.5 Habitable Space. 802.6.6 Multistory Venting System. 802.6.7 Support of Gas Vents. 802.6.8 Marking. 802.6.9 Fasteners. 802.7 Single-Wall Metal Pipe. 802.7.1 Cold Climate. 802.7.2 Termination. Figure 802.6.5 Plan View of Pratical Separation Method for Multistory Gas Venting Figure 802.6.6 Use of Manifolded Common Vent Connector |
| 154 | 802.7.3 Installation with Appliances Permitted by Table 802.4. 802.7.3.1 Limitations. 802.7.3.2 Attic or Concealed Space. 802.7.3.3 Incinerator. 802.7.3.4 Clearances. 802.7.3.5 Roof Thimble. 802.7.4 Size of Single-Wall Metal Pipe. 802.7.4.1 Sizing of Venting System. 802.7.4.2 Non-Round Metal Pipe. 802.7.4.3 Venting Capacity. Table 802.7.3.4(1) Clearance for Connectors |
| 155 | Table 802.7.3.4(2) Reduction of Clearances with Specified Forms of Protection |
| 156 | 802.7.5 Support of Single-Wall Metal Pipe. 802.7.6 Marking. 802.8 Through-the-Wall Vent Termination. 802.8.1 Termination. 802.8.2 Mechanical Draft Venting System. 802.8.3 Direct-Vent Appliance. 802.8.4 Nuisance and Hazard. 802.8.5 Annular Spaces. 802.8.6 Vent Terminals. 802.9 Condensation Drain. 802.9.1 Local Experience. 802.10 Vent Connectors for Category I Appliances. 802.10.1 Materials. 802.10.1.1 General. 802.10.1.2 Unconditioned Area. 802.10.1.3 Residential Type Appliances. |
| 157 | 802.10.1.4 Non-Residential Low-Heat Appliances. 802.10.1.5 Medium-Heat Appliances. 802.10.2 Size of Vent Connector. 802.10.2.1 Manifold. 802.10.2.2 Size. 802.10.2.3 Height. Table 802.10.1.4 Minimum Thickness for Galvanized Steel Vent Connectors for Low-Heat Appliances Table 802.10.1.5 Minimum Thickness for Steel Vent Connectors for Medium-Heat Appliances and Commercial and Industrial Incinerators |
| 158 | 802.10.2.4 Size Increase. 802.10.3 Two or More Appliances Connected to a Single Vent. 802.10.3.1 Height of Connector. 802.10.3.2 Pressure. 802.10.4 Clearance. 802.10.5 Joints. 802.10.6 Slope. 802.10.7 Length of Vent Connector. 802.10.7.1 Single Wall Connector. 802.10.7.2 Type B Double Wall Connector. 802.10.8 Support. 802.10.9 Chimney Connection. 802.10.10 Inspection. 802.10.11 Fireplaces. 802.10.12 Passage through Ceilings, Floors, or Walls. 802.10.12.1 Combustible Exterior Wall. |
| 159 | 802.10.12.2 Medium-Heat Appliances. 802.11 Vent Connectors for Category II, Category III, and Category IV Appliances. 802.12 Draft Hoods and Draft Controls. 802.12.1 Installation. 802.12.2 Draft Control Devices. 802.12.3 Additional Devices. 802.12.4 Location. 802.12.5 Positioning. 802.12.6 Clearance. 802.13 Manually Operated Dampers. 802.14 Automatically Operated Vent Dampers. 802.15 Obstructions. |
| 160 | 802.16 Protection of Gas Appliances from Fumes or Gases other than Products of Combustion. 803.0 Sizing of Category I Venting Systems. 803.1 Additional Requirements for Single Appliance Vent. 803.1.1 Installation. 803.1.2 Vent Downsizing. 803.1.3 Elbows. 803.1.4 Zero Lateral. 803.1.5 High-Altitude Installations. 803.1.6 Multiple Input Ratings. 803.1.7 Corrugated Chimney Liner Reduction. 803.1.8 Connection to Chimney Liners. 803.1.9 Vertical Vent Upsizing Using 7 x Rule. 803.1.10 Draft Hood Conversion Accessories. |
| 161 | 803.1.11 Chimney and Vent Locations. 803.1.12 Residential and Low-Heat Appliances. 803.1.12.1 Clay Flue Lining. 803.1.12.2 Chimney Lining. 803.1.13 Corrugated Vent Connector Size. 803.1.14 Upsizing. 803.1.15 Single Run of Vent. 803.1.16 Interpolation. 803.1.17 Extrapolation. 803.1.18 Engineering Methods. 803.1.19 Height Entries. 803.2 Additional Requirements for Multiple Appliance Vent Table 803.1.3(7) through Table 803.1.3(15). 803.2.1 Vent Connector Maximum Length. |
| 162 | 803.2.2 Vent Connector Exceeding Maximum Length. 803.2.3 Ten Percent Reduction. 803.2.4 Vent Offset. 803.2.5 Elbow Reduction. 803.2.6 Common Vent Minimum Size. 803.2.7 Tee and Wye Fittings. 803.2.8 Size of Fittings. 803.2.9 High-Altitude Installations. 803.2.10 Connector Rise. 803.2.11 Vent Height. 803.2.12 Multistory Installations. Table 803.2.1 Vent Connector Maximum Length |
| 163 | 803.2.13 Size of Vents for Multistory Installation. 803.2.14 Vent Type Multistory Installation. 803.2.15 Offsets in Multistory Installations. 803.2.16 Flow Area of Vent. 803.2.17 Multiple Input Ratings. Figure 803.2.12 Multistory Gas Vent Design Procedure for Each Segment of System Figure 803.2.13 Principles of Design of Multistory Vents Using Vent Connector and Common Vent Design Tables |
| 164 | 803.2.18 Corrugated Metallic Chimney Liner Reduction. 803.2.19 Chimneys and Vents. 803.2.20 Vent Connector Size Limitations. 803.2.21 Combination of Pipe Types and Sizes. 803.2.22 Multiple Connector and Vent Sizes. 803.2.23 Interpolation. |
| 165 | 803.2.24 Extrapolation. 803.2.25 Engineering Methods. 803.2.26 Height Entries. |
| 166 | Table 803.1.3(1) Type B Double-Wall Gas Vent |
| 169 | Table 803.1.3(2) Type B Double-Wall Gas Vent |
| 171 | Table 803.1.3(3) Masonry Chimney |
| 173 | Table 803.1.3(4) Masonry Chimney |
| 175 | Table 803.1.3(5) Single-Wall Metal Pipe or Type B Asbestos-Cement Vent |
| 176 | Table 803.1.3(6) Exterior Masonry Chimney |
| 177 | Table 803.1.3(7) Type B Double-Wall Vent |
| 181 | Table 803.1.3(8) Type B Double-Wall Vent |
| 183 | Table 803.1.3(9) Masonry Chimney |
| 185 | Table 803.1.3(10) Masonry Chimney |
| 187 | Table 803.1.3(11) Single-Wall Metal Pipe or Type B Asbestos-Cement Vent |
| 188 | Table 803.1.3(12) Exterior Masonry Chimney |
| 189 | Table 803.1.3(13) Exterior Masonry Chimney |
| 190 | Table 803.1.3(14) Exterior Masonry Chimney |
| 191 | Table 803.1.3(15) Exterior Masonry Chimney |
| 192 | Chapter 9 โ Installation of Specific Appliances |
| 194 | 901.0 General. 901.1 Applicability. 902.0 General. 902.1 Nonindustrial Gas Appliance. 902.2 Combustion Air from Bedroom or Bathroom. 902.3 Added or Converted Appliances. 902.4 Type of Gas(es). 902.5 Building Structural Members. 902.5.1 Structural Capacity. 902.6 Flammable Vapors. 902.7 Combination of Appliances. 903.0 Air-Conditioning Appliances (Gas-Fired Air Conditioners and Heat Pumps). 903.1 Independent Gas Piping. 903.2 Connection of Gas Engine-Powered Air Conditioners. 903.3 Clearances for Indoor Installation. TABLES FIGURES |
| 195 | 903.4 Assembly and Installation. 903.5 Furnace Plenums and Air Ducts. 903.6 Refrigeration Coils. 903.7 Switches in Electrical Supply Line. 904.0 Central Heating Boilers and Furnaces. 904.1 Location. 904.1.1 Self-Closing Doors. 904.1.2 Gasketing. 904.2 Clearance. |
| 196 | 904.3 Assembly and Installation. 904.3.1 Under-floor Installation. 904.3.1.1 Supported by Ground. 904.3.1.2 Supported from Above. 904.3.1.3 Excavation. Table 904.2 Clearances to Combustible Material for Unlisted Furnaces, Boilers, And Air Conditioners Figure 904.2(1) Extent of Protection Necessary to Reduce Clearances from Gas Appliances or Vent Connectors |
| 197 | 904.4 Temperature- or Pressure-Limiting Devices. 904.5 Low-Water Cutoff. 904.6 Steam Safety and Pressure-Relief Valves. 904.6.1 Discharge. 904.6.2 Size. 904.6.3 End Connections. 904.7 Furnace Plenums and Air Ducts. 904.8 Refrigeration Coils. Figure 904.2(2) Wall Protector Clearance Reduction System Figure 904.2(3) Masonry Clearance Reduction System |
