CSA C300-2018 pdf free download

CSA C300-2018 pdf free download.Energy performance and capacity of household refrigerators, refrigeratorfreezers, freezers, and miscellaneous refrigeration products.
If the model being tested has multiple defrost cycles for which compressor run time between defrosts is a fixed time of less than 14 h for all such cycles, and for which the compressor run time between defrosts for different defrost cycles are equal to or multiples of each other, the test time period shall be from one point of the defrost cycle with the longest compressor run time between defrosts to the same point during the next occurrence of this defrost cycle. For such products not using Clause 8.2.7.7 procedures, energy consumption shall be calculated as described in Clause 8.3.1.2.
8.2.7.4 Long-time automatic defrost
8.2.7.4.1 General
If the model being tested has a long-time automatic defrost system, the test period may consist of two parts, as follows:
a) The first part Is the same as specified in Clause 8.2.7.2 for a unit having no defrost provision.
b) The second part is designed to capture the energy consumed during all of the events occurring with the defrost control sequence (pre-cool, defrost. post-cool) that are outside of stable operation.
A cycling compressor system shall comply with Clause 8.2.7.4.2; a non-cycling compressor system shall comply with Clause 8.2.7.4.3.
8.2.7.4.2 Second part of the test for cycling compressor system
For a system with a cycling compressor, the second part of the test starts at the termination of the last regular compressor “ON’ cycle. The average temperatures of the fresh food and freezer compartments measured from the termination of the previous compressor “ON” cycle to the termination of the last regular compressor “ON” cycle shall both be within 0.3 C (0.5 F) of their average temperatures measured for the first part of the test. If any compressor cycles occur prior to the defrost heater being energized that cause the average temperature in either compartment to deviate from its average temperature for the first part of the test by more than 0.3 C (0.5 F), these compressor cycles shall not be considered regular compressor cycles and shall be included in the second part of the test. As an example, a “precooling’ cycle, which is an extended compressor cycle that lowers the temperature(s) of one or both compartments prior to energizing the defrost heater, shall be included in the second part of the test. The test period for the second part of the test shall end at the termination of the first regular compressor “ON” cycle after both compartment temperatures have fully recovered to their stable conditions. The average temperatures of the compartments measured from this termination of the first regular compressor “ON” cycle until the termination of the next regular compressor “ON” cycle shall both be within 0.3 C (0.5 F) of their average temperatures measured for the first part of the test. Figure 7 illustrates the concept of precooling and recovery, but does not represent all possible defrost cycles.
8.2.7.4.3 Second part of the test for non-cycling compressor system.CSA C300-2018 pdf free download.