SOLAR POOL HEATER PLUMBING LAYOUTS
SINGLE ROW PLUMBING LAYOUT
Single Row: Connect the solar pool heater’s PVC feed line to the bottom corner at one end of the panel array. Connect the PVC return line to the top corner at the opposite end of the array. This diagonal plumbing configuration helps provide balanced water flow through all panels.​
Important: Do not connect the PVC feed and return lines at the same end of the panel array. This can create uneven water flow and reduce heating performance through the panels at the opposite end of the array. See the “Bottom End Feed / Same Top End Return” diagram below.
DOUBLE ROW PLUMBING LAYOUT
Double Row: The solar pool heater’s PVC feed line supplies the bottom corner of both panel arrays, while the PVC return lines connect to the opposite top corner of each array. This configuration helps provide balanced water flow through both panel rows.
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Important: The return lines from both panel rows must join together at the highest point of the solar heating system before the combined return line runs back to the pool equipment.
Important: All bottom panel headers and PVC feed lines must be installed to allow the system to drain completely by gravity. In tropical and subtropical climates, panels and feed lines may be installed level. In northern or freeze-prone climates, they must slope 1/4" per foot toward the feed line to promote proper drainage.
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For complete drainage and installation requirements, refer to the Techno-Solis Installation Manual.
SPLIT ROW / SPLIT ROOF / MIXED SIZES PLUMBING LAYOUT
Split Row / Split Roof / Mixed Sizes: When a single continuous panel row is not possible due to roof layout, available space, or obstructions, the solar array can be divided into separate sections. Different panel sizes may also be combined when necessary to maximize the available installation area.
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The panel sections must be plumbed to maintain proper and balanced water flow throughout the entire solar array. Feed plumbing should supply the bottom headers, while return plumbing connects to the top headers, allowing water to flow evenly through each panel section.​
Important: All panel sections and connecting PVC plumbing must be installed to allow proper gravity drainage. The return lines from separate sections should join at the highest point of the system before the combined return line runs back to the pool equipment.