CSA Group CSA Z5000:26 National Standard of Canada Building commissioning for energy using systems

Preface

This is the second edition of CSA Z5000, Building commissioning for energy using systems. It supersedes the previous edition published in 2018.

This Standard provides requirements for the commissioning of systems affecting energy use and greenhouse gas (GHG) emissions in buildings.

This includes building enclosures, mechanical and plumbing systems, electrical systems, transportation equipment, and control systems. It applies to new construction of Part 3 Buildings and new systems installed in existing Part 3 Buildings, as defined by the National Building Code of Canada. The commissioning process and concepts contained in this Standard are based on CSA Z320 and CSA Z8001.

The purpose of this Standard is to provide consistent protocols and approaches for ensuring that energy-using systems are commissioned in a manner that achieves energy- and GHG-related performance targets. Where requirements of this Standard generally refer to energy, it is inferred that both the building enclosures and domestic water systems are included in the effort to improve energy and resource usage and reduce GHG emissions.

This edition includes the unique commissioning requirements of low carbon heating systems, particularly complex systems that may include both low carbon heating devices (e.g., heat pumps) as well as conventional heating equipment (e.g., gas boilers). Recognizing the complexities of commissioning mechanical equipment into new buildings, this Standard emphasizes rigorous testing and detailed attention throughout the building lifecycle to ensure that greenhouse gas (GHG) reduction objectives are effectively met.

With the publication in 2011 of CSA Z320, Building commissioning, the Technical Committee agreed to use CSA Z320 as the basis for a new standard. This Standard includes some of the CSA Z320 content, as well as additional requirements and guidance specific to requirements for monitoring building systems. It applies to new construction, to additions to existing buildings or facilities, and to new systems installed in existing buildings as a replacement.

CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of Natural Resources Canada, BC Hydro, Efficiency Manitoba, Hydro Québec, and the BC Ministry of Energy and Climate Change Solutions.

This Standard was prepared by the Subcommittee on Building Commissioning for Energy Using Systems, under the jurisdiction of the Technical Committee on Building Energy Systems and the Strategic Steering Committee on Performance, Energy Efficiency, and Renewables, and has been formally approved by the Technical Committee.

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

1.1 General

1.1.1 Application

This Standard provides guidelines for the commissioning of buildings and all energy and domestic water- related building systems. It applies to new construction of Part 3 Buildings and new systems installed in existing Part 3 Buildings, as specified in the National Building Code of Canada (NBC). It does not apply to the commissioning or recommissioning of existing systems, which is covered by CSA Z5001.

Notes:

1) Annexes A to Kare intended to supplement the main clauses of this Standard. They elaborate on general best practices that will assist in the commissioning process and provide additional guidance for those systems where commissioning does not follow a typical process. Where the term "monitoring" is used in these annexes, there is an inference that this will include energy and water metering equipment and systems.

2) Annex I describes when to consider the application of CSA Z5000 and CSA Z5001.

1.1.2 Commissioning work

This Standard is intended to assist the commissioning team in the preparation and implementation of a commissioning plan. This scope of work specifies commissioning requirements for building systems that affect GHG emissions, energy and domestic water usage, and includes, but is not limited to, descriptions of the following:

a) the commissioning process;

b) the resources required to complete commissioning;

c) the responsibilities of the commissioning team;

d) the sequence and integration of commissioning activities;

e) the functional testing and enhanced performance commissioning of energy-and water-related building systems;

f) planning for post-occupancy, including ongoing monitoring and maintenance, and measurement and verification activities; and

g) analyzing and providing data to assist in determining compliance with local energy efficiency regulations.

1.1.3 Relationship to other standards

This Standard is intended to be complementary to CSA Z320, with additions as appropriate to address the special requirements for verifying energy and GHG emissions performance during the commissioning of buildings and their systems.

Note: Annex I describes when to consider the application of CSA Z5000 and CSA Z5001.

1.2 Specific systems

1.2.1 Covered systems

The systems covered in this Standard are classified as

a) architectural and building enclosures;

b) vertical and horizontal transportation;

c) electrical and lighting;

d) mechanical and plumbing;

e) controls and building automation; and

f) energy monitoring and metering.

1.2.2 Exclusions

This Standard does not apply to

a) fire pumps;

b) smoke pressurization fans;

c) fire alarm and detection systems;

d) other life safety systems that operate only during testing or emergencies; and

e) equipment or systems exempt from the National Energy Code of Canada for Buildings (NECB).

1.3 Terminology

In 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.