前言:这是CSA Z317的第五版。2、医疗设施供暖、通风和空调（HVAC）系统的特殊要求，医疗设施和系统设计、施工和维护的一系列标准之一。它取代了2015年、2010年、2001年和1991年出版的之前版本。本标准适用于建筑师、工程师、规划师、顾问和医疗机构工作人员，以确保暖通空调系统的高效规划、设计、施工和维护。除设计和施工要求外，本标准还包括暖通空调系统的调试、操作、维护和监测要求，这些要求将降低建筑物居住者（包括患者、工作人员和访客）之间感染传播的风险。 本版本的重大变化包括:a）对用于类似或不同功能的房间和区域的暖通空调要求进行了澄清，包括对用于多个功能的设施区域的更严格要求；b） 当室外条件极端且室内条件超出HVAC设计范围时，HCF提供服务的附加指南；c） 活动水平增加的区域可能需要更高的空气交换率来维持空气质量的信息；d） 在断电期间，增强控制系统的电气系统要求，以确保系统的连续性；e） 与翻新或增加相关的暖通空调系统升级修订； f） 蒸汽和冷凝水管道系统化学处理要求的扩展；g） 扩大加热和冷却源冗余的要求；h） 室外进水口布置的其他考虑事项；i） 澄清管道安装加湿器的位置；j） 挠性管道的新规定；k） 对AIRs声光报警器的扩展要求；l） 关于在I类区域使用非吸气式扩散器的说明；m） 将吸入麻醉和镇痛气体清除要求与CSA Z7396一致。1.n） 一项关于正常无人占用服务区通风的新条款；o） 澄清局部加热或冷却装置的位置和排水要求； p） 与CSA Z8000中灾难性事件管理一致的灾难性暖通空调设备故障指南；q） HEPA过滤器测试和性能验证的新要求；r） 与MDT协商后，澄清暖通空调系统操作可能会在表1规定范围以外的某些情况下进行修改或操作；s） 表1列出了全身储存和太平间查看的新暖通空调设计标准；t） 表1中后处理区域暖通空调设计标准范围的扩展；u） 扩大表1中要求采取空气传播预防措施的患者的治疗室和手术室的暖通空调设计标准；v） 更新了表1中手术室和无菌芯的气流方向要求； w） 根据附录B中的等级更新医疗设施的示例；andx）附录C中的修订公式和计算。CSA集团承认，本标准的制定部分是由阿尔伯塔省、不列颠哥伦比亚省、马尼托巴省、新不伦瑞克省、纽芬兰和拉布拉多、西北地区、新斯科舍省、努纳武特、安大略省、爱德华王子岛、魁北克省、萨斯喀彻温省和育空省政府的财政支持实现的，由加拿大健康药物和技术协会（CADTH）管理。本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。CSA集团已将其作为加拿大国家标准发布。 范围:1.1本标准规定了HCF暖通空调系统的规划、设计、施工、调试、运行和维护要求。一般来说，这些要求比适用于非医疗机构的要求更严格。注:暖通空调系统设计的一般指南见附录A。表1提供了暖通空调系统的具体设计参数。1.2本标准a）规定了某些参数的最小值；b） 确定不同设计方案的适用性；c） 制定分区、控制和监控建议；和d）概述了节能的最佳实践。1.3本标准不排除使用设计概念，以及采用比本标准规定更严格的安装、操作和维护程序。 如果临床证据支持采取额外措施来提高HCF的安全性和有效性，则应在HVAC系统的设计、安装调试、运行和维护中考虑此类额外措施。1.4本标准适用于新建建筑、现有建筑的扩建和现有建筑的改建（改建包括空间功能或大小的改变，以及暖通空调设备的重新布置、更换或增加）。注:磨损或故障部件的“同类”更换通常被视为日常维护；然而，在更换主要部件时，应进行更深入的分析。见第5条。 8.4.1.5本标准不涉及建筑物的其他元件的要求，这些元件不是暖通空调系统的直接组成部分，但会影响这些系统的设计、性能或运行，包括但不限于建筑围护结构；b） 结构；c） 电力和照明系统；d） 管道系统；ande）消防系统。1.6在本标准中，“应”用于表示要求，即用户为遵守本标准而有义务满足的规定；“应该”用于表示建议或建议但不需要的建议；“可”用于表示一个选项或在标准范围内允许的选项。 注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）以定义其应用。1.7国际单位制给出的数值为本标准中的记录单位。括号中给出的值仅供参考和比较。

Preface:This is the fifth edition of CSA Z317.2,Special requirements for heating, ventilation, and air-conditioning (HVAC) systems in health care facilities, one of a series of Standards on the design, construction, and maintenance of health care facilities and systems. It supersedes the previous editions, published in 2015, 2010, 2001, and 1991.This Standard is intended for use by architects, engineers, planners, consultants, and health care facility staff to ensure the efficient planning, design, construction, and maintenance of HVAC systems. In addition to design and construction requirements, this Standard includes commissioning, operational, maintenance, and monitoring requirements for HVAC systems that will reduce the risk of transmission of infection among building occupants, including patients, staff, and visitors. Significant changes in this edition include the following:a) clarification of HVAC requirements for rooms and areas used for similar or different functions, including more stringent requirements for areas in a facility used for more than one function;b) additional guidance on HCFs providing services when outdoor conditions are extreme and when indoor conditions are outside of the HVAC design ranges;c) information on areas with increased activity level potentially requiring a higher air exchange rate to maintain air quality;d) enhanced electrical system requirements for control systems during loss of power to ensure continuity of systems;e) revisions for HVAC system upgrades associated with renovations or additions;f) expansion of requirements for chemical treatment of steam and condensate piping systems;g) expansion of requirements for heating and cooling source redundancy;h) additional considerations for the placement of outdoor intakes;i) clarification for the location of duct-mounted humidifiers;j) new