CSA C840-12:2017 pdf download.Performance of pool pumps
1.1 The purpose of this Standard is to specify pool pump performance measurements that will facilitate the selection of the most efficient models for performing the combined functions of filtration and pool cleaning.
1.2 This Standard applies to energy performance of centrifugal pump units for the purpose of circulating and filtering water in residential permanently installed swimming pools that require a driver rated output up to and including 3730 watts (5 hp).
1.5 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; 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 (nonmandatory) to define their application.
Energy factor一water delivered divided by motor energy consumed at a particular head pressure,measured in litres/W-hr (gal/W-hr).
Flow rate - the volume of water transported in a given period of time, usually measured in litres per minute (US gallons per minute).
Gallon一for the purposes of this Standard, the liquid measure "gallon" refers to one US gallon.
Multi-speed - a pump motor capable of operating at two or more speeds and includes two-speed,three-speed, and variable-speed.
Nameplate power一the motor horsepower as listed on the serial plate. This is the measure by which a pump unit is typically sold.
Operating point一a point of intersection where the pump performance curve crosses one of the system curves (A, B or C).
Permanently installed swimming pool一a pool constructed in such a manner that it cannot be disassembled for storage.
Pump一a means for pumping liquid, excluding a driver.
Pump unit一a combination of a pump and an electric motor.
Storable swimming pool一a pool constructed in such a manner that it can be readily disassembled for storage and reassembled to its original integrity.
System curve一a graphical representation of the relationship between flow rate and total dynamic head for a given pump unit.
Total dynamic head (TDH) (or head) - the output pressure of the pump that overcomes all of the friction losses and pressure drops in the piping system.CSA C840-12 pdf download.