{"id":519127,"date":"2024-11-05T14:52:47","date_gmt":"2024-11-05T14:52:47","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/csa-c74520\/"},"modified":"2024-11-05T14:52:47","modified_gmt":"2024-11-05T14:52:47","slug":"csa-c74520","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/csa\/csa-c74520\/","title":{"rendered":"CSA C745:20"},"content":{"rendered":"

Preface<\/strong><\/p>\n

<\/p>\n

This is the fourth edition of CSA C745, Energy efficiency of electric storage tank water heaters and heat pump water heaters.<\/em> It supersedes the previous editions published in 2003, 2000, and 1995. This Standard provides a standard method for measuring the performance of these water heaters and establishes a minimum acceptable operating efficiency level for electric storage tank water heaters.<\/p>\n

<\/p>\n

This Standard has been updated to be compatible with the latest requirements of the United States Department of Energy (DOE) publication 79 FR 40541 published in July 2014.<\/p>\n

<\/p>\n

CSA acknowledges that the development of this Standard was made possible, in part, by the financial support of Natural Resources Canada (NRCan), BC Hydro, Manitoba Hydro, Hydro-Qu\u00e9bec, Canadian Electricity Association (CEA), and Independent Electricity System Operator (IESO).<\/p>\n

<\/p>\n

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.<\/p>\n

<\/p>\n

Scope<\/strong><\/p>\n

<\/p>\n

1.1<\/p>\n

This Standard specifies the methods for determining the uniform energy factor for electric storage tank water heaters and heat pump water heaters.<\/p>\n

<\/p>\n

1.2<\/p>\n

This Standard<\/p>\n

<\/p>\n

a) establishes minimum energy efficiency levels for electric storage tank water heaters and heat pump water heaters; and<\/p>\n

<\/p>\n

b) includes advanced test methods for cold climate ratings (see Annex B).<\/p>\n

<\/p>\n

1.3<\/p>\n

This Standard applies to<\/p>\n

<\/p>\n

a) electric storage tank water heaters<\/p>\n

<\/p>\n

i) with volumes of 7.6 to 454 L (2 to 120 US gal);<\/p>\n

<\/p>\n

ii) having electric heater elements with power inputs = 12 kW; and<\/p>\n

<\/p>\n

iii) designed to heat and store water at a thermostatically controlled temperature equal to or less than 82 \u00b0C (180 \u00b0F); and<\/p>\n

<\/p>\n

b) heat pump water heaters that have<\/p>\n

<\/p>\n

i) a maximum current rating of = 24 A (including the compressor and all auxiliary equipment such as fans, pumps, controls, and, if on the same circuit, any resistive elements);<\/p>\n

<\/p>\n

ii) a maximum wattage rating = 15 kW;<\/p>\n

<\/p>\n

iii) a single-phase maximum voltage of = 250 V;<\/p>\n

<\/p>\n

iv) volumes of 7.6 to 454 L (2 to 120 US gal); and<\/p>\n

<\/p>\n

v) rated storage volume = 454 L (= 120 US gal).<\/p>\n

<\/p>\n

1.4<\/p>\n

This Standard does not apply to high-temperature water heaters.<\/p>\n

<\/p>\n

1.5<\/p>\n

The tests contained in this Standard are not intended to represent actual efficiencies realized in the field. Instead, these tests provide a standardized method of comparing performance.<\/p>\n

<\/p>\n

1.6<\/p>\n

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.<\/p>\n

<\/p>\n

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.<\/p>\n

<\/p>\n

Notes to tables and figures are considered part of the table or figure and may be written as requirements.<\/p>\n

<\/p>\n

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.<\/p>\n

<\/p>\n

1.7<\/p>\n

The 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.<\/p>\n","protected":false},"excerpt":{"rendered":"

Energy efficiency of electric storage tank water heaters and heat pump water heaters<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
CSA<\/b><\/a><\/td>\n2020-06-01<\/td>\n62<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":519140,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[458,1278,2674],"product_tag":[],"class_list":{"0":"post-519127","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-27-080","7":"product_cat-91-140-65","8":"product_cat-csa","10":"first","11":"instock","12":"sold-individually","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/519127","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/519140"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=519127"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=519127"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=519127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}