| 198 | 904.9 Cooling Units used with Heating Boilers. 904.10 Appliances in Attics and Under-Floor Spaces. 904.10.1 Length of Passageway. 904.10.2 Width of Passageway. 904.10.3 Work Platform. 904.10.4 Lighting and Convenience Outlet. 904.10.5 Furnace (Upright and Horizontal). 905.0 Clothes Dryers. 905.1 Clearance. 905.2 Exhausting to the Outdoors. 905.3 Provisions for Makeup Air. 905.4 Exhaust Ducts for Type 1 Clothes Dryers. 905.5 Exhaust Ducts for Type 2 Clothes Dryers. |
| 199 | 905.6 Multiple-Family or Public Use. 906.0 Conversion Burners. 906.1 General. 907.0 Decorative Appliances for Installation in Vented Fireplaces. 907.1 Prohibited Installations. 907.2 Installation. 907.3 Fireplace Screens. 908.0 Gas Fireplaces, Vented. 908.1 Prohibited Installations. 908.2 Installation. Table 907.2 Free Opening Area of Chimney Damper for Venting Flue Gases from Unlisted Decorative Appliances for Installation in Vented Fireplaces |
| 200 | 908.3 Combustion and Circulating Air. 909.0 Non-Recirculating Direct Gas-Fired Industrial Air Heaters. 909.1 Application. 909.2 Prohibited Installations. 909.3 Installation. 909.4 Clearance from Combustible Materials. 909.5 Air Supply. 909.6 Atmospheric Vents, Gas Reliefs, or Bleeds. 909.7 Relief Openings. 909.8 Purging. 910.0 Recirculating Direct Gas-Fired Industrial Air Heaters. 910.1 Application. 910.2 Prohibited Installations. 910.3 Installation. |
| 201 | 910.4 Clearance from Combustible Materials. 910.5 Air Supply. 910.6 Atmospheric Vents, Gas Reliefs or Bleeds. 910.7 Relief Openings. 910.8 Purging. 911.0 Duct Furnaces. 911.1 Clearances. 911.2 Installation of Duct Furnaces. 911.3 Access Panels. 911.4 Location of Draft Hoods and Controls. 911.5 Circulating Air. 911.6 Duct Furnaces Used with Refrigeration Systems. |
| 202 | 911.7 Installation in Commercial Garages and Aircraft Hangars. 911.8 Installation in Commercial Garages. 911.8.1 Repair Garages. 911.9 Installation in Aircraft Hangars. 912.0 Floor Furnaces. 912.1 Installation. 912.2 Temperature Limit Controls. 912.3 Combustion and Circulating Air. 912.4 Placement. 912.5 Bracing. 912.6 Support. 912.7 Clearance. 912.8 Access. 912.9 Seepage Pan. |
| 203 | 912.10 Wind Protection. 912.11 Upper-Floor Installations. 912.12 First Floor Installation. 913.0 Food Service Appliance, Floor Mounted. 913.1 Clearance for Listed Appliances. 913.2 Clearance for Unlisted Appliances. 913.3 Mounting on Combustible Floor. 913.4 Installation on Noncombustible Floor. |
| 204 | 913.5 Combustible Material Adjacent to Cooking Top. 913.6 Use with Casters. 913.7 Level Installation. 913.8 Ventilation. 914.0 Food Service Appliances, Counter Appliances. 914.1 Vertical Clearance. 914.2 Clearance for Listed Appliances. 914.3 Clearance for Unlisted Appliances. 914.4 Mounting of Unlisted Appliances. 915.0 Hot Plates and Laundry Stoves. 915.1 General. 916.0 Household Cooking Appliances. 916.1 Floor-Mounted Units. 916.1.1 Clearance from Combustible Material. |
| 205 | 916.1.2 Vertical Clearance Above Cooking Top. 916.2 Built-In Units. 916.2.1 Installation. 916.2.2 Vertical Clearance. 916.2.3 Horizontal Clearance. 916.2.4 Level Installation. 917.0 Illuminating Appliances. 917.1 Clearances for Listed Appliances. 917.2 Clearances for Unlisted Appliances. 917.2.1 Open-Flame Type. Table 917.2 Clearances for Unlisted Outdoor Open-Flame Illuminating Appliances |
| 206 | 917.3 Mounting on Buildings. 917.4 Mounting on Posts. 917.5 Gas Appliance Pressure Regulators. 918.0 Incinerators, Commercial-Industrial. 918.1 General. 919.0 Infrared Heaters. 919.1 Support. 919.2 Suspended Low-Intensity Infrared Tube Heaters. 919.3 Clearance. 919.4 Combustion and Ventilation Air. 919.5 Installation in Commercial Garages and Aircraft Hangars. 920.0 Open-Top Broiler Units. 920.1 Listed Units. 920.2 Unlisted Units. 920.3 Protection Above Domestic Units. 920.4 Commercial Units. 921.0 Outdoor Cooking Appliances. 921.1 Listed Units. |
| 207 | 921.2 Unlisted Units. 922.0 Pool Heaters. 922.1 Location. 922.2 Clearance. 922.3 Temperature or Pressure-Limiting Devices. 922.4 Bypass Valves. 922.5 Venting. 923.0 Refrigerators. 923.1 Clearance. 923.2 Venting or Ventilating Kits Approved for Use with a Refrigerator. 924.0 Room Heaters. 924.1 Prohibited Installations. 924.1.1 Unvented Room Heaters. 924.2 Installations in Institutions. 924.3 Clearance. |
| 208 | 924.4 Wall-Type Room Heaters. 925.0 Stationary Gas Engines. 925.1 General. 925.2 Connection to the Gas Supply Piping. 926.0 Gas-Fired Toilets. 926.1 Clearance. 926.2 Installation on Combustible Floors. 926.3 Vents. 927.0 Unit Heaters. 927.1 Support. 927.2 Clearance. 927.2.1 Floor-Mounted-Type Unit Heaters. 927.3 Combustion and Circulating Air. 927.4 Ductwork. 927.5 Installation in Commercial Garages and Aircraft Hangars. 928.0 Wall Furnaces. 928.1 Installation. |
| 209 | 928.2 Location. 928.3 Combustion and Circulating Air. 929.0 Appliances for Installation in Manufactured Housing. 929.1 General. 930.0 Small Ceramic Kilns. 930.1 General. 930.2 Installation. 930.3 Fuel-Gas Controls. 930.4 Electrical Equipment. 930.5 Installations Inside Buildings. 930.5.1 Kiln Clearances. 930.5.2 Hoods. Figure 928.1 Installation of Type B-W Gas Vents for Vented Wall Furnaces |
| 210 | 930.5.3 Gravity Ventilation Ducts. 930.5.4 Makeup Air. 930.5.5 Hood and Duct Clearances. 930.6 Exterior Installations. 931.0 Compressed Natural Gas (CNG) Vehicular Fuel Systems. 931.1 General. 932.0 Outdoor Open Flame Decorative Appliances. 932.1 General. 932.1.1 Listed Units. 932.1.2 Unlisted Units. 932.1.3 Connection to the Piping System. 933.0 Appliances for Installation in Manufactured Housing. 933.1 General. 934.0 Fuel Cell Power Plants. 934.1 General. 935.0 Evaporative Cooling Systems. 935.1 General. 935.2 Location. 935.3 Access, Inspection, and Repair. 935.4 Installation. 935.4.1 Modifications to the Supporting Structure. 935.4.2 On the Ground. 935.4.3 On a Platform. |
| 212 | Chapter 10 โ Steam and Hot Water Boilers |
| 214 | 1001.0 General. 1001.1 Applicability. 1002.0 Standards. 1002.1 General. 1002.2 Oil-Burning Boilers. 1002.2.1 Listing & Labeling. 1002.2.2 Installation. 1002.3 Electric Boilers. 1003.0 Workmanship. 1003.1 General. 1004.0 Detailed Requirements. 1004.1 Safety Requirements. 1004.2 Controls. 1004.3 Gauges. 1004.4 Stack Dampers. 1004.5 Welding. 1005.0 Expansion Tanks. 1005.1 General. 1005.2 Systems with Open Expansion Tanks. TABLES |
| 215 | 1005.3 Closed-Type Systems. 1005.4 Minimum Capacity of Closed-Type Tank. 1006.0 Safety or Relief Valve Discharge. 1006.1 General. 1007.0 Shutoff Valves. 1007.1 General. 1008.0 Gas-Pressure Regulators. 1008.1 General. 1009.0 Low-Water Cutoff. 1009.1 General. Table 1005.4(1) Expansion Tank Capacities for Gravity Hot Water Systems Table 1005.4(2) Expansion Tank Capacities for Forced Hot Water Systems |
| 216 | 1010.0 Combustion Regulators โ Safety Valves. 1010.1 General. 1011.0 Automatic Boilers. 1011.1 General. 1012.0 Clearance for Access. 1012.1 General. 1012.2 Power Boilers. 1012.3 Steam-Heating Boilers, Hot Water Boilers, and Power Boilers. 1012.4 Package Boilers, Steam-Heating Boilers, and Hot-Water-Heating Boilers. 1013.0 Boiler Rooms and Enclosures. 1013.1 General. 1014.0 Mounting. 1014.1 General. 1015.0 Floors. 1015.1 General. 1016.0 Chimneys or Vents. 1016.1 General. 1017.0 Drainage. 1017.1 General. |
