Sarcotherm Installation and Service Manual

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Special thanks to George Peteya, P.E., of Slant/Fin for sharing this circa-1955 Sarcotherm Installation and Service Manual for Modulating Outdoor-Indoor Controls (Sarcotherm Type STA-1 and Type STA-1D). As George wrote, "It's probably the last surviving copy of the first outdoor-air reset controller."

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