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Discuss Boiler programmer upgrade wiring question / problem in the Plumbing Jobs | The Job-board area at PlumbersForums.net

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Hi, I am a newbie to this forum, and hope someone can help with my question.
I am updating my old Siemans programmer to a hive dual channel programmer. My heating/hot water system has a separate boiler and hot water tank.
When I removed the cover of my old programmer to install the new one, there was no wiring in switch positions 1&2. The wiring is as shown in the picture below.
My question is what wiring should go into 1 and 2 on the new programmer?


upload_2017-10-29_12-11-40.png
 
you might not have / need a wire in one or two depends on your system layout
 
If you have two 2port valves (motor open & spring return) then you don’t need 1&2 the Hive back plate would be a direct swap to your original one. *assuming your system has been working fine on your original programmer
 
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