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BOS ISO 9459-4_2013

P803.70

Solar heating — Domestic water heating systems
Solar heating — Domestic water heating systems— Part 4:System performance characterization by
means of component tests and computer simulation

SKU: BOS ISO 9459-4_2013 Category: Product ID: 30114

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This International Standard specifies a method of evaluating the annual energy performance of solar water heaters using a
combination of test results for component performance and a mathematical model to determine an annual load cycle task
performance under specified weather and load conditions. The procedure is applicable to solar water heaters with integral
backup or preheating into a conventional storage or instantaneous water heater and to integral collector storage water
heaters. System operating requirements specified in this International Standard are for the purpose of determining an
annual performance rating for domestic water heaters. There are no product design or operation
requirements in this International Standard.

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IMPARTIALITY AND CONFIDENTIALITY STATEMENT
The Botswana Bureau of Standards (BOBS) understands the importance of impartiality and confidentiality in carrying out its management system certification activities. BOBS management is committed to gaining and maintaining the reputation, credibility and ultimately, confidence of its stakeholders in rendering its certification services. Additionally, BOBS strives to continuously manage foreseen potential conflicts of duty and interest and ensures objectivity of its activities under the management system certification. To achieve the above, BOBS shall identify, analyse, record and manage potential conflict of duty and interest to ensure that certification services are not provided within relationships that have been identified to pose an unacceptable threat to impartiality. An Impartiality Committee shall periodically review activities of the certification function to verify commitment to credibility and fairness. The Committee shall further assist in the development of policies relating to impartiality of providing certification activities. BOBS is committed to maintaining in strict confidence all information accessed while rendering the certification services and shall ensure that such information is not divulged to third parties without the Client’s written consent unless if required by law.
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