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ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.: Recent submissions
Now showing items 21-40 of 2692
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Safety Standard for Refrigeration Systems
Abstract: This addendum provides capacity factors for overpressure protection of pressure vessels and pressure equipment for a number of new refrigerants and expands the coverage of capacity factors for existing refrigerants based ... -
High Performance Sequences of Operation for HVAC Systems
Abstract: This addendum revises the way the variable-speed series fan is controlled. Currently, the speed tracks the primary airflow. This revision maps the fan airflow set point from a minimum equal to the larger of the ventilation ... -
High Performance Sequences of Operation for HVAC Systems
Abstract: Approved by ASHRAE on January 27, 2020. This addendum was approved by a Standing Guideline Project Committee (SGPC) for which the Standards Committee has established a documented program for regular publication of addenda ... -
BACnet - A Data Communication Protocol for Building Automation and Control Networks
Abstract: Carl Neilson, BACnet International, 61 Seagirt Road, BC, V9Z 1A3. This request for interpretation refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.56 and Table 12.71, regarding the presence ... -
Ventilation and Acceptable Indoor Air Quality in Residential Buildings
Abstract: Background: Since 2007, Section 4.1 (Ventilation Rate) of ASHRAE Standard 62.2 has stated that “each dwelling unit” is to be provided with “outdoor air” at the rate specified. This rate is understood to be the minimum ... -
BACnet - A Data Communication Protocol for Building Automation and Control Networks
Abstract: Duffy O'Craven, 1600 Beacon St. #806 Brookline, MA 02446 This request for interpretation refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.57, regarding writing when State_Change_Values ... -
BACnet - A Data Communication Protocol for Building Automation and Control Networks
Abstract: Brandon DuPrey, Johnson Controls, 507 E. Michigan St, Milwaukee, WI 53219. This request for interpretation refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.56.11 Network_Number. The standard ... -
A Data Communication Protocol for Building Automation and Control Networks
Abstract: This document lists errata additions to ANSI/ASHRAE Standard 135.1-2019 as of the above date. Each entry is cited first by clause, then page number, except where an erratum covers more than one clause. Changes are indicated ... -
SAFETY STANDARD FOR REFRIGERATION SYSTEMS
Abstract: Background: ASHRAE STD 15-2019 Section 9.3.1.1 states: 9.3.1.1 Pressure vessels having inside dimensions of 6 in. (152 mm) or less shall be a. listed either individually or as part of an assembly by an approved, nationally ... -
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Ventilation of Health Care Facilities
Abstract: This request for interpretation refers to the requirements in ANSI/ASHRAE/ASHE Standard 170-2017, Section 7.4.1a and Note o to Table 7.1, regarding operating room maximum velocity of diffuser. Section 7.4.1a specifies an ... -
Ventilation of Health Care Facilities
Abstract: However, §7.1.a.6.i is not permitted by ASHRAE Standard 62.1. I don't believe Standard 170 means to allow systems with Standard 62.1 space to use a method of calculation that fails to comply with Standard 62.1. Any system ... -
Ventilation of Health Care Facilities
Abstract: Background: Exhaust discharge outlets … shall additionally be arranged to discharge to the atmosphere in a vertical direction (with no rain cap or other device to impede the vertical momentum) and at least 10 ft (3 m) ... -
Ventilation and Acceptable Indoor Air Quality in Residential Buildings
Abstract: Several questions have arisen from users of the standard and within the SSPC regarding requirements for installation and operation of mechanical ventilation systems. The changes in this addendum are intended to clarify ... -
BACnet - A Data Communication Protocol for Building Automation and Control Networks
Abstract: This document lists all known errata to ANSI/ASHRAE Standard 135-2016 as of the above date. Each entry is cited first by clause, then page number, except where an erratum covers more than one clause. The back page marking ... -
Ventilation of Health Care Facilities
Abstract: Addendum c provides guidance to users of Standard 170 on how to incorporate air classifications into their design of Standard 170 spaces if they are required to use them in conjunction with ASHRAE Standard 62.1. Note: In ... -
Ventilation of Health Care Facilities
Abstract: The single most common spaces in hospitals are hallways and corridors. Circulation spaces can make up 15%-20% or more of a hospital's occupiable area (sq.ft.). In generally, hospitals have a full quarter mile of hallways ... -
Ventilation of Health Care Facilities
Abstract: Approved by ASHRAE Standard Committee and the ASHRAE Board of Directors on February 5, 2020; by the American Society for Healthcare Engineering on December 19, 2019; and by the American National Standards Institute on March ... -
Ventilation of Health Care Facilities
Abstract: Addendum p incorporates updates to Table 7.1. a. A column is created indicating spaces where unoccupied turndown is acceptable. b. Table 6.4 is incorporated into Table 7.1 to remove confusion so that filter requirements ... -
Ventilation of Health Care Facilities
Abstract: Addendum i changes Section 6.6 to clarify requirements for water in humification systems. Note: In this addendum, changes to the current standard are indicated in the text by underlining (for additions) and strikethrough ...