Master control zone valve thermostat wiring connection tips.
Thermostat taco zone valve wiring.
Zone valve controls connected to reset controls pc700 702 705 32 39 hydro air fan controls hafc 101 201 40 44 specialty thermostat and zone valve wiring 45 50.
The thermostat wires on the master primary control will show about 20 volts from the on board thermostat relay transformer inside the primary control.
Wire diagram for taco zone valves taco zone sentry zone valves provide on off normally open or normally closed control in both open and closed hydronic systems.
The taco multiple heating zone controller is a zvc403 and yes the green led is always on and the zone 1 issue is after both the yellow orange thermostat led and red zone valve led are illuminated.
It shows the parts of the circuit as simplified forms as well as the power and also signal links between the tools.
A wiring diagram is a simplified standard photographic representation of an electrical circuit.
No voltage should be presented by the zone valves thermostat or transformer circuit to the primary controller.