Plumbing · P-XPPZD

Recirculation through Boost Water Heater

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The recirculation piping layout and equipment arrangement route through a boost water heater. Primary and secondary recirculation pumps, designated as CP-01 through CP-04, operate alongside a boost water heater and an aquastat wired to the secondary circulator. Balancing valves and drain valves are positioned along the lines, with a maximum spacing of four times the pipe diameter maintained between specific branches. Installation notes instruct on initial start-up procedures, requiring the water heater to be purged for at least five minutes while cycling the drain valve to remove trapped air.

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