Apricus Solar Water Heating System Installation and Operation ...

3.27. Building ConsiderationsApricus Solar Collector Installation & Operation Manual - USAa) Penetration Through Fire-Rated Assemblies: Any piping that needs to penetrate fire-rated assembliesneeds to be prepared/finished in line with any relevant regulations.b) Roof Penetration: Depending on the location and local codes, there may be various acceptable meansof penetrating the roof. Flashing are often used to ensure a neat and water-tight penetration. Regardless ofthe method used, insulation of the solar lines and water-tightness must be ensured. Roof penetrations maynot impair the function of the enclosure. All roof penetrations must be sealed to prevent water, vermin or anyother intrusion.c) Direct Flow Systems: Main’s pressure direct flow systems using the pump circulation for freezeprotection must not terminate insulation at the flashing and begin again in the roof space. The exposedpipe at the flashing may freeze during a power outage in cold conditions. The insulation should passthrough the flashing and be sealed appropriately. If there is concern of water-tightness between theinsulation and flashing, a PVC pipe with an elbow facing down the roof pitch can be used, with the insulatedpipe passing through the PVC pipe. Ensure that the method used meets local code. The Apricus directflow pump station has a power outage valve that opens to allow water flow through the manifold to provideextra freeze protection.d) Structural Supports:i) Any points of attachment for the solar collector or other system components must be of suitablestructural strength to support the weight of the components plus any loads that may be encountered,such as wind or snow loading.ii) Any damage to structural supports caused by screws, drilled holes or other fastening methods mustnot undermine the structural integrity. Seek professional advice as required.e) Applicable Codes: All roof penetrations must meet applicable codes and practices put forth by theNational Roofing Contractors Association. All members penetrated by solar system components must meetrelevant codes.f) Adjacent Materials: Materials adjacent to the solar system components should not be exposed toelevated temperatures.3.28. Pressure & Temperature Relief Valve (PTRV)The storage tank must be fitted with a PTRV. All tanks should be supplied as standard with an approvedvalve.Copyright 2011 – Apricus Inc Doc: A7-05.4.1.4-PB-1.9 Page 37 of 126