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Combined Potable Water and Hydronic Heating Systems <br /> Wirsbo AQUAPEX is used in combined potable water and hydronic heating <br /> systems only where allowed by code. Depending on the heating control <br /> strategy employed, these systems typically do not exceed 140°F. Should <br /> the system water temperature exceed 140°F, the installing contractor is <br /> responsible for providing anti-scald devices to protect the inhabitants. In <br /> addition, the installer must ensure, and is responsible for, providing weekly <br /> off-season (summer) circulation through the heating portion of the system <br /> to prevent water stagnation. <br /> Refer to your local plumbing and heating code official as to whether these <br /> combined systems are allowed in your area. If allowed within your area, <br /> ensure a proper heat loss and design is completed that considers the loss <br /> of heat energy between the two systems and the resulting impact on <br /> either system's performance. <br /> Hydronic Heating Systems <br /> Wirsbo AQUAPEX can be used in closed-loop hydronic heating systems <br /> operating at sustained temperatures up to 180°F, provided any issues <br /> concerning oxygen diffusion are properly addressed. Corrodible or ferrous <br /> components may not be used in a system designed with Wirsbo AQUAPEX <br /> unless these components are isolated from the tubing. <br /> Please see the Uponor Complete Design Assistance Manual (CDAM) for <br /> information about using Wirsbo AQUAPEX in hydronic radiant heating <br /> systems. Refer to the Uponor Snow and Ice Melting Design Manual for <br /> information about using Wirsbo AQUAPEX for snow-melting applications. <br /> Section 2 — Installation Options and Applications Uponor <br />