CSA Group CSA C652:00 Installation of Electric Storage Tank and Heat Pump Water Heaters for Residential Use

Preface

This is the second edition of CSA Standard C652, lnstallution of Electric Storage Tank and Heat Pump Water Heaters for Residential Use. It supersedes the previous edition, published in 1992 under the title installation of Electric Storage Tank Water Heaters for Residential Use. This edition adds the requirements for the installation of heat pump water heaters.

This Standard provides guidance for the installation of electric storage tank and heat pump water heaters. It complements both the safety and the performance Standards and includes requirements for the installation of thermal insulation on water pipes, the use of heat traps, the use of a thermal break at the bottom of the water tank, and other items related to good installation practice.

This Standard was prepared by the Subcommittee on Water Heaters under the jurisdiction of the

Technical Committee on Residential Equipment and the Strategic Steering Committee on Performance, Energy Efficiency, and Renewables, and has been formally approved by the Technical Committee. It will be submitted to the Standards Council of Canada for approval as a National Standard of Canada.

November 2000

Notes:

(1) Use of the singular does not exclude the plural (and vice versa) when the sense allows.

(2) Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.

(3) This publication was developed by consensus, which is defined by CSA Policy governing standardization - Code of good practice for standardization as “substantial agreement. Consensus implies much more than a simple majority, but not necessarily unanimity”. It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this publication.

(4) CSA Standards are subject to periodic review, and suggestions for their improvement will be referred to the appropriate committee.

(5) All enquiries regarding this Standard, including requests for interpretation, should be addressed to CSA International, Standards Division, 7 78 Rexdale Boulevard, Toronto, Ontario MPW 7 R3.

Requests for interpretation should

(a) define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;

(b) provide an explanation of circumstances surrounding the actual field condition; and

(c) be phrased where possible to permit a specific “yes 0 or “no II answer.

Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are published in CSA’s periodical info Update. For subscription details, write to CSA Sales Promotion, Info Update, at the address given above.

1. Scope

1.1

This Standard specifies requirements for the installation of electric storage tank and heat pump water heaters intended for use in residential premises.

1.2

This Standard applies to

(a) electric storage tank water heaters with

(i)  volumes of 50-454 L (13-120 US gal); and

(ii) electrical heaters with power inputs up to 12 kW; and

(b) heat pump water heaters that have

(i)  a maximum current rating of 24 A;

(ii) a single-phase maximum voltage of 250 V; and

(iii) ancillary equipment necessary for the device to functior

1.3

This Standard is not intended to provide guidance in selecting the tank capacity for any given installation.

1.4

The values given in SI (metric) units are the standard. The values given in parentheses are for information only.