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Old 11-29-2015, 09:29 PM   #1
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White Rodgers 3 wire zone valve wiring question


I recently hooked up an indirect water heater. I previously had (2) 3 wire, white Rodgers zone valves hooked up with no zone controller. I have (2) 2 wire thermostats.

Here is the wiring diagram for the wr zone valves

http://s3.supplyhouse.com/product_fi...structions.pdf

With the indirect, I got another wr valve and taco 3 zone controller so I could prioritize the hot water call.

http://s3.supplyhouse.com/product_fi...trolWiring.pdf

The problem is the taco zone controller only shows which terminals to connect to on taco valves
http://s3.supplyhouse.com/product_fi...5-brochure.pdf

So hooking up the t-stats are pretty straight forward, but in a little confused about how to hook up the valves to the controller

Any tips appreciated, thanks
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Old 11-30-2015, 04:33 AM   #2
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I don't know how you/they got 2 wire thermostats to work with 3 wire zone valves. Those valves are power open power closed. With a 2 wire thermostat, they should have always been open.
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Old 11-30-2015, 06:10 AM   #3
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Quote:
Originally Posted by beenthere View Post
I don't know how you/they got 2 wire thermostats to work with 3 wire zone valves. Those valves are power open power closed. With a 2 wire thermostat, they should have always been open.
Forgot to mention, there's a 24vdc transformer that was used for power. But the zone controller has its own transformer so I was going to just abandon it
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Old 11-30-2015, 04:13 PM   #4
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Are you sure the zone valves were actually closing.

Post a pic of the wiring on one or both of the zone valves.
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Old 12-01-2015, 11:42 AM   #5
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Quote:
Originally Posted by beenthere View Post
Are you sure the zone valves were actually closing.

Post a pic of the wiring on one or both of the zone valves.
I ripped out all of the wiring when I went to wire the controller in. Fortunately, I called Taco tech support and they have a cheat sheet for wiring non-taco valves. Will update for the archive if it works

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