Draft Details

Designation:C743
Source:CSA
Review start date:May 3, 2022
Review end date:Jul 2, 2022
Categories:Energy
Contact email:mary.morgan(at)csagroup.org
Draft Scope/Description:

1 Scope

1.1 Vapour Compression Chilling Package Scope

This Standard applies to factory-designed and prefabricated vapour-compression Water-chilling and Water-Heating Packages that include one or more compressors. 

1.1.1 Included Vapour Compression Chilling Package Scope

The vapour-compression Water-chilling and Water-heating Packages include;

- Water-cooled, air-cooled, or evaporatively-cooled condensers
- Water-cooled heat recovery condensers
- Air-to-water heat pumps
- Water-to-water heat pumps with a capacity greater or equal to 40 kW

1.1.2   Excluded Vapour Compression Product Scope

The following products are excluded and not covered by this standard;
Water-to-water heat pumps with a Capacity less than 40 kW are covered by the latest edition of  CSAN/CSA standard 13256-2.

Air-to-water units designed exclusively to heat potable water as covered by the latest edition of C745

Water-chilling Packages are excluded when the condenser is actively adiabatically-cooled.

1.2 Absorption Chilling Package Scope

This Standard applies to water-cooled water chilling packages using lithium bromide refrigerant including the following:

1.2.1. Included water-cooled absorption chilling package Scope;

- water-cooled Single-effect steam,
- hot water operated Water-Chilling units,
- water-cooled Double-effect steam,
- water cooled hot water operated double effect water-chilling units,

double-effect direct-fired (natural gas, oil, LP gas) water-chilling/heating units.  .

1.2.2 Excluded water-cooled absorption chilling package Scope.

absorption chiller/heater units with air-cooled condenser,

applications employing heat pumping or exhaust gas firing

absorption chillers not using lithium bromide

 

1.3 Requirements

In CSA Standards, “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; “may” is used to express an option or that which is permissible within the limits of the standard; and “can” is used to express possibility or capability. 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.

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