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Significance and Use
4.1 This guide is intended for on-site assessment of in-service operation by short term measurement of appropriate system functions under representative operating conditions.
4.2 Primary application is for residential systems and medium-size multi-family units or commercial buildings. Use of back-up conventional DHW heating system is assumed to augment solar heating.
4.3 This guide is intended for use by suppliers, installers, consultants and homeowners in evaluating on-site operation of an installed system. Emphasis is placed on simplified measurements that do not require special skills, intrusive instrumentation, system modification or interruption of service to the purchaser.
4.4 The purpose of this guide is to verify that the system is functioning. Copies of all data and reports must be submitted by the testing group to the owner or his or her designated agent.
4.5 Data and reports from these procedures and tests may be used to compare the system performance over time, but should not be used to compare different systems or installations.
4.6 Test is for a newly installed system and also for periodic checking.
1.1 This guide covers procedures and test methods for conducting an on-site inspection and acceptance test of an installed domestic hot water system (DHW) using flat plate, concentrating-type collectors or tank absorber systems.
1.2 It is intended as a simple and economical acceptance test to be performed by the system installer or an independent tester to verify that critical components of the system are functioning and to acquire baseline data reflecting overall short term system heat output.
1.3 This guide is not intended to generate accurate measurements of system performance (see ASHRAE standard 95-1981 for a laboratory test) or thermal efficiency.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ISO Standard9806 Test Methods for Solar Collectors
E823 Practice for Nonoperational Exposure and Inspection of a Solar Collector
E1056 Practice for Installation and Service of Solar Domestic Water Heating Systems for One- and Two-Family Dwellings
ASHRAE Standards93-1986 (ANSI B198.1-1977) Method of Testing to Determine the Thermal Performance of Solar Collectors Available from ASHRAE, 1791 Tullie Circle, N.E., Altanta, GA 30329. 95-1981 Method of Testing to Determine the Thermal Performance of Domestic Water Heating System
NIST Standard76-1137 Thermal Data Requirements and Performance Evaluation Procedures for the National Solar Heating and Cooling Demonstration Program Available from National Institute of Standards and Technology, Gaithersburg, MD 20899.
ICS Number Code 27.160 (Solar energy engineering)
UNSPSC Code 40101807(Solar heating units)