| 217 | 1018.0 Boilers, Stokers, and Steam Generators. 1018.1 General. 1019.0 Air for Combustion and Ventilation. 1019.1 General. 1020.0 Operating Adjustments and Instructions. 1020.1 General. 1021.0 Inspections and Tests. 1021.1 General. 1022.0 Operating Permit. 1022.1 General. 1023.0 Maintenance Inspection. 1023.1 General. 1023.2 Power and Miniature Boilers. 1023.3 Steam- and Water-Heating Boilers. 1023.4 Automatic Steam-Heating Boilers. 1023.5 Unfired Pressure Vessels. 1024.0 Operation and Maintenance of Boilers and Pressure Vessels. 1024.1 General. |
| 219 | Table 1011.1 Controls and Limit Devices for Automatic Boilers |
| 222 | Chapter 11 โ Refrigeration |
| 224 | 1101.0 General. 1101.1 Applicability. Part I โ Refrigeration Systems. 1102.0 Refrigeration Systems. 1102.1 General. 1102.2 Refrigerants. 1103.0 Refrigerant Classification. 1103.1 General. 1104.0 Classification of Refrigeration Systems. 1104.1 General. 1104.2 High-Probability System. 1104.3 Low-Probability System. 1105.0 Requirements for Refrigerant and Refrigeration System Use. 1105.1 System Selection. 1105.2 Volume of Occupied Space. 1105.3 Refrigerated Process and Storage Areas. 1105.3.1 Refrigerant Room. 1105.3.2 Sealed. 1105.3.3 Lower Flammability Limit. 1105.4 Refrigerant Purity. TABLES |
| 225 | 1105.4.1 New and Reclaimed Refrigerants. 1105.4.2 Recovered Refrigerants. 1106.0 General Requirements. 1106.1 Human Comfort. 1106.2 Supports and Anchorage. 1106.3 Access. 1106.4 Illumination and Service Receptacles. 1106.5 Protection from Mechanical Damage. 1106.6 Electrical. 1106.7 Ventilation of Rooms Containing Condensing Units. 1106.7.1 Permanent Gravity Ventilation Openings. 1106.7.2 Mechanical Exhaust System. |
| 226 | 1106.8 Prohibited Locations. 1106.9 Condensation Control. 1106.10 Condensate. 1106.11 Defrost. 1106.12 Overflows. 1106.13 Condensate, Defrost, and Overflow Disposal. 1106.14 Refrigerant Port Protection. 1107.0 Refrigeration Machinery Rooms. 1107.1 Where Required. 1107.1.1 Quantity. 1107.1.2 Equipment. 1107.1.3 A1 System. 1107.1.4 A1 Refrigerant. 1107.2 Dimensions. 1107.3 Exits. 1107.4 Refrigerant-Vapor Alarms. 1107.5 Separation. |
| 227 | 1107.6 Combustion Air and Return Air. 1107.7 Special Requirements. 1108.0 Refrigeration Machinery Room Ventilation. 1108.1 General. 1108.2 Refrigeration Machinery Rooms. 1108.3 Distribution of Ventilation. 1108.4 Intermittent Control of the Ventilation Systems. 1108.5 Emergency Control of the Ventilation Systems. 1108.6 Central Control of Ventilation Systems. 1108.7 Ventilation Discharge. 1108.8 Fans. 1108.9 Ventilation Intake. |
| 228 | 1109.0 Refrigeration Machinery Room Equipment and Controls. 1109.1 General. 1109.2 Electrical. 1109.3 Storage. 1109.4 Emergency Control. 1110.0 Refrigeration Piping, Containers, and Valves. 1110.1 General. 1110.2 Nonferrous Materials. 1110.3 Ferrous Materials. 1111.0 Erection of Refrigerant Piping. 1111.1 General. 1111.2 Support. 1111.3 Protection from Damage. 1111.4 Visual Inspection. 1111.5 Prohibited Locations. 1111.6 Underground Piping. 1111.7 Joints. 1111.8 Identification. 1112.0 Refrigerant Control Valves. 1112.1 Location. |
| 229 | 1112.2 Support. 1112.3 Access. 1112.4 Identification. 1113.0 Pressure-Limiting Devices. 1113.1 Where Required. 1113.2 Setting. 1113.3 Connection. 1113.4 Operation. 1114.0 Pressure-Relief Devices. 1114.1 General. 1114.2 Positive-Displacement Compressor. 1114.3 Liquid-Containing Portions of Systems. 1114.4 Evaporators. 1114.5 Actuation. 1114.6 Stop Valves Prohibited. 1114.7 Location. 1114.8 Materials. 1115.0 Pressure-Relief Device Settings. 1115.1 Pressure-Relief Valve Setting. 1115.2 Rupture Member Setting. |
| 230 | 1116.0 Marking of Pressure-Relief Devices. 1116.1 Pressure-Relief Valves. 1116.2 Rupture Members. 1116.3 Fusible Plugs. 1117.0 Overpressure Protection. 1117.1 General. 1117.2 Type of Protection. 1117.3 Three-Way Valve Required. 1117.4 Parallel Pressure-Relief Devices. 1117.5 Discharge Capacity. 1117.6 Rating of Pressure-Relief Valves. Table 1117.5 Value of Factor Dependent |
| 231 | 1117.7 Rating of Rupture Members and Fusible Plugs. 1117.8 Discharge Location. 1118.0 Discharge Piping. 1118.1 General. 1119.0 Special Discharge Requirements. 1119.1 General. 1119.2 Design Requirements. |
| 232 | 1119.3 Testing. 1120.0 Ammonia Discharge. 1120.1 General. 1121.0 Detection and Alarm Systems. 1121.1 General. 1121.2 Power and Supervision. 1121.3 Annunciation. 1121.4 Installation, Maintenance, and Testing. 1122.0 Emergency Pressure Control System. 1122.1 General. 1123.0 Equipment Identification. 1123.1 General. 1123.2 Volume and Type. 1123.3 Permanent Sign. 1124.0 Testing of Refrigeration Equipment. 1124.1 Factory Tests. 1124.2 Field Tests. 1124.3 Test Medium. |
| 233 | 1124.4 Declaration. 1124.5 Brine Systems. 1125.0 Maintenance and Operation. 1125.1 General. 1126.0 Storage of Refrigerants and Refrigerant Oils. 1126.1 General. Part II โ Cooling Towers. 1127.0 General. 1127.1 Applicability. 1128.0 Support and Anchorage. 1128.1 General. 1129.0 Drainage. 1129.1 General. 1130.0 Chemical Treatment Systems. 1130.1 General. 1131.0 Location. 1131.1 General. 1132.0 Electrical. 1132.1 General. 1133.0 Refrigerants and Hazardous Fluids. 1133.1 General. Table 1124.2 Field Leak Test Pressures (psig)* |
| 234 | Table 1102.2 Refrigerant Groups, Properties, and Allowable Quantities |
| 238 | Table 1105.1 Permissible Refrigeration Systems |
| 240 | Chapter 12 โ Hydronics |
| 242 | Part I โ Steam and Water Piping. 1201.0 General. 1201.1 Applicability. 1201.2 High Pressure Systems. 1201.3 Low Pressure Systems. 1201.3.1 Standards. 1201.3.2 Materials and Construction. 1201.3.2.1 Tubing. 1201.3.2.2 Valves. 1201.3.2.3 Fittings. 1201.3.2.4 Copper Tubing. 1201.3.2.5 Mechanically Formed Tee Fittings. 1201.3.2.6 Welding. 1201.3.2.7 AsbestosโCement. 1201.3.2.8 Pipe Joint Compound. 1201.3.2.9 Protective Coatings. 1201.3.2.10 Fluxes. 1201.3.2.11 Insulation. 1201.3.2.12 Flashing Material. 1201.3.2.13 Gaskets. 1201.3.2.14 Hangers and Anchors. 1201.3.2.15 Sleeves. TABLES |
| 243 | 1201.3.2.16 Standards. 1201.3.2.17 Marking. 1201.3.3 Fabrication of Joints. 1201.3.3.1 Screwed Joints. 1201.3.3.2 Solder Joints. Table 1201.3.1 Materials for Hydronic System Piping, Tubing, and Fittings |
| 244 | 1201.3.3.3 Welded Joints. 1201.3.3.4 Flanged Joints. 1201.3.3.5 Mechanical Joints. 1201.3.4 Connections. 1201.3.4.1 Brass and Copper Piping. 1201.3.4.2 Cast-Iron Piping. 1201.3.4.3 Galvanized Wrought-Iron and Galvanized Steel Piping. 1201.3.4.4 Black Wrought-Iron Piping. 1201.3.4.5 Black Steel Piping. 1201.3.4.6 Asbestos-Cement Piping. 1201.3.4.7 Copper Tubing. 1201.3.4.8 Piping to Tubing. 1201.3.5 Changes in Direction. 1201.3.6 Changes in Pipe Sizes. 1201.3.7 Hangers and Supports. 1201.3.7.1 In Ground. 1201.3.8 Installation. 1201.3.8.1 Wall Thickness. 1201.3.8.1(A) Condensate Return Lines. 1201.3.8.2 Piping Embedded in Structure. 1201.3.8.3 Providing for Expansion, Contraction, and Settling. 1201.3.8.4 Circulation. |
| 245 | 1201.3.8.5 Underground Piping. 1201.3.8.5(A) Beneath Buildings. 1201.3.8.5(B) Outside of Buildings. 1201.3.8.5(C) Openings into Buildings. 1201.3.8.6 Aboveground Piping. 1201.3.8.6(A) Insulation. 1201.3.8.6(B) Lining. 1201.3.8.6(C) Clearance. 1201.3.8.6(D) Exposed Piping. 1201.3.8.6(E) Asbestos-Cement Piping. 1201.3.8.6(F) Roof and Wall Openings. 1201.3.8.6(G) Drainage. 1201.3.8.6(H) Freezing. 1201.3.8.7 Trenches and Tunnels. 1201.3.8.7(A) Mechanical Equipment. 1201.3.8.7(B) Tunneling and Driving. 1201.3.8.7(C) Backfilling. 1201.3.9 Pressure Testing. |
