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Discuss Three port wiring question in the Central Heating Forum area at PlumbersForums.net

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Hi guys.
Hoping for a quick Three port answer.
When wired to programmer tined switch?,is this the common wire to cylinder stat??.
As what I'm trying to retrieve is when the water is used and goes below set temperatures to fire up boiler.
Just trying to get heads up about the wiring again.
This valve isn't a mid position it stays one way or other
Prioiritse hot water
 

ShaunCorbs

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:)

A6A8C426-F566-4693-B9B9-E81BB50FF7A0.png
 

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