ASTM E683-91(R2021) pdf free download

ASTM E683-91(R2021) pdf free download.Standard Practice for Installation and Service of Solar Space Heating Systems for One- and Two-Family Dwellings
1. Scope
1.1 This practice covers solar space heating systems for one- and two-family dwellings. It sets forth acceptable instal- lation and service practices to help ensure adequate performance, safety, and consumer satisfaction. 1.2 This practice is intended to describe acceptable practices for space heating systems in new and existing dwellings and shall not be construed as the optimization of good practices. 1.3 This practice does not apply to Rankine cycle, heat pump, or high pressure vapor systems. 1.4 This practice is not intended to abridge safety or health requirements. All systems shall be installed in accordance with local codes and ordinances. 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 appro- priate safety, health, and environmental practices and deter- mine the applicability of regulatory limitations prior to use. (For specific safety precautions, see Section 6). 1.6 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
4. Collector Subsystems
4.1 Collectors shall be installed in accordance with the instructions provided by the collector manufacturer and designer, in compliance with local codes and ordinances. 4.2 Structural supports shall be constructed to support the collector under all anticipated extremes of environmental conditions and to withstand local conditions and anticipated loads, such as wind, earthquake, rain, snow, ice, and freezing temperatures, so that the solar system does not impair the resistivity to damage of the building. Additional weight of collectors shall not exceed dead weight limitations of the building structure, foundation, or soil. Conversely, collector supports shall not impose undue stresses on the collectors. 4.3 Structural supports shall be constructed to maintain collector tilt and orientation within design conditions through- out the life of the solar system. 4.4 Structural supports shall be installed in a manner such that the integrity, weather resistance, and fire resistance of the building are not adversely affected. Joints between support structures and building shall be caulked or flashed, or both, to prevent water leakage. Access shall be provided to permit minor repairs to flashing and caulking without disturbing roof, collector supports, or collector panels. 4.5 Collectors shall be installed so as not to contribute to moisture buildup, rotting, or other accelerated deterioration of roofing materials. 4.6 Collectors and supports shall be installed in a manner such that water flowing off the collector surface will not accumulate on the roof surfaces, so as to form ice dams or cause water damage to the building, or both. Provisions shall be taken to minimize buildup of snow upon collectors, which may reduce their effectiveness. 4.7 Structural supports shall be selected and installed in a manner, such that thermal expansion ofcollector will not cause damage to the collector, structural frame, or building.4.8 Pipe hangers, supports, expansion devices, and insula- tion shall be provided to compensate for thermal expansion effects and to minimize thermal losses. Care shall be exercised during their installation to prevent damage to connections on the collector or collector casing. 4.9 Interconnecting piping or ducting shall be installed to minimize flow restrictions and to provide balanced flow. Piping shall be installed to allow for filling and draining. 4.10 Safe access to components subject to deterioration or failure, such as rubber hoses, joint sealants, and cover plates shall be provided to allow for maintenance or repair. For roof-mounted collectors, the work space adjacent to collectors and provisions for safe placement of ladders shall be consid- ered. 4.11 Safety protection shall be provided to prevent injury to personnel from contact with readily accessible hot surfaces. 4.12 Collectors mounted at ground level shall be provided with protective fencing, guard rails, and warning signs in compliance with local codes and ordinances. 4.13 Protection of collectors and components shall be pro- vided during handling and installation to prevent damage from environmental exposure.