| 246 | 1201.3.9.1 Media. 1201.3.9.2 Pressure Test. 1201.3.9.3 Moved Structures. 1201.3.9.4 Test Waived. 1201.3.9.5 Exceptions. 1201.4 PEX Tubing. 1201.4.1 Materials and Construction. 1201.4.1.1 Fittings. 1201.4.1.2 Insulation. 1201.4.1.3 Hangers, Sleeves, and Anchors. 1201.4.1.4 Marking. 1201.4.2 Fabrication of Joints. 1201.4.3 Changes in Direction. 1201.5 PEX-AL-PEX. Table 1201.4 PEX Tubing Pressure/Temperature Table 1201.5 PEX-AL-PEX Piping Pressure/Temperature |
| 247 | 1201.5.1 Materials and Construction. 1201.5.1.1 Fittings. 1201.5.1.2 Insulation. 1201.5.1.3 Hangers, Sleeves, and Anchors. 1201.5.1.4 Markings. 1201.5.2 Fabrication of Joints. 1201.5.3 Changes in Direction. 1201.6 Polypropylene Pipe. 1201.6.1 Materials and Construction. 1201.6.1.1 Fittings. 1201.6.1.2 Hangers, Sleeves and Anchors. 1201.6.1.3 Marking. 1201.6.1.4 Heat-Fusion Joints. 1201.6.1.5 Mechanical and Compression Sleeve Joints. 1201.6.1.6 Transition Fittings. 1201.7 PE-RT Tubing. 1201.7.1 Materials and Construction. 1201.7.1.1 Fittings. 1201.7.1.2 Hangers, Sleeves and Anchors. Table 1201.6 Polypropylene Piping Pressure/Temperature Table 1201.7(1) PE-RT Tubing Pressure/Temperature (ASTM F 2623) Table 1201.7(2) PE-RT Tubing Pressure/Temperature (ASTM F 2769) |
| 248 | 1201.7.1.3 Marking. 1201.7.2 Fabrication of Joints. 1201.7.3 Changes in Direction. 1201.8 PE-AL-PE. 1201.8.1 Materials and Construction. 1201.8.1.1 Fittings. 1201.8.1.2 Hangers, Sleeves, and Anchors. 1201.8.1.3 Marking. 1201.8.1.4 Fabrication of Joints. 1201.8.2 Changes in Direction. Part II โ Hydronic Panel Heating Systems. 1202.0 Scope. 1202.1 General. 1203.0 Installation. 1203.1 Design and Installation. 1203.2 Pressure Testing. 1204.0 Piping Materials. 1204.1 Panel(s). 1204.2 Hot-Water Supply Lines. 1205.0 Piping Joints. 1205.1 General. 1206.0 Heat Sources. 1206.1 General. Table 1201.8 PE-AL-PE Pressure-Temperature |
| 249 | 1207.0 Testing. 1207.1 General. |
| 250 | Chapter 13 โ Fuel Gas Piping |
| 252 | Part I โ Fuel Piping. 1301.0 Scope of Gas Piping. 1301.1 Coverage of Piping System. 1301.2 Piping System Requirements. 1301.3 Applications. 1302.0 General. 1302.1 Installation. 1303.0 Inspection. 1303.1 Inspection Notification. 1303.2 Excavation. 1303.3 Type of Inspections. 1303.3.1 Rough Piping Inspection. 1303.3.2 Final Piping Inspection. TABLES FIGURES |
| 253 | 1303.3.3 Test Gauges. 1303.3.3.1 Pressure Tests (10 psi or less). 1303.3.3.2 Pressure Tests (greater than 10 psi to 100 psi). 1303.3.3.3 Pressure Tests (exceeding 100 psi). 1303.3.3.4 Pressure Range. 1303.4 Inspection Waived. 1304.0 Certificate of Inspection. 1304.1 Issuance. 1304.2 Gas Supplier. 1304.3 Unlawful. 1305.0 Authority to Render Gas Service. 1305.1 Authorized Personnel. 1305.2 Outlets. 1306.0 Authority to Disconnect. 1306.1 Disconnection. 1306.2 Notice. 1306.3 Capped Outlets. 1307.0 Temporary Use of Gas. 1307.1 General. 1308.0 Gas Piping System Design, Materials, and Components. 1308.1 Installation of Piping System. 1308.1.1 Addition to Existing System. 1308.2 Provision for Location of Point of Delivery. 1308.3 Interconnections Between Gas Piping Systems. 1308.3.1 Interconnections Supplying Separate Users. |
| 254 | 1308.3.2 Interconnections for Standby Fuels. 1308.4 Sizing of Gas Piping Systems. 1308.4.1 Maximum Gas Demand. 1308.4.2 Sizing Methods. 1308.4.3 Allowable Pressure Drop. 1308.5 Acceptable Piping Materials and Joining Methods. 1308.5.1 Materials. 1308.5.1.1 Other Materials. 1308.5.2 Metallic Pipe. 1308.5.2.1 Cast-Iron. 1308.5.2.2 Steel and Wrought-Iron. Table 1308.4.1 Approximate Gas Input for Typical Appliances |
| 255 | 1308.5.2.3 Copper and Brass. 1308.5.2.4 Aluminum Alloy. 1308.5.3 Metallic Tubing. 1308.5.3.1 Steel. 1308.5.3.2 Copper and Brass. 1308.5.3.3 Aluminum Alloy. 1308.5.3.4 Corrugated Stainless Steel. 1308.5.4 Plastic Pipe, Tubing, and Fittings. 1308.5.5 Regulator Vent Piping. 1308.5.6 Anodeless Risers. 1308.5.6.1 Factory – Assembled Anodeless Risers. 1308.5.6.2 Service Head Adapters and Field-Assembled Anodeless Risers. 1308.5.6.3 Undiluted Liquefied Petroleum Gas Piping. 1308.5.7 Workmanship and Defects. 1308.5.8 Protective Coating. 1308.5.9 Metallic Pipe Threads. 1308.5.9.1 Damaged Threads. 1308.5.9.2 Number of Threads. Table 1308.5.9.2 Specifications for Threading Metallic Pipe |
| 256 | 1308.5.9.3 Thread Joint Compounds. 1308.5.10 Metallic Piping Joints and Fittings. 1308.5.10.1 Pipe Joints. 1308.5.10.2 Tubing Joints. 1308.5.10.3 Flared Joints. 1308.5.10.4 Metallic Pipe Fittings (Including Valves, Strainers, Filters). 1308.5.11 Plastic Piping, Joints, and Fittings. 1308.5.11.1 Joint Design. 1308.5.11.2 Heat-Fusion Joint. 1308.5.11.3 Compression-Type Mechanical Joints. 1308.5.11.4 Liquefied Petroleum Gas Piping Systems. |
| 257 | 1308.5.12 Flanges. 1308.5.12.1 Flange Facings. 1308.5.12.2 Lapped Flanges. 1308.5.13 Flange Gaskets. 1308.6 Gas Meters. 1308.6.1 Location. 1308.6.1.1 Subject to Damage. 1308.6.1.2 Extreme Temperatures. 1308.6.2 Supports. 1308.6.3 Meter Protection. 1308.6.4 Identification. 1308.7 Gas Pressure Regulators. 1308.7.1 Overpressure Protection. 1308.7.2 Listing. 1308.7.3 Location. 1308.7.4 Regulator Protection. 1308.7.5 Venting. 1308.7.5.1 Line Gas Pressure Regulators. |
| 258 | 1308.7.5.2 Venting of Gas Appliance Pressure Regulators. 1308.7.5.3 Vents. 1308.7.5.4 Discharge of Vents. 1308.7.6 Bypass Piping. 1308.7.7 Identification. 1308.8 Backpressure Protection. 1308.8.1 Protective Devices. 1308.9 Low-Pressure Protection. 1308.10 Shutoff Valves. 1308.11 Expansion and Flexibility. 1308.11.1 Special Local Conditions. 1309.0 Excess Flow Valve. 1309.1 General. 1310.0 Venting of Gas Appliance Pressure Regulators. 1310.1 General. |
| 259 | 1311.0 Gas Piping Installation. 1311.1 Piping Underground. 1311.1.1 Cover Requirements. 1311.1.2 Trenches. 1311.1.2.1 Backfilling. 1311.1.3 Protection Against Corrosion. 1311.1.4 Protection Against Freezing. 1311.1.5 Piping through Foundation Wall. 1311.1.6 Piping Underground Beneath Buildings. 1311.1.6.1 Conduit with One End TerminatingOutdoors. 1311.1.6.2 Conduit with Both Ends Terminating Indoors. 1311.1.7 Plastic Piping. 1311.1.7.1 Connections Between Metallic and Plastic Piping. |
| 260 | 1311.1.7.2 Tracer Wire. 1311.2 Installation of Piping. 1311.2.1 Building Structure. 1311.2.2 Gas Piping to be Sloped. 1311.2.2.1 Ceiling Locations. 1311.2.3 Aluminum Alloy Pipe. 1311.2.4 Prohibited Locations. 1311.2.5 Hangers, Supports, and Anchors. 1311.2.5.1 Spacing. 1311.2.5.2 Expansion and Contraction. 1311.2.6 Removal of Piping. 1311.3 Concealed Piping in Buildings. 1311.3.1 Connections. 1311.3.2 Piping in Partitions. 1311.3.3 Tubing in Partitions. Table 1311.2.5.1 Support of Piping |
| 261 | 1311.3.4 Piping in Floors. 1311.4 Piping in Vertical Chases. 1311.4.1 Pressure Reduction. 1311.4.2 Construction. 1311.4.3 Ventilation. 1311.5 Maximum Design Operating Pressure. 1311.6 Gas Pipe Turns. 1311.6.1 Metallic Pipe. |
| 262 | 1311.6.2 Plastic Pipe. 1311.6.3 Elbows. 1311.7 Drips and Sediment Traps. 1311.7.1 Provide Drips where Necessary. 1311.7.2 Location of Drips. 1311.7.3 Sediment Traps. 1311.8 Outlets. 1311.8.1 Cap Outlets. 1311.8.1.1 Appliance Shutoff Valves. 1311.9 Branch Pipe Connection. 1311.10 Manual Gas Shutoff Valves. 1311.10.1 Valves Controlling Multiple Systems. 1311.10.1.1 Shutoff Valves for Multiple House Lines. 1311.10.2 Emergency Shutoff Valves. 1311.10.3 Shutoff Valve for Laboratories. |
