Bcp-3 installation and operation manual, Wiring outputs, Important – Weil-McLain BCP-3 User Manual
Page 4: Outdoor sensor installation (t2, com), Wiring the domestic hot water call dhw (t3+, t3-), Wiring the enable/disable (tstat) (ext+, ext-), Wiring the setback/boost (p+, p-), Wire colors and output lights
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