THE DEFINITIVE COMPANION TO STANDARD 62.1 This companion guide provides detailed information on the requirements of ANSI/ASHRAE Standard 62.1-2016 and includes tables, illustrations, and examples to aid users in designing, installing, and operating systems for ventilation in buildings.Standard 62.1 User’s Manual does not reproduce the requirements of the standard but rather paraphrases and elaborates upon them. Intended to be used in conjunction with the standard, this manual provides Information on the intent and application of Standard 62.1 Sample calculations and examples Best practices for applying the principles of good indoor air quality (IAQ) and effective ventilation when designing buildings and building systems Useful reference material Guidance for building operation and maintenance personnel Instructions for the user in the application of tools used for compliance with ANSI/ASHRAE Standard 62.1-2016 Also included is an exclusive link to the newly revised web-based spreadsheets that aid in ventilation rate procedure calculations. This manual is intended for architects, engineers, manufacturers, plan examiners, field inspectors, general and specialty contractors, and operation and maintenance personnel. Standard 62.1 User’s Manual is a crucial supplement for professionals concerned with ventilation and indoor air quality.

PDF Catalog

PDF Pages	PDF Title
4	Contents
6	Figures
7	Tables
8	Examples
10	Preface General Information Audience Addenda
11	Official Interpretations ASHRAE Standard 62.1 Organization
12	Organization and Use of the User’s Manual Data and Analysis Tools
13	Acknowledgments
14	1. Purpose Overview (§1.1) Regulatory Application (§1.2) Existing Buildings (§1.3)
15	2. Scope Spaces Covered (§2.1) Scope of Requirements (§2.2) Industrial Spaces, Laboratories, Healthcare, and Other Spaces (§2.3)
16	No Retroactive Application (§2.4) No Recommended Ventilation Rates for Smoking (§2.5) Basis of Ventilation Requirements (§2.6) Thermal Comfort (§2.7) Sources of Contaminants (§2.8)
17	Limitations of the Standard (§2.9)
20	3. Definitions, Abbreviations, and Acronyms Definitions
21	Abbreviations and Acronyms
24	4. Outdoor Air Quality Overview Regional Air Quality (§4.1)
25	Figure 4-A – Outdoor Air Quality Flow Chart Table 4-A – NAAQS Table
26	Figure 4-B – Example of Counties Designated Nonattainment by EPA for One or More NAAQS Pollutants Note that the data on this figure are illustrative since it is frequently updated. It was downloaded on October 17, 2016 from www3.epa.gov/airquality/greenbook/mapnpoll.html. For current information, see www.epa.gov.
27	Local Air Quality (§4.2)
28	Figure 4-C – PM10 Air Monitoring Sampler Photo courtesy Oregon Department of Environmental Quality Figure 4-D – Denver Air Quality Denver has a history of air quality problems. Because of the local topography and weather patterns, pollution from urban sources is sometimes suspended over the metropolitan area, resulting in a “brown cloud” over the region. The EPA has classified th…
29	Figure 4-E – Air Monitoring Station Documentation (§4.3) Regional Air Quality Compliance Local Air Quality Survey Information
31	Summary
32	5. Systems and Equipment Overview Figure 5-A – Key to Ventilation System Requirements Ventilation Air Distribution (§5.1) Designing for Air Balancing (§5.1.1)
33	Plenum Systems (§5.1.2) Figure 5-B – Plan of Correct Plenum System with Direct Ducting This design meets the requirement because balancing dampers may be adjusted to ensure that the proper share of outdoor air is delivered to each fan system.
34	Figure 5-C – Plan of Correct Plenum System with Separate Outdoor Air Inlets In this case, the design meets the requirements because outdoor air is provided separately to each ventilation zone. Figure 5-D – Plan of Incorrect Plenum System In this case, outdoor air ventilation air is provided to one ventilation zone, but not the other. This could only meet the requirements if it could be shown that sufficient air gets to the remote system, perhaps by mixing between the zones
35	Figure 5-E – Plan of Correct Plenum System with Discharge Near Terminal Ends Though the ducts are not connected to the terminal units, they discharge near them, with balancing means available to provide correct airflow to each. Documentation (§5.1.3)
36	Exhaust Duct Location (§5.2) Figure 5-F – Correct Exhaust Duct, Negatively Pressurized The fan is located at the exterior wall which causes the duct to be negatively pressurized. Any leaks in the ductwork will result in flow into the duct from the surrounding space.