| 263 | 1311.11 Prohibited Devices. 1311.12 Systems Containing Gas-Air Mixtures Outside the Flammable Range. 1311.13 Systems Containing Flammable Gas-Air Mixtures. 1311.13.1 Required Components. 1311.13.2 Optional Components. 1311.13.3 Additional Requirements. 1311.13.4 Special Requirements for Mixing Blowers. 1311.13.5 Installation of Gas-Mixing Machines. 1311.13.6 Use of Automatic Firechecks, Safety Blowouts, or Backfire Preventers. |
| 264 | 1311.14 Electrical Bonding and Grounding. 1311.14.1 Pipe and Tubing other than CSST. 1311.14.2 Bonding of CSST Gas Piping. 1311.14.3 Grounding Conductor of Electrode. 1311.14.4 Lightning Protection System. 1311.15 Electrical Circuits. 1311.16 Electrical Connections. 1311.16.1 Safety Control. 1312.0 Appliance Connections to Building Piping. 1312.1 Connecting Gas Appliances. |
| 265 | 1312.1.1 Commercial Cooking Appliances. 1312.1.2 Restraining Device. 1312.2 Use of Nonmetallic Gas Hose Connectors. 1312.2.1 Indoor. 1312.2.2 Outdoor. 1312.3 Connection of Portable and Mobile Industrial Appliances. 1312.3.1 Flexible Hose. 1312.3.2 Swivel Joints or Couplings. 1312.3.3 Metal Flexible Connectors. 1312.3.4 Flexible Connectors. 1312.4 Appliance Shutoff Valves and Connections. 1312.5 Quick-Disconnect Devices. 1312.6 Gas Convenience Outlets. 1312.7 Sediment Trap. |
| 266 | 1312.8 Installation of Piping. 1313.0 Appliance Overpressure Protection. 1313.1 General. 1314.0 Safety Shutoff Devices for Unlisted LP-Gas Appliance Used Indoors. 1314.1 General. 1315.0 Liquefied Petroleum Gas Facilities and Piping. 1315.1 General. 1316.0 Pressure Testing and Inspection. 1316.1 Piping Installations. 1316.2 Inspection Requirements. 1316.3 Repairs and Additions. 1316.4 New Branches. 1316.5 Piping System. 1316.6 Regulators and Valves. 1316.7 Test Medium. 1316.8 Test Preparation. 1316.8.1 Pipe Joints. 1316.8.2 Expansion Joints. 1316.8.3 Appliances and Equipment. 1316.8.4 Designed for (less than) Operating Pressures. Figure 1312.7 Method of Installing a Tee Fitting Sediment Trap |
| 267 | 1316.8.5 Designed for (equal to or more than) Operating Pressures. 1316.8.6 Safety. 1316.9 Test Pressure. 1316.10 Detection of Leaks and Defects. 1316.10.1 Detecting Leaks. 1316.10.2 Repair or Replace. 1316.11 Piping System Leak Test. 1316.11.1 Turning Gas On. 1316.11.2 Leak Check. 1316.11.3 Placing Appliances and Equipment in Operation. 1316.12 Purging Requirements. 1316.12.1 Piping Systems Required to be Purged Outdoors. 1316.12.1.1 Removal from Service. 1316.12.1.2 Placing in Operation. 1316.12.1.3 Outdoor Discharge of Purged Gases. Table 1316.12.1 Size and Length of Piping |
| 268 | 1316.12.1.4 Combustible Gas Indicator. 1316.12.2 Piping Systems Allowed to be Purged Indoors or Outdoors. 1316.12.2.1 Purging Procedure. 1316.12.2.2 Combustible Gas Detector. 1316.12.3 Purging Appliances and Equipment. 1317.0 Interconnections Between Gas Piping Systems. 1317.1 Interconnections Supplying Separate Users. 1317.2 Interconnections for Standby Fuels. 1318.0 Required Gas Supply. 1318.1 General. 1318.2 Volume. 1318.3 Gas Appliances. 1318.4 Size of Piping Outlets. |
| 269 | 1319.0 Required Gas Piping Size. 1319.1 Pipe Sizing Methods. 1319.1.1 Longest Length Method. 1319.1.2 Branch Length Method. 1319.1.3 Hybrid Pressure. 1319.2 Tables for Sizing Gas Piping Systems. 1319.3 Sizing Equations. 1319.4 Sizing of Piping Sections. Table 1319.3 Cr and Y for Natural Gas and Undiluted Propane at Standard Conditions |
| 270 | 1319.5 Engineering Methods. 1319.6 Variable Gas Pressure. |
| 271 | Figure 1319.1.1 Example Illustrating Use of Tables 1308.4.1 and 1319.2(1) |
| 272 | TABLE 1319.2(1) Schedule 40 Metallic Pipe |
| 273 | Table 1319.2(2) Schedule 40 Metallic Pipe |
| 274 | Table 1319.2(3) Schedule 40 Metallic Pipe |
| 275 | Table 1319.2(4) Schedule 40 Metallic Pipe |
| 276 | Table 1319.2(5) Schedule 40 Metallic Pipe |
| 277 | Table 1319.2(6) Schedule 40 Metallic Pipe |
| 278 | Table 1319.2(7) Semi-Rigid Copper Tubing |
| 279 | Table 1319.2(8) Semi-Rigid Copper Tubing |
| 280 | Table 1319.2(9) Semi-Rigid Copper Tubing |
| 281 | Table 1319.2(10) Semi-Rigid Copper Tubing |
| 282 | Table 1319.2(11) Semi-Rigid Copper Tubing |
| 283 | Table 1319.2(12) Semi-Rigid Copper Tubing |
| 284 | Table 1319.2(13) Semi-Rigid Copper Tubing |
| 285 | Table 1319.2(14) Corrugated Stainless Steel Tubing (CSST) |
| 286 | Table 1319.2(15) Corrugated Stainless Steel Tubing (CSST) |
| 287 | Table 1319.2(16) Corrugated Stainless Steel Tubing (CSST) |
| 288 | Table 1319.2(17) Corrugated Stainless Steel Tubing (CSST) |
| 289 | Table 1319.2(18) Corrugated Stainless Steel Tubing (CSST) |
| 290 | Table 1319.2(19) Polyethylene Plastic Pipe |
| 291 | Table 1319.2(20) Polyethylene Plastic Pipe |
| 292 | Table 1319.2(21) Polyethylene Plastic Pipe |
| 293 | Table 1319.2(22) Polyethylene Plastic Tubing Table 1319.2(23) Polyethylene Plastic Tubing |
| 294 | Table 1319.2(24) Schedule 40 Metallic Pipe |
| 295 | Table 1319.2(25) Schedule 40 Metallic Pipe |
| 296 | Table 1319.2(26) Schedule 40 Metallic Pipe |
| 297 | Table 1319.2(27) Schedule 40 Metallic Pipe |
| 298 | Table 1319.2(28) Semi-Rigid Copper Tubing |
| 299 | Table 1319.2(29) Semi-Rigid Copper Tubing |
| 300 | Table 1319.2(30) Semi-Rigid Copper Tubing |
| 301 | Table 1319.2(31) Corrugated Stainless Steel Tubing (CSST) |
| 302 | Table 1319.2(32) Corrugated Stainless Steel Tubing (CSST) |
| 303 | Table 1319.2(33) Corrugated Stainless Steel Tubing (CSST) |
| 304 | Table 1319.2(34) Polyethylene Plastic Pipe |
| 305 | Table 1319.2(35) Polyethylene Plastic Pipe |
| 306 | Table 1319.2(36) Polyethylene Plastic Tubing |
| 307 | Part II โ Fuel Supply: Manufactured/Mobile Home Parks and Recreational Vehicle Parks. 1320.0 Fuel Gas Piping Systems. 1320.1 General. 1320.2 Recreational Vehicle Park Fuel-Gas Equipment and Installations. 1321.0 Gas Supply Connections. 1321.1 General. 1321.2 Location of Gas Supply Connection. 1322.0 Single and Multiple Manufactured Home Site Fuel Supply Systems. 1322.1 Gas Supply Connections – Underground Gas Piping. 1322.1.1 Underground Installation. 1322.1.1.1 Open-Ended Gastight Conduit. 1322.1.1.2 Requirements. 1323.0 Manufactured Home Site Gas Shutoff Valve. 1323.1 General. 1324.0 Gas Meters. 1324.1 Support of Meters. 1324.2 Location of Meters. 1324.3 Meter Shutoff Valve or Cock. 1325.0 Multiple Manufactured Home Site Fuel Distribution and Supply Systems. 1326.0 Cathodic Protection Requirements. 1326.1 General. |
| 308 | 1327.0 Manufactured Home Community LPG Supply Systems. 1327.1 General. 1328.0 Required Gas Supply. 1328.1 General. 1329.0 Gas Pipe Sizing and Pressure. 1329.1 Size. 1329.2 Pressure. 1330.0 Gas Piping Materials. 1330.1 Metal. 1330.2 Protection Coatings for Metal Gas Piping. 1330.3 Plastic. 1331.0 Gas Piping Installations. 1331.1 Minimum Burial Below Ground Level and Clearances. 1331.2 Metallic Gas Piping. 1331.2.1 Cathodic Protection. Table 1328.1 Demand Factors for Use in Calculating Gas Piping Systems in M/H Communities |