provisions for flex ducting;k) expanded requirements for audible and visual alarms for AIRs;l) clarification on the use of non-aspirating diffusers in Type I areas;m) alignment of inhaled anaesthetic and analgesic gas scavenging requirements with CSA Z7396.1;n) a new clause on ventilation of normally unoccupied service areas;o) clarification on placement of local heating or cooling units and water removal requirements;p) guidance on catastrophic HVAC equipment failure in alignment with catastrophic event management in CSA Z8000;q) new requirements for HEPA filter testing and performance verification;r) clarification that HVAC system operation may be modified or operated in certain situations beyond the ranges specified in Table 1, in consultation with the MDT;s) new HVAC design criteria for Whole body storage and Morgue viewing in Table 1;t) expansion of HVAC design criteria for Scope reprocessing areas in Table 1;u) expansion of HVAC design criteria for Treatment and procedure rooms for patients requiring airborne precautions in Table 1;v) updated airflow direction requirements for the Operating room and Sterile core in Table 1;w) updated examples of health care facilities according to class in Annex B; andx) revised formulas and calculations in Annex C.CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of the governments of Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Northwest Territories, Nova Scotia, Nunavut, Ontario, Prince Edward Island, Québec, Saskatchewan, and Yukon, as administered by the Canadian Association for Drugs and Technology in Health (CADTH).This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.Scope:1.1This Standard provides requirements for the planning, design, construction, commissioning, operation, and maintenance of HVAC systems in HCFs. In general, these requirements are more stringent than those applied to non-health care facilities.Note: See Annex A for general guidelines on HVAC system design. Table 1 provides specific design parameters for HVAC systems.1.2This Standarda) specifies minimum values for certain parameters;b) establishes the suitability of different design options;c) establishes recommendations for zoning, controls, and monitoring; andd) outlines best practice for energy conservation.1.3This Standard is not intended to preclude the use of design concepts and the adoption of installation, operations, and maintenance procedures more stringent than those specified in this Standard. In cases where clinical evidence supports additional measures to improve the safety and efficacy of HCFs, such additional measures should be considered in the design, installation commissioning, operation, and maintenance of the HVAC system.1.4This Standard applies to new buildings, additions to existing buildings, and alterations to existing buildings (alterations include changes in function or size of spaces and the rearrangement, replacement, or addition of HVAC equipment).Note: "Like for like" replacement of worn or failed components is generally considered to be routine maintenance; however, a more in-depth analysis should take place when replacing major components. See Clause 5.8.4.1.5This Standard does not address requirements for other elements of a building that are not directly a part of the HVAC system but can affect the design, performance, or operation of these systems, including but not limited toa) building envelope;b) structure;c) electrical power and lighting systems;d) plumbing system; ande) fire protection system.1.6In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.1.7The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.