37	Figure 5-G – Incorrect Exhaust Duct, Pressurized and Not Seal Class A The portion of the ductwork downstream of the exhaust fan will have positive pressure relative to the surrounding space. Any leaks in the ductwork will result in exhaust air escaping from the system. Figure 5-H – Correct Exhaust Duct Pressurized duct is only allowed for systems carrying Class 2 air or air from residential kitchen hoods and when it is sealed in accordance with SMACNA Seal Class A. Ventilation System Controls (§5.3)
38	Constant-Volume, Single-Zone Systems Variable-Air-Volume System
39	Figure 5-I – Typical Ventilation System Controls Airstream Surfaces (§5.4)
40	Resistance to Mold Growth (§5.4.1) Resistance to Erosion (§5.4.2) Figure 5-J – Airstream Surfaces Outdoor Air Intakes (§5.5)
41	Location (§5.5.1)
42	Figure 5-K – Outdoor Air Intake Locations
43	Table 5-A – Air Intake Minimum Separation Distance This is a reproduction of Table 5.5.1 from ASHRAE Standard 62.1-2016
44	Figure 5-L – “Stretched-String” Method Rain Entrainment and Intrusion (§5.5.2 and §5.5.3)
45	Figure 5-M – Correct Rain Hood Dashed line represents the horizontal plane. Air and water cannot enter without passing upward through the horizontal plane. Figure 5-N – Incorrect Rain Hood Dashed line represents the horizontal plane. Air and water can enter while traveling downward. Snow Entrainment (§5.5.4)
46	Figure 5-O – Outdoor Air Intake to Prevent Snow Intrusion
47	Bird Screens (§5.5.5) Local Capture of Contaminants (§5.6) Combustion Air (§5.7)
48	Particulate Matter Removal (§5.8) Dehumidification Systems (§5.9) Relative Humidity (§5.9.1)
50	Exfiltration Through the Building Envelope (§5.9.2) Exception to the exfiltration requirement:
54	Drain Pans (§5.10)
55	Drain Pan Slope (§5.10.1) Drain Outlet (§5.10.2) Figure 5-P – Compliant Drain Pan, End View Figure 5-Q – Compliant Drain Pan, Plan View Drain Seal (§5.10.3)
56	Pan Size (§5.10.4) Figure 5-R – Condensate Drain Pan Seal Finned-Tube Coils and Heat Exchangers (§5.11) Drain Pans (§5.11.1)
57	Figure 5-S—Compliant Drain Pan, Side View Finned-Tube Coil Selection for Cleaning (§5.11.2)
58	Figure 5-T – Finned-Tube Coil Cleanability Table 5-B— Typical Dry Coil Pressure Drop in Inches of H20 at 500 fpm Humidifiers and Water-Spray Systems (§5.12) Water Quality (§5.12.1) Obstructions (§5.12.2)
59	Figure 5-U – Humidifier/Water-Spray System Access for Inspection, Cleaning, and Maintenance (§5.13) Equipment Clearance (§5.13.1) Ventilation Equipment Access (§5.13.2)
60	Figure 5-V – Air Distribution System Access Air Distribution System (§5.13.3) Building Envelope and Interior Surfaces (§5.14)
61	Building Envelope (§5.14.1) Weather Barrier Vapor Retarder
62	Caulking and Sealing Soil Gases Condensation on Interior Surfaces (§5.14.2)
63	Buildings with Attached Parking Garages (§5.15) Air Classification and Recirculation (§5.16) Classification (§5.16.1)
64	Redesignation (§5.16.2)
65	Figure 5-W – Recirculation Restrictions for Classified Air Arrows show allowed recirculation or transfer paths. All other pathways are prohibited. Recirculation Limitations (§5.16.3) Documentation (§5.16.4)
66	ETS Areas and ETS-Free Areas (§5.17)
67	Figure 5-X – Summary of ETS Requirements
68	Classification (§5.17.1) Engineering Analysis Pressure Differential Measurement
69	Airflow Measurement Figure 5-Y – ETS Exception for Dwelling Units Pressure Exception for Dwelling Units and Adjacent Properties
71	Pressure Exception for Hazardous Materials
74	Physical Separation (§5.17.3)
75	Transfer Air (§5.17.4) Recirculation (§5.17.5)
76	Exhaust Systems (§5.17.6) Signage (§5.17.7)
77	Figure 5-Z – ETS Signage Requirements Reclassification (§5.17.8)
78	6. Procedures General (§6.1)
79	Ventilation Rate Procedure (§6.2) Rationale for Ventilation Rate Procedure
80	Two Component Approach and Additivity
81	Determining Component Ventilation Rates
84	Table 6-A – Ra and Rp Values by Occupancy Type
85	Ventilation Efficiency Figure 6-A – Breathing Zone
87	Figure 6-B – Ventilation Rate Procedure Flow Chart
88	VRP Summary Outdoor Air Treatment (§6.2.1) Particulate Matter (§6.2.1.1 and §6.2.1.2)
89	Ozone (§6.2.1.3)
91	Other Outdoor Contaminants (§6.2.1.4)
92	Zone Calculations (§6.2.2)
93	Determine Occupant and Building Rate Requirements, Rp and Ra (§6.2.2.1) Estimate the Number of Occupants in the Zone, Pz (§6.2.2.1.1)
94	Calculate the Net Occupiable Floor Area, Az Calculate the Outdoor Air Required in the Breathing Zone, Vbz
95	Table 6-B – Zone Air Distribution Effectiveness
97	Determine the Zone Air Distribution Effectiveness, Ez (§6.2.2.2) Calculate the Minimum Zone Outdoor Air Rate Required at the Supply Air Outlets, Voz (§6.2.2.3)
99	System Calculations Single-Zone Systems (§6.2.3) 100% Outdoor Air Systems (§6.2.4)
100	Multiple-Zone Recirculating Systems (§6.2.5) Determine System Ventilation Efficiency, Ev (§6.2.5.2)