| 309 | 1331.2.2 Underground Metallic Systems. 1331.3 Plastic Gas Piping. 1331.4 Gas Piping System Shutoff Valve. 1332.0 Liquefied Petroleum Gas Appliances. 1332.1 General. 1333.0 Oil Supply. 1333.1 General. 1333.2 Minimum Oil Supply Tank Size. 1333.3 Oil Supply Connections. 1334.0 Fuel Supply Systems Installation. 1334.1 Flexible Gas Connector. 1334.2 Use of Approved Pipe and Fittings of Extension. |
| 310 | 1334.3 Mechanical Protection. 1334.4 Special Rules on Atmospherically Controlled Regulators. 1334.5 Fuel Gas Piping Test. 1334.5.1 Procedures. 1334.5.2 Warning. 1334.5.3 Vents. 1334.6 Oil Tanks. 1334.6.1 Installation. 1334.6.2 Capacity. 1334.6.3 Location. 1334.6.4 Vent. 1334.6.5 Liquid Level. 1334.6.6 Fill Opening. 1334.6.7 Flood Hazard Areas. 1335.0 Manufactured Home Accessory Building Fuel Supply Systems. 1335.1 General. 1336.0 Community Building Fuel Supply Systems in Manufactured Home Communities. 1336.1 Fuel Gas Piping and Appliance Installations. 1336.2 Oil Supply Systems in M/H Communities. |
| 311 | 1336.3 Oil-Burning Equipment and Installation. |
| 312 | Chapter 14 โ Process Piping |
| 314 | 1401.0 General. 1401.1 Applicability. 1402.0 Permit. 1402.1 General. 1403.0 Plans Required. 1403.1 General. 1404.0 Workmanship. 1404.1 General. 1405.0 Inspections. 1405.1 General. 1405.2 Required Inspections. 1405.2.1 Rough Piping Inspection. 1405.2.2 Final Piping Inspection. 1405.3 Other Inspections. 1406.0 Piping and Tubing. 1406.1 General. 1406.2 Hazardous Process Piping (HPP). 1406.2.1 Installation in Exit Corridors and Above other Occupancies. |
| 315 | 1406.2.1.1 Automatic Sprinklers. 1406.2.1.2 Ventilation. 1406.2.1.3 Receptor. 1406.2.1.4 Separation. 1406.2.1.5 Emergency Shutoff Valves. 1406.2.1.6 Electrical Wiring. 1406.3 Special Requirements for HPP Gases. 1406.3.1 Special Provisions. 1406.3.2 Piping and Tubing Installation. 1406.3.3 Gas-Detection System. |
| 316 | Chapter 15 โ Solar Systems |
| 318 | 1501.0 General. 1501.1 Applicability. 1502.0 General. |
| 320 | Chapter 16 โ Stationary Power Plants |
| 322 | 1601.0 Stationary Fuel Cell Power Plants. 1601.1 General. 1602.0 Stationary Engine Generators. 1602.1 General. |
| 324 | Chapter 17 โ Referenced Standards |
| 326 | 1701.0 General. 1701.1 Applicability. 1701.2 Standards. TABLE |
| 327 | Table 1701.0 Referenced Standards |
| 340 | Abbreviations in Table 1701.0 |
| 342 | Appendices Table of Contents |
| 344 | Appendix A โ Residential Plan Examiner Review Form for HVAC System Design |
| 346 | Residential Plans Examiner Review Form for HVAC System Design (Loads, Equipment, Ducts) |
| 348 | Appendix B โ Procedures to be Followed to Place Gas Equipment in Operation |
| 350 | B 1.0 Adjusting the Burner Input. B 1.1 Adjusting Input. B 1.2 High Altitude. B 2.0 Primary Air Adjustment. B 2.1 General. B 3.0 Safety Shutoff Devices. B 3.1 General. B 4.0 Automatic Ignition. B 4.1 General. B 5.0 Protective Devices. B 5.1 General. B 6.0 Checking the Draft. B 6.1 General. B 7.0 Operating Instructions. B 7.1 General. |
| 352 | Appendix C โ Installation and Testing of Oil (Liquid) Fuel-Fired Equipment |
| 354 | C 1.0 General. C 1.1 Applicability. C 2.0 Definitions. |
| 355 | C 3.0 Standards and Accepted Practices. C 3.1 General. C 4.0 Approval of Equipment. C 4.1 General. C 5.0 Placing Equipment in Operation. C 5.1 General. C 6.0 Pilot Operation. C 6.1 General. C 7.0 Burner Operation. C 7.1 General. C 8.0 Method of Test. C 8.1 General Test Methods. |
| 357 | C 9.0 Special Requirements Based on Btu/h Input. C 9.1 General. |
| 360 | Appendix D โ Unit Conversion Tables |
| 362 | TABLES Table D 1.0 Sl Symbols and Prefixes |
| 363 | Table D 2.0 Conversion Factors |
| 366 | Table D 3.0 Approximate Minimum Thickness for Carbon Sheet Steel Corresponding to Manufacturer’s Standard Gauge and Galvanized Sheet Gauge Numbers |
| 368 | Appendix E โ Sustainable Practices |
| 370 | E 101.0 General. E 101.1 Applicability. E 101.2 Definition of Terms. E 201.0 Definitions. E 201.1 Cycles of Concentration for Cooling Towers. E 201.2 Energy Star. E 201.3 Geothermal. E 201.4 Heating Seasonal Performance Factor (HSPF). E 201.5 Integrated Energy Efficiency Ratio (IEER). E 201.6 Integrated Part-Load Value (IPLV). E 201.7 Maintenance. E 201.8 Minimum Efficiency Reporting Value (MERV). E 201.9 Multi-Occupant Spaces. E 201.10 Recirculation System. E 201.11 Seasonal Energy Efficiency Ratio (SEER). E 301.0 General Regulations. E 301.1 Installation. E 301.2 Qualifications. E 302.0 Disposal of Liquid Waste. E 302.1 Disposal. E 302.2 Connections to Plumbing System Required. E 303.0 Abandonment. E 303.1 General. E 401.0 Water Conservation and Efficiency. E 401.1 General. TABLES |
| 371 | E 402.0 Meters. E 402.1 Required. E 402.2 Consumption Data. E 402.3 Access. E 403.0 HVAC Water Use. E 403.1 Once-Through Cooling. E 403.2 Cooling Towers and Evaporative Coolers. E 403.3 Cooling Tower Makeup Water. E 403.4 Use of Reclaimed (Recycled) and On-Site Treated Nonpotable Water for Cooling. E 403.4.1 Drift Eliminator. E 403.4.2 Disinfection. E 501.0 Heating, Ventilation and Air-Conditioning Systems and Equipment – Energy Efficiency. E 501.1 Scope. E 502.0 Heating, Ventilation, and Air-Conditioning Low-Rise Residential Buildings. E 502.1 General. E 502.2 Heating, Ventilating, and Air-Conditioning Systems and Equipment. E 502.2.1 Non-Residential Type Systems and Equipment. E 502.3 Balancing. E 502.3.1 Balancing Dampers. E 502.4 Ducts. E 502.4.1 Insulation for Ducts. |
| 372 | E 502.4.2 Ducts and Register Penetrations. E 502.4.3 Duct Leakage Test. E 502.4.3.1 Duct Leakage Verification Test. E 502.4.4 Duct Sizing. E 502.5 Insulation for Piping. E 502.6 Ventilation and Combustion Air. E 502.6.1 Combustion Air. E 502.7 Electric Heating Systems. E 502.7.1 Wall, Floor, or Ceiling Electric-Resistance Heating. E 502.7.2 Electric Central Warm Air Heating. E 502.8 Bath Ceiling Units. E 502.9 HVAC Equipment, Rated Combinations. E 502.10 Controls. E 502.10.1 Initial Control Setting. E 502.10.2 Ventilation Control. |
| 373 | E 502.10.3 Humidity Control. E 502.10.3.1 Cooling. Table E 502.5 Minimum Pipe Insulation Thickness Table E 502.6 Ventilation Air |
| 374 | E 502.10.4 Freeze Protection Systems. E 502.10.5 Other Controls. E 502.11 Whole House Fans. E 502.12 Dampers. E 503.0 Heating, Ventilation, and Air-Conditioning โ other than Low-Rise Residential Buildings. E 503.1 General. E 503.1.1 New Buildings. E 503.1.2 Additions to Existing Buildings. E 503.1.3 Alterations to Heating, Ventilating, and Air-Conditioning in Existing Buildings. E 503.1.3.1 New Cooling Systems. E 503.1.3.2 Existing Cooling Systems. E 503.1.3.3 Ductwork. E 503.1.3.4 Piping. Table E 502.9 Minimum Requirements for Non-Federally Covered HVAC Equipment |
| 375 | E 503.2 Compliance Path(s). E 503.3 Simplified Approach Option for HVAC Systems. E 503.3.1 Criteria. |
| 376 | E 503.3.2 Climate Zone Determination. E 503.4 Mandatory Provisions. Table E 503.3.1 Eliminate Required Economizer by Increasing Cooling Efficiency |
| 377 | E 503.4.1 Minimum Equipment Efficiencies-Listed Equipment-Nonstandard Conditions. E 503.4.1.1 Equipment not Listed. E 503.4.1.2 Verification of Equipment Efficiencies. |
| 378 | E 503.4.1.3 Labeling. E 503.4.1.3(A) Packaged Terminal Air Conditioners. E 503.4.2 Load Calculations. E 503.4.3 Controls. E 503.4.3.1 Dead Band. E 503.4.3.2 Setpoint Overlap Restriction. E 503.4.3.3 Off-Hour Controls. E 503.4.3.3(A) Automatic Shutdown. E 503.4.3.3(B) Setback Controls. |
