Taco Inc, 1160 Cranston St., Cranston, RI 02920 | 401-942-8000. TACO manuals, parts lists, wiring diagrams for HVAC equipment: Heat Pumps. Here we provide free downloadable copies of installation and service manuals TACO controls & equipment.
Detailed Taco circulator pump wiring diagram guide to help with proper installation and troubleshooting. Clear instructions for wiring and connections of Taco circulator pumps.. The wiring diagram for a 3-wire taco zone valve system includes a thermostat, a circulator pump, and multiple zone valves. Each zone valve is controlled by a separate thermostat and has three wires - a power wire, a common wire, and a control wire.