102	Figure 6-C – System with Multiple Recirculation Paths
103	Determine the Occupant Diversity (D) (§6.2.5.3.1)
104	Calculate the Uncorrected Outdoor Air Rate (Vou) (§6.2.5.3) Calculate System Outdoor Air Rate (Vot) (§6.2.5.4)
116	Designing for Varying Operating Conditions (§6.2.6) Variable Load Conditions (§6.2.6.1) Time Averaging (§6.2.6.2)
118	Table 6-C – Typical Averaging Times
122	Dynamic Reset (§6.2.7) Demand Control Ventilation (DCV) (§6.2.7.1)
123	Ventilation Efficiency (§6.2.7.2) Outdoor Air Fraction (§6.2.7.3)
124	Indoor Air Quality Procedure (§6.3)
125	Compliance Requirements
126	Figure 6-D – IAQ Procedure Flow Chart
127	Contaminant Sources (§6.3.1)
129	Contaminant Concentration (§6.3.2)
130	Perceived Indoor Air Quality (§6.3.3) Design Approach (§6.3.4)
131	Combination of IAQP with the VRP (§6.3.5)
132	Documentation (§6.3.6)
135	Natural Ventilation Procedure (§6.4)
136	Prescriptive Requirements (§6.4.1, §6.4.2, and §6.4.3)
137	Exception to Prescriptive Requirements (Exception a to §6.4)
141	Exhaust Ventilation (§6.5) Prescriptive Compliance Path (§6.5.1)
142	Performance Compliance Path (§6.5.2)
144	Design Documentation Procedures (§6.6)
145	7. Construction and System Start-Up General Construction Phase (§7.1) Filters (§7.1.2) Protection of Materials (§7.1.3)
146	Protection of Occupied Areas (§7.1.4)
147	Air Duct System Construction (§7.1.5)
149	System Start-Up Phase (§7.2) Application (§7.2.1) New Air Handler Limited Alterations Air Balancing (§7.2.2)
150	Testing of Drain Pans (§7.2.3)
151	Cleanliness (§7.2.4) Testing of Outdoor Air Dampers (§7.2.5) System Documentation (§7.2.6)
152	Table 7-A – Required Documents Compared to Common Contract Closeout Practice Comments Additional ASHRAE Standard 62.1 Requirements Common Practice for Contract Closeout* This may require the designer to prepare the system operating procedures. Not merely equipment submittals, but actual operating and maintenance procedure manuals or instructions must be included, not just for individual components, but for the system as a whole. Basic data relating to the operation and maintenance of ventilation systems and equipment as installed The controls vendor and/or designer might provide the maintenance or calibration information. Controls maintenance and/or calibration information HVAC controls information consisting of diagrams, schematics and control sequence narratives A standard complete report will document much more than required. None An air balance report documenting the work performed for §7.2.2 Control drawings are required. These may be included in the diagrams listed above. Construction drawings of record and final design drawings This will likely require that the designer document assumptions in a form that can be easily transferred. Design criteria and assumptions for the ventilation design—in order to be useful, this would normally include all the calculations required by §6.2 if the ventilation rate procedure is used. If the design is based on the IAQ Procedure (§6.3), then additional assumptions related to contaminant sources and concentrations must be included.
153	8. Operation and Maintenance General (§8.1) Application (§8.1.1)
154	Building Alterations or Change of Use (§8.1.2)
155	Operation and Maintenance Manual (§8.2)
156	Ventilation System Operation (§8.3) Ventilation System Maintenance (§8.4)
157	Water Intrusion (Table 8.2, item a)
159	A. Appendix Dynamic Ventilation Reset Control Overview Demand-Controlled Ventilation (DCV)
160	Fundamentals of CO2-Based DCV Figure A-A – Single-Zone CO2
162	Table A-A – Typical Met Levels for Various Activities
163	Table A-B – Steady State CO2 Concentrations at 400 ppm Ambient Steady-State Assumption
164	Control of Single-Zone Systems with Airflow Measurement Breathing Zone Parameters, Rp, Pz, Ra, Az Zone Air Distribution Effectiveness, Ez Activity Level Indoor Concentration Outdoor CO2 Concentration
165	Single-Zone DCV Control Sequence Control of Constant-Volume Systems without Airflow Measurement
167	Figure A-B – CO2 DCV for Packaged Air-Conditioning Unit Control of Multiple-Zone Systems
168	CO2-based Dynamic Reset (CO2-based DR) Control Sequence
170	Outdoor Air Fraction/Ventilation Efficiency-Based Dynamic Reset
171	Zone Controls Air Handler Controls
172	Index

Published By	Publication Date	Number of Pages
ASHRAE	2016	176


PDF Format	Searchable	Printable	Preview Now

Standard Title	ASHRAE Standard 62.1 User's Manual: Based on Standard 62.1-2016, Ventilation for Acceptable Indoor Air Quality (ANSI Approved)
Published Code	ASHRAE
Publication Date	2016
Pages Count	176

ASHRAE 62.1 2016 UM

PDF Catalog

Related products