| 379 | E 503.4.3.3(C) Optimum Start Controls. E 503.4.3.3(D) Zone Isolation. E 503.4.3.4 Ventilation System Controls. E 503.4.3.4(A) Gravity Hoods, Vents, and Ventilators. E 503.4.3.4(B) Shutoff Damper Controls. E 503.4.3.4(C) Dampers. Table E 503.4.3.4(C) Maximum Damper Leakage |
| 380 | E 503.4.3.4(D) Ventilation Fan Controls. E 503.4.3.5 Heat Pump Auxiliary Heat Control. E 503.4.3.6 Humidifier Preheat. E 503.4.3.7 Humidification and Dehumidification. E 503.4.3.8 Freeze Protection and Snow or Ice Melting Systems. E 503.4.3.9 Ventilation Controls for High-Occupancy Areas. E 503.4.3.10 Single Zone Variable-Air-Volume Controls. |
| 381 | E 503.4.3.11 Outdoor Heating. E 503.4.4 HVAC System Construction and Insulation. E 503.4.4.1 Insulation. E 503.4.4.1 (A) Duct and Plenum Insulation. E 503.4.4.1 (B) Piping Insulation. E 503.4.4.2 Ducts and Plenum Leakage. E 503.4.4.2 (A) Duct Leakage Tests. |
| 382 | E 503.4.5 Completion Requirements. E 503.5 Prescriptive Path. E 503.5.1 Air Economizers. E 503.5.1.1 Control Signal. E 503.5.1.2 High-Limit Shutoff. E 503.5.1.3 Dampers. Table E 503.4.4.2(1) Minimum Duct Seal Level Table E 503.4.4.2(2) Duct Seal Levels Table E 503.5 Minimum System Size for Which an Economizer is Required |
| 383 | E 503.5.1.4 Relief of Excess Outdoor Air. E 503.5.2 Water Economizers. E 503.5.2.1 Maximum Pressure Drop. E 503.5.3 Integrated Economizer Control. Table E 503.5.1.2(1) High-Limit Shutoff Control Options for Air Economizers Table E 503.5.1.2(2) High-Limit Shutoff Control Settings for Air Economizers |
| 384 | E 503.5.4 Economizer Heating System Impact. E 503.5.5 Simultaneous Heating and Cooling Limitation. E 503.5.5.1 Hydronic System Controls. E 503.5.5.1(A) Three-Pipe System. E 503.5.5.1(B) Two-Pipe Changeover System. |
| 385 | E 503.5.5.1(C) Hydronic (Water Loop) Heat Pump Systems. E 503.5.5.2 Dehumidification. E 503.5.5.3 Humidification. E 503.5.6 Air System Design and Control. E 503.5.6.1 Fan System Power Limitation. E 503.5.6.1(A) Motor Nameplate Horsepower. |
| 386 | E 503.5.6.2 VAV Fan Control (Including Systems Using Series Fan Power Boxes). E 503.5.6.2(A) Static Pressure Sensor Location. Table E 503.5.6.1(1) Fan Power Limitation Table E 503.5.6.1(2) Fan Power Limitation Pressure Drop Adjustment |
| 387 | E 503.5.6.2(B) Setpoint Reset. E 503.5.7 Hydronic System Design and Control. E 503.5.7.1 Hydronic Variable Flow Systems. E 503.5.7.2 Pump Isolation. E 503.5.7.3 Chilled- and Hot-Water Temperature Reset Controls. E 503.5.7.4 Hydronic (Water Loop) Heat Pump Systems. E 503.5.8 Heat Rejection Equipment. E 503.5.8.1 Fan Speed Control. E 503.5.9 Limitation on Centrifugal Fan Open-Circuit Cooling Towers. |
| 388 | E 503.5.10 Exhaust Air Energy Recovery. E 503.5.11 Exhaust Hoods. E 503.5.11.1 Fume Hoods. E 503.5.12 Radiant Heating Systems. E 503.5.12.1 Heating Enclosed Spaces. E 503.5.13 Hot Gas Bypass Limitation. E 503.6 Submittals. Table E 503.5.13 Hot Gas Bypass Limitation |
| 389 | E 503.6.1 Construction Details. E 503.6.2 Supplemental Information. E 503.6.3 Manuals. E 503.6.3.1 Required Information. E 503.6.4 Labeling of Material and Equipment. E 503.6.5 Completion Requirements. E 503.6.5.1 Drawings. E 503.6.5.2 Manuals. E 503.6.5.3 System Balancing. E 503.6.5.3(A) Air System Balancing. E 503.6.5.3(B) Hydronic System Balancing. E 503.6.5.4 System Commissioning. |
| 390 | E 503.6.5.4(A) Minimum Level of Commission. E 503.7 Minimum Equipment Efficiency Tables. E 503.7.1 Minimum Efficiency Requirement Listed Equipment – Standard Rating and Operating Conditions. E 504.0 Solar Energy Systems. E 504.1 General. E 505.0 Geothermal Systems. E 505.1 General. E 505.1.1 Design, Installation and Testing. Table E 503.7.1(1) Electronically Operated Unitary Air Conditioners and Condensing Units Minimum Efficiency Requirements |
| 391 | Table E 503.7.1(2) Electronically Operated Unitary and Applied Heat Pumps Minimum Efficiency Requirements |
| 393 | Table E 503.7.1(3) Water Chilling Packages – Efficiency Requirements |
| 394 | Table E 503.7.1(4) Electrically Operated Packaged Terminal Air Conditioners, Packaged Terminal Single-Packed Vertical Air Conditioners, Single-Package Vertical Heat Pumps, Room Air Conditioners, and Room Air Conditioners Heat Pumps โ Minimum Efficiency Requirements |
| 395 | Table E 503.7.1(5) Warm Air Furnaces and Combination Warm Air Furnaces/Air-Conditioning Units, Warm Air Duct Furnaces and Unit Heaters |
| 396 | Table E 503.7.1(6) Gas and Oil-Fired Boilers, Minimum Efficiency Requirements Table E 503.7.1(7) Performance Requirements for Heat Rejection Equipment |
| 397 | Table E 503.7.1(8) Heat Transfer Equipment Table E 503.7.1(9) Minimum Duct Insulation R-Value, Cooling and Heating Only Supply Ducts and Return Ducts |
| 398 | Table E 503.7.1(10) Minimum Duct Insulation R-Value, Combined Heating and Cooling Supply Ducts and Return Ducts |
| 399 | E 505.1.2 Pipe Materials. E 505.1.3 Marking. E 505.1.4 Heat Pump Approval. E 601.0 Indoor Environment. E 601.1 Scope. E 602.0 Fireplaces. E 602.1 Requirements. E 602.1.1 Masonry or Factory-Built Fireplace. E 602.1.1.1 Opening Cover. E 602.1.1.2 Combustion Air Intake. Table E 503.7.1(11) Minimum Pipe Insulation Thickness |
| 400 | E 602.1.1.3 Accessible Damper Control. E 602.1.2 Prohibited. E 603.0 Pollutant Control. E 603.1 Indoor Air Quality During Construction. E 603.1.1 Temporary Ventilation During Construction. E 603.1.2 Indoor Air Quality After Construction. E 603.1.3 Covering of Duct Openings and Protection of Mechanical Equipment During Construction. E 603.2 Isolation of Pollutant Sources. E 603.3 Filters. E 603.4 Ozone Depletion and Global Warming Reductions. E 604.0 Indoor Moisture Control. E 604.1 Rainwater Control. E 605.0 Indoor Air Quality for Low-Rise Residential. E 605.1 General. E 605.1.1 Natural Ventilation. E 605.1.1.1 Access to Operable Openings. |
| 401 | E 605.1.2 Mechanical Ventilation. E 605.1.3 Whole-Building Ventilation. E 605.1.3.1 Different Occupant Density. E 605.1.3.2 Alternative Ventilation. E 605.1.3.3 Infiltration Credit. E 605.1.4 System Type. E 605.1.5 Control and Operation. Table E 605.1.3 Ventilation Air Requirements, (cubic foot per minute) |
| 402 | E 605.1.6 Delivered Ventilation. E 605.1.7 Restrictions on System Type. E 605.1.7.1 Hot, Humid Climates. E 605.1.7.2 Very Cold Climates. E 605.2 Bathroom Exhaust Fans. E 605.3 Filters. E 606.0 Indoor Air Quality for other than Low-Rise Residential Buildings. E 606.1 Minimum Indoor Air Quality. E 607.0 Environmental Comfort. E 607.1 Thermal Comfort Controls. E 608.0 Low VOC Solvent Cement and Primer. E 608.1 General. Table E 605.1.6 Ventilation Effectiveness for Intermittent Fans |
| 403 | E 608.1.1 Solvent Cement. E 608.1.2 Primer. E 701.0 Installer Qualifications. E 701.1 Scope. E 702.0 Qualifications. E 702.1 General. Part I E 801.0 Heating, Ventilation, Air Conditioning Systems Commissioning. E 801.1 Applicability. E 802.0 Commissioning. E 802.1 Commissioning Requirements. E 802.2 Ownerโs Project Requirements (OPR). E 802.3 Basis of Design (BOD). E 802.4 Commissioning Plan. E 802.5 Functional Performance Testing. |
