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Posted by HeatPro on September 18, 2006 at 11:20:31:
In Reply to: Wiring Honeywell V8043E with taco 007 and Honeywell RA832A Relay posted by Chris on September 17, 2006 at 22:26:02:
It's much easier for you with a Taco ZV relay box that makes the wiring obvious.
Each new zone valve is wired exactly as the previous one(s) as they do the same job.
The red wires are the end switch wires that go to T and T on the relay box. Every end switch goes to the T and T.
The yellow wires are the zone valve motor wires. One yellow from each zone valve goes to the transformer that powers the zone valve motor. The other wire from that transformer goes to the thermostat R for a zone. The other so-far-unused yellow wire of the zone valve motor goes to the thermostat W. So when the thermostat closes its contacts, the ZV motor runs, the ZV end switch closes, tripping the relay so the circulator runs.
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