| 404 | E 802.6 Post Construction Documentation and Training. E 802.6.1 Systems Manual. E 802.6.2 Systems Operations Training. E 802.7 Commissioning Report. Part II E 803.0 Commissioning Acceptance. E 803.1 General. E 803.2 Construction Documents. E 803.2.1 Roles and Responsibilities. E 803.2.1.1 Field Technician. E 803.2.1.2 Responsible Person. E 803.2.1.3 Certificate of Acceptance. E 804.0 Commissioning Tests. E 804.1 General. E 804.2 Tests. |
| 405 | E 804.3 Acceptance Process. E 804.3.1 Plan Review. E 804.3.2 Construction Inspection. E 804.3.3 Acceptance Testing. E 804.3.4 Certificate of Occupancy. E 805.0 HVAC System Tests. E 805.1 Variable Air Volume Systems (Form MECH-2A). E 805.1.1 Test Procedure. E 805.1.1.1 Construction Inspection. E 805.1.1.2 Functional Testing. |
| 406 | E 805.1.2 Acceptance Criteria. E 805.2 Constant Volume Systems (Form MECH-2A). E 805.2.1 Test Procedure. E 805.2.1.1 Construction Inspection. E 805.2.1.2 Functional Testing. E 805.2.2 Acceptance Criteria. E 805.3 Constant Volume, Single-Zone, Unitary Air Conditioner and Heat Pumps Systems Acceptance (Form MECH-3A). E 805.3.1 Test Procedure. E 805.3.1.1 Construction Inspection. E 805.3.1.2 Functional Testing. |
| 407 | E 805.3.2 Acceptance Criteria. E 805.4 Air Distribution Systems (Form MECH-4A). E 805.4.1 Test Procedure. E 805.4.1.1 Construction Inspection. E 805.4.1.2 Functional Testing. E 805.4.2 Acceptance Criteria. E 805.5 Air Economizer Controls Acceptance (Form MECH-5A). |
| 408 | E 805.5.1 Test Procedure. E 805.5.1.1 Construction Inspection. E 805.5.1.2 Functional Testing. E 805.5.2 Acceptance Criteria. E 805.6 Demand-Controlled Ventilation Systems Acceptance (Form MECH-6A). E 805.6.1 Test Procedure. E 805.6.1.1 Construction Inspection. E 805.6.1.2 Functional Testing. |
| 409 | E 805.6.2 Acceptance Criteria. E 805.7 Supply Fan Variable Flow Controls (Form MECH-7A). E 805.7.1 Test Procedure. E 805.7.1.1 Construction Inspection. E 805.7.1.2 Functional Testing. E 805.7.2 Acceptance Criteria. |
| 410 | E 805.8 Valve Leakage (Form MECH-8A). E 805.8.1 Test Procedure. E 805.8.1.1 Construction Inspection. E 805.8.1.2 Functional Testing. E 805.8.2 Acceptance Criteria. E 805.9 Supply Water Temperature Reset Controls (Form MECH-9A). E 805.9.1 Test Procedure. E 805.9.1.1 Construction Inspection. E 805.9.1.2 Functional Testing. E 805.9.2 Acceptance Criteria. E 805.10 Hydronic System Variable Flow Controls (Form MECH-10A). |
| 411 | E 805.10.1 Test Procedure. E 805.10.1.1 Construction Inspection. E 805.10.1.2 Functional Testing. E 805.10.2 Acceptance Criteria. E 805.11 Automatic Demand Shed Control (Form MECH-11A). E 805.11.1 Test Procedure. E 805.11.1.1 Construction Inspection. E 805.11.1.2 Functional Testing. E 805.11.2 Acceptance Criteria. E 805.12 Fault Detection and Diagnostics (FDD) for Packaged Direct-Expansion (DX) Units (Form MECH-12A). E 805.12.1 Test Procedure. E 805.12.1.1 Construction Inspection. |
| 412 | E 805.12.1.2 Functional Testing. E 805.12.2 Acceptance Criteria. E 805.13 Automatic Fault Detection Diagnostics (FDD) for Air Handling Units (AHU) and Zone Terminal Units (Form MECH-13A). E 805.13.1 Test Procedure. E 805.13.1.1 Functional Testing. E 805.13.1.1(A) Functional Testing for Air Handling Units. |
| 413 | E 805.13.1.1(B) Functional Testing for Zone Terminal Units. E 805.13.2 Acceptance Criteria. E 805.14 Distributed Energy Storage DX AC System (Form MECH-14A). E 805.14.1 Test Procedure. |
| 414 | E 805.14.1.1 Construction Inspection. E 805.14.1.2 Functional Testing. E 805.14.1.3 Calibrating Controls. E 805.14.2 Acceptance Criteria. E 805.15 Thermal Energy Storage (TES) System (Form MECH-15A). E 805.15.1 Test Procedure. E 805.15.1.1 Construction Inspection. |
| 415 | E 805.15.1.2 Functional Testing. E 805.15.2 Acceptance Criteria. E 806.0 Certificate of Acceptance Forms. E 806.1 General. |
| 416 | Appendix E Forms MECH-2A |
| 419 | MECH-3A |
| 422 | MECH-4A |
| 425 | MECH-5A |
| 428 | MECH-6A |
| 431 | MECH-7A |
| 433 | MECH-8A |
| 435 | MECH-9A |
| 437 | MECH-10A |
| 440 | MECH-11A |
| 442 | MECH-12A |
| 445 | MECH-13A |
| 449 | MECH-14A |
| 452 | MECH-15A |
| 456 | Appendix F โ Sizing of Venting Systems Serving Appliances Equipped with Draft Hoods, Category I Appliances, and Appliances Listed for Use with Type B Vents |
| 458 | F 1.0 Examples Using Single Appliance Venting Tables. TABLES FIGURES Figure F 1.0(a) Type B Double-Wall Vent System Serving a Single Appliance with a Type B Double- Wall Vent Figure F 1.0(b) Type B Double-Wall Vent System Serving a Single Appliance with a Single-Wall Metal Vent Connector Figure F 1.0(c) Vent System Serving a Single Appliance with a Masonry Chimney and a Type B Double-Wall Vent Connector |
| 459 | Figure F 1.0(d) Vent System Serving a Single Appliance Using a Masonry Chimney and a Single-Wall Metal Vent Connector Figure F 1.0(e) Asbestos Cement Type B or Single-Wall Metal Vent System Serving a Single Draft Hood-Equipped Appliance Figure F 1.0(f) Vent System Serving Two or More Appliances with Type B Double-Wall Vent and Type B Double-Wall Vent Connectors Figure F 1.0(g) Vent System Serving Two or More Appliances with Type B Double-Wall Vent and Single-Wall Metal Vent Connectors |
| 460 | Figure F 1.0(h) Masonry Chimney Serving Two or More Appliances with Type B Double-Wall Vent Connectors Figure F 1.0(i) Masonry Chimney Serving Two or More Appliances with Single-Wall Metal Vent Connectors Figure F 1.0(j) Asbestos Cement Type B or Single-Wall Metal Vent Systems Serving Two or More Draft Hood-Equipped Appliances Figure F 1.0(k) Use of Manifolded Common Vent Connectors |
| 461 | F 1.1 Example 1: Single Draft Hood-Equipped Appliance. Figure F 1.0(l) Use of Offset Common Vent Figure F 1.0(m) Multistory Gas Vent Design Procedure for Each Segment of System Figure F 1.0(n) Principles of Design of Multistory Vents Using Vent Connector and Common Vent Design Tables |
| 462 | F 1.2 Example 2: Single Fan-Assisted Appliance. F 1.3 Example 3: Interpolating Between Table Values. Figure F 1.1 Single Draft Hood-Equipped Appliance โ EXAMPLE 1 Figure F 1.2 Single Fan-Assisted Appliance โ EXAMPLE 2 |
| 463 | F 2.0 Examples Using Common Venting Tables. F 2.1 Example 4: Common Venting Two Draft Hood-Equipped Appliances. F 2.2 Example 5(a): Common Venting a Draft Hood-Equipped Water Heater with a Fan-Assisted Furnace into a Type B Vent. Figure F 2.1 Common Venting Two Draft Hood-Equipped Appliances โ EXAMPLE 4 |
| 464 | F 2.3 Example 5(b): Common Venting into an Interior Masonry Chimney. Figure F 2.2 Common Venting a Draft Hood-Equipped Water Heater with a Fan-Assisted Furnace into a Type B Double-Wall Common Vent โ EXAMPLE 5(a) |
| 465 | F 2.4 Example 5(c): Common Venting into an Exterior Masonry Chimney. Table F 2.3 Masonry Chimney Liner Dimensions with Circular Equivalents |
| 466 | F 3.0 Example of Combination Indoor and Outdoor Combustion Air Opening. |
| 467 | Table F 3.0 Standard Method: Required Volume, All Appliances |
| 468 | Appendix G โ Example Calculation of Outdoor Air Rate |
| 470 | G 1.0 Example Calculation. |
| 472 | Index โ A โ |
| 474 | โ B โ |
| 475 | โ C โ |
| 477 | โ D โ |
| 479 | โ E โ |
| 480 | โ F โ |
| 483 | โ G โ โ H โ |
| 484 | โ I โ |
| 485 | โ J โ โ K โ โ L โ |
| 486 | โ M โ โ N โ โ O โ |
| 487 | โ P โ |
| 488 | โ R โ |
| 489 | โ S โ |
| 490 | โ T โ |
| 491 | โ U โ โ V โ |
| 492 | โ W โ |
| 494 | History Note Appendix |
